1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ 27 /* All Rights Reserved */ 28 29 /* 30 * Portions of this source code were derived from Berkeley 4.3 BSD 31 * under license from the Regents of the University of California. 32 */ 33 34 #pragma ident "%Z%%M% %I% %E% SMI" 35 36 #include <stdio.h> 37 #include <sys/types.h> 38 #include <errno.h> 39 #include <unistd.h> 40 #include <stdlib.h> 41 #include <fcntl.h> 42 #include <memory.h> 43 #include <string.h> 44 #include <stdarg.h> 45 #include <sys/stat.h> 46 #include <sys/statvfs.h> 47 #include <sys/mkdev.h> 48 #include <sys/param.h> 49 #include <utime.h> 50 #include <pwd.h> 51 #include <grp.h> 52 #include <signal.h> 53 #include <ctype.h> 54 #include <archives.h> 55 #include <locale.h> 56 #include <sys/ioctl.h> 57 #include <sys/mtio.h> 58 #include <sys/fdio.h> 59 #include "cpio.h" 60 #include <sys/acl.h> 61 #include <sys/time.h> 62 #include <sys/resource.h> 63 #include <fnmatch.h> 64 #include <libgen.h> 65 #include <libintl.h> 66 #include <dirent.h> 67 #include <limits.h> 68 #include <aclutils.h> 69 #ifdef SOLARIS_PRIVS 70 #include <priv.h> 71 #endif /* SOLARIS_PRIVS */ 72 73 /* 74 * Special kludge for off_t being a signed quantity. 75 */ 76 #if _FILE_OFFSET_BITS == 64 77 typedef u_longlong_t u_off_t; 78 #else 79 typedef ulong_t u_off_t; 80 #endif 81 82 #define SECMODE 0xe080 83 84 #define DEVNULL "/dev/null" 85 #define XATTRHDR ".hdr" 86 87 #define NAMELEN 32 88 #define TYPELEN 16 89 #define PERMLEN 4 90 91 #define FILE_COPIED 1 92 #define FILE_LINKED 2 93 #define FILE_PASS_ERR -1 94 95 #define ARCHIVE_NORMAL 0 96 #define ARCHIVE_ACL 1 97 #define ARCHIVE_XATTR 2 98 99 #define LSTAT(dir, path, statbuf) fstatat(dir, \ 100 get_component((Gen.g_attrnam_p == (char *)NULL) ? \ 101 path : Gen.g_attrnam_p), statbuf, AT_SYMLINK_NOFOLLOW) 102 #define STAT(dir, path, statbuf) fstatat(dir, \ 103 get_component((Gen.g_attrnam_p == (char *)NULL) ? \ 104 path : Gen.g_attrnam_p), statbuf, 0) 105 106 /* 107 * These limits reflect the maximum size regular file that 108 * can be archived, depending on the archive type. For archives 109 * with character-format headers (odc, tar, ustar) we use 110 * CHAR_OFFSET_MAX. For archives with SVR4 ASCII headers (-c, -H crc) 111 * we store filesize in an 8-char hexadecimal string and use 112 * ASC_OFFSET_MAX. Otherwise, we are limited to the size that will 113 * fit in a signed long value. 114 */ 115 #define CHAR_OFFSET_MAX 077777777777ULL /* 11 octal digits */ 116 #define ASC_OFFSET_MAX 0XFFFFFFFF /* 8 hexadecimal digits */ 117 #define BIN_OFFSET_MAX LONG_MAX /* signed long max value */ 118 119 #define POSIXMODES 07777 120 121 static char aclchar = ' '; 122 123 static struct Lnk *add_lnk(struct Lnk **); 124 static int bfill(void); 125 static void bflush(void); 126 static int chgreel(int dir); 127 static int ckname(int); 128 static void ckopts(long mask); 129 static long cksum(char hdr, int byt_cnt, int *err); 130 static int creat_hdr(void); 131 static int creat_lnk(int dirfd, char *name1_p, char *name2_p); 132 static int creat_spec(int dirfd); 133 static int creat_tmp(char *nam_p); 134 static void data_in(int proc_mode); 135 static void data_out(void); 136 static void data_pass(void); 137 static void file_in(void); 138 static int file_out(void); 139 static int file_pass(void); 140 static void flush_lnks(void); 141 static int gethdr(void); 142 static int getname(void); 143 static void getpats(int largc, char **largv); 144 static void ioerror(int dir); 145 static int matched(void); 146 static int missdir(char *nam_p); 147 static long mklong(short v[]); 148 static void mkshort(short sval[], long v); 149 static void msg(int severity, const char *fmt, ...); 150 static int openout(int dirfd); 151 static int read_hdr(int hdr); 152 static void reclaim(struct Lnk *l_p); 153 static void rstbuf(void); 154 static void setpasswd(char *nam); 155 static void rstfiles(int over, int dirfd); 156 static void scan4trail(void); 157 static void setup(int largc, char **largv); 158 static void set_tym(int dirfd, char *nam_p, time_t atime, time_t mtime); 159 static void sigint(int sig); 160 static void swap(char *buf_p, int cnt); 161 static void usage(void); 162 static void verbose(char *nam_p); 163 static void write_hdr(int secflag, off_t len); 164 static void write_trail(void); 165 static int ustar_dir(void); 166 static int ustar_spec(void); 167 static struct stat *convert_to_old_stat(struct stat *, char *, char *); 168 static void read_bar_vol_hdr(void); 169 static void read_bar_file_hdr(void); 170 static void setup_uncompress(FILE **); 171 static void skip_bar_volhdr(void); 172 static void bar_file_in(void); 173 static int g_init(int *devtype, int *fdes); 174 static int g_read(int, int, char *, unsigned); 175 static int g_write(int, int, char *, unsigned); 176 static int is_floppy(int); 177 static int is_tape(int); 178 static void write_ancillary(char *secinfo, int len); 179 static int remove_dir(char *); 180 static int save_cwd(void); 181 static void rest_cwd(int cwd); 182 183 static void xattrs_out(int (*func)()); 184 static void get_parent(char *path, char *dir); 185 static void prepare_xattr_hdr(char **attrbuf, char *filename, 186 char *attrname, char typeflag, struct Lnk *linkinfo, int *rlen); 187 static char tartype(int type); 188 static int openfile(int omode); 189 static mode_t attrmode(char type); 190 static char *get_component(char *path); 191 static int open_dir(char *name); 192 static int open_dirfd(); 193 static void close_dirfd(); 194 static void write_xattr_hdr(); 195 static int retry_attrdir_open(char *name); 196 static char *skipslashes(char *string, char *start); 197 static int read_xattr_hdr(); 198 static void chop_endslashes(char *path); 199 200 201 /* helpful types */ 202 203 static 204 struct passwd *Curpw_p, /* Current password entry for -t option */ 205 *Rpw_p, /* Password entry for -R option */ 206 *dpasswd; 207 208 static 209 struct group *Curgr_p, /* Current group entry for -t option */ 210 *dgroup; 211 212 /* Data structure for buffered I/O. */ 213 214 static 215 struct buf_info { 216 char *b_base_p, /* Pointer to base of buffer */ 217 *b_out_p, /* Position to take bytes from buffer at */ 218 *b_in_p, /* Position to put bytes into buffer at */ 219 *b_end_p; /* Pointer to end of buffer */ 220 long b_cnt, /* Count of unprocessed bytes */ 221 b_size; /* Size of buffer in bytes */ 222 } Buffr; 223 224 /* Generic header format */ 225 226 static 227 struct gen_hdr { 228 ulong_t g_magic, /* Magic number field */ 229 g_ino, /* Inode number of file */ 230 g_mode, /* Mode of file */ 231 g_uid, /* Uid of file */ 232 g_gid, /* Gid of file */ 233 g_nlink, /* Number of links */ 234 g_mtime; /* Modification time */ 235 off_t g_filesz; /* Length of file */ 236 ulong_t g_dev, /* File system of file */ 237 g_rdev, /* Major/minor numbers of special files */ 238 g_namesz, /* Length of filename */ 239 g_cksum; /* Checksum of file */ 240 char g_gname[32], 241 g_uname[32], 242 g_version[2], 243 g_tmagic[6], 244 g_typeflag; 245 char *g_tname, 246 *g_prefix, 247 *g_nam_p, /* Filename */ 248 *g_attrnam_p, /* attribute */ 249 *g_attrfnam_p, /* Real file name attr belongs to */ 250 *g_linktoattrfnam_p, /* file linked attribute belongs to */ 251 *g_linktoattrnam_p, /* attribute g_attrnam_p is linked to */ 252 *g_dirpath; /* dirname currently opened */ 253 int g_dirfd; /* directory file descriptor */ 254 int g_passdirfd; /* directory fd to pass to */ 255 256 } Gen, *G_p; 257 258 /* Data structure for handling multiply-linked files */ 259 static 260 char prebuf[PRESIZ+1], 261 nambuf[NAMSIZ+1], 262 fullnam[MAXNAM+1]; 263 264 265 static 266 struct Lnk { 267 short L_cnt, /* Number of links encountered */ 268 L_data; /* Data has been encountered if 1 */ 269 struct gen_hdr L_gen; /* gen_hdr information for this file */ 270 struct Lnk *L_nxt_p, /* Next file in list */ 271 *L_bck_p, /* Previous file in list */ 272 *L_lnk_p; /* Next link for this file */ 273 } Lnk_hd; 274 275 static 276 struct hdr_cpio Hdr; 277 278 /* 279 * ------------------------------------------------------------------------- 280 * Stuff needed to pre-view the name stream 281 * 282 * issymlink is used to remember that the current file is a symlink between 283 * getname() and file_pass(); the former trashes this information immediately 284 * when -L is specified. 285 */ 286 287 static 288 int issymlink = 0; 289 290 static 291 FILE *In_p = stdin; /* Where the input comes from */ 292 293 typedef struct sl_info 294 { 295 struct sl_info *llink; /* Left subtree ptr (tree depth in *sl_head) */ 296 struct sl_info *rlink; /* Right subtree ptr */ 297 int bal; /* Subtree balance factor */ 298 ulong_t sl_count; /* Number of symlinks */ 299 ino_t sl_ino; /* Inode of file */ 300 ino_t sl_ino2; /* alternate inode for -Hodc */ 301 } sl_info_t; 302 303 /* 304 * The following structure maintains a hash entry for the 305 * balancing trees which are allocated for each device nodes. 306 */ 307 typedef struct sl_info_link 308 { 309 dev_t dev; 310 sl_info_t *head; 311 struct sl_info_link *next; 312 } sl_info_link_t; 313 314 #define SL_INFO_ALLOC_CHUNK 1024 315 #define NDEVHENTRY 0x40 316 #define DEV_HASHKEY(x) ((x) & (NDEVHENTRY -1)) 317 318 /* 319 * For remapping dev,inode for -Hodc archives. 320 */ 321 322 typedef struct sl_remap 323 { 324 dev_t dev; /* device */ 325 int inode_count; /* # inodes seen on dev */ 326 struct sl_remap *next; /* next in the chain */ 327 } sl_remap_t; 328 329 /* forward declarations */ 330 331 static sl_info_t *sl_info_alloc(void); 332 static sl_info_t *sl_insert(dev_t, ino_t); 333 static ulong_t sl_numlinks(dev_t, ino_t); 334 static void sl_preview_synonyms(void); 335 static void sl_remember_tgt(const struct stat *, int); 336 static sl_info_t *sl_search(dev_t, ino_t); 337 static sl_info_t *sl_devhash_lookup(dev_t); 338 static void sl_devhash_insert(dev_t, sl_info_t *); 339 340 extern int sl_compare(ino_t, ino_t); 341 #define sl_compare(lino, rino) (lino < rino ? -1 : (lino > rino ? 1 : 0)) 342 343 /* global storage */ 344 345 static sl_remap_t *sl_remap_head = NULL; /* head of the inode-remap list */ 346 static sl_info_link_t *sl_devhash[NDEVHENTRY]; /* hash table */ 347 348 /* 349 * ------------------------------------------------------------------------- 350 */ 351 352 static 353 struct stat ArchSt, /* stat(2) information of the archive */ 354 SrcSt, /* stat(2) information of source file */ 355 DesSt, /* stat(2) of destination file */ 356 *OldSt = NULL; /* stat info converted to svr32 format */ 357 358 /* 359 * bin_mag: Used to validate a binary magic number, 360 * by combining to bytes into an unsigned short. 361 */ 362 363 static 364 union bin_mag { 365 unsigned char b_byte[2]; 366 ushort_t b_half; 367 } Binmag; 368 369 static 370 union tblock *Thdr_p; /* TAR header pointer */ 371 372 static union b_block *bar_Vhdr; 373 static struct gen_hdr Gen_bar_vol; 374 375 /* 376 * swpbuf: Used in swap() to swap bytes within a halfword, 377 * halfwords within a word, or to reverse the order of the 378 * bytes within a word. Also used in mklong() and mkshort(). 379 */ 380 381 static 382 union swpbuf { 383 unsigned char s_byte[4]; 384 ushort_t s_half[2]; 385 ulong_t s_word; 386 } *Swp_p; 387 388 static 389 char Adir, /* Flags object as a directory */ 390 Hiddendir, /* Processing hidden attribute directory */ 391 Aspec, /* Flags object as a special file */ 392 Do_rename, /* Indicates rename() is to be used */ 393 Time[50], /* Array to hold date and time */ 394 Ttyname[] = "/dev/tty", /* Controlling console */ 395 T_lname[MAXPATHLEN], /* Array to hold links name for tar */ 396 *Buf_p, /* Buffer for file system I/O */ 397 *Empty, /* Empty block for TARTYP headers */ 398 *Full_p, /* Pointer to full pathname */ 399 *Efil_p, /* -E pattern file string */ 400 *Eom_p = "Change to part %d and press RETURN key. [q] ", 401 *Fullnam_p, /* Full pathname */ 402 *Attrfile_p, /* attribute file */ 403 *Hdr_p, /* -H header type string */ 404 *IOfil_p, /* -I/-O input/output archive string */ 405 *Lnkend_p, /* Pointer to end of Lnknam_p */ 406 *Lnknam_p, /* Buffer for linking files with -p option */ 407 *Nam_p, /* Array to hold filename */ 408 *Savenam_p, /* copy of filename xattr belongs to */ 409 *Own_p, /* New owner login id string */ 410 *Renam_p, /* Buffer for renaming files */ 411 *Renametmp_p, /* Tmp Buffer for renaming files */ 412 *Symlnk_p, /* Buffer for holding symbolic link name */ 413 *Over_p, /* Holds temporary filename when overwriting */ 414 **Pat_pp = 0, /* Pattern strings */ 415 bar_linkflag, /* flag to indicate if the file is a link */ 416 bar_linkname[MAXPATHLEN]; /* store the name of the link */ 417 418 static 419 int Append = 0, /* Flag set while searching to end of archive */ 420 Archive, /* File descriptor of the archive */ 421 Buf_error = 0, /* I/O error occured during buffer fill */ 422 Def_mode = 0777, /* Default file/directory protection modes */ 423 Device, /* Device type being accessed (used with libgenIO) */ 424 Error_cnt = 0, /* Cumulative count of I/O errors */ 425 Finished = 1, /* Indicates that a file transfer has completed */ 426 Hdrsz = ASCSZ, /* Fixed length portion of the header */ 427 Hdr_type, /* Flag to indicate type of header selected */ 428 Ifile, /* File des. of file being archived */ 429 Ofile, /* File des. of file being extracted from archive */ 430 Use_old_stat = 0, /* Create an old style -Hodc hdr (small dev's) */ 431 Onecopy = 0, /* Flags old vs. new link handling */ 432 Pad_val = 0, /* Indicates the number of bytes to pad (if any) */ 433 PageSize = 0, /* The native page size, used for figuring block size */ 434 Volcnt = 1, /* Number of archive volumes processed */ 435 Verbcnt = 0, /* Count of number of dots '.' output */ 436 Eomflag = 0, 437 Dflag = 0, 438 Atflag = 0, /* Archive/restore extended attributes */ 439 Compressed, /* Flag to indicate if the bar archive is compressed */ 440 Bar_vol_num = 0, /* Volume number count for bar archive */ 441 privileged = 0; /* Flag set if running with higher privileges */ 442 443 444 static 445 gid_t Lastgid = (gid_t)-1; /* Used with -t & -v to record current gid */ 446 447 static 448 uid_t Lastuid = (uid_t)-1; /* Used with -t & -v to record current uid */ 449 450 static 451 long Args, /* Mask of selected options */ 452 Max_namesz = CPATH; /* Maximum size of pathnames/filenames */ 453 454 static 455 int Bufsize = BUFSZ; /* Default block size */ 456 457 458 static u_longlong_t Blocks; /* full blocks transferred */ 459 static u_longlong_t SBlocks; /* cumulative char count from short reads */ 460 461 462 static off_t Max_offset = BIN_OFFSET_MAX; /* largest file size */ 463 static off_t Max_filesz; /* from getrlimit */ 464 465 static 466 FILE *Ef_p, /* File pointer of pattern input file */ 467 *Err_p = stderr, /* File pointer for error reporting */ 468 *Out_p = stdout, /* File pointer for non-archive output */ 469 *Rtty_p, /* Input file pointer for interactive rename */ 470 *Wtty_p; /* Output file ptr for interactive rename */ 471 472 static 473 ushort_t Ftype = S_IFMT; /* File type mask */ 474 475 /* ACL support */ 476 static struct sec_attr { 477 char attr_type; 478 char attr_len[7]; 479 char attr_info[1]; 480 } *attr; 481 482 static int Pflag = 0; /* flag indicates that acl is preserved */ 483 static int acl_is_set = 0; /* True if an acl was set on the file */ 484 485 acl_t *aclp; 486 487 /* 488 * 489 * cpio has been changed to support extended attributes. 490 * 491 * As part of this change cpio has been changed to use the new *at() syscalls 492 * such as openat, fchownat(), unlinkat()... 493 * 494 * This was done so that attributes can be handled with as few code changes 495 * as possible. 496 * 497 * What this means is that cpio now opens the directory that a file or directory 498 * resides in and then performs *at() functions to manipulate the entry. 499 * 500 * For example a new file is now created like this: 501 * 502 * dfd = open(<some dir path>) 503 * fd = openat(dfd, <name>,....); 504 * 505 * or in the case of an extended attribute 506 * 507 * dfd = attropen(<pathname>, ".", ....) 508 * 509 * Once we have a directory file descriptor all of the *at() functions can 510 * be applied to it. 511 * 512 * unlinkat(dfd, <component name>,...) 513 * fchownat(dfd, <component name>,..) 514 * 515 * This works for both normal namespace files and extended attribute file 516 * 517 */ 518 519 /* 520 * Extended attribute layout 521 * 522 * Extended attributes are stored in two pieces. 523 * 1. An attribute header which has information about 524 * what file the attribute is for and what the attribute 525 * is named. 526 * 2. The attribute record itself. Stored as a normal file type 527 * of entry. 528 * Both the header and attribute record have special modes/typeflags 529 * associated with them. 530 * 531 * The names of the header in the archive look like: 532 * /dev/null/attr.hdr 533 * 534 * The name of the attribute looks like: 535 * /dev/null/attr. 536 * 537 * This is done so that an archiver that doesn't understand these formats 538 * can just dispose of the attribute records unless the user chooses to 539 * rename them via cpio -r or pax -i 540 * 541 * The format is composed of a fixed size header followed 542 * by a variable sized xattr_buf. If the attribute is a hard link 543 * to another attribute, then another xattr_buf section is included 544 * for the link. 545 * 546 * The xattr_buf is used to define the necessary "pathing" steps 547 * to get to the extended attribute. This is necessary to support 548 * a fully recursive attribute model where an attribute may itself 549 * have an attribute. 550 * 551 * The basic layout looks like this. 552 * 553 * -------------------------------- 554 * | | 555 * | xattr_hdr | 556 * | | 557 * -------------------------------- 558 * -------------------------------- 559 * | | 560 * | xattr_buf | 561 * | | 562 * -------------------------------- 563 * -------------------------------- 564 * | | 565 * | (optional link info) | 566 * | | 567 * -------------------------------- 568 * -------------------------------- 569 * | | 570 * | attribute itself | 571 * | stored as normal tar | 572 * | or cpio data with | 573 * | special mode or | 574 * | typeflag | 575 * | | 576 * -------------------------------- 577 * 578 */ 579 580 /* 581 * Extended attributes structures 582 * 583 * xattrhead is the complete extended attribute header, as read of off 584 * disk/tape. It includes the variable xattr_buf portion. 585 * 586 * xattrp is basically an offset into xattrhead that points to the 587 * "pathing" section which defines how to get to the attribute. 588 * 589 * xattr_linkp is identical to xattrp except that it is used for linked 590 * attributes. It provides the pathing steps to get to the linked 591 * attribute. 592 * 593 * These structures are updated when an extended attribute header is read off 594 * of disk/tape. 595 */ 596 static struct xattr_hdr *xattrhead; 597 static struct xattr_buf *xattrp; 598 static struct xattr_buf *xattr_linkp; 599 static int xattrbadhead; /* is extended attribute header bad? */ 600 601 static int append_secattr(char **, int *, acl_t *); 602 static void write_ancillary(char *, int); 603 604 /* 605 * Note regarding cpio and changes to ensure cpio doesn't try to second 606 * guess whether it runs with sufficient privileges or not: 607 * 608 * cpio has been changed so that it doesn't carry a second implementation of 609 * the kernel's policy with respect to privileges. Instead of attempting 610 * to restore uid and gid from an archive only if cpio is run as uid 0, 611 * cpio now *always* tries to restore the uid and gid from the archive 612 * except when the -R option is specified. When the -R is specified, 613 * the uid and gid of the restored file will be changed to those of the 614 * login id specified. In addition, chown(), set_tym(), and chmod() should 615 * only be executed once during archive extraction, and to ensure 616 * setuid/setgid bits are restored properly, chown() should always be 617 * executed before chmod(). 618 * 619 * Note regarding debugging mechanism for cpio: 620 * 621 * The following mechanism is provided to allow us to debug cpio in complicated 622 * situations, like when it is part of a pipe. The idea is that you compile 623 * with -DWAITAROUND defined, and then add the "-z" command line option to the 624 * target cpio invocation. If stderr is available, it will tell you to which 625 * pid to attach the debugger; otherwise, use ps to find it. Attach to the 626 * process from the debugger, and, *PRESTO*, you are there! 627 * 628 * Simply assign "waitaround = 0" once you attach to the process, and then 629 * proceed from there as usual. 630 */ 631 632 #ifdef WAITAROUND 633 int waitaround = 0; /* wait for rendezvous with the debugger */ 634 #endif 635 636 /* 637 * Allocation wrappers and their flags 638 */ 639 #define E_NORMAL 0x0 /* Return NULL if allocation fails */ 640 #define E_EXIT 0x1 /* Exit if allocation fails */ 641 642 static void *e_realloc(int flag, void *old, size_t newsize); 643 static char *e_strdup(int flag, const char *arg); 644 static void *e_valloc(int flag, size_t size); 645 static void *e_zalloc(int flag, size_t size); 646 647 #define EXIT_CODE (Error_cnt > 255 ? 255 : Error_cnt) 648 649 /* 650 * main: Call setup() to process options and perform initializations, 651 * and then select either copy in (-i), copy out (-o), or pass (-p) action. 652 */ 653 654 int 655 main(int argc, char **argv) 656 { 657 int i; 658 int passret; 659 660 (void) setlocale(LC_ALL, ""); 661 #if !defined(TEXT_DOMAIN) /* Should be defined by cc -D */ 662 #define TEXT_DOMAIN "SYS_TEST" /* Use this only if it weren't */ 663 #endif 664 (void) textdomain(TEXT_DOMAIN); 665 666 (void) memset(&Gen, 0, sizeof (Gen)); 667 setup(argc, argv); 668 669 if (signal(SIGINT, sigint) == SIG_IGN) 670 (void) signal(SIGINT, SIG_IGN); 671 switch (Args & (OCi | OCo | OCp)) { 672 case OCi: /* COPY IN */ 673 Hdr_type = NONE; 674 while ((i = gethdr()) != 0) { 675 Gen.g_dirfd = -1; 676 if (i == 1) { 677 file_in(); 678 /* 679 * Any ACL info for this file would or should 680 * have been used after file_in(); clear out 681 * aclp so it is is not erroneously used on 682 * the next file. 683 */ 684 if (aclp != NULL) { 685 acl_free(aclp); 686 aclp = NULL; 687 } 688 acl_is_set = 0; 689 } 690 (void) memset(&Gen, 0, sizeof (Gen)); 691 } 692 /* Do not count "extra" "read-ahead" buffered data */ 693 if (Buffr.b_cnt > Bufsize) 694 Blocks -= (u_longlong_t)(Buffr.b_cnt / Bufsize); 695 break; 696 case OCo: /* COPY OUT */ 697 if (Args & OCA) { 698 scan4trail(); 699 } 700 701 Gen.g_dirfd = -1; 702 Gen.g_dirpath = NULL; 703 sl_preview_synonyms(); 704 705 while ((i = getname()) != 0) { 706 if (i == 1) { 707 (void) file_out(); 708 if (Atflag) { 709 if (Gen.g_dirfd != -1) { 710 (void) close(Gen.g_dirfd); 711 } 712 Gen.g_dirfd = -1; 713 xattrs_out(file_out); 714 } 715 Hiddendir = 0; 716 } 717 if (aclp != NULL) { 718 acl_free(aclp); 719 aclp = NULL; 720 acl_is_set = 0; 721 } 722 } 723 write_trail(); 724 break; 725 case OCp: /* PASS */ 726 sl_preview_synonyms(); 727 728 Gen.g_dirfd = -1; 729 Gen.g_passdirfd = -1; 730 Gen.g_dirpath = NULL; 731 while (getname()) { 732 /* 733 * If file is a fully qualified path then 734 * file_pass will strip off the leading '/' 735 * and we need to save off the unstripped 736 * name for attribute traversal. 737 */ 738 if (Atflag) { 739 (void) strcpy(Savenam_p, Gen.g_nam_p); 740 } 741 passret = file_pass(); 742 if (aclp != NULL) { 743 acl_free(aclp); 744 aclp = NULL; 745 acl_is_set = 0; 746 } 747 if (Gen.g_passdirfd != -1) 748 (void) close(Gen.g_passdirfd); 749 Gen.g_passdirfd = -1; 750 if (Atflag) { 751 if (Gen.g_dirfd != -1) { 752 (void) close(Gen.g_dirfd); 753 } 754 Gen.g_dirfd = -1; 755 if (passret != FILE_LINKED) { 756 Gen.g_nam_p = Savenam_p; 757 xattrs_out(file_pass); 758 } 759 } 760 } 761 break; 762 default: 763 msg(EXT, "Impossible action."); 764 } 765 if (Ofile > 0) { 766 if (close(Ofile) != 0) 767 msg(EXTN, "close error"); 768 } 769 if (Archive > 0) { 770 if (close(Archive) != 0) 771 msg(EXTN, "close error"); 772 } 773 Blocks = (u_longlong_t)(Blocks * Bufsize + SBlocks + 0x1FF) >> 9; 774 msg(EPOST, "%lld blocks", Blocks); 775 if (Error_cnt) 776 msg(EPOST, "%d error(s)", Error_cnt); 777 return (EXIT_CODE); 778 } 779 780 /* 781 * add_lnk: Add a linked file's header to the linked file data structure, by 782 * either adding it to the end of an existing sub-list or starting 783 * a new sub-list. Each sub-list saves the links to a given file. 784 * 785 * Directly returns a pointer to the new entry; returns a pointer to the head 786 * of the sub-list in which that entry is located through the argument. 787 */ 788 789 static struct Lnk * 790 add_lnk(struct Lnk **sublist_return) 791 { 792 struct Lnk *new_entry, *sublist; 793 794 for (sublist = Lnk_hd.L_nxt_p; 795 sublist != &Lnk_hd; 796 sublist = sublist->L_nxt_p) { 797 if (sublist->L_gen.g_ino == G_p->g_ino && 798 sublist->L_gen.g_dev == G_p->g_dev) { 799 /* found */ 800 break; 801 } 802 } 803 804 new_entry = e_zalloc(E_EXIT, sizeof (struct Lnk)); 805 806 new_entry->L_lnk_p = NULL; 807 new_entry->L_gen = *G_p; /* structure copy */ 808 809 new_entry->L_gen.g_nam_p = e_zalloc(E_EXIT, (size_t)G_p->g_namesz); 810 811 (void) strcpy(new_entry->L_gen.g_nam_p, G_p->g_nam_p); 812 813 if (sublist == &Lnk_hd) { 814 /* start new sub-list */ 815 new_entry->L_nxt_p = &Lnk_hd; 816 new_entry->L_bck_p = Lnk_hd.L_bck_p; 817 Lnk_hd.L_bck_p = new_entry->L_bck_p->L_nxt_p = new_entry; 818 new_entry->L_lnk_p = NULL; 819 new_entry->L_cnt = 1; 820 new_entry->L_data = Onecopy ? 0 : 1; 821 sublist = new_entry; 822 } else { 823 /* add to existing sub-list */ 824 struct Lnk *ptr; 825 826 sublist->L_cnt++; 827 828 for (ptr = sublist; 829 ptr->L_lnk_p != NULL; 830 ptr = ptr->L_lnk_p) { 831 ptr->L_gen.g_filesz = G_p->g_filesz; 832 } 833 834 ptr->L_gen.g_filesz = G_p->g_filesz; 835 ptr->L_lnk_p = new_entry; 836 } 837 838 *sublist_return = sublist; 839 return (new_entry); 840 } 841 842 /* 843 * bfill: Read req_cnt bytes (out of filelen bytes) from the I/O buffer, 844 * moving them to rd_buf_p. When there are no bytes left in the I/O buffer, 845 * Fillbuf is set and the I/O buffer is filled. The variable dist is the 846 * distance to lseek if an I/O error is encountered with the -k option set 847 * (converted to a multiple of Bufsize). 848 */ 849 850 static int 851 bfill(void) 852 { 853 int i = 0, rv; 854 static int eof = 0; 855 856 if (!Dflag) { 857 while ((Buffr.b_end_p - Buffr.b_in_p) >= Bufsize) { 858 errno = 0; 859 if ((rv = g_read(Device, Archive, Buffr.b_in_p, Bufsize)) < 0) { 860 if (((Buffr.b_end_p - Buffr.b_in_p) >= Bufsize) && 861 (Eomflag == 0)) { 862 Eomflag = 1; 863 return (1); 864 } 865 if (errno == ENOSPC) { 866 (void) chgreel(INPUT); 867 if (Hdr_type == BAR) { 868 skip_bar_volhdr(); 869 } 870 continue; 871 } else if (Args & OCk) { 872 if (i++ > MX_SEEKS) 873 msg(EXT, "Cannot recover."); 874 if (lseek(Archive, Bufsize, SEEK_REL) < 0) 875 msg(EXTN, "Cannot lseek()"); 876 Error_cnt++; 877 Buf_error++; 878 rv = 0; 879 continue; 880 } else 881 ioerror(INPUT); 882 } /* (rv = g_read(Device, Archive ... */ 883 if (Hdr_type != BAR || rv == Bufsize) { 884 Buffr.b_in_p += rv; 885 Buffr.b_cnt += (long)rv; 886 } 887 if (rv == Bufsize) { 888 eof = 0; 889 Blocks++; 890 } else if (rv == 0) { 891 if (!eof) { 892 eof = 1; 893 break; 894 } 895 (void) chgreel(INPUT); 896 eof = 0; /* reset the eof after chgreel */ 897 898 /* 899 * if spans multiple volume, skip the volume header of 900 * the next volume so that the file currently being 901 * extracted can continue to be extracted. 902 */ 903 if (Hdr_type == BAR) { 904 skip_bar_volhdr(); 905 } 906 907 continue; 908 } else { 909 eof = 0; 910 SBlocks += (u_longlong_t)rv; 911 } 912 } /* (Buffr.b_end_p - Buffr.b_in_p) <= Bufsize */ 913 914 } else { /* Dflag */ 915 errno = 0; 916 if ((rv = g_read(Device, Archive, Buffr.b_in_p, Bufsize)) < 0) { 917 return (-1); 918 } /* (rv = g_read(Device, Archive ... */ 919 Buffr.b_in_p += rv; 920 Buffr.b_cnt += (long)rv; 921 if (rv == Bufsize) { 922 eof = 0; 923 Blocks++; 924 } else if (!rv) { 925 if (!eof) { 926 eof = 1; 927 return (rv); 928 } 929 return (-1); 930 } else { 931 eof = 0; 932 SBlocks += (u_longlong_t)rv; 933 } 934 } 935 return (rv); 936 } 937 938 /* 939 * bflush: Move wr_cnt bytes from data_p into the I/O buffer. When the 940 * I/O buffer is full, Flushbuf is set and the buffer is written out. 941 */ 942 943 static void 944 bflush(void) 945 { 946 int rv; 947 948 while (Buffr.b_cnt >= Bufsize) { 949 errno = 0; 950 if ((rv = g_write(Device, Archive, Buffr.b_out_p, 951 Bufsize)) < 0) { 952 if (errno == ENOSPC && !Dflag) 953 rv = chgreel(OUTPUT); 954 else 955 ioerror(OUTPUT); 956 } 957 Buffr.b_out_p += rv; 958 Buffr.b_cnt -= (long)rv; 959 if (rv == Bufsize) 960 Blocks++; 961 else if (rv > 0) 962 SBlocks += (u_longlong_t)rv; 963 } 964 rstbuf(); 965 } 966 967 /* 968 * chgreel: Determine if end-of-medium has been reached. If it has, 969 * close the current medium and prompt the user for the next medium. 970 */ 971 972 static int 973 chgreel(int dir) 974 { 975 int lastchar, tryagain, askagain, rv; 976 int tmpdev; 977 char str[APATH]; 978 struct stat statb; 979 980 rv = 0; 981 if (fstat(Archive, &statb) < 0) 982 msg(EXTN, "Error during stat() of archive"); 983 if ((statb.st_mode & S_IFMT) != S_IFCHR) { 984 if (dir == INPUT) { 985 msg(EXT, "%s%s\n", 986 "Can't read input: end of file encountered ", 987 "prior to expected end of archive."); 988 } 989 } 990 msg(EPOST, "\007End of medium on \"%s\".", dir ? "output" : "input"); 991 if (is_floppy(Archive)) 992 (void) ioctl(Archive, FDEJECT, NULL); 993 if ((close(Archive) != 0) && (dir == OUTPUT)) 994 msg(EXTN, "close error"); 995 Archive = 0; 996 Volcnt++; 997 for (;;) { 998 if (Rtty_p == (FILE *)NULL) 999 Rtty_p = fopen(Ttyname, "r"); 1000 do { /* tryagain */ 1001 if (IOfil_p) { 1002 do { 1003 msg(EPOST, gettext(Eom_p), Volcnt); 1004 if (!Rtty_p || fgets(str, sizeof (str), 1005 Rtty_p) == (char *)NULL) 1006 msg(EXT, "Cannot read tty."); 1007 askagain = 0; 1008 switch (*str) { 1009 case '\n': 1010 (void) strcpy(str, IOfil_p); 1011 break; 1012 case 'q': 1013 exit(EXIT_CODE); 1014 default: 1015 askagain = 1; 1016 } 1017 } while (askagain); 1018 } else { 1019 1020 if (Hdr_type == BAR) 1021 Bar_vol_num++; 1022 1023 msg(EPOST, 1024 "To continue, type device/file name when " 1025 "ready."); 1026 if (!Rtty_p || fgets(str, sizeof (str), 1027 Rtty_p) == (char *)NULL) 1028 msg(EXT, "Cannot read tty."); 1029 lastchar = strlen(str) - 1; 1030 if (*(str + lastchar) == '\n') /* remove '\n' */ 1031 *(str + lastchar) = '\0'; 1032 if (!*str) 1033 exit(EXIT_CODE); 1034 } 1035 tryagain = 0; 1036 if ((Archive = open(str, dir)) < 0) { 1037 msg(ERRN, "Cannot open \"%s\"", str); 1038 tryagain = 1; 1039 } 1040 } while (tryagain); 1041 (void) g_init(&tmpdev, &Archive); 1042 if (tmpdev != Device) 1043 msg(EXT, "Cannot change media types in mid-stream."); 1044 if (dir == INPUT) 1045 break; 1046 else { /* dir == OUTPUT */ 1047 errno = 0; 1048 if ((rv = g_write(Device, Archive, Buffr.b_out_p, 1049 Bufsize)) == Bufsize) 1050 break; 1051 else 1052 msg(ERR, 1053 "Unable to write this medium, try " 1054 "another."); 1055 } 1056 } /* ;; */ 1057 Eomflag = 0; 1058 return (rv); 1059 } 1060 1061 /* 1062 * ckname: Check filenames against user specified patterns, 1063 * and/or ask the user for new name when -r is used. 1064 */ 1065 1066 static int 1067 ckname(int flag) 1068 { 1069 int lastchar, len; 1070 1071 if (Hdr_type != TAR && Hdr_type != USTAR && Hdr_type != BAR) { 1072 /* Re-visit tar size issues later */ 1073 if (G_p->g_namesz - 1 > Max_namesz) { 1074 msg(ERR, "Name exceeds maximum length - skipped."); 1075 return (F_SKIP); 1076 } 1077 } 1078 1079 if (Pat_pp && !matched()) 1080 return (F_SKIP); 1081 if ((Args & OCr) && !Adir) { /* rename interactively */ 1082 (void) fprintf(Wtty_p, gettext("Rename \"%s%s%s\"? "), 1083 (G_p->g_attrnam_p == (char *)NULL) ? 1084 G_p->g_nam_p : Renam_p, 1085 (G_p->g_attrnam_p == (char *)NULL) ? 1086 "" : gettext(" Attribute "), 1087 (G_p->g_attrnam_p == (char *)NULL) ? 1088 "" : G_p->g_attrnam_p); 1089 (void) fflush(Wtty_p); 1090 if (fgets(Renametmp_p, Max_namesz + 1, Rtty_p) == (char *)NULL) 1091 msg(EXT, "Cannot read tty."); 1092 if (feof(Rtty_p)) 1093 exit(EXIT_CODE); 1094 lastchar = strlen(Renametmp_p) - 1; 1095 1096 /* remove trailing '\n' */ 1097 if (*(Renametmp_p + lastchar) == '\n') 1098 *(Renametmp_p + lastchar) = '\0'; 1099 if (*Renametmp_p == '\0') { 1100 msg(POST, "%s%s%s Skipped.", 1101 (G_p->g_attrnam_p == (char *)NULL) ? 1102 G_p->g_nam_p : G_p->g_attrfnam_p, 1103 (G_p->g_attrnam_p == (char *)NULL) ? 1104 "" : gettext(" Attribute "), 1105 (G_p->g_attrnam_p == (char *)NULL) ? 1106 "" : G_p->g_attrnam_p); 1107 *G_p->g_nam_p = '\0'; 1108 return (F_SKIP); 1109 } else if (strcmp(Renametmp_p, ".") != 0) { 1110 len = strlen(Renametmp_p); 1111 if (len > (int)strlen(G_p->g_nam_p)) { 1112 if ((G_p->g_nam_p != &nambuf[0]) && 1113 (G_p->g_nam_p != &fullnam[0])) 1114 free(G_p->g_nam_p); 1115 G_p->g_nam_p = e_zalloc(E_EXIT, len + 1); 1116 } 1117 if (G_p->g_attrnam_p != (char *)NULL) { 1118 free(G_p->g_attrnam_p); 1119 G_p->g_attrnam_p = e_strdup(E_EXIT, 1120 Renametmp_p); 1121 (void) strcpy(G_p->g_nam_p, Renam_p); 1122 } else { 1123 (void) strcpy(Renam_p, Renametmp_p); 1124 (void) strcpy(G_p->g_nam_p, Renametmp_p); 1125 } 1126 1127 } 1128 } 1129 if (flag != 0 || Onecopy == 0) { 1130 VERBOSE((Args & OCt), G_p->g_nam_p); 1131 } 1132 if (Args & OCt) 1133 return (F_SKIP); 1134 return (F_EXTR); 1135 } 1136 1137 /* 1138 * ckopts: Check the validity of all command line options. 1139 */ 1140 1141 static void 1142 ckopts(long mask) 1143 { 1144 int oflag; 1145 char *t_p; 1146 long errmsk; 1147 uid_t Euid = geteuid(); /* Effective uid of invoker */ 1148 #ifdef SOLARIS_PRIVS 1149 priv_set_t *privset; 1150 priv_set_t *zones_privset; 1151 #endif /* SOLARIS_PRIVS */ 1152 1153 if (mask & OCi) { 1154 errmsk = mask & INV_MSK4i; 1155 } else if (mask & OCo) { 1156 errmsk = mask & INV_MSK4o; 1157 } else if (mask & OCp) { 1158 errmsk = mask & INV_MSK4p; 1159 } else { 1160 msg(ERR, "One of -i, -o or -p must be specified."); 1161 errmsk = 0; 1162 } 1163 1164 if (errmsk) { 1165 /* if non-zero, invalid options were specified */ 1166 Error_cnt++; 1167 } 1168 1169 if ((mask & OCa) && (mask & OCm) && ((mask & OCi) || 1170 (mask & OCo))) { 1171 msg(ERR, "-a and -m are mutually exclusive."); 1172 } 1173 1174 if ((mask & OCc) && (mask & OCH) && (strcmp("odc", Hdr_p))) { 1175 msg(ERR, "-c and -H are mutually exclusive."); 1176 } 1177 1178 if ((mask & OCv) && (mask & OCV)) { 1179 msg(ERR, "-v and -V are mutually exclusive."); 1180 } 1181 1182 if ((mask & OCt) && (mask & OCV)) { 1183 msg(ERR, "-t and -V are mutually exclusive."); 1184 } 1185 1186 if ((mask & OCB) && (mask & OCC)) { 1187 msg(ERR, "-B and -C are mutually exclusive."); 1188 } 1189 1190 if ((mask & OCH) && (mask & OC6)) { 1191 msg(ERR, "-H and -6 are mutually exclusive."); 1192 } 1193 1194 if ((mask & OCM) && !((mask & OCI) || (mask & OCO))) { 1195 msg(ERR, "-M not meaningful without -O or -I."); 1196 } 1197 1198 if ((mask & OCA) && !(mask & OCO)) { 1199 msg(ERR, "-A requires the -O option."); 1200 } 1201 1202 if (Bufsize <= 0) { 1203 msg(ERR, "Illegal size given for -C option."); 1204 } 1205 1206 if (mask & OCH) { 1207 t_p = Hdr_p; 1208 1209 while (*t_p != NULL) { 1210 if (isupper(*t_p)) { 1211 *t_p = 'a' + (*t_p - 'A'); 1212 } 1213 1214 t_p++; 1215 } 1216 1217 if (!(strcmp("odc", Hdr_p))) { 1218 Hdr_type = CHR; 1219 Max_namesz = CPATH; 1220 Onecopy = 0; 1221 Use_old_stat = 1; 1222 } else if (!(strcmp("crc", Hdr_p))) { 1223 Hdr_type = CRC; 1224 Max_namesz = APATH; 1225 Onecopy = 1; 1226 } else if (!(strcmp("tar", Hdr_p))) { 1227 if (Args & OCo) { 1228 Hdr_type = USTAR; 1229 Max_namesz = HNAMLEN - 1; 1230 } else { 1231 Hdr_type = TAR; 1232 Max_namesz = TNAMLEN - 1; 1233 } 1234 Onecopy = 0; 1235 } else if (!(strcmp("ustar", Hdr_p))) { 1236 Hdr_type = USTAR; 1237 Max_namesz = HNAMLEN - 1; 1238 Onecopy = 0; 1239 } else if (!(strcmp("bar", Hdr_p))) { 1240 if ((Args & OCo) || (Args & OCp)) { 1241 msg(ERR, 1242 "Header type bar can only be used with -i"); 1243 } 1244 1245 if (Args & OCP) { 1246 msg(ERR, 1247 "Can't preserve using bar header"); 1248 } 1249 1250 Hdr_type = BAR; 1251 Max_namesz = TNAMLEN - 1; 1252 Onecopy = 0; 1253 } else { 1254 msg(ERR, "Invalid header \"%s\" specified", Hdr_p); 1255 } 1256 } 1257 1258 if (mask & OCr) { 1259 Rtty_p = fopen(Ttyname, "r"); 1260 Wtty_p = fopen(Ttyname, "w"); 1261 1262 if (Rtty_p == (FILE *)NULL || Wtty_p == (FILE *)NULL) { 1263 msg(ERR, "Cannot rename, \"%s\" missing", Ttyname); 1264 } 1265 } 1266 1267 if ((mask & OCE) && (Ef_p = fopen(Efil_p, "r")) == (FILE *)NULL) { 1268 msg(ERR, "Cannot open \"%s\" to read patterns", Efil_p); 1269 } 1270 1271 if ((mask & OCI) && (Archive = open(IOfil_p, O_RDONLY)) < 0) { 1272 msg(ERR, "Cannot open \"%s\" for input", IOfil_p); 1273 } 1274 1275 if (mask & OCO) { 1276 if (mask & OCA) { 1277 if ((Archive = open(IOfil_p, O_RDWR)) < 0) { 1278 msg(ERR, 1279 "Cannot open \"%s\" for append", 1280 IOfil_p); 1281 } 1282 } else { 1283 oflag = (O_WRONLY | O_CREAT | O_TRUNC); 1284 1285 if ((Archive = open(IOfil_p, oflag, 0777)) < 0) { 1286 msg(ERR, 1287 "Cannot open \"%s\" for output", 1288 IOfil_p); 1289 } 1290 } 1291 } 1292 1293 #ifdef SOLARIS_PRIVS 1294 if ((privset = priv_allocset()) == NULL) { 1295 msg(ERR, "Unable to allocate privilege set"); 1296 } else if (getppriv(PRIV_EFFECTIVE, privset) != 0) { 1297 msg(ERR, "Unable to obtain privilege set"); 1298 } else { 1299 zones_privset = priv_str_to_set("zone", "", NULL); 1300 if (zones_privset != NULL) { 1301 privileged = (priv_issubset(zones_privset, 1302 privset) == B_TRUE); 1303 priv_freeset(zones_privset); 1304 } else { 1305 msg(ERR, "Unable to map privilege to privilege set"); 1306 } 1307 } 1308 if (privset != NULL) { 1309 priv_freeset(privset); 1310 } 1311 #else 1312 privileged = (Euid == 0); 1313 #endif /* SOLARIS_PRIVS */ 1314 1315 if (mask & OCR) { 1316 if ((Rpw_p = getpwnam(Own_p)) == (struct passwd *)NULL) { 1317 msg(ERR, "\"%s\" is not a valid user id", Own_p); 1318 } else if ((Euid != Rpw_p->pw_uid) && !privileged) { 1319 msg(ERR, "R option only valid for super-user or " 1320 "id matches login id of user executing cpio"); 1321 } 1322 } 1323 1324 if ((mask & OCo) && !(mask & OCO)) { 1325 Out_p = stderr; 1326 } 1327 1328 if ((mask & OCp) && ((mask & (OCB|OCC)) == 0)) { 1329 /* 1330 * We are in pass mode with no block size specified. Use the 1331 * larger of the native page size and 8192. 1332 */ 1333 1334 Bufsize = (PageSize > 8192) ? PageSize : 8192; 1335 } 1336 } 1337 1338 /* 1339 * cksum: Calculate the simple checksum of a file (CRC) or header 1340 * (TARTYP (TAR and USTAR)). For -o and the CRC header, the file is opened and 1341 * the checksum is calculated. For -i and the CRC header, the checksum 1342 * is calculated as each block is transferred from the archive I/O buffer 1343 * to the file system I/O buffer. The TARTYP (TAR and USTAR) headers calculate 1344 * the simple checksum of the header (with the checksum field of the 1345 * header initialized to all spaces (\040). 1346 */ 1347 1348 static long 1349 cksum(char hdr, int byt_cnt, int *err) 1350 { 1351 char *crc_p, *end_p; 1352 int cnt; 1353 long checksum = 0L, have; 1354 off_t lcnt; 1355 1356 if (err != NULL) 1357 *err = 0; 1358 switch (hdr) { 1359 case CRC: 1360 if (Args & OCi) { /* do running checksum */ 1361 end_p = Buffr.b_out_p + byt_cnt; 1362 for (crc_p = Buffr.b_out_p; crc_p < end_p; crc_p++) 1363 checksum += (long)*crc_p; 1364 break; 1365 } 1366 /* OCo - do checksum of file */ 1367 lcnt = G_p->g_filesz; 1368 1369 while (lcnt > 0) { 1370 have = (lcnt < Bufsize) ? lcnt : Bufsize; 1371 errno = 0; 1372 if (read(Ifile, Buf_p, have) != have) { 1373 msg(ERR, "Error computing checksum."); 1374 if (err != NULL) 1375 *err = 1; 1376 break; 1377 } 1378 end_p = Buf_p + have; 1379 for (crc_p = Buf_p; crc_p < end_p; crc_p++) 1380 checksum += (long)*crc_p; 1381 lcnt -= have; 1382 } 1383 if (lseek(Ifile, (off_t)0, SEEK_ABS) < 0) 1384 msg(ERRN, "Cannot reset file after checksum"); 1385 break; 1386 case TARTYP: /* TAR and USTAR */ 1387 crc_p = Thdr_p->tbuf.t_cksum; 1388 for (cnt = 0; cnt < TCRCLEN; cnt++) { 1389 *crc_p = '\040'; 1390 crc_p++; 1391 } 1392 crc_p = (char *)Thdr_p; 1393 for (cnt = 0; cnt < TARSZ; cnt++) { 1394 /* 1395 * tar uses unsigned checksum, so we must use unsigned 1396 * here in order to be able to read tar archives. 1397 */ 1398 checksum += (long)((unsigned char)(*crc_p)); 1399 crc_p++; 1400 } 1401 break; 1402 default: 1403 msg(EXT, "Impossible header type."); 1404 } /* hdr */ 1405 return (checksum); 1406 } 1407 1408 /* 1409 * creat_hdr: Fill in the generic header structure with the specific 1410 * header information based on the value of Hdr_type. 1411 * 1412 * return (1) if this process was successful, and (0) otherwise. 1413 */ 1414 1415 static int 1416 creat_hdr(void) 1417 { 1418 ushort_t ftype; 1419 int fullnamesize; 1420 dev_t dev; 1421 ino_t ino; 1422 1423 ftype = SrcSt.st_mode & Ftype; 1424 Adir = (ftype == S_IFDIR); 1425 Aspec = (ftype == S_IFBLK || ftype == S_IFCHR || ftype == S_IFIFO || 1426 ftype == S_IFSOCK); 1427 switch (Hdr_type) { 1428 case BIN: 1429 Gen.g_magic = CMN_BIN; 1430 break; 1431 case CHR: 1432 Gen.g_magic = CMN_BIN; 1433 break; 1434 case ASC: 1435 Gen.g_magic = CMN_ASC; 1436 break; 1437 case CRC: 1438 Gen.g_magic = CMN_CRC; 1439 break; 1440 case USTAR: 1441 /* 1442 * If the length of the full name is greater than 256, 1443 * print out a message and return. 1444 */ 1445 if ((fullnamesize = strlen(Gen.g_nam_p)) > MAXNAM) { 1446 msg(ERR, 1447 "%s: file name too long", Gen.g_nam_p); 1448 return (0); 1449 } else if (fullnamesize > NAMSIZ) { 1450 /* 1451 * The length of the full name is greater than 1452 * 100, so we must split the filename from the 1453 * path 1454 */ 1455 char namebuff[NAMSIZ+1]; 1456 char prebuff[PRESIZ+1]; 1457 char *lastslash; 1458 int presize, namesize; 1459 1460 (void) memset(namebuff, '\0', 1461 sizeof (namebuff)); 1462 (void) memset(prebuff, '\0', sizeof (prebuff)); 1463 1464 lastslash = strrchr(Gen.g_nam_p, '/'); 1465 1466 if (lastslash != NULL) { 1467 namesize = strlen(++lastslash); 1468 presize = fullnamesize - namesize - 1; 1469 } else { 1470 namesize = fullnamesize; 1471 lastslash = Gen.g_nam_p; 1472 presize = 0; 1473 } 1474 1475 /* 1476 * If the filename is greater than 100 we can't 1477 * archive the file 1478 */ 1479 if (namesize > NAMSIZ) { 1480 msg(ERR, 1481 "%s: filename is greater than %d", 1482 lastslash, NAMSIZ); 1483 return (0); 1484 } 1485 (void) strncpy(&namebuff[0], lastslash, 1486 namesize); 1487 /* 1488 * If the prefix is greater than 155 we can't 1489 * archive the file. 1490 */ 1491 if (presize > PRESIZ) { 1492 msg(ERR, 1493 "%s: prefix is greater than %d", 1494 Gen.g_nam_p, PRESIZ); 1495 return (0); 1496 } 1497 (void) strncpy(&prebuff[0], Gen.g_nam_p, 1498 presize); 1499 1500 Gen.g_tname = e_zalloc(E_EXIT, namesize + 1); 1501 (void) strcpy(Gen.g_tname, namebuff); 1502 1503 Gen.g_prefix = e_zalloc(E_EXIT, presize + 1); 1504 (void) strcpy(Gen.g_prefix, prebuff); 1505 } else { 1506 Gen.g_tname = Gen.g_nam_p; 1507 } 1508 (void) strcpy(Gen.g_tmagic, "ustar"); 1509 (void) strcpy(Gen.g_version, "00"); 1510 1511 dpasswd = getpwuid(SrcSt.st_uid); 1512 if (dpasswd == (struct passwd *)NULL) { 1513 msg(EPOST, 1514 "cpio: could not get passwd information " 1515 "for %s%s%s", 1516 (Gen.g_attrnam_p == (char *)NULL) ? 1517 Gen.g_nam_p : Gen.g_attrfnam_p, 1518 (Gen.g_attrnam_p == (char *)NULL) ? 1519 "" : gettext(" Attribute "), 1520 (Gen.g_attrnam_p == (char *)NULL) ? 1521 "" : Gen.g_attrnam_p); 1522 /* make name null string */ 1523 Gen.g_uname[0] = '\0'; 1524 } else { 1525 (void) strncpy(&Gen.g_uname[0], 1526 dpasswd->pw_name, 32); 1527 } 1528 dgroup = getgrgid(SrcSt.st_gid); 1529 if (dgroup == (struct group *)NULL) { 1530 msg(EPOST, 1531 "cpio: could not get group information " 1532 "for %s%s%S", 1533 (Gen.g_attrnam_p == (char *)NULL) ? 1534 Gen.g_nam_p : Gen.g_attrfnam_p, 1535 (Gen.g_attrnam_p == (char *)NULL) ? 1536 "" : gettext(" Attribute "), 1537 (Gen.g_attrnam_p == (char *)NULL) ? 1538 "" : Gen.g_attrnam_p); 1539 /* make name null string */ 1540 Gen.g_gname[0] = '\0'; 1541 } else { 1542 (void) strncpy(&Gen.g_gname[0], 1543 dgroup->gr_name, 32); 1544 } 1545 Gen.g_typeflag = tartype(ftype); 1546 /* FALLTHROUGH */ 1547 case TAR: 1548 (void) memset(T_lname, '\0', sizeof (T_lname)); 1549 break; 1550 default: 1551 msg(EXT, "Impossible header type."); 1552 } 1553 1554 dev = SrcSt.st_dev; 1555 ino = SrcSt.st_ino; 1556 1557 if (Use_old_stat) { 1558 SrcSt = *OldSt; 1559 } 1560 1561 Gen.g_namesz = strlen(Gen.g_nam_p) + 1; 1562 Gen.g_uid = SrcSt.st_uid; 1563 Gen.g_gid = SrcSt.st_gid; 1564 Gen.g_dev = SrcSt.st_dev; 1565 1566 if (Use_old_stat) { 1567 /* -Hodc */ 1568 1569 sl_info_t *p = sl_search(dev, ino); 1570 Gen.g_ino = p ? p->sl_ino2 : -1; 1571 1572 if (Gen.g_ino == (ulong_t)-1) { 1573 msg(ERR, "%s%s%s: cannot be archived - inode too big " 1574 "for -Hodc format", 1575 (Gen.g_attrnam_p == (char *)NULL) ? 1576 Gen.g_nam_p : Gen.g_attrfnam_p, 1577 (Gen.g_attrnam_p == (char *)NULL) ? 1578 "" : gettext(" Attribute "), 1579 (Gen.g_attrnam_p == (char *)NULL) ? 1580 "" : Gen.g_attrnam_p); 1581 return (0); 1582 } 1583 } else { 1584 Gen.g_ino = SrcSt.st_ino; 1585 } 1586 1587 Gen.g_mode = SrcSt.st_mode; 1588 Gen.g_mtime = SrcSt.st_mtime; 1589 Gen.g_nlink = (Adir) ? SrcSt.st_nlink 1590 : sl_numlinks(dev, ino); 1591 1592 if (ftype == S_IFREG || ftype == S_IFLNK) 1593 Gen.g_filesz = (off_t)SrcSt.st_size; 1594 else 1595 Gen.g_filesz = (off_t)0; 1596 Gen.g_rdev = SrcSt.st_rdev; 1597 return (1); 1598 } 1599 1600 /* 1601 * creat_lnk: Create a link from the existing name1_p to name2_p. 1602 */ 1603 1604 static 1605 int 1606 creat_lnk(int dirfd, char *name1_p, char *name2_p) 1607 { 1608 int cnt = 0; 1609 1610 do { 1611 errno = 0; 1612 if (!link(name1_p, name2_p)) { 1613 if (aclp != NULL) { 1614 acl_free(aclp); 1615 aclp = NULL; 1616 acl_is_set = 0; 1617 } 1618 cnt = 0; 1619 break; 1620 } else if ((errno == EEXIST) && (cnt == 0)) { 1621 struct stat lsb1; 1622 struct stat lsb2; 1623 1624 /* 1625 * Check to see if we are trying to link this 1626 * file to itself. If so, count the effort as 1627 * successful. If the two files are different, 1628 * or if either lstat is unsuccessful, proceed 1629 * as we would have otherwise; the appropriate 1630 * error will be reported subsequently. 1631 */ 1632 1633 if (lstat(name1_p, &lsb1) != 0) { 1634 msg(ERR, "Cannot lstat source file %s", 1635 name1_p); 1636 } else { 1637 if (lstat(name2_p, &lsb2) != 0) { 1638 msg(ERR, "Cannot lstat " 1639 "destination file %s", name2_p); 1640 } else { 1641 if (lsb1.st_dev == lsb2.st_dev && 1642 lsb1.st_ino == lsb2.st_ino) { 1643 VERBOSE((Args & (OCv | OCV)), 1644 name2_p); 1645 return (0); 1646 } 1647 } 1648 } 1649 1650 if (!(Args & OCu) && G_p->g_mtime <= DesSt.st_mtime) 1651 msg(ERR, "Existing \"%s\" same age or newer", 1652 name2_p); 1653 else if (unlinkat(dirfd, get_component(name2_p), 0) < 0) 1654 msg(ERRN, "Error cannot unlink \"%s\"", 1655 name2_p); 1656 } 1657 cnt++; 1658 } while ((cnt < 2) && missdir(name2_p) == 0); 1659 if (!cnt) { 1660 char *newname; 1661 char *fromname; 1662 char *attrname; 1663 1664 newname = name2_p; 1665 fromname = name1_p; 1666 attrname = Gen.g_attrnam_p; 1667 if (attrname) { 1668 if (Args & OCp) { 1669 newname = fromname = Fullnam_p; 1670 } else { 1671 newname = Gen.g_attrfnam_p; 1672 } 1673 } 1674 if (Args & OCv) { 1675 (void) fprintf(Err_p, 1676 gettext("%s%s%s linked to %s%s%s\n"), newname, 1677 (attrname == (char *)NULL) ? 1678 "" : gettext(" attribute "), 1679 (attrname == (char *)NULL) ? 1680 "" : attrname, fromname, 1681 (attrname == (char *)NULL) ? 1682 "" : gettext(" attribute "), 1683 (attrname == (char *)NULL) ? 1684 "" : name1_p); 1685 } 1686 VERBOSE((Args & (OCv | OCV)), newname); 1687 } else if (cnt == 1) 1688 msg(ERRN, 1689 "Unable to create directory for \"%s\"", name2_p); 1690 else if (cnt == 2) 1691 msg(ERRN, 1692 "Cannot link \"%s\" and \"%s\"", name1_p, name2_p); 1693 return (cnt); 1694 } 1695 1696 /* 1697 * creat_spec: 1698 * Create one of the following: 1699 * directory 1700 * character special file 1701 * block special file 1702 * fifo 1703 * socket 1704 */ 1705 1706 static int 1707 creat_spec(int dirfd) 1708 { 1709 char *nam_p; 1710 int cnt, result, rv = 0; 1711 char *curdir; 1712 char *lastslash; 1713 1714 Do_rename = 0; /* creat_tmp() may reset this */ 1715 1716 if (Args & OCp) { 1717 nam_p = Fullnam_p; 1718 } else { 1719 nam_p = G_p->g_nam_p; 1720 } 1721 1722 /* 1723 * Is this the extraction of the hidden attribute directory? 1724 * If so then just set the mode/times correctly, and return. 1725 */ 1726 1727 if (Hiddendir) { 1728 if (Args & OCR) { 1729 if (fchownat(dirfd, ".", Rpw_p->pw_uid, 1730 Rpw_p->pw_gid, 0) != 0) { 1731 msg(ERRN, 1732 "Cannot chown() \"attribute directory of " 1733 "file %s\"", G_p->g_attrfnam_p); 1734 } 1735 } else if ((fchownat(dirfd, ".", G_p->g_uid, 1736 G_p->g_gid, 0) != 0) && privileged) { 1737 msg(ERRN, 1738 "Cannot chown() \"attribute directory of " 1739 "file %s\"", G_p->g_attrfnam_p); 1740 } 1741 1742 if (fchmod(dirfd, G_p->g_mode) != 0) { 1743 msg(ERRN, 1744 "Cannot chmod() \"attribute directory of " 1745 "file %s\"", G_p->g_attrfnam_p); 1746 } 1747 1748 acl_is_set = 0; 1749 if (Pflag && aclp != NULL) { 1750 if (facl_set(dirfd, aclp) < 0) { 1751 msg(ERRN, 1752 "failed to set acl on attribute" 1753 " directory of %s ", G_p->g_attrfnam_p); 1754 } else { 1755 acl_is_set = 1; 1756 } 1757 acl_free(aclp); 1758 aclp = NULL; 1759 } 1760 1761 return (1); 1762 } 1763 1764 result = stat(nam_p, &DesSt); 1765 1766 if (ustar_dir() || Adir) { 1767 /* 1768 * The archive file is a directory. 1769 * Skip "." and ".." 1770 */ 1771 1772 curdir = strrchr(nam_p, '.'); 1773 1774 if (curdir != NULL && curdir[1] == NULL) { 1775 lastslash = strrchr(nam_p, '/'); 1776 1777 if (lastslash != NULL) { 1778 lastslash++; 1779 } else { 1780 lastslash = nam_p; 1781 } 1782 1783 if (!(strcmp(lastslash, ".")) || 1784 !(strcmp(lastslash, ".."))) { 1785 return (1); 1786 } 1787 } 1788 1789 if (result == 0) { 1790 /* A file by the same name exists. */ 1791 1792 /* Take care of ACLs */ 1793 acl_is_set = 0; 1794 1795 if (Pflag && aclp != NULL) { 1796 if (acl_set(nam_p, aclp) < 0) { 1797 msg(ERRN, 1798 "\"%s\": failed to set acl", 1799 nam_p); 1800 } else { 1801 acl_is_set = 1; 1802 } 1803 1804 acl_free(aclp); 1805 aclp = NULL; 1806 } 1807 if (Args & OCd) { 1808 /* 1809 * We are creating directories. Keep the 1810 * existing file. 1811 */ 1812 1813 rstfiles(U_KEEP, dirfd); 1814 } 1815 1816 /* Report success. */ 1817 1818 return (1); 1819 } 1820 } else { 1821 /* The archive file is not a directory. */ 1822 1823 if (result == 0) { 1824 /* 1825 * A file by the same name exists. Move it to a 1826 * temporary file. 1827 */ 1828 1829 if (creat_tmp(nam_p) < 0) { 1830 /* 1831 * We weren't able to create the temp file. 1832 * Report failure. 1833 */ 1834 1835 return (0); 1836 } 1837 } 1838 } 1839 1840 /* 1841 * This pile tries to create the file directly, and, if there is a 1842 * problem, creates missing directories, and then tries to create the 1843 * file again. Two strikes and you're out. 1844 */ 1845 1846 cnt = 0; 1847 1848 do { 1849 if (ustar_dir() || Adir) { 1850 /* The archive file is a directory. */ 1851 1852 result = mkdir(nam_p, G_p->g_mode); 1853 } else if (ustar_spec() || Aspec) { 1854 /* 1855 * The archive file is block special, 1856 * char special, socket, or a fifo. 1857 * Note that, for a socket, the third 1858 * parameter to mknod() is ignored. 1859 */ 1860 1861 result = mknod(nam_p, (int)G_p->g_mode, 1862 (int)G_p->g_rdev); 1863 } 1864 1865 if (result >= 0) { 1866 /* 1867 * The file creation succeeded. Take care of the ACLs. 1868 */ 1869 1870 acl_is_set = 0; 1871 1872 if (Pflag && aclp != NULL) { 1873 if (acl_set(nam_p, aclp) < 0) { 1874 msg(ERRN, 1875 "\"%s\": failed to set acl", nam_p); 1876 } else { 1877 acl_is_set = 1; 1878 } 1879 1880 acl_free(aclp); 1881 aclp = NULL; 1882 } 1883 1884 cnt = 0; 1885 break; 1886 } 1887 1888 cnt++; 1889 } while (cnt < 2 && missdir(nam_p) == 0); 1890 1891 switch (cnt) { 1892 case 0: 1893 rv = 1; 1894 rstfiles(U_OVER, dirfd); 1895 break; 1896 1897 case 1: 1898 msg(ERRN, 1899 "Cannot create directory for \"%s\"", nam_p); 1900 1901 if (*Over_p == '\0') { 1902 rstfiles(U_KEEP, dirfd); 1903 } 1904 1905 break; 1906 1907 case 2: 1908 if (ustar_dir() || Adir) { 1909 msg(ERRN, "Cannot create directory \"%s\"", nam_p); 1910 } else if (ustar_spec() || Aspec) { 1911 msg(ERRN, "Cannot mknod() \"%s\"", nam_p); 1912 } 1913 1914 if (*Over_p == '\0') { 1915 rstfiles(U_KEEP, dirfd); 1916 } 1917 1918 break; 1919 1920 default: 1921 msg(EXT, "Impossible case."); 1922 } 1923 1924 return (rv); 1925 } 1926 1927 /* 1928 * creat_tmp: 1929 */ 1930 1931 static int 1932 creat_tmp(char *nam_p) 1933 { 1934 char *t_p; 1935 int cwd; 1936 1937 if ((Args & OCp) && G_p->g_ino == DesSt.st_ino && 1938 G_p->g_dev == DesSt.st_dev) { 1939 msg(ERR, "Attempt to pass a file to itself."); 1940 return (-1); 1941 } 1942 1943 if (G_p->g_mtime <= DesSt.st_mtime && !(Args & OCu)) { 1944 msg(ERR, "Existing \"%s\" same age or newer", nam_p); 1945 return (-1); 1946 } 1947 1948 /* Make the temporary file name. */ 1949 1950 (void) strcpy(Over_p, nam_p); 1951 t_p = Over_p + strlen(Over_p); 1952 1953 while (t_p != Over_p) { 1954 if (*(t_p - 1) == '/') 1955 break; 1956 t_p--; 1957 } 1958 1959 (void) strcpy(t_p, "XXXXXX"); 1960 1961 if (G_p->g_attrnam_p != (char *)NULL) { 1962 /* 1963 * Save our current directory, so we can go into 1964 * the attribute directory to make the temp file 1965 * and then return. 1966 */ 1967 1968 cwd = save_cwd(); 1969 (void) fchdir(G_p->g_dirfd); 1970 } 1971 1972 (void) mktemp(Over_p); 1973 1974 if (G_p->g_attrnam_p != (char *)NULL) { 1975 /* Return to the current directory. */ 1976 1977 rest_cwd(cwd); 1978 } 1979 1980 if (*Over_p == '\0') { 1981 /* mktemp reports a failure. */ 1982 1983 msg(ERR, "Cannot get temporary file name."); 1984 return (-1); 1985 } 1986 1987 /* 1988 * If it's a regular file, write to the temporary file, and then rename 1989 * in order to accomodate potential executables. 1990 * 1991 * Note: g_typeflag is only defined (set) for USTAR archive types. It 1992 * defaults to 0 in the cpio-format-regular file case, so this test 1993 * succeeds. 1994 */ 1995 1996 if (G_p->g_typeflag == 0 && 1997 (DesSt.st_mode & (ulong_t)Ftype) == S_IFREG && 1998 (G_p->g_mode & (ulong_t)Ftype) == S_IFREG) { 1999 /* 2000 * The archive file and the filesystem file are both regular 2001 * files. We write to the temporary file in this case. 2002 */ 2003 2004 if (Args & OCp) { 2005 if (G_p->g_attrnam_p == (char *)NULL) { 2006 Fullnam_p = Over_p; 2007 } else { 2008 Attrfile_p = Over_p; 2009 } 2010 } else { 2011 G_p->g_nam_p = Over_p; 2012 if (G_p->g_attrnam_p != (char *)NULL) { 2013 Attrfile_p = Over_p; 2014 } 2015 } 2016 2017 if (G_p->g_attrnam_p == (char *)NULL) { 2018 Over_p = nam_p; 2019 } else { 2020 Over_p = G_p->g_attrnam_p; 2021 } 2022 2023 Do_rename = 1; 2024 } else { 2025 /* 2026 * Either the archive file or the filesystem file is not a 2027 * regular file. 2028 */ 2029 2030 Do_rename = 0; 2031 2032 if (S_ISDIR(DesSt.st_mode)) { 2033 /* 2034 * The filesystem file is a directory. 2035 * 2036 * Save the current working directory because we will 2037 * want to restore it back just in case remove_dir() 2038 * fails or get confused about where we should be. 2039 */ 2040 2041 *Over_p = '\0'; 2042 cwd = save_cwd(); 2043 2044 if (remove_dir(nam_p) < 0) { 2045 msg(ERRN, 2046 "Cannot remove the directory \"%s\"", 2047 nam_p); 2048 /* 2049 * Restore working directory back to the one 2050 * saved earlier. 2051 */ 2052 2053 rest_cwd(cwd); 2054 return (-1); 2055 } 2056 2057 /* 2058 * Restore working directory back to the one 2059 * saved earlier 2060 */ 2061 2062 rest_cwd(cwd); 2063 } else { 2064 /* 2065 * The file is not a directory. Will use the original 2066 * link/unlink construct, however, if the file is 2067 * namefs, link would fail with EXDEV. Therefore, we 2068 * use rename() first to back up the file. 2069 */ 2070 if (rename(nam_p, Over_p) < 0) { 2071 /* 2072 * If rename failed, try old construction 2073 * method. 2074 */ 2075 if (link(nam_p, Over_p) < 0) { 2076 msg(ERRN, 2077 "Cannot create temporary file"); 2078 *Over_p = '\0'; 2079 return (-1); 2080 } 2081 2082 if (unlink(nam_p) < 0) { 2083 msg(ERRN, 2084 "Cannot unlink() current \"%s\"", 2085 nam_p); 2086 (void) unlink(Over_p); 2087 *Over_p = '\0'; 2088 return (-1); 2089 } 2090 } 2091 } 2092 } 2093 2094 return (1); 2095 } 2096 2097 /* 2098 * data_in: If proc_mode == P_PROC, bread() the file's data from the archive 2099 * and write(2) it to the open fdes gotten from openout(). If proc_mode == 2100 * P_SKIP, or becomes P_SKIP (due to errors etc), bread(2) the file's data 2101 * and ignore it. If the user specified any of the "swap" options (b, s or S), 2102 * and the length of the file is not appropriate for that action, do not 2103 * perform the "swap", otherwise perform the action on a buffer by buffer basis. 2104 * If the CRC header was selected, calculate a running checksum as each buffer 2105 * is processed. 2106 */ 2107 2108 static void 2109 data_in(int proc_mode) 2110 { 2111 char *nam_p; 2112 int cnt, pad; 2113 long cksumval = 0L; 2114 off_t filesz; 2115 int rv, swapfile = 0; 2116 int compress_flag = 0; /* if the file is compressed */ 2117 int cstatus = 0; 2118 FILE *pipef; /* pipe for bar to do de-compression */ 2119 2120 2121 if (G_p->g_attrnam_p != (char *)NULL) { 2122 nam_p = G_p->g_attrnam_p; 2123 } else { 2124 nam_p = G_p->g_nam_p; 2125 } 2126 2127 2128 if (((G_p->g_mode & Ftype) == S_IFLNK && proc_mode != P_SKIP) || 2129 (Hdr_type == BAR && bar_linkflag == '2' && proc_mode != P_SKIP)) { 2130 proc_mode = P_SKIP; 2131 VERBOSE((Args & (OCv | OCV)), nam_p); 2132 } 2133 if (Args & (OCb | OCs | OCS)) { /* verfify that swapping is possible */ 2134 swapfile = 1; 2135 if (Args & (OCs | OCb) && G_p->g_filesz % 2) { 2136 msg(ERR, 2137 "Cannot swap bytes of \"%s\", odd number of bytes", 2138 nam_p); 2139 swapfile = 0; 2140 } 2141 if (Args & (OCS | OCb) && G_p->g_filesz % 4) { 2142 msg(ERR, 2143 "Cannot swap halfwords of \"%s\", odd number " 2144 "of halfwords", nam_p); 2145 swapfile = 0; 2146 } 2147 } 2148 filesz = G_p->g_filesz; 2149 2150 /* This writes out the file from the archive */ 2151 2152 while (filesz > 0) { 2153 cnt = (int)(filesz > CPIOBSZ) ? CPIOBSZ : filesz; 2154 FILL(cnt); 2155 if (proc_mode != P_SKIP) { 2156 if (Hdr_type == CRC) 2157 cksumval += cksum(CRC, cnt, NULL); 2158 if (swapfile) 2159 swap(Buffr.b_out_p, cnt); 2160 errno = 0; 2161 2162 /* 2163 * if the bar archive is compressed, set up a pipe and 2164 * do the de-compression while reading in the file 2165 */ 2166 if (Hdr_type == BAR) { 2167 if (compress_flag == 0 && Compressed) { 2168 setup_uncompress(&pipef); 2169 compress_flag++; 2170 } 2171 2172 } 2173 2174 rv = write(Ofile, Buffr.b_out_p, cnt); 2175 if (rv < cnt) { 2176 if (rv < 0) 2177 msg(ERRN, "Cannot write \"%s\"", nam_p); 2178 else 2179 msg(EXTN, "Cannot write \"%s\"", nam_p); 2180 proc_mode = P_SKIP; 2181 rstfiles(U_KEEP, G_p->g_dirfd); 2182 cstatus = close(Ofile); 2183 Ofile = 0; 2184 if (cstatus != 0) { 2185 msg(EXTN, "close error"); 2186 } 2187 } 2188 } 2189 Buffr.b_out_p += cnt; 2190 Buffr.b_cnt -= (long)cnt; 2191 filesz -= (off_t)cnt; 2192 } /* filesz */ 2193 2194 pad = (Pad_val + 1 - (G_p->g_filesz & Pad_val)) & Pad_val; 2195 if (pad != 0) { 2196 FILL(pad); 2197 Buffr.b_out_p += pad; 2198 Buffr.b_cnt -= pad; 2199 } 2200 if (proc_mode != P_SKIP) { 2201 if (Hdr_type == CRC && Gen.g_cksum != cksumval) { 2202 msg(ERR, "\"%s\" - checksum error", nam_p); 2203 rstfiles(U_KEEP, G_p->g_dirfd); 2204 } else 2205 rstfiles(U_OVER, G_p->g_dirfd); 2206 if (Hdr_type == BAR && compress_flag) { 2207 (void) pclose(pipef); 2208 } else { 2209 cstatus = close(Ofile); 2210 } 2211 Ofile = 0; 2212 if (cstatus != 0) { 2213 msg(EXTN, "close error"); 2214 } 2215 } 2216 VERBOSE((proc_mode != P_SKIP && (Args & (OCv | OCV))), G_p->g_nam_p); 2217 Finished = 1; 2218 } 2219 2220 /* 2221 * data_out: open(2) the file to be archived, compute the checksum 2222 * of it's data if the CRC header was specified and write the header. 2223 * read(2) each block of data and bwrite() it to the archive. For TARTYP (TAR 2224 * and USTAR) archives, pad the data with NULLs to the next 512 byte boundary. 2225 */ 2226 2227 static void 2228 data_out(void) 2229 { 2230 char *nam_p; 2231 int cnt, amount_read, pad; 2232 off_t amt_to_read, real_filesz; 2233 int errret = 0; 2234 2235 nam_p = G_p->g_nam_p; 2236 if (Aspec) { 2237 if (Pflag && aclp != NULL) { 2238 char *secinfo = NULL; 2239 int len = 0; 2240 2241 /* append security attributes */ 2242 if (append_secattr(&secinfo, &len, aclp) == -1) { 2243 msg(ERR, 2244 "can create security information"); 2245 } 2246 /* call append_secattr() if more than one */ 2247 2248 if (len > 0) { 2249 /* write ancillary only if there is sec info */ 2250 (void) write_hdr(ARCHIVE_ACL, (off_t)len); 2251 (void) write_ancillary(secinfo, len); 2252 } 2253 } 2254 write_hdr(ARCHIVE_NORMAL, (off_t)0); 2255 rstfiles(U_KEEP, G_p->g_dirfd); 2256 VERBOSE((Args & (OCv | OCV)), nam_p); 2257 return; 2258 } 2259 if ((G_p->g_mode & Ftype) == S_IFLNK && (Hdr_type != 2260 USTAR && Hdr_type != TAR)) { /* symbolic link */ 2261 int size; 2262 write_hdr(ARCHIVE_NORMAL, (off_t)0); 2263 2264 FLUSH(G_p->g_filesz); 2265 errno = 0; 2266 2267 /* Note that "size" and G_p->g_filesz are the same number */ 2268 2269 if ((size = readlink(nam_p, Buffr.b_in_p, G_p->g_filesz)) < 2270 0) { 2271 msg(ERRN, "Cannot read symbolic link \"%s\"", nam_p); 2272 return; 2273 } 2274 2275 /* 2276 * Note that it is OK not to add the NUL after the name read by 2277 * readlink, because it is not being used subsequently. 2278 */ 2279 2280 Buffr.b_in_p += size; 2281 Buffr.b_cnt += size; 2282 pad = (Pad_val + 1 - (size & Pad_val)) & Pad_val; 2283 if (pad != 0) { 2284 FLUSH(pad); 2285 (void) memcpy(Buffr.b_in_p, Empty, pad); 2286 Buffr.b_in_p += pad; 2287 Buffr.b_cnt += pad; 2288 } 2289 VERBOSE((Args & (OCv | OCV)), nam_p); 2290 return; 2291 } else if ((G_p->g_mode & Ftype) == S_IFLNK && 2292 (Hdr_type == USTAR || Hdr_type == TAR)) { 2293 int size; 2294 2295 /* 2296 * G_p->g_filesz is the length of the right-hand side of 2297 * the symlink "x -> y". 2298 * The tar link field is only NAMSIZ long. 2299 */ 2300 2301 if (G_p->g_filesz > NAMSIZ) { 2302 msg(ERRN, 2303 "Symbolic link too long \"%s\"", nam_p); 2304 return; 2305 } 2306 if ((size = readlink(nam_p, T_lname, G_p->g_filesz)) < 0) { 2307 msg(ERRN, 2308 "Cannot read symbolic link \"%s\"", nam_p); 2309 return; 2310 } 2311 T_lname[size] = '\0'; 2312 G_p->g_filesz = (off_t)0; 2313 write_hdr(ARCHIVE_NORMAL, (off_t)0); 2314 VERBOSE((Args & (OCv | OCV)), nam_p); 2315 return; 2316 } 2317 if ((Ifile = openfile(O_RDONLY)) < 0) { 2318 msg(ERR, "\"%s%s%s\" ?", 2319 (Gen.g_attrnam_p == (char *)NULL) ? 2320 nam_p : Gen.g_attrfnam_p, 2321 (Gen.g_attrnam_p == (char *)NULL) ? 2322 "" : gettext(" Attribute "), 2323 (Gen.g_attrnam_p == (char *)NULL) ? 2324 "" : Gen.g_attrnam_p); 2325 return; 2326 } 2327 2328 /* 2329 * Dump extended attribute header. 2330 */ 2331 2332 if (Gen.g_attrnam_p != (char *)NULL) { 2333 write_xattr_hdr(); 2334 } 2335 2336 if (Hdr_type == CRC) { 2337 long csum = cksum(CRC, 0, &errret); 2338 if (errret != 0) { 2339 G_p->g_cksum = (ulong_t)-1; 2340 msg(POST, "\"%s%s%s\" skipped", 2341 (Gen.g_attrnam_p == (char *)NULL) ? 2342 nam_p : Gen.g_attrfnam_p, 2343 (Gen.g_attrnam_p == (char *)NULL) ? 2344 "" : gettext(" Attribute "), 2345 (Gen.g_attrnam_p == (char *)NULL) ? 2346 "" : nam_p); 2347 (void) close(Ifile); 2348 return; 2349 } 2350 G_p->g_cksum = csum; 2351 } else { 2352 G_p->g_cksum = 0; 2353 } 2354 2355 /* 2356 * ACL has been retrieved in getname(). 2357 */ 2358 if (Pflag) { 2359 char *secinfo = NULL; 2360 int len = 0; 2361 2362 /* append security attributes */ 2363 if ((append_secattr(&secinfo, &len, aclp)) == -1) 2364 msg(ERR, "can create security information"); 2365 2366 /* call append_secattr() if more than one */ 2367 2368 if (len > 0) { 2369 /* write ancillary only if there is sec info */ 2370 (void) write_hdr(ARCHIVE_ACL, (off_t)len); 2371 (void) write_ancillary(secinfo, len); 2372 } 2373 } 2374 2375 write_hdr(ARCHIVE_NORMAL, (off_t)0); 2376 2377 real_filesz = 0; 2378 2379 for (amt_to_read = G_p->g_filesz; 2380 amt_to_read > 0; 2381 amt_to_read -= (off_t)amount_read) { 2382 FLUSH(CPIOBSZ); 2383 errno = 0; 2384 2385 if ((amount_read = read(Ifile, Buffr.b_in_p, CPIOBSZ)) < 0) { 2386 msg(EXTN, "Cannot read \"%s%s%s\"", 2387 (Gen.g_attrnam_p == (char *)NULL) ? 2388 nam_p : Gen.g_attrfnam_p, 2389 (Gen.g_attrnam_p == (char *)NULL) ? 2390 "" : gettext(" Attribute "), 2391 (Gen.g_attrnam_p == (char *)NULL) ? 2392 "" : nam_p); 2393 break; 2394 } 2395 2396 if (amount_read == 0) { 2397 /* the file has shrunk */ 2398 real_filesz = G_p->g_filesz - amt_to_read; 2399 break; 2400 } else if (amount_read > amt_to_read) { 2401 /* the file has grown */ 2402 real_filesz = G_p->g_filesz + 2403 (amount_read - amt_to_read); 2404 amount_read = amt_to_read; 2405 } else if (amount_read == amt_to_read) { 2406 /* the file is the same size */ 2407 real_filesz = G_p->g_filesz; 2408 } 2409 2410 Buffr.b_in_p += amount_read; 2411 Buffr.b_cnt += (long)amount_read; 2412 } 2413 2414 while (amt_to_read > 0) { 2415 cnt = (amt_to_read > CPIOBSZ) ? CPIOBSZ : (int)amt_to_read; 2416 FLUSH(cnt); 2417 (void) memset(Buffr.b_in_p, NULL, cnt); 2418 Buffr.b_in_p += cnt; 2419 Buffr.b_cnt += cnt; 2420 amt_to_read -= cnt; 2421 } 2422 2423 pad = (Pad_val + 1 - (G_p->g_filesz & Pad_val)) & Pad_val; 2424 if (pad != 0) { 2425 FLUSH(pad); 2426 (void) memcpy(Buffr.b_in_p, Empty, pad); 2427 Buffr.b_in_p += pad; 2428 Buffr.b_cnt += pad; 2429 } 2430 2431 if (real_filesz > G_p->g_filesz) { 2432 msg(ERR, "File size of \"%s%s%s\" has increased by %lld", 2433 (Gen.g_attrnam_p == (char *)NULL) ? 2434 G_p->g_nam_p : Gen.g_attrfnam_p, 2435 (Gen.g_attrnam_p == (char *)NULL) ? 2436 "" : gettext(" Attribute "), 2437 (Gen.g_attrnam_p == (char *)NULL) ? 2438 "" : G_p->g_nam_p, 2439 (real_filesz - G_p->g_filesz)); 2440 } 2441 if (real_filesz < G_p->g_filesz) { 2442 msg(ERR, "File size of \"%s%s%s\" has decreased by %lld", 2443 (Gen.g_attrnam_p == (char *)NULL) ? 2444 G_p->g_nam_p : Gen.g_attrfnam_p, 2445 (Gen.g_attrnam_p == (char *)NULL) ? 2446 "" : gettext(" Attribute "), 2447 (Gen.g_attrnam_p == (char *)NULL) ? 2448 "" : G_p->g_nam_p, 2449 (G_p->g_filesz - real_filesz)); 2450 } 2451 2452 (void) close(Ifile); 2453 rstfiles(U_KEEP, G_p->g_dirfd); 2454 VERBOSE((Args & (OCv | OCV)), G_p->g_nam_p); 2455 } 2456 2457 /* 2458 * data_pass: If not a special file (Aspec), open(2) the file to be 2459 * transferred, read(2) each block of data and write(2) it to the output file 2460 * Ofile, which was opened in file_pass(). 2461 */ 2462 2463 static void 2464 data_pass(void) 2465 { 2466 int cnt, done = 1; 2467 int cstatus; 2468 off_t filesz; 2469 char *namep = Nam_p; 2470 2471 if (G_p->g_attrnam_p != (char *)NULL) { 2472 namep = G_p->g_attrnam_p; 2473 } 2474 if (Aspec) { 2475 rstfiles(U_KEEP, G_p->g_passdirfd); 2476 cstatus = close(Ofile); 2477 Ofile = 0; 2478 VERBOSE((Args & (OCv | OCV)), Nam_p); 2479 if (cstatus != 0) { 2480 msg(EXTN, "close error"); 2481 } 2482 return; 2483 } 2484 if ((Ifile = openat(G_p->g_dirfd, get_component(namep), 0)) < 0) { 2485 msg(ERRN, "Cannot open \"%s%s%s\", skipped", 2486 (G_p->g_attrnam_p == (char *)NULL) ? 2487 Nam_p : G_p->g_attrfnam_p, 2488 (G_p->g_attrnam_p == (char *)NULL) ? 2489 "" : gettext(" Attribute "), 2490 (G_p->g_attrnam_p == (char *)NULL) ? 2491 "" : G_p->g_attrnam_p); 2492 rstfiles(U_KEEP, G_p->g_passdirfd); 2493 cstatus = close(Ofile); 2494 Ofile = 0; 2495 if (cstatus != 0) { 2496 msg(EXTN, "close error"); 2497 } 2498 return; 2499 } 2500 filesz = G_p->g_filesz; 2501 2502 while (filesz > 0) { 2503 cnt = (unsigned)(filesz > Bufsize) ? Bufsize : filesz; 2504 errno = 0; 2505 if (read(Ifile, Buf_p, (unsigned)cnt) < 0) { 2506 msg(ERRN, "Cannot read \"%s%s%s\"", 2507 (G_p->g_attrnam_p == (char *)NULL) ? 2508 Nam_p : G_p->g_attrfnam_p, 2509 (G_p->g_attrnam_p == (char *)NULL) ? 2510 "" : gettext(" Attribute "), 2511 (G_p->g_attrnam_p == (char *)NULL) ? 2512 "" : G_p->g_attrnam_p); 2513 done = 0; 2514 break; 2515 } 2516 errno = 0; 2517 if (write(Ofile, Buf_p, (unsigned)cnt) < 0) { 2518 if (Do_rename) { 2519 msg(ERRN, "Cannot write \"%s%s%s\"", Over_p, 2520 (G_p->g_attrnam_p == (char *)NULL) ? 2521 "" : gettext(" Attribute "), 2522 (G_p->g_attrnam_p == (char *)NULL) ? 2523 "" : Over_p); 2524 } else { 2525 msg(ERRN, "Cannot write \"%s%s%s\"", 2526 Fullnam_p, 2527 (G_p->g_attrnam_p == (char *)NULL) ? 2528 "" : gettext(" Attribute "), 2529 (G_p->g_attrnam_p == (char *)NULL) ? 2530 "" : G_p->g_attrnam_p); 2531 } 2532 2533 done = 0; 2534 break; 2535 } 2536 Blocks += (u_longlong_t)((cnt + (Bufsize - 1)) / Bufsize); 2537 filesz -= (off_t)cnt; 2538 } 2539 if (done) { 2540 rstfiles(U_OVER, G_p->g_passdirfd); 2541 } else { 2542 rstfiles(U_KEEP, G_p->g_passdirfd); 2543 } 2544 (void) close(Ifile); 2545 cstatus = close(Ofile); 2546 Ofile = 0; 2547 if (cstatus != 0) { 2548 msg(EXTN, "close error"); 2549 } 2550 VERBOSE((Args & (OCv | OCV)), Fullnam_p); 2551 Finished = 1; 2552 } 2553 2554 /* 2555 * Allocation wrappers. Used to centralize error handling for 2556 * failed allocations. 2557 */ 2558 static void * 2559 e_alloc_fail(int flag) 2560 { 2561 if (flag == E_EXIT) { 2562 msg(EXTN, "Out of memory"); 2563 } 2564 2565 return (NULL); 2566 } 2567 2568 /* 2569 * Note: unlike the other e_*lloc functions, e_realloc does not zero out the 2570 * additional memory it returns. Ensure that you do not trust its contents 2571 * when you call it. 2572 */ 2573 2574 static void * 2575 e_realloc(int flag, void *old, size_t newsize) 2576 { 2577 void *ret = realloc(old, newsize); 2578 2579 if (ret == NULL) { 2580 return (e_alloc_fail(flag)); 2581 } 2582 2583 return (ret); 2584 } 2585 2586 static char * 2587 e_strdup(int flag, const char *arg) 2588 { 2589 char *ret = strdup(arg); 2590 2591 if (ret == NULL) { 2592 return (e_alloc_fail(flag)); 2593 } 2594 2595 return (ret); 2596 } 2597 2598 static void * 2599 e_valloc(int flag, size_t size) 2600 { 2601 void *ret = valloc(size); 2602 2603 if (ret == NULL) { 2604 return (e_alloc_fail(flag)); 2605 } 2606 2607 return (ret); 2608 } 2609 2610 static void * 2611 e_zalloc(int flag, size_t size) 2612 { 2613 void *ret = malloc(size); 2614 2615 if (ret == NULL) { 2616 return (e_alloc_fail(flag)); 2617 } 2618 2619 (void) memset(ret, 0, size); 2620 return (ret); 2621 } 2622 2623 /* 2624 * file_in: Process an object from the archive. If a TARTYP (TAR or USTAR) 2625 * archive and g_nlink == 1, link this file to the file name in t_linkname 2626 * and return. Handle linked files in one of two ways. If Onecopy == 0, this 2627 * is an old style (binary or -c) archive, create and extract the data for the 2628 * first link found, link all subsequent links to this file and skip their data. 2629 * If Oncecopy == 1, save links until all have been processed, and then 2630 * process the links first to last checking their names against the patterns 2631 * and/or asking the user to rename them. The first link that is accepted 2632 * for xtraction is created and the data is read from the archive. 2633 * All subsequent links that are accepted are linked to this file. 2634 */ 2635 2636 static void 2637 file_in(void) 2638 { 2639 struct Lnk *l_p, *tl_p; 2640 int lnkem = 0, cleanup = 0; 2641 int proc_file; 2642 struct Lnk *ttl_p; 2643 int typeflag; 2644 char savacl; 2645 int cwd; 2646 2647 G_p = &Gen; 2648 2649 /* 2650 * Open target directory if this isn't a skipped file 2651 * and g_nlink == 1 2652 * 2653 * Links are handled further down in this function. 2654 */ 2655 2656 proc_file = ckname(0); 2657 2658 if (proc_file == F_SKIP && G_p->g_nlink == 1) { 2659 /* 2660 * Normally ckname() prints out the file as a side 2661 * effect except for table of contents listing 2662 * when its parameter is zero and Onecopy isn't 2663 * Zero. Due to this we need to force the name 2664 * to be printed here. 2665 */ 2666 if (Onecopy == 1) { 2667 VERBOSE((Args & OCt), G_p->g_nam_p); 2668 } 2669 data_in(P_SKIP); 2670 return; 2671 } 2672 2673 if (proc_file != F_SKIP && open_dirfd() != 0) { 2674 data_in(P_SKIP); 2675 return; 2676 } 2677 2678 if (Hdr_type == BAR) { 2679 bar_file_in(); 2680 close_dirfd(); 2681 return; 2682 } 2683 2684 /* 2685 * For archives in USTAR format, the files are extracted according 2686 * to the typeflag. 2687 */ 2688 if (Hdr_type == USTAR || Hdr_type == TAR) { 2689 typeflag = Thdr_p->tbuf.t_typeflag; 2690 if (G_p->g_nlink == 1) { /* hard link */ 2691 if (proc_file != F_SKIP) { 2692 int i; 2693 char lname[NAMSIZ+1]; 2694 (void) memset(lname, '\0', sizeof (lname)); 2695 2696 (void) strncpy(lname, Thdr_p->tbuf.t_linkname, 2697 NAMSIZ); 2698 for (i = 0; i <= NAMSIZ && lname[i] != 0; i++) 2699 ; 2700 2701 lname[i] = 0; 2702 (void) creat_lnk(G_p->g_dirfd, 2703 &lname[0], G_p->g_nam_p); 2704 } 2705 close_dirfd(); 2706 return; 2707 } 2708 if (typeflag == '3' || typeflag == '4' || typeflag == '5' || 2709 typeflag == '6') { 2710 if (proc_file != F_SKIP && 2711 creat_spec(G_p->g_dirfd) > 0) { 2712 VERBOSE((Args & (OCv | OCV)), G_p->g_nam_p); 2713 } 2714 close_dirfd(); 2715 return; 2716 } else if (Adir || Aspec) { 2717 if ((proc_file == F_SKIP) || 2718 (Ofile = openout(G_p->g_dirfd)) < 0) { 2719 data_in(P_SKIP); 2720 } else { 2721 data_in(P_PROC); 2722 } 2723 close_dirfd(); 2724 return; 2725 } 2726 } 2727 2728 if (Adir) { 2729 if (proc_file != F_SKIP && creat_spec(G_p->g_dirfd) > 0) { 2730 VERBOSE((Args & (OCv | OCV)), G_p->g_nam_p); 2731 } 2732 close_dirfd(); 2733 if (Onecopy == 1) { 2734 VERBOSE((Args & OCt), G_p->g_nam_p); 2735 } 2736 return; 2737 } 2738 if (G_p->g_nlink == 1 || (Hdr_type == TAR || 2739 Hdr_type == USTAR)) { 2740 if (Aspec) { 2741 if (proc_file != F_SKIP && creat_spec(G_p->g_dirfd) > 0) 2742 VERBOSE((Args & (OCv | OCV)), G_p->g_nam_p); 2743 } else { 2744 if ((proc_file == F_SKIP) || 2745 (Ofile = openout(G_p->g_dirfd)) < 0) { 2746 data_in(P_SKIP); 2747 } else { 2748 data_in(P_PROC); 2749 } 2750 } 2751 close_dirfd(); 2752 return; 2753 } 2754 close_dirfd(); 2755 2756 tl_p = add_lnk(&ttl_p); 2757 l_p = ttl_p; 2758 if (l_p->L_cnt == l_p->L_gen.g_nlink) 2759 cleanup = 1; 2760 if (!Onecopy || G_p->g_attrnam_p != (char *)NULL) { 2761 lnkem = (tl_p != l_p) ? 1 : 0; 2762 G_p = &tl_p->L_gen; 2763 if (proc_file == F_SKIP) { 2764 data_in(P_SKIP); 2765 } else { 2766 if (open_dirfd() != 0) 2767 return; 2768 if (!lnkem) { 2769 if (Aspec) { 2770 if (creat_spec(G_p->g_dirfd) > 0) 2771 VERBOSE((Args & (OCv | OCV)), 2772 G_p->g_nam_p); 2773 } else if ((Ofile = 2774 openout(G_p->g_dirfd)) < 0) { 2775 data_in(P_SKIP); 2776 close_dirfd(); 2777 reclaim(l_p); 2778 } else { 2779 data_in(P_PROC); 2780 close_dirfd(); 2781 } 2782 } else { 2783 /* 2784 * Are we linking an attribute? 2785 */ 2786 cwd = -1; 2787 if (l_p->L_gen.g_attrnam_p != (char *)NULL) { 2788 (void) strcpy(Lnkend_p, 2789 l_p->L_gen.g_attrnam_p); 2790 (void) strcpy(Full_p, 2791 tl_p->L_gen.g_attrnam_p); 2792 cwd = save_cwd(); 2793 (void) fchdir(G_p->g_dirfd); 2794 } else { 2795 (void) strcpy(Lnkend_p, 2796 l_p->L_gen.g_nam_p); 2797 (void) strcpy(Full_p, 2798 tl_p->L_gen.g_nam_p); 2799 } 2800 (void) creat_lnk(G_p->g_dirfd, 2801 Lnkend_p, Full_p); 2802 data_in(P_SKIP); 2803 close_dirfd(); 2804 l_p->L_lnk_p = (struct Lnk *)NULL; 2805 free(tl_p->L_gen.g_nam_p); 2806 free(tl_p); 2807 if (cwd != -1) 2808 rest_cwd(cwd); 2809 } 2810 } 2811 } else { /* Onecopy */ 2812 if (tl_p->L_gen.g_filesz) 2813 cleanup = 1; 2814 if (!cleanup) { 2815 close_dirfd(); 2816 return; /* don't do anything yet */ 2817 } 2818 tl_p = l_p; 2819 /* 2820 * ckname will clear aclchar. We need to keep aclchar for 2821 * all links. 2822 */ 2823 savacl = aclchar; 2824 while (tl_p != (struct Lnk *)NULL) { 2825 G_p = &tl_p->L_gen; 2826 aclchar = savacl; 2827 if ((proc_file = ckname(1)) != F_SKIP) { 2828 if (open_dirfd() != 0) { 2829 return; 2830 } 2831 if (l_p->L_data) { 2832 (void) creat_lnk(G_p->g_dirfd, 2833 l_p->L_gen.g_nam_p, 2834 G_p->g_nam_p); 2835 } else if (Aspec) { 2836 (void) creat_spec(G_p->g_dirfd); 2837 l_p->L_data = 1; 2838 VERBOSE((Args & (OCv | OCV)), 2839 G_p->g_nam_p); 2840 } else if ((Ofile = 2841 openout(G_p->g_dirfd)) < 0) { 2842 proc_file = F_SKIP; 2843 } else { 2844 data_in(P_PROC); 2845 l_p->L_data = 1; 2846 } 2847 } /* (proc_file = ckname(1)) != F_SKIP */ 2848 2849 tl_p = tl_p->L_lnk_p; 2850 2851 close_dirfd(); 2852 2853 if (proc_file == F_SKIP && !cleanup) { 2854 tl_p->L_nxt_p = l_p->L_nxt_p; 2855 tl_p->L_bck_p = l_p->L_bck_p; 2856 l_p->L_bck_p->L_nxt_p = tl_p; 2857 l_p->L_nxt_p->L_bck_p = tl_p; 2858 free(l_p->L_gen.g_nam_p); 2859 free(l_p); 2860 } 2861 } /* tl_p->L_lnk_p != (struct Lnk *)NULL */ 2862 if (l_p->L_data == 0) { 2863 data_in(P_SKIP); 2864 } 2865 } 2866 if (cleanup) { 2867 reclaim(l_p); 2868 } 2869 } 2870 2871 /* 2872 * file_out: If the current file is not a special file (!Aspec) and it 2873 * is identical to the archive, skip it (do not archive the archive if it 2874 * is a regular file). If creating a TARTYP (TAR or USTAR) archive, the first 2875 * time a link to a file is encountered, write the header and file out normally. 2876 * Subsequent links to this file put this file name in their t_linkname field. 2877 * Otherwise, links are handled in one of two ways, for the old headers 2878 * (i.e. binary and -c), linked files are written out as they are encountered. 2879 * For the new headers (ASC and CRC), links are saved up until all the links 2880 * to each file are found. For a file with n links, write n - 1 headers with 2881 * g_filesz set to 0, write the final (nth) header with the correct g_filesz 2882 * value and write the data for the file to the archive. 2883 */ 2884 2885 static 2886 int 2887 file_out(void) 2888 { 2889 struct Lnk *l_p, *tl_p; 2890 int cleanup = 0; 2891 struct Lnk *ttl_p; 2892 2893 G_p = &Gen; 2894 if (!Aspec && IDENT(SrcSt, ArchSt)) 2895 return (1); /* do not archive the archive if it's a reg file */ 2896 if (G_p->g_filesz > Max_offset) { 2897 msg(ERR, "cpio: %s%s%s: too large to archive in current mode", 2898 G_p->g_nam_p, 2899 (G_p->g_attrnam_p == (char *)NULL) ? 2900 "" : gettext(" Attribute "), 2901 (G_p->g_attrnam_p == (char *)NULL) ? 2902 "" : G_p->g_attrnam_p); 2903 return (1); /* do not archive if it's too big */ 2904 } 2905 if (Hdr_type == TAR || Hdr_type == USTAR) { /* TAR and USTAR */ 2906 if (Adir) { 2907 if (Gen.g_attrnam_p != (char *)NULL) { 2908 write_xattr_hdr(); 2909 } 2910 write_hdr(ARCHIVE_NORMAL, 0); 2911 return (0); 2912 } 2913 if (G_p->g_nlink == 1) { 2914 data_out(); 2915 return (0); 2916 } 2917 tl_p = add_lnk(&ttl_p); 2918 l_p = ttl_p; 2919 if (tl_p == l_p) { /* first link to this file encountered */ 2920 data_out(); 2921 return (0); 2922 } 2923 (void) strncpy(T_lname, l_p->L_gen.g_nam_p, 2924 l_p->L_gen.g_namesz); 2925 2926 /* 2927 * check if linkname is greater than 100 characters 2928 */ 2929 if (strlen(T_lname) > NAMSIZ) { 2930 msg(EPOST, "cpio: %s: linkname %s is greater than %d", 2931 G_p->g_nam_p, T_lname, NAMSIZ); 2932 return (1); 2933 } 2934 2935 write_hdr(ARCHIVE_NORMAL, (off_t)0); 2936 VERBOSE((Args & (OCv | OCV)), tl_p->L_gen.g_nam_p); 2937 2938 /* find the lnk entry in sublist, unlink it, and free it */ 2939 for (; ttl_p->L_lnk_p != NULL; 2940 ttl_p = ttl_p->L_lnk_p) { 2941 if (ttl_p->L_lnk_p == tl_p) { 2942 ttl_p->L_lnk_p = tl_p->L_lnk_p; 2943 free(tl_p->L_gen.g_nam_p); 2944 free(tl_p); 2945 break; 2946 } 2947 } 2948 2949 return (0); 2950 } 2951 if (Adir) { 2952 /* 2953 * ACL has been retrieved in getname(). 2954 */ 2955 if (Pflag) { 2956 char *secinfo = NULL; 2957 int len = 0; 2958 2959 /* append security attributes */ 2960 if ((append_secattr(&secinfo, &len, aclp)) == -1) 2961 msg(ERR, "can create security information"); 2962 2963 /* call append_secattr() if more than one */ 2964 2965 if (len > 0) { 2966 /* write ancillary */ 2967 (void) write_hdr(ARCHIVE_ACL, (off_t)len); 2968 (void) write_ancillary(secinfo, len); 2969 } 2970 } 2971 2972 if (Gen.g_attrnam_p != (char *)NULL) { 2973 write_xattr_hdr(); 2974 } 2975 write_hdr(ARCHIVE_NORMAL, (off_t)0); 2976 VERBOSE((Args & (OCv | OCV)), G_p->g_nam_p); 2977 return (0); 2978 } 2979 if (G_p->g_nlink == 1) { 2980 data_out(); 2981 return (0); 2982 } else { 2983 tl_p = add_lnk(&ttl_p); 2984 l_p = ttl_p; 2985 2986 if (l_p->L_cnt == l_p->L_gen.g_nlink) 2987 cleanup = 1; 2988 else if (Onecopy && G_p->g_attrnam_p == (char *)NULL) { 2989 return (0); /* don't process data yet */ 2990 } 2991 } 2992 if (Onecopy && G_p->g_attrnam_p == (char *)NULL) { 2993 tl_p = l_p; 2994 while (tl_p->L_lnk_p != (struct Lnk *)NULL) { 2995 G_p = &tl_p->L_gen; 2996 G_p->g_filesz = (off_t)0; 2997 /* one link with the acl is sufficient */ 2998 write_hdr(ARCHIVE_NORMAL, (off_t)0); 2999 VERBOSE((Args & (OCv | OCV)), G_p->g_nam_p); 3000 tl_p = tl_p->L_lnk_p; 3001 } 3002 G_p = &tl_p->L_gen; 3003 if (open_dirfd() != 0) 3004 return (1); 3005 } 3006 /* old style: has acl and data for every link */ 3007 data_out(); 3008 if (cleanup) 3009 reclaim(l_p); 3010 return (0); 3011 } 3012 3013 /* 3014 * file_pass: If the -l option is set (link files when possible), and the 3015 * source and destination file systems are the same, link the source file 3016 * (G_p->g_nam_p) to the destination file (Fullnam) and return. If not a 3017 * linked file, transfer the data. Otherwise, the first link to a file 3018 * encountered is transferred normally and subsequent links are linked to it. 3019 */ 3020 3021 static int 3022 file_pass(void) 3023 { 3024 struct Lnk *l_p, *tl_p; 3025 struct Lnk *ttl_p; 3026 char *save_name; 3027 int size; 3028 int cwd; 3029 char *lfrom, *lto; 3030 3031 G_p = &Gen; 3032 3033 if (Adir && !(Args & OCd)) { 3034 msg(ERR, "Use -d option to copy \"%s\"", G_p->g_nam_p); 3035 return (FILE_PASS_ERR); 3036 } 3037 3038 save_name = G_p->g_nam_p; 3039 3040 while (*(G_p->g_nam_p) == '/') { 3041 G_p->g_nam_p++; 3042 } 3043 3044 (void) strcpy(Full_p, 3045 (G_p->g_attrfnam_p == (char *)NULL) ? 3046 G_p->g_nam_p : G_p->g_attrfnam_p); 3047 3048 if (G_p->g_attrnam_p == (char *)NULL) { 3049 G_p->g_passdirfd = open_dir(Fullnam_p); 3050 3051 if (G_p->g_passdirfd == -1) { 3052 msg(ERRN, 3053 "Cannot open/create \"%s\"", Fullnam_p); 3054 return (FILE_PASS_ERR); 3055 } 3056 } else { 3057 G_p->g_passdirfd = attropen(Fullnam_p, ".", O_RDONLY); 3058 3059 if (G_p->g_passdirfd == -1) { 3060 G_p->g_passdirfd = retry_attrdir_open(Fullnam_p); 3061 3062 if (G_p->g_passdirfd == -1) { 3063 msg(ERRN, 3064 "Cannot open attribute directory of" 3065 " file \"%s\"", Fullnam_p); 3066 return (FILE_PASS_ERR); 3067 } 3068 } 3069 } 3070 3071 if (Args & OCl) { 3072 /* We are linking back to the source directory. */ 3073 3074 if (!Adir) { 3075 char *existingfile = save_name; 3076 3077 if ((Args & OCL) && issymlink) { 3078 /* We are chasing symlinks. */ 3079 3080 if ((size = readlink(save_name, Symlnk_p, 3081 MAXPATHLEN)) < 0) { 3082 msg(ERRN, 3083 "Cannot read symbolic link \"%s\"", 3084 save_name); 3085 return (FILE_PASS_ERR); 3086 } 3087 3088 Symlnk_p[size] = '\0'; 3089 existingfile = Symlnk_p; 3090 } 3091 3092 if (G_p->g_attrnam_p == (char *)NULL) { 3093 if (creat_lnk(G_p->g_passdirfd, 3094 existingfile, Fullnam_p) == 0) { 3095 return (FILE_LINKED); 3096 } 3097 } 3098 } 3099 } 3100 3101 if ((G_p->g_mode & Ftype) == S_IFLNK && !(Args & OCL)) { 3102 /* The archive file is a symlink. */ 3103 3104 errno = 0; 3105 3106 if ((size = readlink(save_name, Symlnk_p, MAXPATHLEN)) < 0) { 3107 msg(ERRN, 3108 "Cannot read symbolic link \"%s\"", save_name); 3109 return (FILE_PASS_ERR); 3110 } 3111 3112 errno = 0; 3113 (void) missdir(Fullnam_p); 3114 *(Symlnk_p + size) = '\0'; 3115 3116 if (symlink(Symlnk_p, Fullnam_p) < 0) { 3117 if (errno == EEXIST) { 3118 if (openout(G_p->g_passdirfd) < 0) { 3119 if (errno != EEXIST) { 3120 msg(ERRN, 3121 "Cannot create \"%s\"", 3122 Fullnam_p); 3123 } 3124 return (FILE_PASS_ERR); 3125 } 3126 } else { 3127 msg(ERRN, "Cannot create \"%s\"", Fullnam_p); 3128 return (FILE_PASS_ERR); 3129 } 3130 } else { 3131 if (Args & OCR) { 3132 if (lchown(Fullnam_p, (int)Rpw_p->pw_uid, 3133 (int)Rpw_p->pw_gid) < 0) { 3134 msg(ERRN, 3135 "Error during chown() of \"%s\"", 3136 Fullnam_p); 3137 } 3138 } else if ((lchown(Fullnam_p, (int)G_p->g_uid, 3139 (int)G_p->g_gid) < 0) && privileged) { 3140 msg(ERRN, 3141 "Error during chown() of \"%s\"", 3142 Fullnam_p); 3143 } 3144 } 3145 3146 VERBOSE((Args & (OCv | OCV)), Fullnam_p); 3147 return (FILE_PASS_ERR); 3148 } 3149 3150 if (!Adir && G_p->g_nlink > 1) { 3151 /* The archive file has hard links. */ 3152 3153 tl_p = add_lnk(&ttl_p); 3154 l_p = ttl_p; 3155 3156 if (tl_p == l_p) { 3157 /* The archive file was not found. */ 3158 3159 G_p = &tl_p->L_gen; 3160 } else { 3161 /* The archive file was found. */ 3162 3163 cwd = -1; 3164 3165 if (l_p->L_gen.g_attrnam_p != (char *)NULL) { 3166 /* We are linking an attribute */ 3167 3168 (void) strcpy(Lnkend_p, l_p->L_gen.g_attrnam_p); 3169 cwd = save_cwd(); 3170 (void) fchdir(G_p->g_passdirfd); 3171 lfrom = get_component(Lnknam_p); 3172 lto = tl_p->L_gen.g_attrnam_p; 3173 } else { 3174 /* We are not linking an attribute */ 3175 3176 (void) strcpy(Lnkend_p, l_p->L_gen.g_nam_p); 3177 (void) strcpy(Full_p, tl_p->L_gen.g_nam_p); 3178 lfrom = Lnknam_p; 3179 lto = Fullnam_p; 3180 } 3181 3182 (void) creat_lnk(G_p->g_passdirfd, lfrom, lto); 3183 3184 if (cwd) { 3185 rest_cwd(cwd); 3186 } 3187 3188 l_p->L_lnk_p = (struct Lnk *)NULL; 3189 free(tl_p->L_gen.g_nam_p); 3190 free(tl_p); 3191 3192 if (l_p->L_cnt == G_p->g_nlink) { 3193 reclaim(l_p); 3194 } 3195 3196 return (FILE_LINKED); 3197 } 3198 } 3199 3200 if (Adir || Aspec) { 3201 /* 3202 * The archive file is a directory, block special, char 3203 * special or a fifo. 3204 */ 3205 3206 if (creat_spec(G_p->g_passdirfd) > 0) { 3207 VERBOSE((Args & (OCv | OCV)), Fullnam_p); 3208 } 3209 } else if ((Ofile = openout(G_p->g_passdirfd)) > 0) { 3210 data_pass(); 3211 } 3212 3213 return (FILE_COPIED); 3214 } 3215 3216 /* 3217 * flush_lnks: With new linked file handling, linked files are not archived 3218 * until all links have been collected. When the end of the list of filenames 3219 * to archive has been reached, all files that did not encounter all their links 3220 * are written out with actual (encountered) link counts. A file with n links 3221 * (that are archived) will be represented by n headers (one for each link (the 3222 * first n - 1 have g_filesz set to 0)) followed by the data for the file. 3223 */ 3224 3225 static void 3226 flush_lnks(void) 3227 { 3228 struct Lnk *l_p, *tl_p; 3229 off_t tfsize; 3230 3231 l_p = Lnk_hd.L_nxt_p; 3232 while (l_p != &Lnk_hd) { 3233 (void) strcpy(Gen.g_nam_p, l_p->L_gen.g_nam_p); 3234 if (stat(Gen.g_nam_p, &SrcSt) == 0) { /* check if file exists */ 3235 tl_p = l_p; 3236 (void) creat_hdr(); 3237 Gen.g_nlink = l_p->L_cnt; /* "actual" link count */ 3238 tfsize = Gen.g_filesz; 3239 Gen.g_filesz = (off_t)0; 3240 G_p = &Gen; 3241 while (tl_p != (struct Lnk *)NULL) { 3242 Gen.g_nam_p = tl_p->L_gen.g_nam_p; 3243 Gen.g_namesz = tl_p->L_gen.g_namesz; 3244 if (tl_p->L_lnk_p == (struct Lnk *)NULL) { 3245 Gen.g_filesz = tfsize; 3246 if (open_dirfd() != 0) { 3247 break; 3248 } 3249 data_out(); 3250 break; 3251 } 3252 write_hdr(ARCHIVE_NORMAL, 3253 (off_t)0); /* header only */ 3254 VERBOSE((Args & (OCv | OCV)), Gen.g_nam_p); 3255 tl_p = tl_p->L_lnk_p; 3256 } 3257 Gen.g_nam_p = Nam_p; 3258 } else /* stat(Gen.g_nam_p, &SrcSt) == 0 */ 3259 msg(ERR, "\"%s%s%s\" has disappeared", 3260 (Gen.g_attrnam_p == (char *)NULL) ? 3261 Gen.g_nam_p : Gen.g_attrfnam_p, 3262 (Gen.g_attrnam_p == (char *)NULL) ? 3263 "" : gettext(" Attribute "), 3264 (Gen.g_attrnam_p == (char *)NULL) ? 3265 "" : Gen.g_attrnam_p); 3266 tl_p = l_p; 3267 l_p = l_p->L_nxt_p; 3268 reclaim(tl_p); 3269 } /* l_p != &Lnk_hd */ 3270 } 3271 3272 /* 3273 * gethdr: Get a header from the archive, validate it and check for the trailer. 3274 * Any user specified Hdr_type is ignored (set to NONE in main). Hdr_type is 3275 * set appropriately after a valid header is found. Unless the -k option is 3276 * set a corrupted header causes an exit with an error. I/O errors during 3277 * examination of any part of the header cause gethdr to throw away any current 3278 * data and start over. Other errors during examination of any part of the 3279 * header cause gethdr to advance one byte and continue the examination. 3280 */ 3281 3282 static int 3283 gethdr(void) 3284 { 3285 ushort_t ftype; 3286 int hit = NONE, cnt = 0; 3287 int goodhdr, hsize, offset; 3288 int bswap = 0; 3289 char *preptr; 3290 int k = 0; 3291 int j; 3292 int error; 3293 int aclcnt; 3294 3295 Gen.g_nam_p = Nam_p; 3296 do { /* hit == NONE && (Args & OCk) && Buffr.b_cnt > 0 */ 3297 FILL(Hdrsz); 3298 switch (Hdr_type) { 3299 case NONE: 3300 case BIN: 3301 Binmag.b_byte[0] = Buffr.b_out_p[0]; 3302 Binmag.b_byte[1] = Buffr.b_out_p[1]; 3303 if ((Binmag.b_half == CMN_BIN) || 3304 (Binmag.b_half == CMN_BBS)) { 3305 hit = read_hdr(BIN); 3306 if (Hdr_type == NONE) 3307 bswap = 1; 3308 hsize = HDRSZ + Gen.g_namesz; 3309 break; 3310 } 3311 if (Hdr_type != NONE) 3312 break; 3313 /*FALLTHROUGH*/ 3314 case CHR: 3315 if (!(strncmp(Buffr.b_out_p, CMS_CHR, CMS_LEN))) { 3316 hit = read_hdr(CHR); 3317 hsize = CHRSZ + Gen.g_namesz; 3318 break; 3319 } 3320 if (Hdr_type != NONE) 3321 break; 3322 /*FALLTHROUGH*/ 3323 case ASC: 3324 if (!(strncmp(Buffr.b_out_p, CMS_ASC, CMS_LEN))) { 3325 hit = read_hdr(ASC); 3326 hsize = ASCSZ + Gen.g_namesz; 3327 Max_namesz = APATH; 3328 break; 3329 } 3330 if (Hdr_type != NONE) 3331 break; 3332 /*FALLTHROUGH*/ 3333 case CRC: 3334 if (!(strncmp(Buffr.b_out_p, CMS_CRC, CMS_LEN))) { 3335 hit = read_hdr(CRC); 3336 hsize = ASCSZ + Gen.g_namesz; 3337 Max_namesz = APATH; 3338 break; 3339 } 3340 if (Hdr_type != NONE) 3341 break; 3342 /*FALLTHROUGH*/ 3343 3344 case BAR: 3345 if (Hdr_p != NULL && strcmp(Hdr_p, "bar") == 0) { 3346 Hdrsz = BARSZ; 3347 FILL(Hdrsz); 3348 if ((hit = read_hdr(BAR)) == NONE) { 3349 Hdrsz = ASCSZ; 3350 break; 3351 } 3352 hit = BAR; 3353 hsize = BARSZ; 3354 break; 3355 } 3356 /*FALLTHROUGH*/ 3357 3358 case USTAR: 3359 if (Hdr_p != NULL && strcmp(Hdr_p, "ustar") == 0) { 3360 Hdrsz = TARSZ; 3361 FILL(Hdrsz); 3362 if ((hit = read_hdr(USTAR)) == NONE) { 3363 Hdrsz = ASCSZ; 3364 break; 3365 } 3366 hit = USTAR; 3367 hsize = TARSZ; 3368 break; 3369 } 3370 /*FALLTHROUGH*/ 3371 case TAR: 3372 if (Hdr_p != NULL && strcmp(Hdr_p, "tar") == 0) { 3373 Hdrsz = TARSZ; 3374 FILL(Hdrsz); 3375 if ((hit = read_hdr(TAR)) == NONE) { 3376 Hdrsz = ASCSZ; 3377 break; 3378 } 3379 hit = TAR; 3380 hsize = TARSZ; 3381 break; 3382 } 3383 /*FALLTHROUGH*/ 3384 default: 3385 msg(EXT, "Impossible header type."); 3386 } /* Hdr_type */ 3387 3388 if (hit == TAR || hit == USTAR) { 3389 Gen.g_nam_p = &nambuf[0]; 3390 } 3391 3392 if (hit != NONE) { 3393 FILL(hsize); 3394 goodhdr = 1; 3395 if (Gen.g_filesz < (off_t)0 || Gen.g_namesz < 1) 3396 goodhdr = 0; 3397 if ((hit != USTAR) && (hit != TAR)) 3398 if (Gen.g_namesz - 1 > Max_namesz) 3399 goodhdr = 0; 3400 /* TAR and USTAR */ 3401 if ((hit == USTAR) || (hit == TAR)) { 3402 if (*Gen.g_nam_p == '\0') { /* tar trailer */ 3403 goodhdr = 1; 3404 } else { 3405 3406 G_p = &Gen; 3407 if (G_p->g_cksum != 3408 cksum(TARTYP, 0, NULL)) { 3409 goodhdr = 0; 3410 msg(ERR, 3411 "Bad header - checksum " 3412 "error."); 3413 } 3414 } 3415 } else if (hit != BAR) { /* binary, -c, ASC and CRC */ 3416 if (Gen.g_nlink <= (ulong_t)0) 3417 goodhdr = 0; 3418 if (*(Buffr.b_out_p + hsize - 1) != '\0') 3419 goodhdr = 0; 3420 } 3421 if (!goodhdr) { 3422 hit = NONE; 3423 if (!(Args & OCk)) 3424 break; 3425 msg(ERR, 3426 "Corrupt header, file(s) may be lost."); 3427 } else { 3428 FILL(hsize); 3429 } 3430 } /* hit != NONE */ 3431 if (hit == NONE) { 3432 Buffr.b_out_p++; 3433 Buffr.b_cnt--; 3434 if (!(Args & OCk)) 3435 break; 3436 if (!cnt++) 3437 msg(ERR, "Searching for magic number/header."); 3438 } 3439 } while (hit == NONE); 3440 if (hit == NONE) { 3441 if (Hdr_type == NONE) 3442 msg(EXT, "Not a cpio file, bad header."); 3443 else 3444 msg(EXT, "Bad magic number/header."); 3445 } else if (cnt > 0) { 3446 msg(EPOST, "Re-synchronized on magic number/header."); 3447 } 3448 if (Hdr_type == NONE) { 3449 Hdr_type = hit; 3450 switch (Hdr_type) { 3451 case BIN: 3452 if (bswap) 3453 Args |= BSM; 3454 Hdrsz = HDRSZ; 3455 Max_namesz = CPATH; 3456 Pad_val = HALFWD; 3457 Onecopy = 0; 3458 break; 3459 case CHR: 3460 Hdrsz = CHRSZ; 3461 Max_namesz = CPATH; 3462 Pad_val = 0; 3463 Onecopy = 0; 3464 break; 3465 case ASC: 3466 case CRC: 3467 Hdrsz = ASCSZ; 3468 Max_namesz = APATH; 3469 Pad_val = FULLWD; 3470 Onecopy = 1; 3471 break; 3472 case USTAR: 3473 Hdrsz = TARSZ; 3474 Max_namesz = HNAMLEN - 1; 3475 Pad_val = FULLBK; 3476 Onecopy = 0; 3477 break; 3478 case BAR: 3479 case TAR: 3480 Hdrsz = TARSZ; 3481 Max_namesz = TNAMLEN - 1; 3482 Pad_val = FULLBK; 3483 Onecopy = 0; 3484 break; 3485 default: 3486 msg(EXT, "Impossible header type."); 3487 } /* Hdr_type */ 3488 } /* Hdr_type == NONE */ 3489 if ((Hdr_type == USTAR) || (Hdr_type == TAR) || 3490 (Hdr_type == BAR)) { /* TAR, USTAR, BAR */ 3491 Gen.g_namesz = 0; 3492 if (Gen.g_nam_p[0] == '\0') 3493 return (0); 3494 else { 3495 preptr = &prebuf[0]; 3496 if (*preptr != (char)NULL) { 3497 k = strlen(&prebuf[0]); 3498 if (k < PRESIZ) { 3499 (void) strcpy(&fullnam[0], &prebuf[0]); 3500 j = 0; 3501 fullnam[k++] = '/'; 3502 while ((j < NAMSIZ) && (&nambuf[j] != 3503 (char)NULL)) { 3504 fullnam[k] = nambuf[j]; 3505 k++; j++; 3506 } 3507 fullnam[k] = '\0'; 3508 } else if (k >= PRESIZ) { 3509 k = 0; 3510 while ((k < PRESIZ) && (prebuf[k] != 3511 '\0')) { 3512 fullnam[k] = prebuf[k]; 3513 k++; 3514 } 3515 fullnam[k++] = '/'; 3516 j = 0; 3517 while ((j < NAMSIZ) && (nambuf[j] != 3518 '\0')) { 3519 fullnam[k] = nambuf[j]; 3520 k++; j++; 3521 } 3522 fullnam[k] = '\0'; 3523 } 3524 Gen.g_nam_p = &fullnam[0]; 3525 } else 3526 Gen.g_nam_p = &nambuf[0]; 3527 3528 /* 3529 * initialize the buffer so that the prefix will not 3530 * applied to the next entry in the archive 3531 */ 3532 (void) memset(prebuf, 0, sizeof (prebuf)); 3533 } 3534 } else if (Hdr_type != BAR) { 3535 (void) memcpy(Gen.g_nam_p, Buffr.b_out_p + Hdrsz, Gen.g_namesz); 3536 if (!(strcmp(Gen.g_nam_p, "TRAILER!!!"))) 3537 return (0); 3538 } 3539 offset = ((hsize + Pad_val) & ~Pad_val); 3540 FILL(offset + Hdrsz); 3541 Thdr_p = (union tblock *)Buffr.b_out_p; 3542 Buffr.b_out_p += offset; 3543 Buffr.b_cnt -= (off_t)offset; 3544 ftype = Gen.g_mode & Ftype; 3545 3546 #if defined(O_XATTR) 3547 /* extended attribute support */ 3548 if (((Gen.g_mode & S_IFMT) == _XATTR_CPIO_MODE) || 3549 ((Hdr_type == USTAR || Hdr_type == TAR) && 3550 Thdr_p->tbuf.t_typeflag == _XATTR_HDRTYPE)) { 3551 if (xattrp != (struct xattr_buf *)NULL) { 3552 if (xattrbadhead) { 3553 free(xattrhead); 3554 xattrp = NULL; 3555 xattr_linkp = NULL; 3556 xattrhead = NULL; 3557 return (1); 3558 } 3559 if (Atflag == 0 && ((Args & OCt) == 0)) { 3560 data_in(P_SKIP); 3561 free(xattrhead); 3562 xattrhead = NULL; 3563 xattrp = NULL; 3564 Gen.g_attrfnam_p = (char *)NULL; 3565 Gen.g_attrnam_p = (char *)NULL; 3566 return (2); 3567 } 3568 3569 if (Gen.g_attrfnam_p != (char *)NULL) { 3570 free(Gen.g_attrfnam_p); 3571 Gen.g_attrfnam_p = (char *)NULL; 3572 } 3573 if (Gen.g_attrnam_p != (char *)NULL) { 3574 free(Gen.g_attrnam_p); 3575 Gen.g_attrnam_p = (char *)NULL; 3576 } 3577 if (Renam_p && Renam_p[0] != '\0') { 3578 Gen.g_attrfnam_p = e_strdup(E_EXIT, Renam_p); 3579 } else { 3580 Gen.g_attrfnam_p = e_strdup(E_EXIT, 3581 xattrp->h_names); 3582 } 3583 3584 Gen.g_attrnam_p = e_strdup(E_EXIT, 3585 xattrp->h_names + strlen(xattrp->h_names) + 1); 3586 3587 if (Hdr_type != USTAR && Hdr_type != TAR) { 3588 Gen.g_mode = Gen.g_mode & (~_XATTR_CPIO_MODE); 3589 Gen.g_mode |= attrmode(xattrp->h_typeflag); 3590 } else if (Hdr_type == USTAR || Hdr_type == TAR) { 3591 Thdr_p->tbuf.t_typeflag = xattrp->h_typeflag; 3592 } 3593 if (xattr_linkp != (struct xattr_buf *)NULL) { 3594 if (Gen.g_linktoattrfnam_p != (char *)NULL) { 3595 free(Gen.g_linktoattrfnam_p); 3596 Gen.g_linktoattrfnam_p = NULL; 3597 } 3598 if (Gen.g_linktoattrnam_p != (char *)NULL) { 3599 free(Gen.g_linktoattrnam_p); 3600 Gen.g_linktoattrnam_p = NULL; 3601 } 3602 Gen.g_linktoattrfnam_p = e_strdup(E_EXIT, 3603 xattr_linkp->h_names); 3604 Gen.g_linktoattrnam_p = e_strdup(E_EXIT, 3605 xattr_linkp->h_names + 3606 strlen(xattr_linkp->h_names) + 1); 3607 xattr_linkp = NULL; 3608 } 3609 ftype = Gen.g_mode & Ftype; 3610 Adir = ftype == S_IFDIR; 3611 Aspec = (ftype == S_IFBLK || ftype == S_IFCHR || 3612 ftype == S_IFIFO || ftype == S_IFSOCK); 3613 3614 if (Gen.g_attrnam_p[0] == '.' && 3615 Gen.g_attrnam_p[1] == '\0' && 3616 xattrp->h_typeflag == DIRTYPE) { 3617 Hiddendir = 1; 3618 } else { 3619 Hiddendir = 0; 3620 } 3621 3622 free(xattrhead); 3623 xattrhead = NULL; 3624 xattrp = NULL; 3625 } else { 3626 if (xattrbadhead == 0) { 3627 (void) read_xattr_hdr(); 3628 return (2); 3629 } 3630 } 3631 } 3632 #endif /* O_XATTR */ 3633 3634 /* acl support: grab acl info */ 3635 if ((Gen.g_mode == SECMODE) || ((Hdr_type == USTAR || 3636 Hdr_type == TAR) && Thdr_p->tbuf.t_typeflag == 'A')) { 3637 /* this is an ancillary file */ 3638 off_t bytes; 3639 char *secp; 3640 int pad; 3641 int cnt; 3642 char *tp; 3643 int attrsize; 3644 3645 if (Pflag) { 3646 bytes = Gen.g_filesz; 3647 secp = e_zalloc(E_EXIT, (uint_t)bytes); 3648 tp = secp; 3649 3650 while (bytes > 0) { 3651 cnt = (int)(bytes > CPIOBSZ) ? CPIOBSZ : bytes; 3652 FILL(cnt); 3653 (void) memcpy(tp, Buffr.b_out_p, cnt); 3654 tp += cnt; 3655 Buffr.b_out_p += cnt; 3656 Buffr.b_cnt -= (off_t)cnt; 3657 bytes -= (off_t)cnt; 3658 } 3659 3660 pad = (Pad_val + 1 - (Gen.g_filesz & Pad_val)) & 3661 Pad_val; 3662 if (pad != 0) { 3663 FILL(pad); 3664 Buffr.b_out_p += pad; 3665 Buffr.b_cnt -= (off_t)pad; 3666 } 3667 3668 /* got all attributes in secp */ 3669 tp = secp; 3670 do { 3671 attr = (struct sec_attr *)tp; 3672 switch (attr->attr_type) { 3673 case UFSD_ACL: 3674 case ACE_ACL: 3675 (void) sscanf(attr->attr_len, "%7lo", 3676 (ulong_t *)&aclcnt); 3677 /* header is 8 */ 3678 attrsize = 8 + 3679 strlen(&attr->attr_info[0]) 3680 + 1; 3681 3682 error = 3683 acl_fromtext(&attr->attr_info[0], 3684 &aclp); 3685 3686 if (error != 0) { 3687 msg(ERR, 3688 "aclfromtext failed: %s", 3689 acl_strerror(error)); 3690 bytes -= attrsize; 3691 break; 3692 } 3693 3694 if (aclcnt != acl_cnt(aclp)) { 3695 msg(ERR, "acl count error"); 3696 bytes -= attrsize; 3697 break; 3698 } 3699 bytes -= attrsize; 3700 break; 3701 3702 /* SunFed case goes here */ 3703 3704 default: 3705 msg(EXT, "unrecognized attr type"); 3706 break; 3707 } 3708 /* next attributes */ 3709 tp += attrsize; 3710 } while (bytes > 0); 3711 free(secp); 3712 } else { 3713 /* skip security info */ 3714 G_p = &Gen; 3715 data_in(P_SKIP); 3716 } 3717 /* 3718 * We already got the file content, dont call file_in() 3719 * when return. The new return code(2) is used to 3720 * indicate that. 3721 */ 3722 VERBOSE((Args & OCt), Gen.g_nam_p); 3723 return (2); 3724 } /* acl */ 3725 3726 Adir = (ftype == S_IFDIR); 3727 Aspec = (ftype == S_IFBLK || ftype == S_IFCHR || ftype == S_IFIFO || 3728 ftype == S_IFSOCK); 3729 3730 /* 3731 * Skip any trailing slashes 3732 */ 3733 chop_endslashes(Gen.g_nam_p); 3734 return (1); 3735 } 3736 3737 /* 3738 * getname: Get file names for inclusion in the archive. When end of file 3739 * on the input stream of file names is reached, flush the link buffer out. 3740 * For each filename, remove leading "./"s and multiple "/"s, and remove 3741 * any trailing newline "\n". Finally, verify the existance of the file, 3742 * and call creat_hdr() to fill in the gen_hdr structure. 3743 */ 3744 3745 static int 3746 getname(void) 3747 { 3748 int goodfile = 0, lastchar, err; 3749 char *s; 3750 char *dir; 3751 3752 Gen.g_nam_p = Nam_p; 3753 3754 while (!goodfile) { 3755 err = 0; 3756 3757 while ((s = fgets(Gen.g_nam_p, APATH+1, In_p)) 3758 != NULL) { 3759 lastchar = strlen(s) - 1; 3760 issymlink = 0; 3761 3762 if (s[lastchar] != '\n') { 3763 if (lastchar == APATH - 1) { 3764 if (!err) { 3765 msg(ERR, 3766 "%s name too long.", 3767 Nam_p); 3768 } 3769 goodfile = 0; 3770 err = 1; 3771 } else { 3772 break; 3773 } 3774 } else { 3775 s[lastchar] = '\0'; 3776 break; 3777 } 3778 } 3779 3780 if (s == (char *)NULL) { 3781 if (Gen.g_dirfd != -1) { 3782 (void) close(Gen.g_dirfd); 3783 Gen.g_dirfd = -1; 3784 } 3785 if (Onecopy && (Args & OCo)) { 3786 flush_lnks(); 3787 } 3788 return (0); 3789 } 3790 3791 while (*Gen.g_nam_p == '.' && Gen.g_nam_p[1] == '/') { 3792 Gen.g_nam_p += 2; 3793 while (*Gen.g_nam_p == '/') 3794 Gen.g_nam_p++; 3795 } 3796 3797 /* 3798 * Skip any trailing slashes 3799 */ 3800 chop_endslashes(Gen.g_nam_p); 3801 3802 /* 3803 * Figure out parent directory 3804 */ 3805 3806 if (Gen.g_attrnam_p != (char *)NULL) { 3807 if (Gen.g_dirfd != -1) { 3808 (void) close(Gen.g_dirfd); 3809 } 3810 Gen.g_dirfd = attropen(Gen.g_attrfnam_p, ".", O_RDONLY); 3811 if (Gen.g_dirfd == -1) { 3812 msg(ERRN, 3813 "Cannot open attribute directory" 3814 " of file %s", Gen.g_attrfnam_p); 3815 continue; 3816 } 3817 } else { 3818 #ifdef O_XATTR 3819 char dirpath[PATH_MAX]; 3820 3821 get_parent(Gen.g_nam_p, dirpath); 3822 if (Atflag) { 3823 dir = dirpath; 3824 if (Gen.g_dirfd != -1) { 3825 (void) close(Gen.g_dirfd); 3826 } 3827 Gen.g_dirfd = open(dir, O_RDONLY); 3828 if (Gen.g_dirfd == -1) { 3829 msg(ERRN, 3830 "Cannot open directory %s", dir); 3831 continue; 3832 } 3833 } else { 3834 /* 3835 * g_dirpath is the pathname cache maintaining 3836 * the dirname which is currently opened. 3837 * We first check the g_dirpath to see if the 3838 * given dirname matches. If so, we don't need 3839 * to open the dir, but we can use the g_dirfd 3840 * as is if it is still available. 3841 */ 3842 dir = NULL; 3843 if (Gen.g_dirpath == NULL || 3844 Gen.g_dirfd == -1) { 3845 /* 3846 * It's the first time or it has 3847 * all gone. 3848 */ 3849 dir = e_strdup(E_EXIT, dirpath); 3850 } else { 3851 if (strcmp(Gen.g_dirpath, 3852 dirpath) != 0) { 3853 /* different directory */ 3854 dir = e_strdup(E_EXIT, dirpath); 3855 } 3856 } 3857 if (dir != NULL) { 3858 /* 3859 * We need to open the new directory. 3860 * discard the pathname and dirfd 3861 * for the previous directory. 3862 */ 3863 if (Gen.g_dirpath != NULL) { 3864 free(Gen.g_dirpath); 3865 Gen.g_dirpath = NULL; 3866 } 3867 if (Gen.g_dirfd != -1) { 3868 (void) close(Gen.g_dirfd); 3869 } 3870 /* open the new dir */ 3871 Gen.g_dirfd = open(dir, O_RDONLY); 3872 if (Gen.g_dirfd == -1) { 3873 msg(ERRN, "Cannot open " 3874 "directory %s", dir); 3875 continue; 3876 } 3877 Gen.g_dirpath = dir; 3878 } 3879 } 3880 #else 3881 Gen.g_dirfd = -1; 3882 #endif 3883 } 3884 3885 /* creat_hdr checks for USTAR filename length */ 3886 3887 if (Hdr_type != USTAR && strlen(Gen.g_nam_p) > 3888 Max_namesz) { 3889 if (!err) { 3890 msg(ERR, "%s%s%s name too long.", 3891 (Gen.g_attrnam_p == (char *)NULL) ? 3892 Nam_p : Gen.g_attrfnam_p, 3893 (Gen.g_attrnam_p == (char *)NULL) ? 3894 "" : gettext(" Attribute "), 3895 (Gen.g_attrnam_p == (char *)NULL) ? 3896 "" : Gen.g_attrnam_p); 3897 } 3898 goodfile = 0; 3899 err = 1; 3900 } 3901 3902 if (err) { 3903 continue; 3904 } else { 3905 G_p = &Gen; 3906 if (!LSTAT(Gen.g_dirfd, Gen.g_nam_p, &SrcSt)) { 3907 goodfile = 1; 3908 3909 if ((SrcSt.st_mode & Ftype) == S_IFLNK) { 3910 issymlink = 1; 3911 3912 if ((Args & OCL)) { 3913 errno = 0; 3914 if (STAT(Gen.g_dirfd, 3915 G_p->g_nam_p, 3916 &SrcSt) < 0) { 3917 msg(ERRN, 3918 "Cannot follow" 3919 " \"%s%s%s\"", 3920 (Gen.g_attrnam_p == 3921 (char *)NULL) ? 3922 Gen.g_nam_p : 3923 Gen.g_attrfnam_p, 3924 (Gen.g_attrnam_p == 3925 (char *)NULL) ? 3926 "" : 3927 gettext( 3928 " Attribute "), 3929 (Gen.g_attrnam_p == 3930 (char *)NULL) ? 3931 "" : 3932 Gen.g_attrnam_p); 3933 goodfile = 0; 3934 } 3935 } 3936 } 3937 3938 if (Use_old_stat) { 3939 OldSt = convert_to_old_stat(&SrcSt, 3940 Gen.g_nam_p, Gen.g_attrnam_p); 3941 3942 if (OldSt == NULL) { 3943 goodfile = 0; 3944 } 3945 } 3946 } else { 3947 msg(ERRN, 3948 "Error with fstatat() of \"%s%s%s\"", 3949 (Gen.g_attrnam_p == (char *)NULL) ? 3950 Gen.g_nam_p : Gen.g_attrfnam_p, 3951 (Gen.g_attrnam_p == (char *)NULL) ? 3952 "" : gettext(" Attribute "), 3953 (Gen.g_attrnam_p == (char *)NULL) ? 3954 "" : Gen.g_attrnam_p); 3955 } 3956 } 3957 } 3958 3959 /* 3960 * Get ACL info: dont bother allocating space if there are only 3961 * standard permissions, i.e. ACL count < 4 3962 */ 3963 if ((SrcSt.st_mode & Ftype) != S_IFLNK && Pflag) { 3964 if (acl_get(Gen.g_nam_p, ACL_NO_TRIVIAL, &aclp) != 0) 3965 msg(ERRN, "Error with acl() of \"%s\"", Gen.g_nam_p); 3966 } 3967 /* else: only traditional permissions, so proceed as usual */ 3968 if (creat_hdr()) 3969 return (1); 3970 else return (2); 3971 } 3972 3973 /* 3974 * getpats: Save any filenames/patterns specified as arguments. 3975 * Read additional filenames/patterns from the file specified by the 3976 * user. The filenames/patterns must occur one per line. 3977 */ 3978 3979 static void 3980 getpats(int largc, char **largv) 3981 { 3982 char **t_pp; 3983 size_t len; 3984 unsigned numpat = largc, maxpat = largc + 2; 3985 3986 Pat_pp = e_zalloc(E_EXIT, maxpat * sizeof (char *)); 3987 t_pp = Pat_pp; 3988 while (*largv) { 3989 *t_pp = e_zalloc(E_EXIT, strlen(*largv) + 1); 3990 (void) strcpy(*t_pp, *largv); 3991 t_pp++; 3992 largv++; 3993 } 3994 while (fgets(Nam_p, Max_namesz + 1, Ef_p) != (char *)NULL) { 3995 if (numpat == maxpat - 1) { 3996 maxpat += 10; 3997 Pat_pp = e_realloc(E_EXIT, Pat_pp, 3998 maxpat * sizeof (char *)); 3999 t_pp = Pat_pp + numpat; 4000 } 4001 len = strlen(Nam_p); /* includes the \n */ 4002 *(Nam_p + len - 1) = '\0'; /* remove the \n */ 4003 *t_pp = e_zalloc(E_EXIT, len); 4004 (void) strcpy(*t_pp, Nam_p); 4005 t_pp++; 4006 numpat++; 4007 } 4008 *t_pp = (char *)NULL; 4009 } 4010 4011 static void 4012 ioerror(int dir) 4013 { 4014 int t_errno; 4015 4016 t_errno = errno; 4017 errno = 0; 4018 if (fstat(Archive, &ArchSt) < 0) 4019 msg(EXTN, "Error during stat() of archive"); 4020 errno = t_errno; 4021 if ((ArchSt.st_mode & Ftype) != S_IFCHR) { 4022 if (dir) { 4023 if (errno == EFBIG) 4024 msg(EXT, "ulimit reached for output file."); 4025 else if (errno == ENOSPC) 4026 msg(EXT, "No space left for output file."); 4027 else 4028 msg(EXTN, "I/O error - cannot continue"); 4029 } else 4030 msg(EXT, "Unexpected end-of-file encountered."); 4031 } else 4032 msg(EXTN, "\007I/O error on \"%s\"", dir ? "output" : "input"); 4033 } 4034 4035 /* 4036 * matched: Determine if a filename matches the specified pattern(s). If the 4037 * pattern is matched (the second return), return 0 if -f was specified, else 4038 * return != 0. If the pattern is not matched (the first and third 4039 * returns), return 0 if -f was not specified, else return != 0. 4040 */ 4041 4042 static int 4043 matched(void) 4044 { 4045 char *str_p = G_p->g_nam_p; 4046 char **pat_pp = Pat_pp; 4047 int negatep, result; 4048 4049 /* 4050 * Check for attribute 4051 */ 4052 if (G_p->g_attrfnam_p != (char *)NULL) 4053 str_p = G_p->g_attrfnam_p; 4054 4055 for (pat_pp = Pat_pp; *pat_pp; pat_pp++) { 4056 negatep = (**pat_pp == '!'); 4057 4058 result = fnmatch(negatep ? (*pat_pp+1) : *pat_pp, str_p, 0); 4059 4060 if (result != 0 && result != FNM_NOMATCH) { 4061 msg(POST, "error matching file %s with pattern" 4062 " %s\n", str_p, *pat_pp); 4063 return (Args & OCf); 4064 } 4065 4066 if ((result == 0 && ! negatep) || 4067 (result == FNM_NOMATCH && negatep)) { 4068 /* match occured */ 4069 return (!(Args & OCf)); 4070 } 4071 } 4072 return (Args & OCf); /* not matched */ 4073 } 4074 4075 /* 4076 * missdir: Create missing directories for files. 4077 * (Possible future performance enhancement, if missdir is called, we know 4078 * that at least the very last directory of the path does not exist, therefore, 4079 * scan the path from the end 4080 */ 4081 4082 static int 4083 missdir(char *nam_p) 4084 { 4085 char *c_p; 4086 int cnt = 2; 4087 char *lastp; 4088 4089 if (*(c_p = nam_p) == '/') /* skip over 'root slash' */ 4090 c_p++; 4091 4092 lastp = c_p + strlen(nam_p) - 1; 4093 if (*lastp == '/') 4094 *lastp = '\0'; 4095 4096 for (; *c_p; ++c_p) { 4097 if (*c_p == '/') { 4098 *c_p = '\0'; 4099 if (stat(nam_p, &DesSt) < 0) { 4100 if (Args & OCd) { 4101 cnt = mkdir(nam_p, Def_mode); 4102 if (cnt != 0) { 4103 *c_p = '/'; 4104 return (cnt); 4105 } 4106 } else { 4107 msg(ERR, "Missing -d option."); 4108 *c_p = '/'; 4109 return (-1); 4110 } 4111 } 4112 *c_p = '/'; 4113 } 4114 } 4115 if (cnt == 2) /* the file already exists */ 4116 cnt = 0; 4117 return (cnt); 4118 } 4119 4120 /* 4121 * mklong: Convert two shorts into one long. For VAX, Interdata ... 4122 */ 4123 4124 static long 4125 mklong(short v[]) 4126 { 4127 4128 union swpbuf swp_b; 4129 4130 swp_b.s_word = 1; 4131 if (swp_b.s_byte[0]) { 4132 swp_b.s_half[0] = v[1]; 4133 swp_b.s_half[1] = v[0]; 4134 } else { 4135 swp_b.s_half[0] = v[0]; 4136 swp_b.s_half[1] = v[1]; 4137 } 4138 return (swp_b.s_word); 4139 } 4140 4141 /* 4142 * mkshort: Convert a long into 2 shorts, for VAX, Interdata ... 4143 */ 4144 4145 static void 4146 mkshort(short sval[], long v) 4147 { 4148 union swpbuf *swp_p, swp_b; 4149 4150 /* LINTED alignment */ 4151 swp_p = (union swpbuf *)sval; 4152 swp_b.s_word = 1; 4153 if (swp_b.s_byte[0]) { 4154 swp_b.s_word = v; 4155 swp_p->s_half[0] = swp_b.s_half[1]; 4156 swp_p->s_half[1] = swp_b.s_half[0]; 4157 } else { 4158 swp_b.s_word = v; 4159 swp_p->s_half[0] = swp_b.s_half[0]; 4160 swp_p->s_half[1] = swp_b.s_half[1]; 4161 } 4162 } 4163 4164 /* 4165 * msg: Print either a message (no error) (POST), an error message with or 4166 * without the errno (ERRN or ERR), or print an error message with or without 4167 * the errno and exit (EXTN or EXT). 4168 */ 4169 4170 static void 4171 msg(int severity, const char *fmt, ...) 4172 { 4173 FILE *file_p; 4174 va_list ap; 4175 4176 if ((Args & OCV) && Verbcnt) { /* clear current line of dots */ 4177 (void) fputc('\n', Out_p); 4178 Verbcnt = 0; 4179 } 4180 va_start(ap, fmt); 4181 if (severity == POST) 4182 file_p = Out_p; 4183 else 4184 if (severity == EPOST) 4185 file_p = Err_p; 4186 else { 4187 file_p = Err_p; 4188 Error_cnt++; 4189 } 4190 (void) fflush(Out_p); 4191 (void) fflush(Err_p); 4192 if ((severity != POST) && (severity != EPOST)) 4193 (void) fprintf(file_p, "cpio: "); 4194 4195 /* gettext replaces version of string */ 4196 4197 (void) vfprintf(file_p, gettext(fmt), ap); 4198 if (severity == ERRN || severity == EXTN) { 4199 (void) fprintf(file_p, ", errno %d, ", errno); 4200 perror(""); 4201 } else 4202 (void) fprintf(file_p, "\n"); 4203 (void) fflush(file_p); 4204 va_end(ap); 4205 if (severity == EXT || severity == EXTN) { 4206 (void) fprintf(file_p, gettext("%d errors\n"), Error_cnt); 4207 exit(EXIT_CODE); 4208 } 4209 } 4210 4211 /* 4212 * openout: Open files for output and set all necessary information. 4213 * If the u option is set (unconditionally overwrite existing files), 4214 * and the current file exists, get a temporary file name from mktemp(3C), 4215 * link the temporary file to the existing file, and remove the existing file. 4216 * Finally either creat(2), mkdir(2) or mknod(2) as appropriate. 4217 * 4218 */ 4219 4220 static int 4221 openout(int dirfd) 4222 { 4223 char *nam_p; 4224 int cnt, result; 4225 4226 Do_rename = 0; /* creat_tmp() may reset this */ 4227 4228 if (G_p->g_attrnam_p != (char *)NULL) { 4229 nam_p = G_p->g_attrnam_p; 4230 } else { 4231 if (Args & OCp) { 4232 nam_p = Fullnam_p; 4233 } else { 4234 nam_p = G_p->g_nam_p; 4235 } 4236 } 4237 4238 4239 if ((Max_filesz != RLIM_INFINITY) && 4240 (Max_filesz < (G_p->g_filesz >> 9))) { 4241 /* ... divided by 512 ... */ 4242 msg(ERR, "Skipping \"%s%s%s\": exceeds ulimit by %lld bytes", 4243 (G_p->g_attrnam_p == (char *)NULL) ? 4244 nam_p : G_p->g_attrfnam_p, 4245 (G_p->g_attrnam_p == (char *)NULL) ? 4246 "" : gettext(" Attribute "), 4247 (G_p->g_attrnam_p == (char *)NULL) ? 4248 "" : nam_p, 4249 (off_t)(G_p->g_filesz - (Max_filesz << 9))); 4250 return (-1); 4251 } 4252 4253 if (LSTAT(dirfd, nam_p, &DesSt) == 0) { 4254 /* 4255 * A file by the same name exists. Move it to a temporary 4256 * file. 4257 */ 4258 4259 if (creat_tmp(nam_p) < 0) { 4260 /* 4261 * We weren't able to create the temp file. Report 4262 * failure. 4263 */ 4264 4265 return (-1); 4266 } 4267 } 4268 4269 if (Do_rename) { 4270 /* nam_p was changed by creat_tmp() above. */ 4271 4272 if (Args & OCp) { 4273 if (G_p->g_attrnam_p != (char *)NULL) { 4274 nam_p = Attrfile_p; 4275 } else { 4276 nam_p = Fullnam_p; 4277 } 4278 } else { 4279 nam_p = G_p->g_nam_p; 4280 } 4281 } 4282 4283 /* 4284 * This pile tries to create the file directly, and, if there is a 4285 * problem, creates missing directories, and then tries to create the 4286 * file again. Two strikes and you're out. 4287 * 4288 * On XATTR system, the directory has already been created by 4289 * open_dirfd(), so error shouldn't happen in the loop. However, 4290 * on non-XATTR system, symlink/open may fail with ENOENT. In such 4291 * case, we go to create missing directories. 4292 */ 4293 4294 cnt = 0; 4295 4296 do { 4297 errno = 0; 4298 4299 if (Hdr_type == TAR && Thdr_p->tbuf.t_typeflag == SYMTYPE) { 4300 /* The archive file is a TAR symlink. */ 4301 if ((result = 4302 symlink(Thdr_p->tbuf.t_linkname, nam_p)) >= 0) { 4303 cnt = 0; 4304 if (Over_p != NULL) { 4305 (void) unlinkat(dirfd, 4306 get_component(Over_p), 0); 4307 *Over_p = '\0'; 4308 } 4309 break; 4310 } else if (errno != ENOENT) { 4311 /* The attempt to symlink failed. */ 4312 msg(ERRN, 4313 "Cannot create symbolic link \"%s\" -> " 4314 "\"%s\"", 4315 Thdr_p->tbuf.t_linkname, nam_p); 4316 4317 if (*Over_p != '\0') { 4318 rstfiles(U_KEEP, dirfd); 4319 } 4320 return (-1); 4321 } 4322 } else if (Hdr_type == BAR && bar_linkflag == SYMTYPE) { 4323 if ((result = symlink(bar_linkname, nam_p)) >= 0) { 4324 cnt = 0; 4325 if (Over_p != NULL) { 4326 (void) unlinkat(dirfd, 4327 get_component(Over_p), 0); 4328 *Over_p = '\0'; 4329 } 4330 break; 4331 } else if (errno != ENOENT) { 4332 /* The attempt to symlink failed. */ 4333 msg(ERRN, 4334 "Cannot create symbolic link \"%s\" -> " 4335 "\"%s\"", 4336 bar_linkname, nam_p); 4337 if (*Over_p != '\0') { 4338 rstfiles(U_KEEP, dirfd); 4339 } 4340 return (-1); 4341 } 4342 } else if ((G_p->g_mode & Ftype) == S_IFLNK) { 4343 if ((!(Args & OCp)) && !(Hdr_type == USTAR)) { 4344 (void) strncpy(Symlnk_p, 4345 Buffr.b_out_p, G_p->g_filesz); 4346 *(Symlnk_p + G_p->g_filesz) = '\0'; 4347 } else if ((!(Args & OCp)) && (Hdr_type == USTAR)) { 4348 Symlnk_p[NAMSIZ] = '\0'; 4349 (void) strncpy(Symlnk_p, 4350 &Thdr_p->tbuf.t_linkname[0], NAMSIZ); 4351 } 4352 if ((result = symlink(Symlnk_p, nam_p)) >= 0) { 4353 cnt = 0; 4354 if (Over_p != NULL) { 4355 (void) unlinkat(dirfd, 4356 get_component(Over_p), 0); 4357 *Over_p = '\0'; 4358 } 4359 break; 4360 } else if (errno != ENOENT) { 4361 /* The attempt to symlink failed. */ 4362 msg(ERRN, 4363 "Cannot create symbolic link \"%s\" -> " 4364 "\"%s\"", 4365 Symlnk_p, nam_p); 4366 4367 if (*Over_p != '\0') { 4368 rstfiles(U_KEEP, dirfd); 4369 } 4370 return (-1); 4371 } 4372 } else { 4373 if ((result = openat(dirfd, get_component(nam_p), 4374 O_CREAT|O_RDWR|O_TRUNC, (int)G_p->g_mode)) >= 0) { 4375 /* acl support */ 4376 acl_is_set = 0; 4377 if (Pflag && aclp != NULL) { 4378 if (facl_set(result, aclp) < 0) { 4379 msg(ERRN, 4380 "\"%s\": failed to set acl", 4381 nam_p); 4382 } else { 4383 acl_is_set = 1; 4384 } 4385 acl_free(aclp); 4386 aclp = NULL; 4387 } 4388 cnt = 0; 4389 break; 4390 } else if (errno != ENOENT) { 4391 /* The attempt to open failed. */ 4392 msg(ERRN, "Cannot open file \"%s\"", nam_p); 4393 if (*Over_p != '\0') { 4394 rstfiles(U_KEEP, dirfd); 4395 } 4396 return (-1); 4397 } 4398 } 4399 cnt++; 4400 } while (cnt < 2 && missdir(nam_p) == 0); 4401 4402 switch (cnt) { 4403 case 0: 4404 if ((Args & OCi) && (Hdr_type == USTAR)) { 4405 setpasswd(nam_p); 4406 } 4407 if ((G_p->g_mode & Ftype) == S_IFLNK || 4408 (Hdr_type == BAR && bar_linkflag == SYMTYPE)) { 4409 if (Args & OCR) { 4410 if (fchownat(dirfd, 4411 get_component(nam_p), 4412 (int)Rpw_p->pw_uid, 4413 (int)Rpw_p->pw_gid, 4414 AT_SYMLINK_NOFOLLOW) < 0) { 4415 msg(ERRN, 4416 "Error during chown() of " 4417 "\"%s%s%s\"", 4418 (G_p->g_attrnam_p == 4419 (char *)NULL) ? 4420 nam_p : G_p->g_attrfnam_p, 4421 (G_p->g_attrnam_p == 4422 (char *)NULL) ? 4423 "" : gettext(" Attribute "), 4424 (G_p->g_attrnam_p == 4425 (char *)NULL) ? 4426 "" : nam_p); 4427 } 4428 } else if ((fchownat(dirfd, get_component(nam_p), 4429 (int)G_p->g_uid, (int)G_p->g_gid, 4430 AT_SYMLINK_NOFOLLOW) < 0) && privileged) { 4431 msg(ERRN, 4432 "Error during chown() of \"%s%s%s\"", 4433 (G_p->g_attrnam_p == (char *)NULL) ? 4434 nam_p : G_p->g_attrfnam_p, 4435 (G_p->g_attrnam_p == (char *)NULL) ? 4436 "" : gettext(" Attribute "), 4437 (G_p->g_attrnam_p == (char *)NULL) ? 4438 "" : nam_p); 4439 } 4440 } 4441 break; 4442 4443 case 1: 4444 if (Do_rename) { 4445 msg(ERRN, "Cannot create directory for \"%s%s%s\"", 4446 (G_p->g_attrnam_p == (char *)NULL) ? Over_p : 4447 G_p->g_attrfnam_p, 4448 (G_p->g_attrnam_p == (char *)NULL) ? "" : 4449 gettext(" Attribute "), 4450 (G_p->g_attrnam_p == (char *)NULL) ? "" : Over_p); 4451 } else { 4452 msg(ERRN, "Cannot create directory for \"%s%s%s\"", 4453 (G_p->g_attrnam_p == (char *)NULL) ? nam_p : 4454 G_p->g_attrfnam_p, 4455 (G_p->g_attrnam_p == (char *)NULL) ? "" : 4456 gettext(" Attribute "), 4457 (G_p->g_attrnam_p == (char *)NULL) ? "" : nam_p); 4458 } 4459 break; 4460 4461 case 2: 4462 if (Do_rename) { 4463 msg(ERRN, "Cannot create \"%s%s%s\"", 4464 (G_p->g_attrnam_p == (char *)NULL) ? Over_p : 4465 G_p->g_attrfnam_p, 4466 (G_p->g_attrnam_p == (char *)NULL) ? "" : 4467 gettext(" Attribute "), 4468 (G_p->g_attrnam_p == (char *)NULL) ? "" : 4469 Over_p); 4470 } else { 4471 msg(ERRN, "Cannot create \"%s%s%s\"", 4472 (G_p->g_attrnam_p == (char *)NULL) ? nam_p : 4473 G_p->g_attrfnam_p, 4474 (G_p->g_attrnam_p == (char *)NULL) ? "" : 4475 gettext(" Attribute "), 4476 (G_p->g_attrnam_p == (char *)NULL) ? "" : 4477 nam_p); 4478 } 4479 break; 4480 4481 default: 4482 msg(EXT, "Impossible case."); 4483 } 4484 4485 Finished = 0; 4486 return (result); 4487 } 4488 4489 /* 4490 * read_hdr: Transfer headers from the selected format 4491 * in the archive I/O buffer to the generic structure. 4492 */ 4493 4494 static 4495 int 4496 read_hdr(int hdr) 4497 { 4498 int rv = NONE; 4499 major_t maj, rmaj; 4500 minor_t min, rmin; 4501 char tmpnull; 4502 static int bar_read_cnt = 0; 4503 4504 if (hdr != BAR) { 4505 if (Buffr.b_end_p != (Buffr.b_out_p + Hdrsz)) { 4506 tmpnull = *(Buffr.b_out_p + Hdrsz); 4507 *(Buffr.b_out_p + Hdrsz) = '\0'; 4508 } 4509 } 4510 4511 switch (hdr) { 4512 case BIN: 4513 (void) memcpy(&Hdr, Buffr.b_out_p, HDRSZ); 4514 if (Hdr.h_magic == (short)CMN_BBS) { 4515 swap((char *)&Hdr, HDRSZ); 4516 } 4517 Gen.g_magic = Hdr.h_magic; 4518 Gen.g_mode = Hdr.h_mode; 4519 Gen.g_uid = Hdr.h_uid; 4520 Gen.g_gid = Hdr.h_gid; 4521 Gen.g_nlink = Hdr.h_nlink; 4522 Gen.g_mtime = mklong(Hdr.h_mtime); 4523 Gen.g_ino = Hdr.h_ino; 4524 Gen.g_dev = Hdr.h_dev; 4525 Gen.g_rdev = Hdr.h_rdev; 4526 Gen.g_cksum = 0L; 4527 Gen.g_filesz = (off_t)mklong(Hdr.h_filesize); 4528 Gen.g_namesz = Hdr.h_namesize; 4529 rv = BIN; 4530 break; 4531 case CHR: 4532 if (sscanf(Buffr.b_out_p, 4533 "%6lo%6lo%6lo%6lo%6lo%6lo%6lo%6lo%11lo%6o%11llo", 4534 &Gen.g_magic, &Gen.g_dev, &Gen.g_ino, &Gen.g_mode, 4535 &Gen.g_uid, &Gen.g_gid, &Gen.g_nlink, &Gen.g_rdev, 4536 (ulong_t *)&Gen.g_mtime, (uint_t *)&Gen.g_namesz, 4537 (u_off_t *)&Gen.g_filesz) == CHR_CNT) { 4538 rv = CHR; 4539 #define cpioMAJOR(x) (int)(((unsigned)x >> 8) & 0x7F) 4540 #define cpioMINOR(x) (int)(x & 0xFF) 4541 maj = cpioMAJOR(Gen.g_dev); 4542 rmaj = cpioMAJOR(Gen.g_rdev); 4543 min = cpioMINOR(Gen.g_dev); 4544 rmin = cpioMINOR(Gen.g_rdev); 4545 if (Use_old_stat) { 4546 /* needs error checking */ 4547 Gen.g_dev = (maj << 8) | min; 4548 Gen.g_rdev = (rmaj << 8) | rmin; 4549 } else { 4550 Gen.g_dev = makedev(maj, min); 4551 Gen.g_rdev = makedev(rmaj, rmin); 4552 } 4553 } 4554 break; 4555 case ASC: 4556 case CRC: 4557 if (sscanf(Buffr.b_out_p, 4558 "%6lx%8lx%8lx%8lx%8lx%8lx%8lx%8llx%8x%8x%8x%8x%8x%8lx", 4559 &Gen.g_magic, &Gen.g_ino, &Gen.g_mode, &Gen.g_uid, 4560 &Gen.g_gid, &Gen.g_nlink, &Gen.g_mtime, 4561 (u_off_t *)&Gen.g_filesz, (uint_t *)&maj, (uint_t *)&min, 4562 (uint_t *)&rmaj, (uint_t *)&rmin, (uint_t *)&Gen.g_namesz, 4563 &Gen.g_cksum) == ASC_CNT) { 4564 Gen.g_dev = makedev(maj, min); 4565 Gen.g_rdev = makedev(rmaj, rmin); 4566 rv = hdr; 4567 } 4568 break; 4569 case USTAR: /* TAR and USTAR */ 4570 if (*Buffr.b_out_p == '\0') { 4571 *Gen.g_nam_p = '\0'; 4572 nambuf[0] = '\0'; 4573 } else { 4574 Thdr_p = (union tblock *)Buffr.b_out_p; 4575 Gen.g_nam_p[0] = '\0'; 4576 (void) strncpy((char *)&nambuf, 4577 Thdr_p->tbuf.t_name, NAMSIZ); 4578 (void) sscanf(Thdr_p->tbuf.t_mode, "%8lo", 4579 &Gen.g_mode); 4580 (void) sscanf(Thdr_p->tbuf.t_uid, "%8lo", &Gen.g_uid); 4581 (void) sscanf(Thdr_p->tbuf.t_gid, "%8lo", &Gen.g_gid); 4582 (void) sscanf(Thdr_p->tbuf.t_size, "%11llo", 4583 (u_off_t *)&Gen.g_filesz); 4584 (void) sscanf(Thdr_p->tbuf.t_mtime, "%12lo", 4585 (ulong_t *)&Gen.g_mtime); 4586 (void) sscanf(Thdr_p->tbuf.t_cksum, "%8lo", 4587 (ulong_t *)&Gen.g_cksum); 4588 if (Thdr_p->tbuf.t_linkname[0] != (char)NULL) 4589 Gen.g_nlink = 1; 4590 else 4591 Gen.g_nlink = 0; 4592 4593 switch (Thdr_p->tbuf.t_typeflag) { 4594 case SYMTYPE: 4595 /* Symbolic Link */ 4596 Gen.g_nlink = 2; 4597 break; 4598 case CHRTYPE: 4599 Gen.g_mode |= (S_IFMT & S_IFCHR); 4600 break; 4601 case BLKTYPE: 4602 Gen.g_mode |= (S_IFMT & S_IFBLK); 4603 break; 4604 case DIRTYPE: 4605 Gen.g_mode |= (S_IFMT & S_IFDIR); 4606 break; 4607 case FIFOTYPE: 4608 Gen.g_mode |= (S_IFMT & S_IFIFO); 4609 break; 4610 } 4611 4612 (void) sscanf(Thdr_p->tbuf.t_magic, "%8lo", 4613 /* LINTED alignment */ 4614 (ulong_t *)&Gen.g_tmagic); 4615 (void) sscanf(Thdr_p->tbuf.t_version, "%8lo", 4616 /* LINTED alignment */ 4617 (ulong_t *)&Gen.g_version); 4618 (void) sscanf(Thdr_p->tbuf.t_uname, "%32s", 4619 (char *)&Gen.g_uname); 4620 (void) sscanf(Thdr_p->tbuf.t_gname, "%32s", 4621 (char *)&Gen.g_gname); 4622 (void) sscanf(Thdr_p->tbuf.t_devmajor, "%8lo", 4623 &Gen.g_dev); 4624 (void) sscanf(Thdr_p->tbuf.t_devminor, "%8lo", 4625 &Gen.g_rdev); 4626 (void) strncpy((char *)&prebuf, 4627 Thdr_p->tbuf.t_prefix, PRESIZ); 4628 Gen.g_namesz = strlen(Gen.g_nam_p) + 1; 4629 Gen.g_dev = makedev(maj, min); 4630 } 4631 rv = USTAR; 4632 break; 4633 case TAR: 4634 if (*Buffr.b_out_p == '\0') { 4635 *Gen.g_nam_p = '\0'; 4636 nambuf[0] = '\0'; 4637 } else { 4638 Thdr_p = (union tblock *)Buffr.b_out_p; 4639 Gen.g_nam_p[0] = '\0'; 4640 (void) sscanf(Thdr_p->tbuf.t_mode, "%lo", &Gen.g_mode); 4641 (void) sscanf(Thdr_p->tbuf.t_uid, "%lo", &Gen.g_uid); 4642 (void) sscanf(Thdr_p->tbuf.t_gid, "%lo", &Gen.g_gid); 4643 (void) sscanf(Thdr_p->tbuf.t_size, "%llo", 4644 (u_off_t *)&Gen.g_filesz); 4645 (void) sscanf(Thdr_p->tbuf.t_mtime, "%lo", 4646 &Gen.g_mtime); 4647 (void) sscanf(Thdr_p->tbuf.t_cksum, "%lo", 4648 &Gen.g_cksum); 4649 if (Thdr_p->tbuf.t_typeflag == '1') /* hardlink */ 4650 Gen.g_nlink = 1; 4651 else 4652 Gen.g_nlink = 0; 4653 (void) strncpy(Gen.g_nam_p, 4654 Thdr_p->tbuf.t_name, NAMSIZ); 4655 Gen.g_namesz = strlen(Gen.g_nam_p) + 1; 4656 (void) strcpy(nambuf, Gen.g_nam_p); 4657 } 4658 rv = TAR; 4659 break; 4660 case BAR: 4661 if (Bar_vol_num == 0 && bar_read_cnt == 0) { 4662 read_bar_vol_hdr(); 4663 bar_read_cnt++; 4664 } 4665 else 4666 read_bar_file_hdr(); 4667 rv = BAR; 4668 break; 4669 default: 4670 msg(EXT, "Impossible header type."); 4671 } 4672 4673 if (hdr != BAR) { 4674 if (Buffr.b_end_p != (Buffr.b_out_p + Hdrsz)) 4675 *(Buffr.b_out_p + Hdrsz) = tmpnull; 4676 } 4677 4678 return (rv); 4679 } 4680 4681 /* 4682 * reclaim: Reclaim linked file structure storage. 4683 */ 4684 4685 static void 4686 reclaim(struct Lnk *p) 4687 { 4688 p->L_bck_p->L_nxt_p = p->L_nxt_p; 4689 p->L_nxt_p->L_bck_p = p->L_bck_p; 4690 4691 while (p != NULL) { 4692 struct Lnk *new_p = p->L_lnk_p; 4693 4694 free(p->L_gen.g_nam_p); 4695 free(p); 4696 p = new_p; 4697 } 4698 } 4699 4700 /* 4701 * rstbuf: Reset the I/O buffer, move incomplete potential headers to 4702 * the front of the buffer and force bread() to refill the buffer. The 4703 * return value from bread() is returned (to identify I/O errors). On the 4704 * 3B2, reads must begin on a word boundary, therefore, with the -i option, 4705 * any remaining bytes in the buffer must be moved to the base of the buffer 4706 * in such a way that the destination locations of subsequent reads are 4707 * word aligned. 4708 */ 4709 4710 static void 4711 rstbuf(void) 4712 { 4713 int pad; 4714 4715 if ((Args & OCi) || Append) { 4716 if (Buffr.b_out_p != Buffr.b_base_p) { 4717 pad = ((Buffr.b_cnt + FULLWD) & ~FULLWD); 4718 Buffr.b_in_p = Buffr.b_base_p + pad; 4719 pad -= Buffr.b_cnt; 4720 (void) memcpy(Buffr.b_base_p + pad, Buffr.b_out_p, 4721 (int)Buffr.b_cnt); 4722 Buffr.b_out_p = Buffr.b_base_p + pad; 4723 } 4724 if (bfill() < 0) 4725 msg(EXT, "Unexpected end-of-archive encountered."); 4726 } else { /* OCo */ 4727 (void) memcpy(Buffr.b_base_p, Buffr.b_out_p, (int)Buffr.b_cnt); 4728 Buffr.b_out_p = Buffr.b_base_p; 4729 Buffr.b_in_p = Buffr.b_base_p + Buffr.b_cnt; 4730 } 4731 } 4732 4733 static void 4734 setpasswd(char *nam) 4735 { 4736 if ((dpasswd = getpwnam(&Gen.g_uname[0])) == (struct passwd *)NULL) { 4737 msg(EPOST, "cpio: problem reading passwd entry"); 4738 msg(EPOST, "cpio: %s: owner not changed", nam); 4739 if (Gen.g_uid == UID_NOBODY && S_ISREG(Gen.g_mode)) 4740 Gen.g_mode &= ~S_ISUID; 4741 } else 4742 Gen.g_uid = dpasswd->pw_uid; 4743 4744 if ((dgroup = getgrnam(&Gen.g_gname[0])) == (struct group *)NULL) { 4745 msg(EPOST, "cpio: problem reading group entry"); 4746 msg(EPOST, "cpio: %s: group not changed", nam); 4747 if (Gen.g_gid == GID_NOBODY && S_ISREG(Gen.g_mode)) 4748 Gen.g_mode &= ~S_ISGID; 4749 } else 4750 Gen.g_gid = dgroup->gr_gid; 4751 G_p = &Gen; 4752 } 4753 4754 /* 4755 * rstfiles: Perform final changes to the file. If the -u option is set, 4756 * and overwrite == U_OVER, remove the temporary file, else if overwrite 4757 * == U_KEEP, unlink the current file, and restore the existing version 4758 * of the file. In addition, where appropriate, set the access or modification 4759 * times, change the owner and change the modes of the file. 4760 * 4761 * Note that if Do_rename is set, then the roles of original and temporary 4762 * file are reversed. If all went well, we will rename() the temporary file 4763 * over the original in order to accomodate potentially executing files. 4764 */ 4765 static void 4766 rstfiles(int over, int dirfd) 4767 { 4768 char *inam_p, *onam_p, *nam_p; 4769 int error; 4770 4771 if (Args & OCp) { 4772 if (G_p->g_attrnam_p == (char *)NULL) { 4773 nam_p = Fullnam_p; 4774 } else { 4775 nam_p = G_p->g_attrnam_p; 4776 } 4777 } else { 4778 if (Gen.g_nlink > (ulong_t)0) { 4779 nam_p = G_p->g_nam_p; 4780 } else { 4781 nam_p = Gen.g_nam_p; 4782 } 4783 } 4784 if (Gen.g_attrnam_p != (char *)NULL) { 4785 nam_p = Gen.g_attrnam_p; 4786 } 4787 4788 if ((Args & OCi) && (Hdr_type == USTAR)) { 4789 setpasswd(nam_p); 4790 } 4791 if (over == U_KEEP && *Over_p != '\0') { 4792 if (Do_rename) { 4793 msg(POST, "Restoring existing \"%s%s%s\"", 4794 (G_p->g_attrnam_p == (char *)NULL) ? 4795 Over_p : Fullnam_p, 4796 (G_p->g_attrnam_p == (char *)NULL) ? 4797 "" : gettext(" Attribute "), 4798 (G_p->g_attrnam_p == (char *)NULL) ? 4799 "" : Over_p); 4800 } else { 4801 msg(POST, "Restoring existing \"%s%s%s\"", 4802 (G_p->g_attrnam_p == (char *)NULL) ? 4803 nam_p : Fullnam_p, 4804 (G_p->g_attrnam_p == (char *)NULL) ? 4805 "" : gettext(" Attribute "), 4806 (G_p->g_attrnam_p == (char *)NULL) ? 4807 "" : nam_p); 4808 } 4809 4810 /* delete what we just built */ 4811 (void) unlinkat(dirfd, get_component(nam_p), 0); 4812 4813 /* If the old file needs restoring, do the necessary links */ 4814 if (Do_rename) { 4815 char *tmp_ptr; 4816 4817 if (Args & OCp) { 4818 tmp_ptr = Fullnam_p; 4819 Fullnam_p = Over_p; 4820 } else { 4821 tmp_ptr = G_p->g_nam_p; 4822 G_p->g_nam_p = Over_p; 4823 } 4824 Over_p = tmp_ptr; 4825 4826 Do_rename = 0; /* names now have original values */ 4827 } else { 4828 if (rename(Over_p, nam_p) < 0) { 4829 if (link(Over_p, nam_p) < 0) { 4830 msg(EXTN, 4831 "Cannot recover original version" 4832 " of \"%s%s%s\"", 4833 (G_p->g_attrnam_p == (char *)NULL) ? 4834 nam_p : Fullnam_p, 4835 (G_p->g_attrnam_p == (char *)NULL) ? 4836 "" : gettext(" Attribute "), 4837 (G_p->g_attrnam_p == (char *)NULL) ? 4838 "" : nam_p); 4839 } 4840 if (unlinkat(dirfd, get_component(Over_p), 0)) { 4841 msg(ERRN, 4842 "Cannot remove temp file " 4843 "\"%s%s%s\"", 4844 (G_p->g_attrnam_p == (char *)NULL) ? 4845 Over_p : Fullnam_p, 4846 (G_p->g_attrnam_p == (char *)NULL) ? 4847 "" : gettext(" Attribute "), 4848 (G_p->g_attrnam_p == (char *)NULL) ? 4849 "" : Over_p); 4850 } 4851 } 4852 } 4853 *Over_p = '\0'; 4854 return; 4855 } else if (over == U_OVER && *Over_p != '\0') { 4856 if (Do_rename) { 4857 char *tmp_ptr; 4858 4859 (void) renameat(dirfd, get_component(nam_p), 4860 dirfd, get_component(Over_p)); 4861 if (Args & OCp) { 4862 if (G_p->g_attrnam_p == (char *)NULL) { 4863 tmp_ptr = Fullnam_p; 4864 Fullnam_p = Over_p; 4865 Over_p = tmp_ptr; 4866 } else { 4867 /* 4868 * Over_p is pointing at g_attrnam_p 4869 * which must be preserved. 4870 * 4871 * We don't want the tmp_ptr and so 4872 * on to throw away our only copy of 4873 * the name. 4874 */ 4875 Over_p = Attrfile_p; 4876 } 4877 } else { 4878 tmp_ptr = G_p->g_nam_p; 4879 G_p->g_nam_p = Over_p; 4880 Over_p = tmp_ptr; 4881 } 4882 Do_rename = 0; /* names now have original values */ 4883 } else { 4884 if (unlinkat(dirfd, get_component(Over_p), 0) < 0) { 4885 msg(ERRN, 4886 "Cannot unlink() temp file \"%s%s%s\"", 4887 (G_p->g_attrnam_p == (char *)NULL) ? 4888 Over_p : Fullnam_p, 4889 (G_p->g_attrnam_p == (char *)NULL) ? 4890 "" : gettext(" Attribute "), 4891 (G_p->g_attrnam_p == (char *)NULL) ? 4892 "" : Over_p); 4893 } 4894 } 4895 *Over_p = '\0'; 4896 } 4897 if (Args & OCp) { 4898 if (G_p->g_attrnam_p != (char *)NULL) { 4899 inam_p = G_p->g_attrfnam_p; 4900 onam_p = G_p->g_attrnam_p; 4901 } else { 4902 inam_p = Nam_p; 4903 onam_p = Fullnam_p; 4904 } 4905 } else /* OCi only uses onam_p, OCo only uses inam_p */ 4906 if (G_p->g_attrnam_p != (char *)NULL) { 4907 inam_p = onam_p = G_p->g_attrnam_p; 4908 } else { 4909 inam_p = onam_p = G_p->g_nam_p; 4910 } 4911 4912 /* 4913 * Change the owner, time, and mode to those of the file 4914 * originally created in the archive. Note: time and 4915 * mode do not need to be restored for a symbolic link 4916 * since rstfiles() is not called when the archived file 4917 * is a symlink. 4918 */ 4919 if (!(Args & OCo)) { 4920 if (Args & OCR) { 4921 if (fchownat(dirfd, get_component(onam_p), 4922 Rpw_p->pw_uid, Rpw_p->pw_gid, 4923 AT_SYMLINK_NOFOLLOW) < 0) { 4924 msg(ERRN, "Cannot chown() \"%s%s%s\"", 4925 onam_p, 4926 (G_p->g_attrnam_p == (char *)NULL) ? 4927 "" : gettext(" Attribute "), 4928 (G_p->g_attrnam_p == (char *)NULL) ? 4929 "" : onam_p); 4930 } 4931 } else { 4932 if ((fchownat(dirfd, get_component(onam_p), 4933 G_p->g_uid, G_p->g_gid, 4934 AT_SYMLINK_NOFOLLOW) < 0) && privileged) { 4935 msg(ERRN, "Cannot chown() \"%s%s%s\"", 4936 onam_p, 4937 (G_p->g_attrnam_p == (char *)NULL) ? 4938 "" : gettext(" Attribute "), 4939 (G_p->g_attrnam_p == (char *)NULL) ? 4940 "" : onam_p); 4941 } 4942 } 4943 4944 if (Args & OCm) { 4945 set_tym(dirfd, get_component(onam_p), 4946 G_p->g_mtime, G_p->g_mtime); 4947 } 4948 4949 /* Acl was not set, so we must chmod */ 4950 if (!acl_is_set) { 4951 mode_t orig_mask, new_mask; 4952 4953 /* 4954 * use fchmod for attributes, since 4955 * we known they are always regular 4956 * files, whereas when it isn't an 4957 * attribute it could be for a fifo 4958 * or something other that we don't 4959 * open and don't have a valid Ofile 4960 * for. 4961 */ 4962 if (privileged) { 4963 new_mask = G_p->g_mode; 4964 } else { 4965 orig_mask = umask(0); 4966 new_mask = G_p->g_mode & ~orig_mask; 4967 } 4968 4969 if (G_p->g_attrnam_p != (char *)NULL) { 4970 error = fchmod(Ofile, new_mask); 4971 } else { 4972 error = chmod(onam_p, new_mask); 4973 } 4974 if (error < 0) { 4975 msg(ERRN, 4976 "Cannot chmod() \"%s%s%s\"", 4977 (G_p->g_attrnam_p == (char *)NULL) ? 4978 onam_p : G_p->g_attrfnam_p, 4979 (G_p->g_attrnam_p == (char *)NULL) ? 4980 "" : gettext(" Attribute "), 4981 (G_p->g_attrnam_p == (char *)NULL) ? 4982 "" : onam_p); 4983 } 4984 if (!privileged) { 4985 (void) umask(orig_mask); 4986 } 4987 } 4988 } 4989 4990 if (!(Args & OCi) && (Args & OCa)) { 4991 /* 4992 * Use dirfd since we are updating original file 4993 * and not just created file 4994 */ 4995 set_tym(G_p->g_dirfd, get_component(inam_p), 4996 (ulong_t)SrcSt.st_atime, (ulong_t)SrcSt.st_mtime); 4997 } 4998 } 4999 5000 /* 5001 * scan4trail: Scan the archive looking for the trailer. 5002 * When found, back the archive up over the trailer and overwrite 5003 * the trailer with the files to be added to the archive. 5004 */ 5005 5006 static void 5007 scan4trail(void) 5008 { 5009 int rv; 5010 off_t off1, off2; 5011 5012 Append = 1; 5013 Hdr_type = NONE; 5014 G_p = (struct gen_hdr *)NULL; 5015 while (gethdr()) { 5016 G_p = &Gen; 5017 data_in(P_SKIP); 5018 } 5019 off1 = Buffr.b_cnt; 5020 off2 = Bufsize - (Buffr.b_cnt % Bufsize); 5021 Buffr.b_out_p = Buffr.b_in_p = Buffr.b_base_p; 5022 Buffr.b_cnt = (off_t)0; 5023 if (lseek(Archive, -(off1 + off2), SEEK_REL) < 0) 5024 msg(EXTN, "Unable to append to this archive"); 5025 if ((rv = g_read(Device, Archive, Buffr.b_in_p, Bufsize)) < 0) 5026 msg(EXTN, "Cannot append to this archive"); 5027 if (lseek(Archive, (off_t)-rv, SEEK_REL) < 0) 5028 msg(EXTN, "Unable to append to this archive"); 5029 Buffr.b_cnt = off2; 5030 Buffr.b_in_p = Buffr.b_base_p + Buffr.b_cnt; 5031 Append = 0; 5032 } 5033 5034 /* 5035 * setup: Perform setup and initialization functions. Parse the options 5036 * using getopt(3C), call ckopts to check the options and initialize various 5037 * structures and pointers. Specifically, for the -i option, save any 5038 * patterns, for the -o option, check (via stat(2)) the archive, and for 5039 * the -p option, validate the destination directory. 5040 */ 5041 5042 static void 5043 setup(int largc, char **largv) 5044 { 5045 extern int optind; 5046 extern char *optarg; 5047 5048 #if defined(O_XATTR) 5049 #ifdef WAITAROUND 5050 char *opts_p = "zabcdfiklmoprstuvABC:DE:H:I:LM:O:PR:SV6@"; 5051 #else 5052 char *opts_p = "abcdfiklmoprstuvABC:DE:H:I:LM:O:PR:SV6@"; 5053 #endif 5054 #else 5055 #ifdef WAITAROUND 5056 char *opts_p = "zabcdfiklmoprstuvABC:DE:H:I:LM:O:PR:SV6"; 5057 #else 5058 char *opts_p = "abcdfiklmoprstuvABC:DE:H:I:LM:O:PR:SV6"; 5059 #endif 5060 #endif 5061 5062 char *dupl_p = "Only one occurrence of -%c allowed"; 5063 int option; 5064 int blk_cnt, blk_cnt_max; 5065 struct rlimit rlim; 5066 5067 /* Remember the native page size. */ 5068 5069 PageSize = sysconf(_SC_PAGESIZE); 5070 5071 if (PageSize == -1) { 5072 /* 5073 * This sysconf call will almost certainly never fail. The 5074 * symbol PAGESIZE itself resolves to the above sysconf call, 5075 * so we should go ahead and define our own constant. 5076 */ 5077 PageSize = 8192; 5078 } 5079 5080 Hdr_type = BIN; 5081 Max_offset = (off_t)(BIN_OFFSET_MAX); 5082 Efil_p = Hdr_p = Own_p = IOfil_p = NULL; 5083 while ((option = getopt(largc, largv, opts_p)) != EOF) { 5084 switch (option) { 5085 #ifdef WAITAROUND 5086 case 'z': 5087 /* rendezvous with the debugger */ 5088 waitaround = 1; 5089 break; 5090 #endif 5091 case 'a': /* reset access time */ 5092 Args |= OCa; 5093 break; 5094 case 'b': /* swap bytes and halfwords */ 5095 Args |= OCb; 5096 break; 5097 case 'c': /* select character header */ 5098 Args |= OCc; 5099 Hdr_type = ASC; 5100 Max_namesz = APATH; 5101 Onecopy = 1; 5102 break; 5103 case 'd': /* create directories as needed */ 5104 Args |= OCd; 5105 break; 5106 case 'f': /* select files not in patterns */ 5107 Args |= OCf; 5108 break; 5109 case 'i': /* "copy in" */ 5110 Args |= OCi; 5111 Archive = 0; 5112 break; 5113 case 'k': /* retry after I/O errors */ 5114 Args |= OCk; 5115 break; 5116 case 'l': /* link files when possible */ 5117 Args |= OCl; 5118 break; 5119 case 'm': /* retain modification time */ 5120 Args |= OCm; 5121 break; 5122 case 'o': /* "copy out" */ 5123 Args |= OCo; 5124 Archive = 1; 5125 break; 5126 case 'p': /* "pass" */ 5127 Max_namesz = APATH; 5128 Args |= OCp; 5129 break; 5130 case 'r': /* rename files interactively */ 5131 Args |= OCr; 5132 break; 5133 case 's': /* swap bytes */ 5134 Args |= OCs; 5135 break; 5136 case 't': /* table of contents */ 5137 Args |= OCt; 5138 break; 5139 case 'u': /* copy unconditionally */ 5140 Args |= OCu; 5141 break; 5142 case 'v': /* verbose - print file names */ 5143 Args |= OCv; 5144 break; 5145 case 'A': /* append to existing archive */ 5146 Args |= OCA; 5147 break; 5148 case 'B': /* set block size to 5120 bytes */ 5149 Args |= OCB; 5150 Bufsize = 5120; 5151 break; 5152 case 'C': /* set arbitrary block size */ 5153 if (Args & OCC) 5154 msg(ERR, dupl_p, 'C'); 5155 else { 5156 Args |= OCC; 5157 Bufsize = atoi(optarg); 5158 } 5159 break; 5160 case 'D': 5161 Dflag = 1; 5162 break; 5163 case 'E': /* alternate file for pattern input */ 5164 if (Args & OCE) 5165 msg(ERR, dupl_p, 'E'); 5166 else { 5167 Args |= OCE; 5168 Efil_p = optarg; 5169 } 5170 break; 5171 case 'H': /* select header type */ 5172 if (Args & OCH) 5173 msg(ERR, dupl_p, 'H'); 5174 else { 5175 Args |= OCH; 5176 Hdr_p = optarg; 5177 } 5178 break; 5179 case 'I': /* alternate file for archive input */ 5180 if (Args & OCI) 5181 msg(ERR, dupl_p, 'I'); 5182 else { 5183 Args |= OCI; 5184 IOfil_p = optarg; 5185 } 5186 break; 5187 case 'L': /* follow symbolic links */ 5188 Args |= OCL; 5189 break; 5190 case 'M': /* specify new end-of-media message */ 5191 if (Args & OCM) 5192 msg(ERR, dupl_p, 'M'); 5193 else { 5194 Args |= OCM; 5195 Eom_p = optarg; 5196 } 5197 break; 5198 case 'O': /* alternate file for archive output */ 5199 if (Args & OCO) 5200 msg(ERR, dupl_p, 'O'); 5201 else { 5202 Args |= OCO; 5203 IOfil_p = optarg; 5204 } 5205 break; 5206 case 'P': /* preserve acls */ 5207 Args |= OCP; 5208 Pflag++; 5209 break; 5210 case 'R': /* change owner/group of files */ 5211 if (Args & OCR) 5212 msg(ERR, dupl_p, 'R'); 5213 else { 5214 Args |= OCR; 5215 Own_p = optarg; 5216 } 5217 break; 5218 case 'S': /* swap halfwords */ 5219 Args |= OCS; 5220 break; 5221 case 'V': /* print a dot '.' for each file */ 5222 Args |= OCV; 5223 break; 5224 case '6': /* for old, sixth-edition files */ 5225 Args |= OC6; 5226 Ftype = SIXTH; 5227 break; 5228 #if defined(O_XATTR) 5229 case '@': 5230 Atflag++; 5231 break; 5232 #endif 5233 default: 5234 Error_cnt++; 5235 } /* option */ 5236 } /* (option = getopt(largc, largv, opts_p)) != EOF */ 5237 5238 #ifdef WAITAROUND 5239 if (waitaround) { 5240 (void) fprintf(stderr, gettext("Rendezvous with cpio on pid" 5241 " %d\n"), getpid()); 5242 5243 while (waitaround) { 5244 (void) sleep(10); 5245 } 5246 } 5247 #endif 5248 5249 largc -= optind; 5250 largv += optind; 5251 ckopts(Args); 5252 if (!Error_cnt) { 5253 Empty = e_valloc(E_EXIT, TARSZ); 5254 if (Args & OCr) { 5255 Renam_p = e_zalloc(E_EXIT, APATH + 1); 5256 Renametmp_p = e_zalloc(E_EXIT, APATH + 1); 5257 } 5258 Symlnk_p = e_zalloc(E_EXIT, APATH); 5259 Over_p = e_zalloc(E_EXIT, APATH); 5260 Nam_p = e_zalloc(E_EXIT, APATH + 1); 5261 if (Args & OCp) { 5262 Savenam_p = e_zalloc(E_EXIT, APATH + 1); 5263 } 5264 Fullnam_p = e_zalloc(E_EXIT, APATH); 5265 Lnknam_p = e_zalloc(E_EXIT, APATH); 5266 Gen.g_nam_p = Nam_p; 5267 if ((Fullnam_p = getcwd((char *)NULL, APATH)) == (char *)NULL) 5268 msg(EXT, "Unable to determine current directory."); 5269 if (Args & OCi) { 5270 if (largc > 0) /* save patterns for -i option, if any */ 5271 Pat_pp = largv; 5272 if (Args & OCE) 5273 getpats(largc, largv); 5274 } else if (Args & OCo) { 5275 if (largc != 0) /* error if arguments left with -o */ 5276 Error_cnt++; 5277 else if (fstat(Archive, &ArchSt) < 0) 5278 msg(ERRN, "Error during stat() of archive"); 5279 switch (Hdr_type) { 5280 case BIN: 5281 Hdrsz = HDRSZ; 5282 Pad_val = HALFWD; 5283 break; 5284 case CHR: 5285 Hdrsz = CHRSZ; 5286 Pad_val = 0; 5287 Max_offset = (off_t)(CHAR_OFFSET_MAX); 5288 break; 5289 case ASC: 5290 case CRC: 5291 Hdrsz = ASCSZ; 5292 Pad_val = FULLWD; 5293 Max_offset = (off_t)(ASC_OFFSET_MAX); 5294 break; 5295 case TAR: 5296 /* FALLTHROUGH */ 5297 case USTAR: /* TAR and USTAR */ 5298 Hdrsz = TARSZ; 5299 Pad_val = FULLBK; 5300 Max_offset = (off_t)(CHAR_OFFSET_MAX); 5301 break; 5302 default: 5303 msg(EXT, "Impossible header type."); 5304 } 5305 } else { /* directory must be specified */ 5306 if (largc != 1) 5307 Error_cnt++; 5308 else if (access(*largv, 2) < 0 && (errno != EACCES)) 5309 /* 5310 * EACCES is ignored here as it may occur 5311 * when any directory component of the path 5312 * does not have write permission, even though 5313 * the destination subdirectory has write 5314 * access. Writing to a read only directory 5315 * is handled later, as in "copy in" mode. 5316 */ 5317 msg(ERRN, 5318 "Error during access() of \"%s\"", *largv); 5319 } 5320 } 5321 if (Error_cnt) 5322 usage(); /* exits! */ 5323 if (Args & (OCi | OCo)) { 5324 if (!Dflag) { 5325 if (Args & (OCB | OCC)) { 5326 if (g_init(&Device, &Archive) < 0) 5327 msg(EXTN, 5328 "Error during initialization"); 5329 } else { 5330 if ((Bufsize = g_init(&Device, &Archive)) < 0) 5331 msg(EXTN, 5332 "Error during initialization"); 5333 } 5334 } 5335 5336 blk_cnt_max = _20K / Bufsize; 5337 if (blk_cnt_max < MX_BUFS) { 5338 blk_cnt_max = MX_BUFS; 5339 } 5340 5341 Buffr.b_base_p = NULL; 5342 5343 for (blk_cnt = blk_cnt_max; blk_cnt > 1; blk_cnt--) { 5344 Buffr.b_size = (size_t)(Bufsize * blk_cnt); 5345 Buffr.b_base_p = e_valloc(E_NORMAL, Buffr.b_size); 5346 if (Buffr.b_base_p != NULL) { 5347 break; 5348 } 5349 } 5350 if (Buffr.b_base_p == NULL || Buffr.b_size < (2 * CPIOBSZ)) { 5351 msg(EXT, "Out of memory"); 5352 } 5353 5354 Buffr.b_out_p = Buffr.b_in_p = Buffr.b_base_p; 5355 Buffr.b_cnt = 0L; 5356 Buffr.b_end_p = Buffr.b_base_p + Buffr.b_size; 5357 } 5358 5359 /* 5360 * Now that Bufsize has stabilized, we can allocate our i/o buffer 5361 */ 5362 Buf_p = e_valloc(E_EXIT, Bufsize); 5363 5364 if (Args & OCp) { /* get destination directory */ 5365 (void) strcpy(Fullnam_p, *largv); 5366 if (stat(Fullnam_p, &DesSt) < 0) 5367 msg(EXTN, "Error during stat() of \"%s\"", Fullnam_p); 5368 if ((DesSt.st_mode & Ftype) != S_IFDIR) 5369 msg(EXT, "\"%s\" is not a directory", Fullnam_p); 5370 } 5371 Full_p = Fullnam_p + strlen(Fullnam_p) - 1; 5372 if (*Full_p != '/') { 5373 Full_p++; 5374 *Full_p = '/'; 5375 } 5376 Full_p++; 5377 *Full_p = '\0'; 5378 (void) strcpy(Lnknam_p, Fullnam_p); 5379 Lnkend_p = Lnknam_p + strlen(Lnknam_p); 5380 (void) getrlimit(RLIMIT_FSIZE, &rlim); 5381 Max_filesz = (off_t)rlim.rlim_cur; 5382 Lnk_hd.L_nxt_p = Lnk_hd.L_bck_p = &Lnk_hd; 5383 Lnk_hd.L_lnk_p = (struct Lnk *)NULL; 5384 } 5385 5386 /* 5387 * set_tym: Set the access and/or modification times for a file. 5388 */ 5389 5390 static void 5391 set_tym(int dirfd, char *nam_p, time_t atime, time_t mtime) 5392 { 5393 struct timeval times[2]; 5394 5395 times[0].tv_sec = atime; 5396 times[0].tv_usec = 0; 5397 times[1].tv_sec = mtime; 5398 times[1].tv_usec = 0; 5399 5400 if (futimesat(dirfd, nam_p, times) < 0) { 5401 if (Args & OCa) { 5402 msg(ERRN, 5403 "Unable to reset access time for \"%s%s%s\"", 5404 (G_p->g_attrnam_p == (char *)NULL) ? 5405 nam_p : Fullnam_p, 5406 (G_p->g_attrnam_p == (char *)NULL) ? 5407 "" : gettext(" Attribute "), 5408 (G_p->g_attrnam_p == (char *)NULL) ? 5409 "" : nam_p); 5410 } else { 5411 msg(ERRN, 5412 "Unable to reset modification time for \"%s%s%s\"", 5413 (G_p->g_attrnam_p == (char *)NULL) ? 5414 nam_p : Fullnam_p, 5415 (G_p->g_attrnam_p == (char *)NULL) ? 5416 "" : gettext(" Attribute "), 5417 (G_p->g_attrnam_p == (char *)NULL) ? 5418 "" : nam_p); 5419 } 5420 } 5421 } 5422 5423 /* 5424 * sigint: Catch interrupts. If an interrupt occurs during the extraction 5425 * of a file from the archive with the -u option set, and the filename did 5426 * exist, remove the current file and restore the original file. Then exit. 5427 */ 5428 5429 /*ARGSUSED*/ 5430 static void 5431 sigint(int sig) 5432 { 5433 char *nam_p; 5434 5435 (void) signal(SIGINT, SIG_IGN); /* block further signals */ 5436 if (!Finished) { 5437 if (Args & OCi) 5438 nam_p = G_p->g_nam_p; 5439 else /* OCp */ 5440 nam_p = Fullnam_p; 5441 if (*Over_p != '\0') { /* There is a temp file */ 5442 if (unlink(nam_p) < 0) { 5443 msg(ERRN, 5444 "Cannot remove incomplete \"%s\"", nam_p); 5445 } 5446 if (rename(Over_p, nam_p) < 0) { 5447 if (link(Over_p, nam_p) < 0) { 5448 msg(ERRN, 5449 "Cannot recover original \"%s\"", 5450 nam_p); 5451 } 5452 if (unlink(Over_p)) { 5453 msg(ERRN, 5454 "Cannot remove temp file \"%s\"", 5455 Over_p); 5456 } 5457 } 5458 } else if (unlink(nam_p)) 5459 msg(ERRN, 5460 "Cannot remove incomplete \"%s\"", nam_p); 5461 *Over_p = '\0'; 5462 } 5463 exit(EXIT_CODE); 5464 } 5465 5466 /* 5467 * swap: Swap bytes (-s), halfwords (-S) or or both halfwords and bytes (-b). 5468 */ 5469 5470 static void 5471 swap(char *buf_p, int cnt) 5472 { 5473 unsigned char tbyte; 5474 int tcnt; 5475 int rcnt; 5476 ushort_t thalf; 5477 5478 rcnt = cnt % 4; 5479 cnt /= 4; 5480 if (Args & (OCb | OCs | BSM)) { 5481 tcnt = cnt; 5482 /* LINTED alignment */ 5483 Swp_p = (union swpbuf *)buf_p; 5484 while (tcnt-- > 0) { 5485 tbyte = Swp_p->s_byte[0]; 5486 Swp_p->s_byte[0] = Swp_p->s_byte[1]; 5487 Swp_p->s_byte[1] = tbyte; 5488 tbyte = Swp_p->s_byte[2]; 5489 Swp_p->s_byte[2] = Swp_p->s_byte[3]; 5490 Swp_p->s_byte[3] = tbyte; 5491 Swp_p++; 5492 } 5493 if (rcnt >= 2) { 5494 tbyte = Swp_p->s_byte[0]; 5495 Swp_p->s_byte[0] = Swp_p->s_byte[1]; 5496 Swp_p->s_byte[1] = tbyte; 5497 tbyte = Swp_p->s_byte[2]; 5498 } 5499 } 5500 if (Args & (OCb | OCS)) { 5501 tcnt = cnt; 5502 /* LINTED alignment */ 5503 Swp_p = (union swpbuf *)buf_p; 5504 while (tcnt-- > 0) { 5505 thalf = Swp_p->s_half[0]; 5506 Swp_p->s_half[0] = Swp_p->s_half[1]; 5507 Swp_p->s_half[1] = thalf; 5508 Swp_p++; 5509 } 5510 } 5511 } 5512 5513 /* 5514 * usage: Print the usage message on stderr and exit. 5515 */ 5516 5517 static void 5518 usage(void) 5519 { 5520 5521 (void) fflush(stdout); 5522 #if defined(O_XATTR) 5523 (void) fprintf(stderr, gettext("USAGE:\n" 5524 "\tcpio -i[bcdfkmrstuv@BSV6] [-C size] " 5525 "[-E file] [-H hdr] [-I file [-M msg]] " 5526 "[-R id] [patterns]\n" 5527 "\tcpio -o[acv@ABLV] [-C size] " 5528 "[-H hdr] [-O file [-M msg]]\n" 5529 "\tcpio -p[adlmuv@LV] [-R id] directory\n")); 5530 #else 5531 (void) fprintf(stderr, gettext("USAGE:\n" 5532 "\tcpio -i[bcdfkmrstuvBSV6] [-C size] " 5533 "[-E file] [-H hdr] [-I file [-M msg]] " 5534 "[-R id] [patterns]\n" 5535 "\tcpio -o[acvABLV] [-C size] " 5536 "[-H hdr] [-O file [-M msg]]\n" 5537 "\tcpio -p[adlmuvLV] [-R id] directory\n")); 5538 #endif 5539 (void) fflush(stderr); 5540 exit(EXIT_CODE); 5541 } 5542 5543 /* 5544 * verbose: For each file, print either the filename (-v) or a dot (-V). 5545 * If the -t option (table of contents) is set, print either the filename, 5546 * or if the -v option is also set, print an "ls -l"-like listing. 5547 */ 5548 5549 static void 5550 verbose(char *nam_p) 5551 { 5552 int i, j, temp; 5553 mode_t mode; 5554 char modestr[12]; 5555 5556 /* 5557 * The printf format and associated arguments to print the current 5558 * filename. Normally, just nam_p. If we're processing an extended 5559 * attribute, these are overridden. 5560 */ 5561 char *name_fmt = "%s"; 5562 const char *name = nam_p; 5563 const char *attribute = NULL; 5564 5565 if (Gen.g_attrnam_p != (char *)NULL) { 5566 /* 5567 * Translation note: 5568 * 'attribute' is a noun. 5569 */ 5570 name_fmt = gettext("%s attribute %s"); 5571 5572 name = (Args & OCp) ? nam_p : Gen.g_attrfnam_p; 5573 attribute = Gen.g_attrnam_p; 5574 } 5575 5576 if ((Gen.g_mode == SECMODE) || ((Hdr_type == USTAR || 5577 Hdr_type == TAR) && Thdr_p->tbuf.t_typeflag == 'A')) { 5578 /* dont print ancillary file */ 5579 aclchar = '+'; 5580 return; 5581 } 5582 for (i = 0; i < 11; i++) 5583 modestr[i] = '-'; 5584 modestr[i] = '\0'; 5585 modestr[i-1] = aclchar; 5586 aclchar = ' '; 5587 5588 if ((Args & OCt) && (Args & OCv)) { 5589 mode = Gen.g_mode; 5590 for (i = 0; i < 3; i++) { 5591 temp = (mode >> (6 - (i * 3))); 5592 j = (i * 3) + 1; 5593 if (S_IROTH & temp) 5594 modestr[j] = 'r'; 5595 if (S_IWOTH & temp) 5596 modestr[j + 1] = 'w'; 5597 if (S_IXOTH & temp) 5598 modestr[j + 2] = 'x'; 5599 } 5600 5601 if (Hdr_type != BAR) { 5602 temp = Gen.g_mode & Ftype; 5603 switch (temp) { 5604 case (S_IFIFO): 5605 modestr[0] = 'p'; 5606 break; 5607 case (S_IFCHR): 5608 modestr[0] = 'c'; 5609 break; 5610 case (S_IFDIR): 5611 modestr[0] = 'd'; 5612 break; 5613 case (S_IFBLK): 5614 modestr[0] = 'b'; 5615 break; 5616 case (S_IFREG): /* was initialized to '-' */ 5617 break; 5618 case (S_IFLNK): 5619 modestr[0] = 'l'; 5620 break; 5621 default: 5622 msg(ERR, "Impossible file type"); 5623 } 5624 } else { /* bar */ 5625 temp = Gen.g_mode & Ftype; 5626 switch (temp) { 5627 case (S_IFIFO): 5628 modestr[0] = 'p'; 5629 break; 5630 case (S_IFCHR): 5631 modestr[0] = 'c'; 5632 break; 5633 case (S_IFDIR): 5634 modestr[0] = 'd'; 5635 break; 5636 case (S_IFBLK): 5637 modestr[0] = 'b'; 5638 break; 5639 } 5640 if (bar_linkflag == SYMTYPE) 5641 modestr[0] = 'l'; 5642 } 5643 if ((S_ISUID & Gen.g_mode) == S_ISUID) 5644 modestr[3] = 's'; 5645 if ((S_ISVTX & Gen.g_mode) == S_ISVTX) 5646 modestr[9] = 't'; 5647 if ((S_ISGID & G_p->g_mode) == S_ISGID && modestr[6] == 'x') 5648 modestr[6] = 's'; 5649 else if ((S_ENFMT & Gen.g_mode) == S_ENFMT && modestr[6] != 'x') 5650 modestr[6] = 'l'; 5651 if ((Hdr_type == TAR || Hdr_type == USTAR) && Gen.g_nlink == 0) 5652 (void) printf("%s%4d ", modestr, (int)Gen.g_nlink+1); 5653 else 5654 (void) printf("%s%4d ", modestr, (int)Gen.g_nlink); 5655 if (Lastuid == (int)Gen.g_uid) { 5656 if (Lastuid == -1) 5657 (void) printf("-1 "); 5658 else 5659 (void) printf("%-9s", Curpw_p->pw_name); 5660 } else { 5661 if (Curpw_p = getpwuid((int)Gen.g_uid)) { 5662 (void) printf("%-9s", Curpw_p->pw_name); 5663 Lastuid = (int)Gen.g_uid; 5664 } else { 5665 (void) printf("%-9d", (int)Gen.g_uid); 5666 Lastuid = -1; 5667 } 5668 } 5669 if (Lastgid == (int)Gen.g_gid) { 5670 if (Lastgid == -1) 5671 (void) printf("-1 "); 5672 else 5673 (void) printf("%-9s", Curgr_p->gr_name); 5674 } else { 5675 if (Curgr_p = getgrgid((int)Gen.g_gid)) { 5676 (void) printf("%-9s", Curgr_p->gr_name); 5677 Lastgid = (int)Gen.g_gid; 5678 } else { 5679 (void) printf("%-9d", (int)Gen.g_gid); 5680 Lastgid = -1; 5681 } 5682 } 5683 5684 /* print file size */ 5685 if (!Aspec || ((Gen.g_mode & Ftype) == S_IFIFO) || 5686 (Hdr_type == BAR && bar_linkflag == SYMTYPE)) { 5687 if (Gen.g_filesz < (1LL << 31)) 5688 (void) printf("%7lld ", 5689 (offset_t)Gen.g_filesz); 5690 else 5691 (void) printf("%11lld ", 5692 (offset_t)Gen.g_filesz); 5693 } else 5694 (void) printf("%3d,%3d ", (int)major(Gen.g_rdev), 5695 (int)minor(Gen.g_rdev)); 5696 (void) cftime(Time, dcgettext(NULL, FORMAT, LC_TIME), 5697 (time_t *)&Gen.g_mtime); 5698 (void) printf("%s, ", Time); 5699 (void) printf(name_fmt, name, attribute); 5700 if ((Gen.g_mode & Ftype) == S_IFLNK) { 5701 if (Hdr_type == USTAR || Hdr_type == TAR) 5702 (void) strcpy(Symlnk_p, 5703 Thdr_p->tbuf.t_linkname); 5704 else { 5705 (void) strncpy(Symlnk_p, Buffr.b_out_p, 5706 Gen.g_filesz); 5707 *(Symlnk_p + Gen.g_filesz) = '\0'; 5708 } 5709 (void) printf(" -> %s", Symlnk_p); 5710 } 5711 if (Hdr_type == BAR) { 5712 if (bar_linkflag == SYMTYPE) 5713 (void) printf(gettext(" symbolic link to %s"), 5714 bar_linkname); 5715 else if (bar_linkflag == '1') 5716 (void) printf(gettext(" linked to %s"), 5717 bar_linkname); 5718 } 5719 if ((Hdr_type == USTAR || Hdr_type == TAR) && 5720 Thdr_p->tbuf.t_typeflag == '1') { 5721 (void) printf(gettext(" linked to %s%s%s"), 5722 (Gen.g_attrnam_p == (char *)NULL) ? 5723 Thdr_p->tbuf.t_linkname : Gen.g_attrfnam_p, 5724 (Gen.g_attrnam_p == (char *)NULL) ? 5725 "" : gettext(" attribute "), 5726 (Gen.g_attrnam_p == (char *)NULL) ? 5727 "" : Gen.g_linktoattrnam_p); 5728 } 5729 (void) printf("\n"); 5730 } else if ((Args & OCt) || (Args & OCv)) { 5731 (void) fprintf(Out_p, name_fmt, name, attribute); 5732 (void) fputc('\n', Out_p); 5733 } else { /* OCV */ 5734 (void) fputc('.', Out_p); 5735 if (Verbcnt++ >= 49) { /* start a new line of dots */ 5736 Verbcnt = 0; 5737 (void) fputc('\n', Out_p); 5738 } 5739 } 5740 (void) fflush(Out_p); 5741 } 5742 5743 #define MK_USHORT(a) (a & 00000177777) 5744 5745 /* 5746 * write_hdr: Transfer header information for the generic structure 5747 * into the format for the selected header and bwrite() the header. 5748 * ACL support: add two new argumnets. secflag indicates that it's an 5749 * ancillary file. len is the size of the file (incl. all security 5750 * attributes). We only have acls now. 5751 */ 5752 5753 static void 5754 write_hdr(int secflag, off_t len) 5755 { 5756 int cnt, pad; 5757 mode_t mode; 5758 uid_t uid; 5759 gid_t gid; 5760 const char warnfmt[] = "%s%s%s : %s"; 5761 5762 if (secflag == ARCHIVE_ACL) { 5763 mode = SECMODE; 5764 } else { 5765 /* 5766 * If attribute is being archived in cpio format then 5767 * zap off the file type bits since those are truly a 5768 * mask and reset them with _XATTR_CPIO_MODE 5769 */ 5770 5771 /* 5772 * len is the value of g_filesz for normal files 5773 * and the length of the special header buffer in 5774 * the case of acl and xattr headers. 5775 */ 5776 if (G_p->g_attrnam_p != (char *)NULL && Hdr_type != USTAR && 5777 Hdr_type != TAR) { 5778 mode = (G_p->g_mode & POSIXMODES) | _XATTR_CPIO_MODE; 5779 } else { 5780 mode = G_p->g_mode; 5781 } 5782 if (secflag != ARCHIVE_XATTR) { 5783 len = G_p->g_filesz; 5784 } 5785 } 5786 5787 uid = G_p->g_uid; 5788 gid = G_p->g_gid; 5789 /* 5790 * Handle EFT uids and gids. If they get too big 5791 * to be represented in a particular format, force 'em to 'nobody'. 5792 */ 5793 switch (Hdr_type) { 5794 case BIN: /* 16-bits of u_short */ 5795 if ((ulong_t)uid > (ulong_t)USHRT_MAX) 5796 uid = UID_NOBODY; 5797 if ((ulong_t)gid > (ulong_t)USHRT_MAX) 5798 gid = GID_NOBODY; 5799 break; 5800 case CHR: /* %.6lo => 262143 base 10 */ 5801 if ((ulong_t)uid > (ulong_t)0777777) 5802 uid = UID_NOBODY; 5803 if ((ulong_t)gid > (ulong_t)0777777) 5804 gid = GID_NOBODY; 5805 break; 5806 case ASC: /* %.8lx => full 32 bits */ 5807 case CRC: 5808 break; 5809 case USTAR: 5810 case TAR: /* %.7lo => 2097151 base 10 */ 5811 if ((ulong_t)uid > (ulong_t)07777777) 5812 uid = UID_NOBODY; 5813 if ((ulong_t)gid > (ulong_t)07777777) 5814 gid = GID_NOBODY; 5815 break; 5816 default: 5817 msg(EXT, "Impossible header type."); 5818 } 5819 5820 /* 5821 * Since cpio formats -don't- encode the symbolic names, print 5822 * a warning message when we map the uid or gid this way. 5823 * Also, if the ownership just changed, clear set[ug]id bits 5824 * 5825 * (Except for USTAR format of course, where we have a string 5826 * representation of the username embedded in the header) 5827 */ 5828 if (uid != G_p->g_uid && Hdr_type != USTAR) { 5829 msg(ERR, warnfmt, 5830 (G_p->g_attrnam_p == (char *)NULL) ? 5831 G_p->g_nam_p : G_p->g_attrfnam_p, 5832 (G_p->g_attrnam_p == (char *)NULL) ? 5833 "" : gettext(" Attribute "), 5834 (G_p->g_attrnam_p == (char *)NULL) ? 5835 "" : G_p->g_attrnam_p, 5836 gettext("uid too large for archive format")); 5837 if (S_ISREG(mode)) 5838 mode &= ~S_ISUID; 5839 } 5840 if (gid != G_p->g_gid && Hdr_type != USTAR) { 5841 msg(ERR, warnfmt, 5842 (G_p->g_attrnam_p == (char *)NULL) ? 5843 G_p->g_nam_p : G_p->g_attrfnam_p, 5844 (G_p->g_attrnam_p == (char *)NULL) ? 5845 "" : gettext(" Attribute "), 5846 (G_p->g_attrnam_p == (char *)NULL) ? 5847 "" : G_p->g_attrnam_p, 5848 gettext("gid too large for archive format")); 5849 if (S_ISREG(mode)) 5850 mode &= ~S_ISGID; 5851 } 5852 5853 switch (Hdr_type) { 5854 case BIN: 5855 case CHR: 5856 case ASC: 5857 case CRC: 5858 cnt = Hdrsz + G_p->g_namesz; 5859 break; 5860 case TAR: 5861 /*FALLTHROUGH*/ 5862 case USTAR: /* TAR and USTAR */ 5863 cnt = TARSZ; 5864 break; 5865 default: 5866 msg(EXT, "Impossible header type."); 5867 } 5868 FLUSH(cnt); 5869 5870 switch (Hdr_type) { 5871 case BIN: 5872 Hdr.h_magic = (short)G_p->g_magic; 5873 Hdr.h_dev = G_p->g_dev; 5874 Hdr.h_ino = G_p->g_ino; 5875 Hdr.h_uid = uid; 5876 Hdr.h_gid = gid; 5877 Hdr.h_mode = mode; 5878 Hdr.h_nlink = G_p->g_nlink; 5879 Hdr.h_rdev = G_p->g_rdev; 5880 mkshort(Hdr.h_mtime, (long)G_p->g_mtime); 5881 Hdr.h_namesize = (short)G_p->g_namesz; 5882 mkshort(Hdr.h_filesize, (long)len); 5883 (void) strcpy(Hdr.h_name, G_p->g_nam_p); 5884 (void) memcpy(Buffr.b_in_p, &Hdr, cnt); 5885 break; 5886 case CHR: 5887 (void) sprintf(Buffr.b_in_p, 5888 "%.6lo%.6lo%.6lo%.6lo%.6lo%.6lo%.6lo%.6lo%.11lo%.6lo%." 5889 "11llo%s", G_p->g_magic, G_p->g_dev, G_p->g_ino, mode, 5890 uid, gid, G_p->g_nlink, MK_USHORT(G_p->g_rdev), 5891 G_p->g_mtime, (long)G_p->g_namesz, (offset_t)len, 5892 G_p->g_nam_p); 5893 break; 5894 case ASC: 5895 case CRC: 5896 (void) sprintf(Buffr.b_in_p, 5897 "%.6lx%.8lx%.8lx%.8lx%.8lx%.8lx%.8lx%.8lx%.8lx%.8lx%." 5898 "8lx%.8lx%.8lx%.8lx%s", 5899 G_p->g_magic, G_p->g_ino, mode, G_p->g_uid, 5900 G_p->g_gid, G_p->g_nlink, G_p->g_mtime, (ulong_t)len, 5901 major(G_p->g_dev), minor(G_p->g_dev), 5902 major(G_p->g_rdev), minor(G_p->g_rdev), 5903 G_p->g_namesz, G_p->g_cksum, G_p->g_nam_p); 5904 break; 5905 case USTAR: 5906 Thdr_p = (union tblock *)Buffr.b_in_p; 5907 (void) memcpy(Thdr_p, Empty, TARSZ); 5908 (void) strncpy(Thdr_p->tbuf.t_name, G_p->g_tname, 5909 (int)strlen(G_p->g_tname)); 5910 (void) sprintf(Thdr_p->tbuf.t_mode, "%07o", (int)mode); 5911 (void) sprintf(Thdr_p->tbuf.t_uid, "%07o", (int)uid); 5912 (void) sprintf(Thdr_p->tbuf.t_gid, "%07o", (int)gid); 5913 (void) sprintf(Thdr_p->tbuf.t_size, "%011llo", 5914 (offset_t)len); 5915 (void) sprintf(Thdr_p->tbuf.t_mtime, "%011lo", G_p->g_mtime); 5916 if (secflag == ARCHIVE_ACL) { 5917 Thdr_p->tbuf.t_typeflag = 'A'; /* ACL file type */ 5918 } else if (secflag == ARCHIVE_XATTR || 5919 (G_p->g_attrnam_p != (char *)NULL)) { 5920 Thdr_p->tbuf.t_typeflag = _XATTR_HDRTYPE; 5921 } else { 5922 Thdr_p->tbuf.t_typeflag = G_p->g_typeflag; 5923 } 5924 if (T_lname[0] != '\0') { 5925 /* 5926 * if not a symbolic link 5927 */ 5928 if (((G_p->g_mode & Ftype) != S_IFLNK) && 5929 (G_p->g_attrnam_p == (char *)NULL)) { 5930 Thdr_p->tbuf.t_typeflag = LNKTYPE; 5931 (void) sprintf(Thdr_p->tbuf.t_size, 5932 "%011lo", 0L); 5933 } 5934 (void) strncpy(Thdr_p->tbuf.t_linkname, T_lname, 5935 strlen(T_lname)); 5936 } 5937 (void) sprintf(Thdr_p->tbuf.t_magic, "%s", TMAGIC); 5938 (void) sprintf(Thdr_p->tbuf.t_version, "%2s", TVERSION); 5939 (void) sprintf(Thdr_p->tbuf.t_uname, "%s", G_p->g_uname); 5940 (void) sprintf(Thdr_p->tbuf.t_gname, "%s", G_p->g_gname); 5941 (void) sprintf(Thdr_p->tbuf.t_devmajor, "%07o", 5942 (int)major(G_p->g_rdev)); 5943 (void) sprintf(Thdr_p->tbuf.t_devminor, "%07o", 5944 (int)minor(G_p->g_rdev)); 5945 if (Gen.g_prefix) { 5946 (void) sprintf(Thdr_p->tbuf.t_prefix, "%s", 5947 Gen.g_prefix); 5948 free(Gen.g_prefix); 5949 Gen.g_prefix = NULL; 5950 } else { 5951 (void) sprintf(Thdr_p->tbuf.t_prefix, "%s", ""); 5952 } 5953 (void) sprintf(Thdr_p->tbuf.t_cksum, "%07o", 5954 (int)cksum(TARTYP, 0, NULL)); 5955 break; 5956 case TAR: 5957 Thdr_p = (union tblock *)Buffr.b_in_p; 5958 (void) memcpy(Thdr_p, Empty, TARSZ); 5959 (void) strncpy(Thdr_p->tbuf.t_name, G_p->g_nam_p, 5960 G_p->g_namesz); 5961 (void) sprintf(Thdr_p->tbuf.t_mode, "%07o ", (int)mode); 5962 (void) sprintf(Thdr_p->tbuf.t_uid, "%07o ", (int)uid); 5963 (void) sprintf(Thdr_p->tbuf.t_gid, "%07o ", (int)gid); 5964 (void) sprintf(Thdr_p->tbuf.t_size, "%011llo ", 5965 (offset_t)len); 5966 (void) sprintf(Thdr_p->tbuf.t_mtime, "%011o ", 5967 (int)G_p->g_mtime); 5968 if (T_lname[0] != '\0') { 5969 Thdr_p->tbuf.t_typeflag = '1'; 5970 } else { 5971 Thdr_p->tbuf.t_typeflag = '\0'; 5972 } 5973 (void) strncpy(Thdr_p->tbuf.t_linkname, T_lname, 5974 strlen(T_lname)); 5975 break; 5976 default: 5977 msg(EXT, "Impossible header type."); 5978 } /* Hdr_type */ 5979 5980 Buffr.b_in_p += cnt; 5981 Buffr.b_cnt += cnt; 5982 pad = ((cnt + Pad_val) & ~Pad_val) - cnt; 5983 if (pad != 0) { 5984 FLUSH(pad); 5985 (void) memcpy(Buffr.b_in_p, Empty, pad); 5986 Buffr.b_in_p += pad; 5987 Buffr.b_cnt += pad; 5988 } 5989 } 5990 5991 /* 5992 * write_trail: Create the appropriate trailer for the selected header type 5993 * and bwrite the trailer. Pad the buffer with nulls out to the next Bufsize 5994 * boundary, and force a write. If the write completes, or if the trailer is 5995 * completely written (but not all of the padding nulls (as can happen on end 5996 * of medium)) return. Otherwise, the trailer was not completely written out, 5997 * so re-pad the buffer with nulls and try again. 5998 */ 5999 6000 static void 6001 write_trail(void) 6002 { 6003 int cnt, need; 6004 6005 switch (Hdr_type) { 6006 case BIN: 6007 Gen.g_magic = CMN_BIN; 6008 break; 6009 case CHR: 6010 Gen.g_magic = CMN_BIN; 6011 break; 6012 case ASC: 6013 Gen.g_magic = CMN_ASC; 6014 break; 6015 case CRC: 6016 Gen.g_magic = CMN_CRC; 6017 break; 6018 } 6019 6020 switch (Hdr_type) { 6021 case BIN: 6022 case CHR: 6023 case ASC: 6024 case CRC: 6025 Gen.g_mode = Gen.g_uid = Gen.g_gid = 0; 6026 Gen.g_nlink = 1; 6027 Gen.g_mtime = Gen.g_ino = Gen.g_dev = 0; 6028 Gen.g_rdev = Gen.g_cksum = 0; 6029 Gen.g_filesz = (off_t)0; 6030 Gen.g_namesz = strlen("TRAILER!!!") + 1; 6031 (void) strcpy(Gen.g_nam_p, "TRAILER!!!"); 6032 G_p = &Gen; 6033 write_hdr(ARCHIVE_NORMAL, (off_t)0); 6034 break; 6035 case TAR: 6036 /*FALLTHROUGH*/ 6037 case USTAR: /* TAR and USTAR */ 6038 for (cnt = 0; cnt < 3; cnt++) { 6039 FLUSH(TARSZ); 6040 (void) memcpy(Buffr.b_in_p, Empty, TARSZ); 6041 Buffr.b_in_p += TARSZ; 6042 Buffr.b_cnt += TARSZ; 6043 } 6044 break; 6045 default: 6046 msg(EXT, "Impossible header type."); 6047 } 6048 need = Bufsize - (Buffr.b_cnt % Bufsize); 6049 if (need == Bufsize) 6050 need = 0; 6051 6052 while (Buffr.b_cnt > 0) { 6053 while (need > 0) { 6054 cnt = (need < TARSZ) ? need : TARSZ; 6055 need -= cnt; 6056 FLUSH(cnt); 6057 (void) memcpy(Buffr.b_in_p, Empty, cnt); 6058 Buffr.b_in_p += cnt; 6059 Buffr.b_cnt += cnt; 6060 } 6061 bflush(); 6062 } 6063 } 6064 6065 /* 6066 * if archives in USTAR format, check if typeflag == '5' for directories 6067 */ 6068 static int 6069 ustar_dir(void) 6070 { 6071 if (Hdr_type == USTAR || Hdr_type == TAR) { 6072 if (Thdr_p->tbuf.t_typeflag == '5') 6073 return (1); 6074 } 6075 return (0); 6076 } 6077 6078 /* 6079 * if archives in USTAR format, check if typeflag == '3' || '4' || '6' 6080 * for character, block, fifo special files 6081 */ 6082 static int 6083 ustar_spec(void) 6084 { 6085 int typeflag; 6086 6087 if (Hdr_type == USTAR || Hdr_type == TAR) { 6088 typeflag = Thdr_p->tbuf.t_typeflag; 6089 if (typeflag == '3' || typeflag == '4' || typeflag == '6') 6090 return (1); 6091 } 6092 return (0); 6093 } 6094 6095 /* 6096 * The return value is a pointer to a converted copy of the information in 6097 * FromStat if the file is representable in -Hodc format, and NULL otherwise. 6098 */ 6099 6100 static struct stat * 6101 convert_to_old_stat(struct stat *FromStat, char *namep, char *attrp) 6102 { 6103 static struct stat ToSt; 6104 cpioinfo_t TmpSt; 6105 6106 (void) memset(&TmpSt, 0, sizeof (cpioinfo_t)); 6107 stat_to_svr32_stat(&TmpSt, FromStat); 6108 (void) memset(&ToSt, 0, sizeof (ToSt)); 6109 6110 if (TmpSt.st_rdev == (o_dev_t)NODEV && 6111 (((TmpSt.st_mode & Ftype) == S_IFCHR) || 6112 ((TmpSt.st_mode & Ftype) == S_IFBLK))) { 6113 /* 6114 * Encountered a problem representing the rdev information. 6115 * Don't archive it. 6116 */ 6117 6118 msg(ERR, "Error -Hodc format can't support expanded" 6119 "types on %s%s%s", 6120 namep, 6121 (attrp == NULL) ? "" : gettext(" Attribute"), 6122 (attrp == NULL) ? "" : attrp); 6123 return (NULL); 6124 } 6125 6126 if (TmpSt.st_dev == (o_dev_t)NODEV) { 6127 /* 6128 * Having trouble representing the device/inode pair. We can't 6129 * track links in this case; break them all into separate 6130 * files. 6131 */ 6132 6133 TmpSt.st_ino = 0; 6134 6135 if (((TmpSt.st_mode & Ftype) != S_IFDIR) && 6136 TmpSt.st_nlink > 1) 6137 msg(POST, 6138 "Warning: file %s%s%s has large " 6139 "device number - linked " 6140 "files will be restored as " 6141 "separate files", 6142 namep, 6143 (attrp == NULL) ? "" : gettext(" Attribute"), 6144 (attrp == NULL) ? "" : attrp); 6145 6146 /* ensure no links */ 6147 6148 TmpSt.st_nlink = 1; 6149 } 6150 6151 /* Start converting values */ 6152 6153 if (TmpSt.st_dev < 0) { 6154 ToSt.st_dev = 0; 6155 } else { 6156 ToSt.st_dev = (dev_t)TmpSt.st_dev; 6157 } 6158 6159 /* -actual- not truncated uid */ 6160 6161 ToSt.st_uid = TmpSt.st_uid; 6162 6163 /* -actual- not truncated gid */ 6164 6165 ToSt.st_gid = TmpSt.st_gid; 6166 ToSt.st_ino = (ino_t)TmpSt.st_ino; 6167 ToSt.st_mode = (mode_t)TmpSt.st_mode; 6168 ToSt.st_mtime = (ulong_t)TmpSt.st_modtime; 6169 ToSt.st_nlink = (nlink_t)TmpSt.st_nlink; 6170 ToSt.st_size = (off_t)TmpSt.st_size; 6171 ToSt.st_rdev = (dev_t)TmpSt.st_rdev; 6172 6173 return (&ToSt); 6174 } 6175 6176 /* 6177 * In the beginning of each bar archive, there is a header which describes the 6178 * current volume being created, followed by a header which describes the 6179 * current file being created, followed by the file itself. If there is 6180 * more than one file to be created, a separate header will be created for 6181 * each additional file. This structure may be repeated if the bar archive 6182 * contains multiple volumes. If a file spans across volumes, its header 6183 * will not be repeated in the next volume. 6184 * +------------------+ 6185 * | vol header | 6186 * |------------------| 6187 * | file header i | i = 0 6188 * |------------------| 6189 * | <file i> | 6190 * |------------------| 6191 * | file header i+1 | 6192 * |------------------| 6193 * | <file i+1> | 6194 * |------------------| 6195 * | . | 6196 * | . | 6197 * | . | 6198 * +------------------+ 6199 */ 6200 6201 /* 6202 * read in the header that describes the current volume of the bar archive 6203 * to be extracted. 6204 */ 6205 static void 6206 read_bar_vol_hdr(void) 6207 { 6208 union b_block *tmp_hdr; 6209 6210 tmp_hdr = (union b_block *)Buffr.b_out_p; 6211 if (tmp_hdr->dbuf.bar_magic[0] == BAR_VOLUME_MAGIC) { 6212 6213 if (bar_Vhdr == NULL) { 6214 bar_Vhdr = e_zalloc(E_EXIT, TBLOCK); 6215 } 6216 (void) memcpy(&(bar_Vhdr->dbuf), &(tmp_hdr->dbuf), TBLOCK); 6217 } else { 6218 (void) fprintf(stderr, gettext( 6219 "bar error: cannot read volume header\n")); 6220 exit(1); 6221 } 6222 6223 (void) sscanf(bar_Vhdr->dbuf.mode, "%8lo", &Gen_bar_vol.g_mode); 6224 (void) sscanf(bar_Vhdr->dbuf.uid, "%8d", (int *)&Gen_bar_vol.g_uid); 6225 (void) sscanf(bar_Vhdr->dbuf.gid, "%8d", (int *)&Gen_bar_vol.g_gid); 6226 (void) sscanf(bar_Vhdr->dbuf.size, "%12llo", 6227 (u_off_t *)&Gen_bar_vol.g_filesz); 6228 (void) sscanf(bar_Vhdr->dbuf.mtime, "%12lo", &Gen_bar_vol.g_mtime); 6229 (void) sscanf(bar_Vhdr->dbuf.chksum, "%8lo", &Gen_bar_vol.g_cksum); 6230 6231 /* set the compress flag */ 6232 if (bar_Vhdr->dbuf.compressed == '1') 6233 Compressed = 1; 6234 else 6235 Compressed = 0; 6236 6237 Buffr.b_out_p += 512; 6238 Buffr.b_cnt -= 512; 6239 6240 /* 6241 * not the first volume; exit 6242 */ 6243 if (strcmp(bar_Vhdr->dbuf.volume_num, "1") != 0) { 6244 (void) fprintf(stderr, 6245 gettext("error: This is not volume 1. ")); 6246 (void) fprintf(stderr, gettext("This is volume %s. "), 6247 bar_Vhdr->dbuf.volume_num); 6248 (void) fprintf(stderr, gettext("Please insert volume 1.\n")); 6249 exit(1); 6250 } 6251 6252 read_bar_file_hdr(); 6253 } 6254 6255 /* 6256 * read in the header that describes the current file to be extracted 6257 */ 6258 static void 6259 read_bar_file_hdr(void) 6260 { 6261 union b_block *tmp_hdr; 6262 char *start_of_name, *name_p; 6263 char *tmp; 6264 6265 if (*Buffr.b_out_p == '\0') { 6266 *Gen.g_nam_p = '\0'; 6267 exit(0); 6268 } 6269 6270 tmp_hdr = (union b_block *)Buffr.b_out_p; 6271 6272 tmp = &tmp_hdr->dbuf.mode[1]; 6273 (void) sscanf(tmp, "%8lo", &Gen.g_mode); 6274 (void) sscanf(tmp_hdr->dbuf.uid, "%8lo", &Gen.g_uid); 6275 (void) sscanf(tmp_hdr->dbuf.gid, "%8lo", &Gen.g_gid); 6276 (void) sscanf(tmp_hdr->dbuf.size, "%12llo", 6277 (u_off_t *)&Gen.g_filesz); 6278 (void) sscanf(tmp_hdr->dbuf.mtime, "%12lo", &Gen.g_mtime); 6279 (void) sscanf(tmp_hdr->dbuf.chksum, "%8lo", &Gen.g_cksum); 6280 (void) sscanf(tmp_hdr->dbuf.rdev, "%8lo", &Gen.g_rdev); 6281 6282 #define to_new_major(x) (int)((unsigned)((x) & OMAXMAJ) << NBITSMINOR) 6283 #define to_new_minor(x) (int)((x) & OMAXMIN) 6284 Gen.g_rdev = to_new_major(Gen.g_rdev) | to_new_minor(Gen.g_rdev); 6285 bar_linkflag = tmp_hdr->dbuf.linkflag; 6286 start_of_name = &tmp_hdr->dbuf.start_of_name; 6287 6288 6289 name_p = Gen.g_nam_p; 6290 while (*name_p++ = *start_of_name++) 6291 ; 6292 *name_p = '\0'; 6293 if (bar_linkflag == LNKTYPE || bar_linkflag == SYMTYPE) 6294 (void) strcpy(bar_linkname, start_of_name); 6295 6296 Gen.g_namesz = strlen(Gen.g_nam_p) + 1; 6297 (void) strcpy(nambuf, Gen.g_nam_p); 6298 } 6299 6300 /* 6301 * if the bar archive is compressed, set up a pipe and do the de-compression 6302 * as the compressed file is read in. 6303 */ 6304 static void 6305 setup_uncompress(FILE **pipef) 6306 { 6307 char *cmd_buf; 6308 size_t cmdlen; 6309 6310 cmd_buf = e_zalloc(E_EXIT, MAXPATHLEN * 2); 6311 6312 if (access(Gen.g_nam_p, W_OK) != 0) { 6313 cmdlen = snprintf(cmd_buf, MAXPATHLEN * 2, 6314 "chmod +w '%s'; uncompress -c > '%s'; " 6315 "chmod 0%o '%s'", 6316 Gen.g_nam_p, Gen.g_nam_p, (int)G_p->g_mode, Gen.g_nam_p); 6317 } else { 6318 cmdlen = snprintf(cmd_buf, MAXPATHLEN * 2, 6319 "uncompress -c > '%s'", Gen.g_nam_p); 6320 } 6321 6322 if (cmdlen >= MAXPATHLEN * 2 || 6323 (*pipef = popen(cmd_buf, "w")) == NULL) { 6324 (void) fprintf(stderr, gettext("error\n")); 6325 exit(1); 6326 } 6327 6328 if (close(Ofile) != 0) 6329 msg(EXTN, "close error"); 6330 Ofile = fileno(*pipef); 6331 6332 free(cmd_buf); 6333 } 6334 6335 /* 6336 * if the bar archive spans multiple volumes, read in the header that 6337 * describes the next volume. 6338 */ 6339 static void 6340 skip_bar_volhdr(void) 6341 { 6342 char *buff; 6343 union b_block *tmp_hdr; 6344 6345 buff = e_zalloc(E_EXIT, (uint_t)Bufsize); 6346 6347 if (g_read(Device, Archive, buff, Bufsize) < 0) { 6348 (void) fprintf(stderr, gettext( 6349 "error in skip_bar_volhdr\n")); 6350 } else { 6351 6352 tmp_hdr = (union b_block *)buff; 6353 if (tmp_hdr->dbuf.bar_magic[0] == BAR_VOLUME_MAGIC) { 6354 6355 if (bar_Vhdr == NULL) { 6356 bar_Vhdr = e_zalloc(E_EXIT, TBLOCK); 6357 } 6358 (void) memcpy(&(bar_Vhdr->dbuf), 6359 &(tmp_hdr->dbuf), TBLOCK); 6360 } else { 6361 (void) fprintf(stderr, 6362 gettext("cpio error: cannot read bar volume " 6363 "header\n")); 6364 exit(1); 6365 } 6366 6367 (void) sscanf(bar_Vhdr->dbuf.mode, "%8lo", 6368 &Gen_bar_vol.g_mode); 6369 (void) sscanf(bar_Vhdr->dbuf.uid, "%8lo", 6370 &Gen_bar_vol.g_uid); 6371 (void) sscanf(bar_Vhdr->dbuf.gid, "%8lo", 6372 &Gen_bar_vol.g_gid); 6373 (void) sscanf(bar_Vhdr->dbuf.size, "%12llo", 6374 (u_off_t *)&Gen_bar_vol.g_filesz); 6375 (void) sscanf(bar_Vhdr->dbuf.mtime, "%12lo", 6376 &Gen_bar_vol.g_mtime); 6377 (void) sscanf(bar_Vhdr->dbuf.chksum, "%8lo", 6378 &Gen_bar_vol.g_cksum); 6379 if (bar_Vhdr->dbuf.compressed == '1') 6380 Compressed = 1; 6381 else 6382 Compressed = 0; 6383 } 6384 6385 /* 6386 * Now put the rest of the bytes read in into the data buffer. 6387 */ 6388 (void) memcpy(Buffr.b_in_p, &buff[512], (Bufsize - 512)); 6389 Buffr.b_in_p += (Bufsize - 512); 6390 Buffr.b_cnt += (long)(Bufsize - 512); 6391 6392 free(buff); 6393 } 6394 6395 /* 6396 * check the linkflag which indicates the type of the file to be extracted, 6397 * invoke the corresponding routine to extract the file. 6398 */ 6399 static void 6400 bar_file_in(void) 6401 { 6402 /* 6403 * the file is a directory 6404 */ 6405 if (Adir) { 6406 if (ckname(1) != F_SKIP && creat_spec(G_p->g_dirfd) > 0) { 6407 VERBOSE((Args & (OCv | OCV)), G_p->g_nam_p); 6408 } 6409 return; 6410 } 6411 6412 switch (bar_linkflag) { 6413 case REGTYPE: 6414 /* regular file */ 6415 if ((ckname(1) == F_SKIP) || 6416 (Ofile = openout(G_p->g_dirfd)) < 0) { 6417 data_in(P_SKIP); 6418 } else { 6419 data_in(P_PROC); 6420 } 6421 break; 6422 case LNKTYPE: 6423 /* hard link */ 6424 if (ckname(1) == F_SKIP) { 6425 break; 6426 } 6427 (void) creat_lnk(G_p->g_dirfd, bar_linkname, G_p->g_nam_p); 6428 break; 6429 case SYMTYPE: 6430 /* symbolic link */ 6431 if ((ckname(1) == F_SKIP) || 6432 (Ofile = openout(G_p->g_dirfd)) < 0) { 6433 data_in(P_SKIP); 6434 } else { 6435 data_in(P_PROC); 6436 } 6437 break; 6438 case CHRTYPE: 6439 /* character device or FIFO */ 6440 if (ckname(1) != F_SKIP && creat_spec(G_p->g_dirfd) > 0) { 6441 VERBOSE((Args & (OCv | OCV)), G_p->g_nam_p); 6442 } 6443 break; 6444 default: 6445 (void) fprintf(stderr, gettext("error: unknown file type\n")); 6446 break; 6447 } 6448 } 6449 6450 6451 /* 6452 * This originally came from libgenIO/g_init.c 6453 * XXX And it is very broken. 6454 */ 6455 6456 /* #include <sys/statvfs.h> */ 6457 #include <ftw.h> 6458 /* #include <libgenIO.h> */ 6459 #define G_TM_TAPE 1 /* Tapemaster controller */ 6460 #define G_XY_DISK 3 /* xy disks */ 6461 #define G_SD_DISK 7 /* scsi sd disk */ 6462 #define G_XT_TAPE 8 /* xt tapes */ 6463 #define G_SF_FLOPPY 9 /* sf floppy */ 6464 #define G_XD_DISK 10 /* xd disks */ 6465 #define G_ST_TAPE 11 /* scsi tape */ 6466 #define G_NS 12 /* noswap pseudo-dev */ 6467 #define G_RAM 13 /* ram pseudo-dev */ 6468 #define G_FT 14 /* tftp */ 6469 #define G_HD 15 /* 386 network disk */ 6470 #define G_FD 16 /* 386 AT disk */ 6471 #define G_FILE 28 /* file, not a device */ 6472 #define G_NO_DEV 29 /* device does not require special treatment */ 6473 #define G_DEV_MAX 30 /* last valid device type */ 6474 6475 /* 6476 * g_init: Determine the device being accessed, set the buffer size, 6477 * and perform any device specific initialization. Since at this point 6478 * Sun has no system call to read the configuration, the major numbers 6479 * are assumed to be static and types are figured out as such. However, 6480 * as a rough estimate, the buffer size for all types is set to 512 6481 * as a default. 6482 */ 6483 6484 static int 6485 g_init(int *devtype, int *fdes) 6486 { 6487 int bufsize; 6488 struct stat st_buf; 6489 struct statvfs stfs_buf; 6490 6491 *devtype = G_NO_DEV; 6492 bufsize = -1; 6493 if (fstat(*fdes, &st_buf) == -1) 6494 return (-1); 6495 if (!S_ISCHR(st_buf.st_mode) && !S_ISBLK(st_buf.st_mode)) { 6496 if (S_ISFIFO(st_buf.st_mode)) { 6497 bufsize = 512; 6498 } else { 6499 /* find block size for this file system */ 6500 *devtype = G_FILE; 6501 if (fstatvfs(*fdes, &stfs_buf) < 0) { 6502 bufsize = -1; 6503 errno = ENODEV; 6504 } else 6505 bufsize = stfs_buf.f_bsize; 6506 } 6507 6508 return (bufsize); 6509 6510 /* 6511 * We'll have to add a remote attribute to stat but this 6512 * should work for now. 6513 */ 6514 } else if (st_buf.st_dev & 0x8000) /* if remote rdev */ 6515 return (512); 6516 6517 bufsize = 512; 6518 6519 if (Hdr_type == BAR) { 6520 if (is_tape(*fdes)) { 6521 bufsize = BAR_TAPE_SIZE; 6522 (void) fprintf(stderr, "Archiving to tape"); 6523 (void) fprintf(stderr, " blocking factor 126\n"); 6524 } else if (is_floppy(*fdes)) { 6525 bufsize = BAR_FLOPPY_SIZE; 6526 (void) fprintf(stderr, "Archiving to floppy"); 6527 (void) fprintf(stderr, " blocking factor 18\n"); 6528 } 6529 } 6530 6531 return (bufsize); 6532 } 6533 6534 /* 6535 * This originally came from libgenIO/g_read.c 6536 */ 6537 6538 /* 6539 * g_read: Read nbytes of data from fdes (of type devtype) and place 6540 * data in location pointed to by buf. In case of end of medium, 6541 * translate (where necessary) device specific EOM indications into 6542 * the generic EOM indication of rv = -1, errno = ENOSPC. 6543 */ 6544 6545 static int 6546 g_read(int devtype, int fdes, char *buf, unsigned nbytes) 6547 { 6548 int rv; 6549 6550 if (devtype < 0 || devtype >= G_DEV_MAX) { 6551 errno = ENODEV; 6552 return (-1); 6553 } 6554 6555 rv = read(fdes, buf, nbytes); 6556 6557 /* st devices return 0 when no space left */ 6558 if ((rv == 0 && errno == 0 && Hdr_type != BAR) || 6559 (rv == -1 && errno == EIO)) { 6560 errno = 0; 6561 rv = 0; 6562 } 6563 6564 return (rv); 6565 } 6566 6567 /* 6568 * This originally came from libgenIO/g_write.c 6569 */ 6570 6571 /* 6572 * g_write: Write nbytes of data to fdes (of type devtype) from 6573 * the location pointed to by buf. In case of end of medium, 6574 * translate (where necessary) device specific EOM indications into 6575 * the generic EOM indication of rv = -1, errno = ENOSPC. 6576 */ 6577 6578 static int 6579 g_write(int devtype, int fdes, char *buf, unsigned nbytes) 6580 { 6581 int rv; 6582 6583 if (devtype < 0 || devtype >= G_DEV_MAX) { 6584 errno = ENODEV; 6585 return (-1); 6586 } 6587 6588 rv = write(fdes, buf, nbytes); 6589 6590 /* st devices return 0 when no more space left */ 6591 if ((rv == 0 && errno == 0) || (rv == -1 && errno == EIO)) { 6592 errno = ENOSPC; 6593 rv = -1; 6594 } 6595 6596 return (rv); 6597 } 6598 6599 /* 6600 * Test for tape 6601 */ 6602 6603 static int 6604 is_tape(int fd) 6605 { 6606 struct mtget stuff; 6607 6608 /* 6609 * try to do a generic tape ioctl, just to see if 6610 * the thing is in fact a tape drive(er). 6611 */ 6612 if (ioctl(fd, MTIOCGET, &stuff) != -1) { 6613 /* the ioctl succeeded, must have been a tape */ 6614 return (1); 6615 } 6616 return (0); 6617 } 6618 6619 /* 6620 * Test for floppy 6621 */ 6622 6623 static int 6624 is_floppy(int fd) 6625 { 6626 struct fd_char stuff; 6627 6628 /* 6629 * try to get the floppy drive characteristics, just to see if 6630 * the thing is in fact a floppy drive(er). 6631 */ 6632 if (ioctl(fd, FDIOGCHAR, &stuff) != -1) { 6633 /* the ioctl succeeded, must have been a floppy */ 6634 return (1); 6635 } 6636 6637 return (0); 6638 } 6639 6640 /* 6641 * New functions for ACLs and other security attributes 6642 */ 6643 6644 /* 6645 * The function appends the new security attribute info to the end of 6646 * existing secinfo. 6647 */ 6648 static int 6649 append_secattr( 6650 char **secinfo, /* existing security info */ 6651 int *secinfo_len, /* length of existing security info */ 6652 acl_t *aclp) /* new attribute data pointer */ 6653 { 6654 char *new_secinfo; 6655 char *attrtext; 6656 size_t newattrsize; 6657 int oldsize; 6658 6659 /* no need to add */ 6660 if (aclp == NULL) { 6661 return (0); 6662 } 6663 6664 switch (acl_type(aclp)) { 6665 case ACLENT_T: 6666 case ACE_T: 6667 /* LINTED alignment */ 6668 attrtext = acl_totext(aclp, ACL_APPEND_ID | ACL_COMPACT_FMT); 6669 if (attrtext == NULL) { 6670 (void) fprintf(stderr, "acltotext failed\n"); 6671 return (-1); 6672 } 6673 /* header: type + size = 8 */ 6674 newattrsize = 8 + strlen(attrtext) + 1; 6675 attr = e_zalloc(E_NORMAL, newattrsize); 6676 if (attr == NULL) { 6677 (void) fprintf(stderr, "can't allocate memory\n"); 6678 return (-1); 6679 } 6680 attr->attr_type = (acl_type(aclp) == ACLENT_T) ? 6681 UFSD_ACL : ACE_ACL; 6682 /* acl entry count */ 6683 (void) sprintf(attr->attr_len, "%06o", acl_cnt(aclp)); 6684 (void) strcpy((char *)&attr->attr_info[0], attrtext); 6685 free(attrtext); 6686 break; 6687 6688 /* SunFed's case goes here */ 6689 6690 default: 6691 (void) fprintf(stderr, "unrecognized attribute type\n"); 6692 return (-1); 6693 } 6694 6695 /* old security info + new attr header(8) + new attr */ 6696 oldsize = *secinfo_len; 6697 *secinfo_len += newattrsize; 6698 new_secinfo = e_zalloc(E_NORMAL, (uint_t)*secinfo_len); 6699 if (new_secinfo == NULL) { 6700 (void) fprintf(stderr, "can't allocate memory\n"); 6701 *secinfo_len -= newattrsize; 6702 return (-1); 6703 } 6704 6705 (void) memcpy(new_secinfo, *secinfo, oldsize); 6706 (void) memcpy(new_secinfo + oldsize, attr, newattrsize); 6707 6708 free(*secinfo); 6709 *secinfo = new_secinfo; 6710 return (0); 6711 } 6712 6713 static void 6714 write_ancillary(char *secinfo, int len) 6715 { 6716 long pad; 6717 long cnt; 6718 6719 /* Just tranditional permissions or no security attribute info */ 6720 if (len == 0) { 6721 return; 6722 } 6723 6724 /* write out security info */ 6725 while (len > 0) { 6726 cnt = (unsigned)(len > CPIOBSZ) ? CPIOBSZ : len; 6727 FLUSH(cnt); 6728 errno = 0; 6729 (void) memcpy(Buffr.b_in_p, secinfo, (unsigned)cnt); 6730 Buffr.b_in_p += cnt; 6731 Buffr.b_cnt += (long)cnt; 6732 len -= (long)cnt; 6733 } 6734 pad = (Pad_val + 1 - (cnt & Pad_val)) & Pad_val; 6735 if (pad != 0) { 6736 FLUSH(pad); 6737 (void) memcpy(Buffr.b_in_p, Empty, pad); 6738 Buffr.b_in_p += pad; 6739 Buffr.b_cnt += pad; 6740 } 6741 } 6742 6743 static int 6744 remove_dir(char *path) 6745 { 6746 DIR *name; 6747 struct dirent *direct; 6748 struct stat sbuf; 6749 char *path_copy; 6750 6751 #define MSG1 "remove_dir() failed to stat(\"%s\") " 6752 #define MSG2 "remove_dir() failed to remove_dir(\"%s\") " 6753 #define MSG3 "remove_dir() failed to unlink(\"%s\") " 6754 6755 /* 6756 * Open the directory for reading. 6757 */ 6758 if ((name = opendir(path)) == NULL) { 6759 msg(ERRN, "remove_dir() failed to opendir(\"%s\") ", path); 6760 return (-1); 6761 } 6762 6763 if (chdir(path) == -1) { 6764 msg(ERRN, "remove_dir() failed to chdir(\"%s\") ", path); 6765 return (-1); 6766 } 6767 6768 /* 6769 * Read every directory entry. 6770 */ 6771 while ((direct = readdir(name)) != NULL) { 6772 /* 6773 * Ignore "." and ".." entries. 6774 */ 6775 if (strcmp(direct->d_name, ".") == 0 || 6776 strcmp(direct->d_name, "..") == 0) 6777 continue; 6778 6779 if (lstat(direct->d_name, &sbuf) == -1) { 6780 msg(ERRN, MSG1, direct->d_name); 6781 (void) closedir(name); 6782 return (-1); 6783 } 6784 6785 if (S_ISDIR(sbuf.st_mode)) { 6786 if (remove_dir(direct->d_name) == -1) { 6787 msg(ERRN, MSG2, direct->d_name); 6788 (void) closedir(name); 6789 return (-1); 6790 } 6791 } else { 6792 if (unlink(direct->d_name) == -1) { 6793 msg(ERRN, MSG3, direct->d_name); 6794 (void) closedir(name); 6795 return (-1); 6796 } 6797 } 6798 6799 } 6800 6801 /* 6802 * Close the directory we just finished reading. 6803 */ 6804 (void) closedir(name); 6805 6806 /* 6807 * Change directory to the parent directory... 6808 */ 6809 if (chdir("..") == -1) { 6810 msg(ERRN, "remove_dir() failed to chdir(\"..\") "); 6811 return (-1); 6812 } 6813 6814 /* 6815 * ...and finally remove the directory; note we have to 6816 * make a copy since basename is free to modify its input. 6817 */ 6818 path_copy = e_strdup(E_NORMAL, path); 6819 if (path_copy == NULL) { 6820 msg(ERRN, "cannot strdup() the directory pathname "); 6821 return (-1); 6822 } 6823 6824 if (rmdir(basename(path_copy)) == -1) { 6825 free(path_copy); 6826 msg(ERRN, "remove_dir() failed to rmdir(\"%s\") ", path); 6827 return (-1); 6828 } 6829 6830 free(path_copy); 6831 return (0); 6832 6833 } 6834 6835 static int 6836 save_cwd(void) 6837 { 6838 return (open(".", O_RDONLY)); 6839 } 6840 6841 static void 6842 rest_cwd(int cwd) 6843 { 6844 (void) fchdir(cwd); 6845 (void) close(cwd); 6846 } 6847 6848 #if defined(O_XATTR) 6849 static void 6850 xattrs_out(int (*func)()) 6851 { 6852 int dirpfd; 6853 int filefd; 6854 DIR *dirp; 6855 struct dirent *dp; 6856 int slen; 6857 char *namep, *savenamep; 6858 6859 if (pathconf(G_p->g_nam_p, _PC_XATTR_EXISTS) != 1) { 6860 return; 6861 } 6862 6863 /* 6864 * If aclp still exists then free it since it is was set when base 6865 * file was extracted. 6866 */ 6867 if (aclp != NULL) { 6868 acl_free(aclp); 6869 aclp = NULL; 6870 acl_is_set = 0; 6871 } 6872 6873 Gen.g_dirfd = attropen(G_p->g_nam_p, ".", O_RDONLY); 6874 if (Gen.g_dirfd == -1) { 6875 msg(ERRN, "Cannot open attribute directory of file \"%s\"", 6876 G_p->g_nam_p); 6877 return; 6878 6879 } 6880 savenamep = G_p->g_nam_p; 6881 6882 if ((dirpfd = dup(Gen.g_dirfd)) == -1) { 6883 msg(ERRN, "Cannot dup(2) attribute directory descriptor"); 6884 return; 6885 } 6886 6887 if ((dirp = fdopendir(dirpfd)) == (DIR *)NULL) { 6888 msg(ERRN, "Cannot fdopendir(2) directory file descriptor"); 6889 return; 6890 } 6891 6892 while ((dp = readdir(dirp)) != (struct dirent *)NULL) { 6893 if (strcmp(dp->d_name, "..") == 0) { 6894 continue; 6895 } 6896 6897 if (strcmp(dp->d_name, ".") == 0) { 6898 Hiddendir = 1; 6899 } else { 6900 Hiddendir = 0; 6901 } 6902 6903 Gen.g_attrnam_p = dp->d_name; 6904 6905 if (STAT(Gen.g_dirfd, Gen.g_nam_p, &SrcSt) == -1) { 6906 msg(ERRN, 6907 "Could not fstatat(2) attribute \"%s\" of" 6908 " file \"%s\"", dp->d_name, savenamep); 6909 continue; 6910 } 6911 6912 if (Use_old_stat) { 6913 OldSt = convert_to_old_stat(&SrcSt, 6914 Gen.g_nam_p, Gen.g_attrnam_p); 6915 6916 if (OldSt == NULL) { 6917 msg(ERRN, 6918 "Could not convert to old stat format"); 6919 continue; 6920 } 6921 } 6922 6923 Gen.g_attrfnam_p = savenamep; 6924 6925 /* 6926 * Set up dummy header name 6927 * 6928 * One piece is written with .hdr, which 6929 * contains the actual xattr hdr or pathing information 6930 * then the name is updated to drop the .hdr off 6931 * and the actual file itself is archived. 6932 */ 6933 slen = strlen(Gen.g_attrnam_p) + strlen(DEVNULL) + 6934 strlen(XATTRHDR) + 1; 6935 if ((namep = e_zalloc(E_NORMAL, slen)) == (char *)NULL) { 6936 msg(ERRN, "Could not calloc memory for attribute name"); 6937 continue; 6938 } 6939 (void) sprintf(namep, "%s/%s%s", 6940 DEVNULL, Gen.g_attrnam_p, XATTRHDR); 6941 Gen.g_nam_p = namep; 6942 6943 /* 6944 * Get attribute's ACL info: don't bother allocating space 6945 * if there are only standard permissions, i.e. ACL count < 4 6946 */ 6947 if (Pflag) { 6948 filefd = openat(Gen.g_dirfd, dp->d_name, O_RDONLY); 6949 if (filefd == -1) { 6950 msg(ERRN, 6951 "Could not open attribute \"%s\" of" 6952 " file \"%s\"", dp->d_name, savenamep); 6953 free(namep); 6954 continue; 6955 } 6956 if (facl_get(filefd, ACL_NO_TRIVIAL, &aclp) != 0) { 6957 msg(ERRN, 6958 "Error with acl() on %s", 6959 Gen.g_nam_p); 6960 } 6961 (void) close(filefd); 6962 } 6963 (void) creat_hdr(); 6964 (void) (*func)(); 6965 if (Gen.g_passdirfd != -1) { 6966 (void) close(Gen.g_passdirfd); 6967 Gen.g_passdirfd = -1; 6968 } 6969 Gen.g_attrnam_p = (char *)NULL; 6970 Gen.g_attrfnam_p = (char *)NULL; 6971 Gen.g_linktoattrfnam_p = (char *)NULL; 6972 Gen.g_linktoattrnam_p = (char *)NULL; 6973 if (aclp != NULL) { 6974 acl_free(aclp); 6975 aclp = NULL; 6976 acl_is_set = 0; 6977 } 6978 free(namep); 6979 } 6980 6981 (void) closedir(dirp); 6982 (void) close(Gen.g_dirfd); 6983 Gen.g_dirfd = -1; 6984 } 6985 #else 6986 static void 6987 xattrs_out(int (*func)()) 6988 { 6989 } 6990 #endif 6991 6992 /* 6993 * Return the parent directory of a given path. 6994 * 6995 * Examples: 6996 * /usr/tmp return /usr 6997 * /usr/tmp/file return /usr/tmp 6998 * / returns . 6999 * /usr returns / 7000 * file returns . 7001 * 7002 * dir is assumed to be at least as big as path. 7003 */ 7004 static void 7005 get_parent(char *path, char *dir) 7006 { 7007 char *s; 7008 char tmpdir[PATH_MAX + 1]; 7009 7010 if (strlen(path) > PATH_MAX) { 7011 msg(EXT, "pathname is too long"); 7012 } 7013 (void) strcpy(tmpdir, path); 7014 chop_endslashes(tmpdir); 7015 7016 if ((s = strrchr(tmpdir, '/')) == NULL) { 7017 (void) strcpy(dir, "."); 7018 } else { 7019 s = skipslashes(s, tmpdir); 7020 *s = '\0'; 7021 if (s == tmpdir) 7022 (void) strcpy(dir, "/"); 7023 else 7024 (void) strcpy(dir, tmpdir); 7025 } 7026 } 7027 7028 #if defined(O_XATTR) 7029 #define ROUNDTOTBLOCK(a) ((a + (TBLOCK -1)) & ~(TBLOCK -1)) 7030 7031 static void 7032 prepare_xattr_hdr( 7033 char **attrbuf, 7034 char *filename, 7035 char *attrname, 7036 char typeflag, 7037 struct Lnk *linkinfo, 7038 int *rlen) 7039 { 7040 char *bufhead; /* ptr to full buffer */ 7041 struct xattr_hdr *hptr; /* ptr to header in bufhead */ 7042 struct xattr_buf *tptr; /* ptr to pathing pieces */ 7043 int totalen; /* total buffer length */ 7044 int len; /* length returned to user */ 7045 int stringlen; /* length of filename + attr */ 7046 int linkstringlen; /* ditto in link section */ 7047 int complen; /* length of pathing section */ 7048 int linklen; /* length of link section */ 7049 7050 7051 /* 7052 * Release previous buffer if any. 7053 */ 7054 7055 if (*attrbuf != (char *)NULL) { 7056 free(*attrbuf); 7057 *attrbuf = NULL; 7058 } 7059 7060 /* 7061 * First add in fixed size stuff 7062 */ 7063 len = sizeof (struct xattr_hdr) + sizeof (struct xattr_buf); 7064 7065 /* 7066 * Add space for two nulls 7067 */ 7068 stringlen = strlen(attrname) + strlen(filename) + 2; 7069 complen = stringlen + sizeof (struct xattr_buf); 7070 7071 len += stringlen; 7072 7073 /* 7074 * Now add on space for link info if any 7075 */ 7076 7077 if (linkinfo != NULL) { 7078 /* 7079 * Again add space for two nulls 7080 */ 7081 linkstringlen = strlen(linkinfo->L_gen.g_attrfnam_p) + 7082 strlen(linkinfo->L_gen.g_attrnam_p) + 2; 7083 len += linkstringlen; 7084 } 7085 7086 /* 7087 * Now add padding to end to fill out TBLOCK 7088 * 7089 * Function returns size of real data and not size + padding. 7090 */ 7091 7092 totalen = ROUNDTOTBLOCK(len); 7093 bufhead = e_zalloc(E_EXIT, totalen); 7094 7095 /* 7096 * Now we can fill in the necessary pieces 7097 */ 7098 7099 if (linkinfo != (struct Lnk *)NULL) { 7100 linklen = linkstringlen + (sizeof (struct xattr_buf)); 7101 } else { 7102 linklen = 0; 7103 } 7104 7105 /* 7106 * first fill in the fixed header 7107 */ 7108 hptr = (struct xattr_hdr *)bufhead; 7109 (void) sprintf(hptr->h_version, "%s", XATTR_ARCH_VERS); 7110 (void) sprintf(hptr->h_component_len, "%0*d", 7111 sizeof (hptr->h_component_len) - 1, complen); 7112 (void) sprintf(hptr->h_link_component_len, "%0*d", 7113 sizeof (hptr->h_link_component_len) - 1, linklen); 7114 (void) sprintf(hptr->h_size, "%0*d", sizeof (hptr->h_size) - 1, len); 7115 7116 /* 7117 * Now fill in the filename + attrnames section 7118 */ 7119 7120 tptr = (struct xattr_buf *)(bufhead + sizeof (struct xattr_hdr)); 7121 (void) sprintf(tptr->h_namesz, "%0*d", sizeof (tptr->h_namesz) - 1, 7122 stringlen); 7123 (void) strcpy(tptr->h_names, filename); 7124 (void) strcpy(&tptr->h_names[strlen(filename) + 1], attrname); 7125 tptr->h_typeflag = typeflag; 7126 7127 /* 7128 * Now fill in the optional link section if we have one 7129 */ 7130 7131 if (linkinfo != (struct Lnk *)NULL) { 7132 tptr = (struct xattr_buf *)(bufhead + 7133 sizeof (struct xattr_hdr) + complen); 7134 7135 (void) sprintf(tptr->h_namesz, "%0*d", 7136 sizeof (tptr->h_namesz) - 1, linkstringlen); 7137 (void) strcpy(tptr->h_names, linkinfo->L_gen.g_attrfnam_p); 7138 (void) strcpy( 7139 &tptr->h_names[strlen(linkinfo->L_gen.g_attrfnam_p) + 1], 7140 linkinfo->L_gen.g_attrnam_p); 7141 tptr->h_typeflag = typeflag; 7142 } 7143 *attrbuf = (char *)bufhead; 7144 *rlen = len; 7145 } 7146 #endif /* O_XATTR */ 7147 7148 static char 7149 tartype(int type) 7150 { 7151 switch (type) { 7152 7153 case S_IFDIR: 7154 return (DIRTYPE); 7155 7156 case S_IFLNK: 7157 return (SYMTYPE); 7158 7159 case S_IFIFO: 7160 return (FIFOTYPE); 7161 7162 case S_IFCHR: 7163 return (CHRTYPE); 7164 7165 case S_IFBLK: 7166 return (BLKTYPE); 7167 7168 case S_IFREG: 7169 return (REGTYPE); 7170 7171 default: 7172 return ('\0'); 7173 } 7174 } 7175 7176 #if defined(O_XATTR) 7177 static int 7178 openfile(int omode) 7179 { 7180 7181 if (G_p->g_attrnam_p != (char *)NULL) { 7182 return (attropen(G_p->g_attrfnam_p, G_p->g_attrnam_p, omode)); 7183 } else { 7184 return (openat(G_p->g_dirfd, 7185 get_component(G_p->g_nam_p), omode)); 7186 } 7187 } 7188 #else 7189 static int 7190 openfile(int omode) 7191 { 7192 return (openat(G_p->g_dirfd, get_component(G_p->g_nam_p), omode)); 7193 } 7194 #endif 7195 7196 #if defined(O_XATTR) 7197 static int 7198 read_xattr_hdr() 7199 { 7200 off_t bytes; 7201 int comp_len, link_len; 7202 int namelen; 7203 int cnt; 7204 char *tp; 7205 int pad; 7206 7207 /* 7208 * Include any padding in the read. We need to be positioned 7209 * at beginning of next header. 7210 */ 7211 7212 bytes = Gen.g_filesz; 7213 7214 if ((xattrhead = e_zalloc(E_NORMAL, (size_t)bytes)) == NULL) { 7215 (void) fprintf(stderr, gettext( 7216 "Insufficient memory for extended attribute\n")); 7217 return (1); 7218 } 7219 7220 tp = (char *)xattrhead; 7221 while (bytes > 0) { 7222 cnt = (int)(bytes > CPIOBSZ) ? CPIOBSZ : bytes; 7223 FILL(cnt); 7224 (void) memcpy(tp, Buffr.b_out_p, cnt); 7225 tp += cnt; 7226 Buffr.b_out_p += cnt; 7227 Buffr.b_cnt -= (off_t)cnt; 7228 bytes -= (off_t)cnt; 7229 } 7230 7231 pad = (Pad_val + 1 - (Gen.g_filesz & Pad_val)) & 7232 Pad_val; 7233 if (pad != 0) { 7234 FILL(pad); 7235 Buffr.b_out_p += pad; 7236 Buffr.b_cnt -= (off_t)pad; 7237 } 7238 7239 /* 7240 * Validate that we can handle header format 7241 */ 7242 7243 if (strcmp(xattrhead->h_version, XATTR_ARCH_VERS) != 0) { 7244 (void) fprintf(stderr, 7245 gettext("Unknown extended attribute format encountered\n")); 7246 (void) fprintf(stderr, 7247 gettext("Disabling extended attribute header parsing\n")); 7248 xattrbadhead = 1; 7249 return (1); 7250 } 7251 (void) sscanf(xattrhead->h_component_len, "%10d", &comp_len); 7252 (void) sscanf(xattrhead->h_link_component_len, "%10d", &link_len); 7253 xattrp = (struct xattr_buf *)(((char *)xattrhead) + 7254 sizeof (struct xattr_hdr)); 7255 (void) sscanf(xattrp->h_namesz, "%7d", &namelen); 7256 if (link_len > 0) { 7257 xattr_linkp = (struct xattr_buf *)((int)xattrp + (int)comp_len); 7258 } else { 7259 xattr_linkp = NULL; 7260 } 7261 7262 return (0); 7263 } 7264 #endif 7265 7266 static mode_t 7267 attrmode(char type) 7268 { 7269 mode_t mode; 7270 7271 switch (type) { 7272 case '\0': 7273 case REGTYPE: 7274 case LNKTYPE: 7275 mode = S_IFREG; 7276 break; 7277 7278 case SYMTYPE: 7279 mode = S_IFLNK; 7280 break; 7281 7282 case CHRTYPE: 7283 mode = S_IFCHR; 7284 break; 7285 case BLKTYPE: 7286 mode = S_IFBLK; 7287 break; 7288 case DIRTYPE: 7289 mode = S_IFDIR; 7290 break; 7291 case FIFOTYPE: 7292 mode = S_IFIFO; 7293 break; 7294 case CONTTYPE: 7295 default: 7296 mode = 0; 7297 } 7298 7299 return (mode); 7300 } 7301 7302 #if defined(O_XATTR) 7303 static char * 7304 get_component(char *path) 7305 { 7306 char *ptr; 7307 7308 ptr = strrchr(path, '/'); 7309 if (ptr == NULL) { 7310 return (path); 7311 } else { 7312 /* 7313 * Handle trailing slash 7314 */ 7315 if (*(ptr + 1) == '\0') 7316 return (ptr); 7317 else 7318 return (ptr + 1); 7319 } 7320 } 7321 #else 7322 static char * 7323 get_component(char *path) 7324 { 7325 return (path); 7326 } 7327 #endif 7328 7329 static int 7330 open_dir(char *name) 7331 { 7332 int fd = -1; 7333 int cnt = 0; 7334 char *dir; 7335 7336 dir = e_zalloc(E_EXIT, strlen(name) + 1); 7337 7338 /* 7339 * open directory; creating missing directories along the way. 7340 */ 7341 get_parent(name, dir); 7342 do { 7343 fd = open(dir, O_RDONLY); 7344 if (fd != -1) { 7345 free(dir); 7346 return (fd); 7347 } 7348 cnt++; 7349 } while (cnt <= 1 && missdir(name) == 0); 7350 7351 free(dir); 7352 return (-1); 7353 } 7354 7355 static int 7356 open_dirfd() 7357 { 7358 #ifdef O_XATTR 7359 if ((Args & OCt) == 0) { 7360 close_dirfd(); 7361 if (G_p->g_attrnam_p != (char *)NULL) { 7362 G_p->g_dirfd = attropen(G_p->g_attrfnam_p, 7363 ".", O_RDONLY); 7364 if (G_p->g_dirfd == -1 && (Args & (OCi | OCp))) { 7365 G_p->g_dirfd = 7366 retry_attrdir_open(G_p->g_attrfnam_p); 7367 if (G_p->g_dirfd == -1) { 7368 msg(ERRN, 7369 "Cannot open attribute" 7370 " directory of file %s", 7371 G_p->g_attrfnam_p); 7372 return (1); 7373 } 7374 } 7375 } else { 7376 G_p->g_dirfd = open_dir(G_p->g_nam_p); 7377 if (G_p->g_dirfd == -1) { 7378 msg(ERRN, 7379 "Cannot open/create %s", G_p->g_nam_p); 7380 return (1); 7381 } 7382 } 7383 } else { 7384 G_p->g_dirfd = -1; 7385 } 7386 #else 7387 G_p->g_dirfd = -1; 7388 #endif 7389 return (0); 7390 } 7391 7392 static void 7393 close_dirfd() 7394 { 7395 if (G_p->g_dirfd != -1) { 7396 (void) close(G_p->g_dirfd); 7397 G_p->g_dirfd = -1; 7398 } 7399 } 7400 7401 static void 7402 write_xattr_hdr() 7403 { 7404 char *attrbuf = NULL; 7405 int attrlen = 0; 7406 char *namep; 7407 struct Lnk *tl_p, *linkinfo; 7408 7409 7410 /* 7411 * namep was allocated in xattrs_out. It is big enough to hold 7412 * either the name + .hdr on the end or just the attr name 7413 */ 7414 7415 #if defined(O_XATTR) 7416 namep = Gen.g_nam_p; 7417 (void) creat_hdr(); 7418 7419 7420 if (Args & OCo) { 7421 linkinfo = NULL; 7422 tl_p = Lnk_hd.L_nxt_p; 7423 while (tl_p != &Lnk_hd) { 7424 if (tl_p->L_gen.g_ino == G_p->g_ino && 7425 tl_p->L_gen.g_dev == G_p->g_dev) { 7426 linkinfo = tl_p; 7427 break; /* found */ 7428 } 7429 tl_p = tl_p->L_nxt_p; 7430 } 7431 prepare_xattr_hdr(&attrbuf, Gen.g_attrfnam_p, 7432 Gen.g_attrnam_p, 7433 (linkinfo == (struct Lnk *)NULL) ? 7434 tartype(Gen.g_mode & Ftype) : LNKTYPE, 7435 linkinfo, &attrlen); 7436 Gen.g_filesz = attrlen; 7437 write_hdr(ARCHIVE_XATTR, (off_t)attrlen); 7438 (void) sprintf(namep, "%s/%s", DEVNULL, Gen.g_attrnam_p); 7439 (void) write_ancillary(attrbuf, attrlen); 7440 } 7441 7442 (void) creat_hdr(); 7443 #endif 7444 } 7445 7446 static int 7447 retry_attrdir_open(char *name) 7448 { 7449 int dirfd = -1; 7450 struct timeval times[2]; 7451 mode_t newmode; 7452 struct stat parentstat; 7453 acl_t *aclp = NULL; 7454 int error; 7455 7456 /* 7457 * We couldn't get to attrdir. See if its 7458 * just a mode problem on the parent file. 7459 * for example: a mode such as r-xr--r-- 7460 * won't let us create an attribute dir 7461 * if it doesn't already exist. 7462 * 7463 * If file has a non-trivial ACL, then save it 7464 * off so that we can place it back on after doing 7465 * chmod's. 7466 */ 7467 7468 if (stat(name, &parentstat) == -1) { 7469 msg(ERRN, "Cannot stat file %s", name); 7470 return (-1); 7471 } 7472 7473 if ((error = acl_get(name, ACL_NO_TRIVIAL, &aclp)) != 0) { 7474 msg(ERRN, 7475 "Failed to retrieve ACL on %s %s", name, strerror(errno)); 7476 return (-1); 7477 } 7478 7479 newmode = S_IWUSR | parentstat.st_mode; 7480 if (chmod(name, newmode) == -1) { 7481 msg(ERRN, "Cannot change mode of file %s to %o", name, newmode); 7482 if (aclp) 7483 acl_free(aclp); 7484 return (-1); 7485 } 7486 7487 dirfd = attropen(name, ".", O_RDONLY); 7488 7489 /* 7490 * Don't print error here, caller will handle printing out 7491 * can't open message. 7492 */ 7493 7494 /* 7495 * Put mode back to original 7496 */ 7497 if (chmod(name, parentstat.st_mode) != 0) { 7498 msg(ERRN, "Cannot restore permissions of file %s to %o", 7499 name, parentstat.st_mode); 7500 } 7501 7502 if (aclp) { 7503 error = acl_set(name, aclp); 7504 if (error) { 7505 msg(ERRN, "failed to set ACL on %s", name); 7506 } 7507 acl_free(aclp); 7508 } 7509 /* 7510 * Put back time stamps 7511 */ 7512 7513 times[0].tv_sec = parentstat.st_atime; 7514 times[0].tv_usec = 0; 7515 times[1].tv_sec = parentstat.st_mtime; 7516 times[1].tv_usec = 0; 7517 if (utimes(name, times) != 0) { 7518 msg(ERRN, "Cannot reset timestamps on file %s"); 7519 } 7520 7521 return (dirfd); 7522 } 7523 7524 /* 7525 * skip over extra slashes in string. 7526 * 7527 * For example: 7528 * /usr/tmp///// 7529 * 7530 * would return pointer at 7531 * /usr/tmp///// 7532 * ^ 7533 */ 7534 static char * 7535 skipslashes(char *string, char *start) 7536 { 7537 while ((string > start) && *(string - 1) == '/') { 7538 string--; 7539 } 7540 7541 return (string); 7542 } 7543 7544 static sl_info_t * 7545 sl_info_alloc(void) 7546 { 7547 static int num_left; 7548 static sl_info_t *slipool; 7549 7550 if (num_left > 0) { 7551 return (&slipool[--num_left]); 7552 } 7553 num_left = SL_INFO_ALLOC_CHUNK; 7554 slipool = e_zalloc(E_EXIT, sizeof (sl_info_t) * num_left); 7555 return (&slipool[--num_left]); 7556 } 7557 7558 /* 7559 * If a match for the key values was found in the tree, return a pointer to it. 7560 * If a match was not found, insert it and return a pointer to it. This is 7561 * based on Knuth's Algorithm A in Vol 3, section 6.2.3. 7562 */ 7563 7564 sl_info_t * 7565 sl_insert(dev_t device, ino_t inode) 7566 { 7567 sl_info_t *p; /* moves down the tree */ 7568 sl_info_t *q; /* scratch */ 7569 sl_info_t *r; /* scratch */ 7570 sl_info_t *s; /* pt where rebalancing may be needed */ 7571 sl_info_t *t; /* father of s */ 7572 sl_info_t *head; 7573 7574 int a; /* used to hold balance factors */ 7575 int done; /* loop control */ 7576 int cmpflg; /* used to hold the result of a comparison */ 7577 7578 /* initialize */ 7579 7580 head = sl_devhash_lookup(device); 7581 7582 if (head == NULL) { 7583 head = sl_info_alloc(); 7584 head->llink = NULL; 7585 head->bal = 0; 7586 7587 p = head->rlink = sl_info_alloc(); 7588 p->sl_ino = inode; 7589 p->sl_count = 0; 7590 p->bal = 0; 7591 p->llink = NULL; 7592 p->rlink = NULL; 7593 sl_devhash_insert(device, head); 7594 return (p); 7595 } 7596 7597 t = head; 7598 s = p = head->rlink; 7599 7600 /* compare */ 7601 7602 for (done = 0; ! done; ) { 7603 switch (sl_compare(inode, p->sl_ino)) { 7604 case -1: 7605 /* move left */ 7606 7607 q = p->llink; 7608 7609 if (q == NULL) { 7610 q = sl_info_alloc(); 7611 p->llink = q; 7612 done = 1; 7613 continue; 7614 } 7615 7616 break; 7617 7618 case 0: 7619 /* found it */ 7620 return (p); 7621 break; 7622 7623 case 1: 7624 /* move right */ 7625 7626 q = p->rlink; 7627 7628 if (q == NULL) { 7629 q = sl_info_alloc(); 7630 p->rlink = q; 7631 done = 1; 7632 continue; 7633 } 7634 7635 break; 7636 } 7637 7638 if (q->bal != 0) { 7639 t = p; 7640 s = q; 7641 } 7642 7643 p = q; 7644 } 7645 7646 /* insert */ 7647 7648 q->sl_ino = inode; 7649 q->sl_count = 0; 7650 q->llink = q->rlink = NULL; 7651 q->bal = 0; 7652 7653 /* adjust balance factors */ 7654 7655 if ((cmpflg = sl_compare(inode, s->sl_ino)) < 0) { 7656 r = p = s->llink; 7657 } else { 7658 r = p = s->rlink; 7659 } 7660 7661 while (p != q) { 7662 switch (sl_compare(inode, p->sl_ino)) { 7663 case -1: 7664 p->bal = -1; 7665 p = p->llink; 7666 break; 7667 7668 case 0: 7669 break; 7670 7671 case 1: 7672 p->bal = 1; 7673 p = p->rlink; 7674 break; 7675 } 7676 } 7677 7678 /* balancing act */ 7679 7680 if (cmpflg < 0) { 7681 a = -1; 7682 } else { 7683 a = 1; 7684 } 7685 7686 if (s->bal == 0) { 7687 s->bal = a; 7688 head->llink = (sl_info_t *)((int)head->llink + 1); 7689 return (q); 7690 } else if (s->bal == -a) { 7691 s->bal = 0; 7692 return (q); 7693 } 7694 7695 /* 7696 * (s->bal == a) 7697 */ 7698 7699 if (r->bal == a) { 7700 /* single rotation */ 7701 7702 p = r; 7703 7704 if (a == -1) { 7705 s->llink = r->rlink; 7706 r->rlink = s; 7707 } else if (a == 1) { 7708 s->rlink = r->llink; 7709 r->llink = s; 7710 } 7711 7712 s->bal = r->bal = 0; 7713 7714 } else if (r->bal == -a) { 7715 /* double rotation */ 7716 7717 if (a == -1) { 7718 p = r->rlink; 7719 r->rlink = p->llink; 7720 p->llink = r; 7721 s->llink = p->rlink; 7722 p->rlink = s; 7723 } else if (a == 1) { 7724 p = r->llink; 7725 r->llink = p->rlink; 7726 p->rlink = r; 7727 s->rlink = p->llink; 7728 p->llink = s; 7729 } 7730 7731 if (p->bal == 0) { 7732 s->bal = 0; 7733 r->bal = 0; 7734 } else if (p->bal == -a) { 7735 s->bal = 0; 7736 r->bal = a; 7737 } else if (p->bal == a) { 7738 s->bal = -a; 7739 r->bal = 0; 7740 } 7741 7742 p->bal = 0; 7743 } 7744 7745 /* finishing touch */ 7746 7747 if (s == t->rlink) { 7748 t->rlink = p; 7749 } else { 7750 t->llink = p; 7751 } 7752 7753 return (q); 7754 } 7755 7756 /* 7757 * sl_numlinks: return the number of links that we saw during our preview. 7758 */ 7759 7760 static ulong_t 7761 sl_numlinks(dev_t device, ino_t inode) 7762 { 7763 sl_info_t *p = sl_search(device, inode); 7764 7765 if (p) { 7766 return (p->sl_count); 7767 } else { 7768 return (1); 7769 } 7770 } 7771 7772 /* 7773 * sl_preview_synonyms: Read the file list from the input stream, remembering 7774 * each reference to each file. 7775 */ 7776 7777 static void 7778 sl_preview_synonyms(void) 7779 { 7780 char buf [APATH+1]; 7781 char *s; 7782 7783 char *suffix = "/cpioXXXXXX"; 7784 char *tmpdir = getenv("TMPDIR"); 7785 int tmpfd, islnk; 7786 FILE *tmpfile; 7787 char *tmpfname; 7788 7789 if (tmpdir == NULL || *tmpdir == '\0' || 7790 (strlen(tmpdir) + strlen(suffix)) > APATH) { 7791 struct statvfs tdsb; 7792 7793 tmpdir = "/var/tmp"; 7794 7795 /* /var/tmp is read-only in the mini-root environment */ 7796 7797 if (statvfs(tmpdir, &tdsb) == -1 || tdsb.f_flag & ST_RDONLY) { 7798 tmpdir = "/tmp"; 7799 } 7800 } 7801 7802 tmpfname = e_zalloc(E_EXIT, strlen(tmpdir) + strlen(suffix) + 1); 7803 7804 (void) strcpy(tmpfname, tmpdir); 7805 (void) strcat(tmpfname, suffix); 7806 7807 if ((tmpfd = mkstemp(tmpfname)) == -1) { 7808 msg(EXTN, "cannot open tmpfile %s", tmpfname); 7809 } 7810 7811 if (unlink(tmpfname) == -1) { 7812 msg(EXTN, "cannot unlink tmpfile %s", tmpfname); 7813 } 7814 7815 if ((tmpfile = fdopen(tmpfd, "w+")) == NULL) { 7816 msg(EXTN, "cannot fdopen tmpfile %s", tmpfname); 7817 } 7818 7819 while ((s = fgets(buf, APATH+1, In_p)) != NULL) { 7820 size_t lastchar; 7821 struct stat sb; 7822 7823 if (fputs(buf, tmpfile) == EOF) { 7824 msg(EXTN, "problem writing to tmpfile %s", tmpfname); 7825 } 7826 7827 /* pre-process the name */ 7828 7829 lastchar = strlen(s) - 1; 7830 7831 if (s[lastchar] != '\n' && lastchar == APATH - 1) { 7832 continue; 7833 } else { 7834 s[lastchar] = '\0'; 7835 } 7836 7837 while (s[0] == '.' && s[1] == '/') { 7838 s += 2; 7839 while (s[0] == '/') { 7840 s++; 7841 } 7842 } 7843 7844 if (lstat(s, &sb) < 0) { 7845 continue; 7846 } 7847 islnk = 0; 7848 if (S_ISLNK(sb.st_mode)) { 7849 islnk = 1; 7850 if (Args & OCL) { 7851 if (stat(s, &sb) < 0) { 7852 continue; 7853 } 7854 } 7855 } 7856 sl_remember_tgt(&sb, islnk); 7857 7858 #if defined(O_XATTR) 7859 if (Atflag) { 7860 int dirfd; 7861 DIR *dirp; 7862 struct dirent *dp; 7863 7864 if (pathconf(s, _PC_XATTR_EXISTS) != 1) 7865 continue; 7866 7867 dirfd = attropen(s, ".", O_RDONLY); 7868 if (dirfd == -1) 7869 continue; 7870 7871 tmpfd = dup(dirfd); 7872 if (tmpfd == -1) { 7873 (void) close(dirfd); 7874 continue; 7875 } 7876 dirp = fdopendir(tmpfd); 7877 if (dirp == NULL) { 7878 (void) close(dirfd); 7879 (void) close(tmpfd); 7880 continue; 7881 } 7882 7883 while (dp = readdir(dirp)) { 7884 if ((dp->d_name[0] == '.' && 7885 dp->d_name[1] == '\0') || 7886 (dp->d_name[0] == '.' && 7887 dp->d_name[1] == '.' && 7888 dp->d_name[2] == '\0')) 7889 continue; 7890 7891 if (fstatat(dirfd, dp->d_name, &sb, 7892 AT_SYMLINK_NOFOLLOW) < 0) { 7893 continue; 7894 } 7895 islnk = 0; 7896 if (S_ISLNK(sb.st_mode)) { 7897 islnk = 1; 7898 if (Args & OCL) { 7899 if (fstatat(dirfd, dp->d_name, 7900 &sb, 0) < 0) { 7901 continue; 7902 } 7903 } 7904 } 7905 sl_remember_tgt(&sb, islnk); 7906 } 7907 (void) closedir(dirp); 7908 (void) close(dirfd); 7909 } 7910 #endif 7911 } 7912 7913 if (ferror(In_p)) { 7914 msg(EXTN, "error reading stdin"); 7915 } 7916 7917 if (fseek(tmpfile, 0L, SEEK_SET) == -1) { 7918 msg(EXTN, "cannot fseek on tmpfile %s", tmpfname); 7919 } 7920 7921 In_p = tmpfile; 7922 free(tmpfname); 7923 } 7924 7925 /* 7926 * sl_remember_tgt: Add the device/inode for lstat or stat info to the list of 7927 * those we've seen before. 7928 * 7929 * This tree (rooted under head) is keyed by the device/inode of the file 7930 * being pointed to. A count is kept of the number of references encountered 7931 * so far. 7932 */ 7933 7934 static void 7935 sl_remember_tgt(const struct stat *sbp, int isSymlink) 7936 { 7937 sl_info_t *p; 7938 dev_t device; 7939 ino_t inode; 7940 7941 device = sbp->st_dev; 7942 inode = sbp->st_ino; 7943 7944 /* Determine whether we've seen this one before */ 7945 7946 p = sl_insert(device, inode); 7947 7948 if (p->sl_count > 0) { 7949 /* 7950 * We have seen this file before. 7951 * Note that if we are not chasing symlinks, and this one is a 7952 * symlink, it is identically the one we saw before (you cannot 7953 * have hard links to symlinks); in this case, we leave the 7954 * count alone, so that we don't wind up archiving a symlink to 7955 * itself. 7956 */ 7957 7958 if ((Args & OCL) || (! isSymlink)) { 7959 p->sl_count++; 7960 } 7961 } else { 7962 /* We have not seen this file before */ 7963 7964 p->sl_count = 1; 7965 7966 if (Use_old_stat) { 7967 /* -Hodc: remap inode (-1 on overflow) */ 7968 7969 sl_remap_t *q; 7970 7971 for (q = sl_remap_head; q && (q->dev != device); 7972 q = q->next) { 7973 /* do nothing */ 7974 } 7975 7976 if (q == NULL) { 7977 q = e_zalloc(E_EXIT, sizeof (sl_remap_t)); 7978 q->dev = device; 7979 p->sl_ino2 = q->inode_count = 1; 7980 7981 q->next = (sl_remap_head) ? 7982 sl_remap_head->next : NULL; 7983 sl_remap_head = q; 7984 } else { 7985 if ((size_t)q->inode_count <= 7986 ((1 << (sizeof (o_ino_t) * 8)) - 1)) { 7987 /* fits in o_ino_t */ 7988 p->sl_ino2 = ++(q->inode_count); 7989 } else { 7990 p->sl_ino2 = (ino_t)-1; 7991 } 7992 } 7993 } 7994 } 7995 } 7996 7997 /* 7998 * A faster search, which does not insert the key values into the tree. 7999 * If the a match was found in the tree, return a pointer to it. If it was not 8000 * found, return NULL. 8001 */ 8002 8003 sl_info_t * 8004 sl_search(dev_t device, ino_t inode) 8005 { 8006 sl_info_t *p; /* moves down the tree */ 8007 int c; /* comparison value */ 8008 sl_info_t *retval = NULL; /* return value */ 8009 sl_info_t *head; 8010 8011 head = sl_devhash_lookup(device); 8012 if (head != NULL) { 8013 for (p = head->rlink; p; ) { 8014 if ((c = sl_compare(inode, p->sl_ino)) == 0) { 8015 retval = p; 8016 break; 8017 } else if (c < 0) { 8018 p = p->llink; 8019 } else { 8020 p = p->rlink; 8021 } 8022 } 8023 } 8024 8025 return (retval); 8026 } 8027 8028 static sl_info_t * 8029 sl_devhash_lookup(dev_t device) 8030 { 8031 int key; 8032 sl_info_link_t *lp; 8033 static sl_info_link_t *devcache; 8034 8035 if (devcache != NULL && devcache->dev == device) { 8036 return (devcache->head); 8037 } 8038 8039 key = DEV_HASHKEY(device); 8040 for (lp = sl_devhash[key]; lp; lp = lp->next) { 8041 if (lp->dev == device) { 8042 devcache = lp; 8043 return (lp->head); 8044 } 8045 } 8046 return (NULL); 8047 } 8048 8049 static void 8050 sl_devhash_insert(dev_t device, sl_info_t *head) 8051 { 8052 int key = DEV_HASHKEY(device); 8053 sl_info_link_t *lp; 8054 8055 lp = e_zalloc(E_EXIT, sizeof (sl_info_link_t)); 8056 lp->dev = device; 8057 lp->head = head; 8058 lp->next = sl_devhash[key]; 8059 sl_devhash[key] = lp; 8060 } 8061 8062 static void 8063 chop_endslashes(char *path) 8064 { 8065 char *end, *ptr; 8066 8067 end = &path[strlen(path) -1]; 8068 if (*end == '/' && end != path) { 8069 ptr = skipslashes(end, path); 8070 if (ptr != NULL && ptr != path) { 8071 *ptr = '\0'; 8072 } 8073 } 8074 } 8075 8076 #if !defined(O_XATTR) 8077 int 8078 openat64(int fd, char *name, int oflag, mode_t cmode) 8079 { 8080 return (open64(name, oflag, cmode)); 8081 } 8082 8083 int 8084 openat(int fd, char *name, int oflag, mode_t cmode) 8085 { 8086 return (open(name, oflag, cmode)); 8087 } 8088 8089 int 8090 fchownat(int fd, char *name, uid_t owner, gid_t group, int flag) 8091 { 8092 if (flag == AT_SYMLINK_NOFOLLOW) 8093 return (lchown(name, owner, group)); 8094 else 8095 return (chown(name, owner, group)); 8096 } 8097 8098 int 8099 renameat(int fromfd, char *old, int tofd, char *new) 8100 { 8101 return (rename(old, new)); 8102 } 8103 8104 int 8105 futimesat(int fd, char *path, struct timeval times[2]) 8106 { 8107 return (utimes(path, times)); 8108 } 8109 8110 int 8111 unlinkat(int dirfd, char *path, int flag) 8112 { 8113 if (flag == AT_REMOVEDIR) { 8114 return (rmdir(path)); 8115 } else { 8116 return (unlink(path)); 8117 } 8118 } 8119 8120 int 8121 fstatat(int fd, char *path, struct stat *buf, int flag) 8122 { 8123 if (flag == AT_SYMLINK_NOFOLLOW) 8124 return (lstat(path, buf)); 8125 else 8126 return (stat(path, buf)); 8127 } 8128 8129 int 8130 attropen(char *file, char *attr, int omode, mode_t cmode) 8131 { 8132 errno = ENOTSUP; 8133 return (-1); 8134 } 8135 #endif 8136