17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate * CDDL HEADER START
37c478bd9Sstevel@tonic-gate *
47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the
59d6538abSab * Common Development and Distribution License (the "License").
69d6538abSab * You may not use this file except in compliance with the License.
77c478bd9Sstevel@tonic-gate *
87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions
117c478bd9Sstevel@tonic-gate * and limitations under the License.
127c478bd9Sstevel@tonic-gate *
137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
187c478bd9Sstevel@tonic-gate *
197c478bd9Sstevel@tonic-gate * CDDL HEADER END
207c478bd9Sstevel@tonic-gate */
21ba7866cdSAli Bahrami
227c478bd9Sstevel@tonic-gate /*
23ba7866cdSAli Bahrami * Copyright (c) 1995, 2010, Oracle and/or its affiliates. All rights reserved.
24*11029d9dSRobert Mustacchi * Copyright 2022 Oxide Computer Company
257c478bd9Sstevel@tonic-gate */
267c478bd9Sstevel@tonic-gate
277c478bd9Sstevel@tonic-gate /*
287c478bd9Sstevel@tonic-gate * Copyright (c) 1988 AT&T
297c478bd9Sstevel@tonic-gate * All Rights Reserved
307c478bd9Sstevel@tonic-gate *
317c478bd9Sstevel@tonic-gate */
327c478bd9Sstevel@tonic-gate
33ba7866cdSAli Bahrami #include <sys/sendfile.h>
347c478bd9Sstevel@tonic-gate #include "inc.h"
35ba7866cdSAli Bahrami #include "gelf.h"
36ba7866cdSAli Bahrami
37ba7866cdSAli Bahrami /*
38ba7866cdSAli Bahrami * List of archive members, accessed globally by cmd and file.
39ba7866cdSAli Bahrami */
40ba7866cdSAli Bahrami ARFILE *listhead, *listend;
41ba7866cdSAli Bahrami
42ba7866cdSAli Bahrami /*
43ba7866cdSAli Bahrami * Type used to manage string tables. Archives can have two of these:
44ba7866cdSAli Bahrami *
45ba7866cdSAli Bahrami * sym_strtbl: String table included at the end of the symbol table
46ba7866cdSAli Bahrami * archive member, following the offset array.
47ba7866cdSAli Bahrami *
48ba7866cdSAli Bahrami * long_strtbl: String table used to hold member names that exceed 15
49ba7866cdSAli Bahrami * characters in length, found in the long names archive member.
50ba7866cdSAli Bahrami */
51ba7866cdSAli Bahrami typedef struct {
52ba7866cdSAli Bahrami char *base; /* Base of string table memory */
53ba7866cdSAli Bahrami size_t used; /* # bytes used from allocation */
54ba7866cdSAli Bahrami size_t size; /* Size of allocation */
55ba7866cdSAli Bahrami } ARSTRTBL;
567c478bd9Sstevel@tonic-gate
57ba7866cdSAli Bahrami static ARSTRTBL sym_strtbl;
58ba7866cdSAli Bahrami static ARSTRTBL long_strtbl;
597c478bd9Sstevel@tonic-gate
607c478bd9Sstevel@tonic-gate
61ba7866cdSAli Bahrami /*
62ba7866cdSAli Bahrami * Name and file descriptor used when creating a new archive.
63ba7866cdSAli Bahrami * If this variable references an open file when exit_cleanup()
64ba7866cdSAli Bahrami * executes, it will close and remove the file, preventing incomplete
65ba7866cdSAli Bahrami * temporary files from being left behind in the case of a failure
66ba7866cdSAli Bahrami * or interruption.
67ba7866cdSAli Bahrami */
68ba7866cdSAli Bahrami static struct {
69ba7866cdSAli Bahrami int fd; /* -1, or open file descriptor */
70ba7866cdSAli Bahrami const char *path; /* Path to open file */
71ba7866cdSAli Bahrami } ar_outfile;
72ba7866cdSAli Bahrami
739d6538abSab /*
749d6538abSab * The ar file format requires objects to be padded to an even size.
759d6538abSab * We do that, but it turns out to be beneficial to go farther.
769d6538abSab *
779d6538abSab * ld(1) accesses archives by mmapping them into memory. If the mapped
78ba7866cdSAli Bahrami * objects (member data) have the proper alignment, we can access them
79ba7866cdSAli Bahrami * directly. If the data alignment is wrong, libelf "slides" them over the
80ba7866cdSAli Bahrami * archive header to correct the misalignment. This is expensive in time
81ba7866cdSAli Bahrami * (to copy memory) and space (it causes swap to be allocated by the system
82ba7866cdSAli Bahrami * to back the now-modified pages). Hence, we really want to ensure that
83ba7866cdSAli Bahrami * the alignment is right.
849d6538abSab *
859d6538abSab * We used to align 32-bit objects at 4-byte boundaries, and 64-bit objects
869d6538abSab * at 8-byte. More recently, an elf section type has appeared that has
879d6538abSab * 8-byte alignment requirements (SUNW_move) even in 32-bit objects. So,
889d6538abSab * the current strategy is to align all objects to 8-bytes.
899d6538abSab *
909d6538abSab * There are two important things to consider when setting this value:
919d6538abSab * 1) If a new elf section that ld(1) accesses in memory appears
929d6538abSab * with a greater than 8-byte alignment requirement, this value
939d6538abSab * will need to be raised. Or, alternatively, the entire approach may
949d6538abSab * need reconsideration.
959d6538abSab * 2) The size of this padding must be smaller than the size of the
969d6538abSab * smallest possible ELF section. Otherwise, the logic contained
979d6538abSab * in recover_padding() can be tricked.
989d6538abSab */
999d6538abSab #define PADSZ 8
1009d6538abSab
1017c478bd9Sstevel@tonic-gate /*
102ba7866cdSAli Bahrami * Forward Declarations
1037c478bd9Sstevel@tonic-gate */
104ba7866cdSAli Bahrami static void arwrite(const char *, int, const char *, size_t);
105ba7866cdSAli Bahrami static size_t mklong_tab();
106ba7866cdSAli Bahrami static size_t mksymtab(const char *, ARFILEP **, int *);
107ba7866cdSAli Bahrami static const char *make_tmpname(const char *);
108ba7866cdSAli Bahrami static size_t sizeof_symtbl(size_t, int, size_t);
109ba7866cdSAli Bahrami static void savelongname(ARFILE *);
110ba7866cdSAli Bahrami static void savename(char *);
111ba7866cdSAli Bahrami static int search_sym_tab(const char *, ARFILE *, Elf *,
112ba7866cdSAli Bahrami Elf_Scn *, size_t *, ARFILEP **, size_t *);
113ba7866cdSAli Bahrami static size_t sizeofmembers(size_t);
114ba7866cdSAli Bahrami static char *sputl32(uint32_t, char *);
115ba7866cdSAli Bahrami static char *sputl64(uint64_t, char *);
116ba7866cdSAli Bahrami static void strtbl_pad(ARSTRTBL *, size_t, int);
117ba7866cdSAli Bahrami static char *trimslash(char *s);
118ba7866cdSAli Bahrami static void writesymtab(const char *, int fd, size_t, ARFILEP *,
119ba7866cdSAli Bahrami size_t);
1207c478bd9Sstevel@tonic-gate
1217c478bd9Sstevel@tonic-gate
122ba7866cdSAli Bahrami /*
123ba7866cdSAli Bahrami * Function to be called on exit to clean up incomplete new archive.
124ba7866cdSAli Bahrami */
125ba7866cdSAli Bahrami static void
exit_cleanup(void)126ba7866cdSAli Bahrami exit_cleanup(void)
127ba7866cdSAli Bahrami {
128ba7866cdSAli Bahrami if (ar_outfile.fd != -1) {
129ba7866cdSAli Bahrami /* Both of these system calls are Async-Signal-Safe */
130ba7866cdSAli Bahrami (void) close(ar_outfile.fd);
131ba7866cdSAli Bahrami (void) unlink(ar_outfile.path);
132ba7866cdSAli Bahrami }
133ba7866cdSAli Bahrami }
1347c478bd9Sstevel@tonic-gate
135ba7866cdSAli Bahrami /*
136ba7866cdSAli Bahrami * Open an existing archive.
137ba7866cdSAli Bahrami */
1387c478bd9Sstevel@tonic-gate int
getaf(Cmd_info * cmd_info)1397c478bd9Sstevel@tonic-gate getaf(Cmd_info *cmd_info)
1407c478bd9Sstevel@tonic-gate {
1417c478bd9Sstevel@tonic-gate Elf_Cmd cmd;
1427c478bd9Sstevel@tonic-gate int fd;
1437c478bd9Sstevel@tonic-gate char *arnam = cmd_info->arnam;
1447c478bd9Sstevel@tonic-gate
1457c478bd9Sstevel@tonic-gate if (elf_version(EV_CURRENT) == EV_NONE) {
146ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_ELF_VERSION),
147ba7866cdSAli Bahrami elf_errmsg(-1));
1487c478bd9Sstevel@tonic-gate exit(1);
1497c478bd9Sstevel@tonic-gate }
1507c478bd9Sstevel@tonic-gate
1517c478bd9Sstevel@tonic-gate if ((cmd_info->afd = fd = open(arnam, O_RDONLY)) == -1) {
152ba7866cdSAli Bahrami int err = errno;
153ba7866cdSAli Bahrami
154ba7866cdSAli Bahrami if (err == ENOENT) {
1557c478bd9Sstevel@tonic-gate /* archive does not exist yet, may have to create one */
1567c478bd9Sstevel@tonic-gate return (fd);
1577c478bd9Sstevel@tonic-gate } else {
1587c478bd9Sstevel@tonic-gate /* problem other than "does not exist" */
159ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_SYS_OPEN),
160ba7866cdSAli Bahrami arnam, strerror(err));
1617c478bd9Sstevel@tonic-gate exit(1);
1627c478bd9Sstevel@tonic-gate }
1637c478bd9Sstevel@tonic-gate }
1647c478bd9Sstevel@tonic-gate
1657c478bd9Sstevel@tonic-gate cmd = ELF_C_READ;
1667c478bd9Sstevel@tonic-gate cmd_info->arf = elf_begin(fd, cmd, (Elf *)0);
1677c478bd9Sstevel@tonic-gate
1687c478bd9Sstevel@tonic-gate if (elf_kind(cmd_info->arf) != ELF_K_AR) {
169ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_NOT_ARCHIVE), arnam);
170ba7866cdSAli Bahrami if (cmd_info->opt_flgs & (a_FLAG | b_FLAG))
171fb25420bSRobert Mustacchi (void) fprintf(stderr, MSG_INTL(MSG_USAGE_POSNAME),
172ba7866cdSAli Bahrami cmd_info->ponam);
1737c478bd9Sstevel@tonic-gate exit(1);
1747c478bd9Sstevel@tonic-gate }
1757c478bd9Sstevel@tonic-gate return (fd);
1767c478bd9Sstevel@tonic-gate }
1777c478bd9Sstevel@tonic-gate
17830a4e2aaSab /*
179ba7866cdSAli Bahrami * Given a value, and a pad alignment, return the number of bytes
180ba7866cdSAli Bahrami * required to pad the value to the next alignment boundary.
1819d6538abSab */
182ba7866cdSAli Bahrami static size_t
pad(size_t n,size_t align)183ba7866cdSAli Bahrami pad(size_t n, size_t align)
1849d6538abSab {
185ba7866cdSAli Bahrami size_t r;
1869d6538abSab
187ba7866cdSAli Bahrami r = n % align;
1889d6538abSab if (r)
189ba7866cdSAli Bahrami r = align - r;
1909d6538abSab
1919d6538abSab return (r);
1929d6538abSab }
1939d6538abSab
1949d6538abSab /*
195ba7866cdSAli Bahrami * If the current archive item is an ELF object, then ar(1) may have added
1969d6538abSab * newline padding at the end in order to bring the following object
1979d6538abSab * into PADSZ alignment within the file. This padding cannot be
198ba7866cdSAli Bahrami * distinguished from data using the information kept in the member header.
1999d6538abSab * This routine examines the objects, using knowledge of
20030a4e2aaSab * ELF and how our tools lay out objects to determine whether padding was
20130a4e2aaSab * added to an archive item. If so, it adjusts the st_size and
20230a4e2aaSab * st_padding fields of the file argument to reflect it.
20330a4e2aaSab */
20430a4e2aaSab static void
recover_padding(Elf * elf,ARFILE * file)20530a4e2aaSab recover_padding(Elf *elf, ARFILE *file)
20630a4e2aaSab {
207ba7866cdSAli Bahrami size_t extent;
208ba7866cdSAli Bahrami size_t padding;
209f0a0736fSRichard Lowe size_t shnum;
210ba7866cdSAli Bahrami GElf_Ehdr ehdr;
21130a4e2aaSab
21230a4e2aaSab
21330a4e2aaSab /* ar(1) only pads objects, so bail if not looking at one */
21430a4e2aaSab if (gelf_getclass(elf) == ELFCLASSNONE)
21530a4e2aaSab return;
21630a4e2aaSab
21730a4e2aaSab /*
218d2d5cf7cSAli Bahrami * libelf always puts the section header array at the end
21930a4e2aaSab * of the object, and all of our compilers and other tools
220d2d5cf7cSAli Bahrami * use libelf or follow this convention. So, it is extremely
22130a4e2aaSab * likely that the section header array is at the end of this
22230a4e2aaSab * object: Find the address at the end of the array and compare
2239d6538abSab * it to the archive ar_size. If they are within PADSZ bytes, then
2249d6538abSab * we've found the end, and the difference is padding (We assume
2259d6538abSab * that no ELF section can fit into PADSZ bytes).
22630a4e2aaSab */
227f0a0736fSRichard Lowe if (elf_getshdrnum(elf, &shnum) == -1)
228f0a0736fSRichard Lowe return;
229f0a0736fSRichard Lowe
23030a4e2aaSab extent = gelf_getehdr(elf, &ehdr)
231f0a0736fSRichard Lowe ? (ehdr.e_shoff + (shnum * ehdr.e_shentsize)) : 0;
23230a4e2aaSab
233ba7866cdSAli Bahrami /*
234ba7866cdSAli Bahrami * If the extent exceeds the end of the archive member
235ba7866cdSAli Bahrami * (negative padding), then we don't know what is going on
236ba7866cdSAli Bahrami * and simply leave things alone.
237ba7866cdSAli Bahrami */
238ba7866cdSAli Bahrami if (extent > file->ar_size)
239ba7866cdSAli Bahrami return;
240ba7866cdSAli Bahrami
241ba7866cdSAli Bahrami padding = file->ar_size - extent;
242ba7866cdSAli Bahrami if (padding >= PADSZ) {
24330a4e2aaSab /*
24430a4e2aaSab * The section header array is not at the end of the object.
24530a4e2aaSab * Traverse the section headers and look for the one with
24630a4e2aaSab * the highest used address. If this address is within
2479d6538abSab * PADSZ bytes of ar_size, then this is the end of the object.
24830a4e2aaSab */
249ba7866cdSAli Bahrami Elf_Scn *scn = NULL;
25030a4e2aaSab
25130a4e2aaSab do {
25230a4e2aaSab scn = elf_nextscn(elf, scn);
25330a4e2aaSab if (scn) {
25430a4e2aaSab GElf_Shdr shdr;
25530a4e2aaSab
25630a4e2aaSab if (gelf_getshdr(scn, &shdr)) {
257ba7866cdSAli Bahrami size_t t;
258ba7866cdSAli Bahrami
259ba7866cdSAli Bahrami t = shdr.sh_offset + shdr.sh_size;
26030a4e2aaSab if (t > extent)
26130a4e2aaSab extent = t;
26230a4e2aaSab }
26330a4e2aaSab }
26430a4e2aaSab } while (scn);
265ba7866cdSAli Bahrami
266ba7866cdSAli Bahrami if (extent > file->ar_size)
267ba7866cdSAli Bahrami return;
268ba7866cdSAli Bahrami padding = file->ar_size - extent;
26930a4e2aaSab }
27030a4e2aaSab
27130a4e2aaSab /*
27230a4e2aaSab * Now, test the padding. We only act on padding in the range
2739d6538abSab * (0 < pad < PADSZ) (ar(1) will never add more than this). A pad
2749d6538abSab * of 0 requires no action, and any other size above (PADSZ-1) means
27530a4e2aaSab * that we don't understand the layout of this object, and as such,
27630a4e2aaSab * cannot do anything.
27730a4e2aaSab *
2789d6538abSab * If the padding is in range, and the raw data for the
27930a4e2aaSab * object is available, then we perform one additional sanity
28030a4e2aaSab * check before moving forward: ar(1) always pads with newline
28130a4e2aaSab * characters. If anything else is seen, it is not padding so
28230a4e2aaSab * leave it alone.
28330a4e2aaSab */
284ba7866cdSAli Bahrami if (padding < PADSZ) {
28530a4e2aaSab if (file->ar_contents) {
286ba7866cdSAli Bahrami size_t cnt = padding;
28730a4e2aaSab char *p = file->ar_contents + extent;
28830a4e2aaSab
28930a4e2aaSab while (cnt--) {
29030a4e2aaSab if (*p++ != '\n') { /* No padding */
29130a4e2aaSab padding = 0;
29230a4e2aaSab break;
29330a4e2aaSab }
29430a4e2aaSab }
29530a4e2aaSab }
29630a4e2aaSab
29730a4e2aaSab /* Remove the padding from the size */
29830a4e2aaSab file->ar_size -= padding;
29930a4e2aaSab file->ar_padding = padding;
30030a4e2aaSab }
30130a4e2aaSab }
30230a4e2aaSab
303ba7866cdSAli Bahrami /*
304ba7866cdSAli Bahrami * Each call to getfile() returns the next unread archive member
305ba7866cdSAli Bahrami * from the archive opened by getaf(). Returns NULL if no more
306ba7866cdSAli Bahrami * archive members are left.
307ba7866cdSAli Bahrami */
3087c478bd9Sstevel@tonic-gate ARFILE *
getfile(Cmd_info * cmd_info)3097c478bd9Sstevel@tonic-gate getfile(Cmd_info *cmd_info)
3107c478bd9Sstevel@tonic-gate {
311ba7866cdSAli Bahrami Elf_Arhdr *mem_header = NULL;
3127c478bd9Sstevel@tonic-gate ARFILE *file;
3137c478bd9Sstevel@tonic-gate char *tmp_rawname, *file_rawname;
3147c478bd9Sstevel@tonic-gate Elf *elf;
3157c478bd9Sstevel@tonic-gate char *arnam = cmd_info->arnam;
3167c478bd9Sstevel@tonic-gate int fd = cmd_info->afd;
3177c478bd9Sstevel@tonic-gate Elf *arf = cmd_info->arf;
3187c478bd9Sstevel@tonic-gate
3197c478bd9Sstevel@tonic-gate if (fd == -1)
3207c478bd9Sstevel@tonic-gate return (NULL); /* the archive doesn't exist */
3217c478bd9Sstevel@tonic-gate
322ba7866cdSAli Bahrami while (mem_header == NULL) {
3237c478bd9Sstevel@tonic-gate if ((elf = elf_begin(fd, ELF_C_READ, arf)) == 0)
324ba7866cdSAli Bahrami return (NULL); /* archive is empty or have hit end */
325ba7866cdSAli Bahrami
3267c478bd9Sstevel@tonic-gate if ((mem_header = elf_getarhdr(elf)) == NULL) {
327ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_ELF_MALARCHIVE),
328ba7866cdSAli Bahrami arnam, EC_XWORD(elf_getbase(elf)), elf_errmsg(-1));
329ba7866cdSAli Bahrami exit(1);
330ba7866cdSAli Bahrami }
331ba7866cdSAli Bahrami
332ba7866cdSAli Bahrami /* Ignore special members like the symbol and string tables */
333ba7866cdSAli Bahrami if (mem_header->ar_name[0] == '/') {
334ba7866cdSAli Bahrami (void) elf_next(elf);
335ba7866cdSAli Bahrami (void) elf_end(elf);
336ba7866cdSAli Bahrami mem_header = NULL;
3377c478bd9Sstevel@tonic-gate }
3387c478bd9Sstevel@tonic-gate }
3397c478bd9Sstevel@tonic-gate
3407c478bd9Sstevel@tonic-gate /*
3417c478bd9Sstevel@tonic-gate * NOTE:
3427c478bd9Sstevel@tonic-gate * The mem_header->ar_name[] is set to a NULL string
3437c478bd9Sstevel@tonic-gate * if the archive member header has some error.
3447c478bd9Sstevel@tonic-gate * (See elf_getarhdr() man page.)
3457c478bd9Sstevel@tonic-gate * It is set to NULL for example, the ar command reads
3467c478bd9Sstevel@tonic-gate * the archive files created by SunOS 4.1 system.
3477c478bd9Sstevel@tonic-gate * See c block comment in cmd.c, "Incompatible Archive Header".
3487c478bd9Sstevel@tonic-gate */
3497c478bd9Sstevel@tonic-gate file = newfile();
3507c478bd9Sstevel@tonic-gate (void) strncpy(file->ar_name, mem_header->ar_name, SNAME);
3517c478bd9Sstevel@tonic-gate
352ba7866cdSAli Bahrami if ((file->ar_longname = malloc(strlen(mem_header->ar_name) + 1))
3537c478bd9Sstevel@tonic-gate == NULL) {
354ba7866cdSAli Bahrami int err = errno;
355ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_MALLOC), strerror(err));
3567c478bd9Sstevel@tonic-gate exit(1);
3577c478bd9Sstevel@tonic-gate }
3587c478bd9Sstevel@tonic-gate (void) strcpy(file->ar_longname, mem_header->ar_name);
359ba7866cdSAli Bahrami if ((file->ar_rawname = malloc(strlen(mem_header->ar_rawname) + 1))
3607c478bd9Sstevel@tonic-gate == NULL) {
361ba7866cdSAli Bahrami int err = errno;
362ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_MALLOC), strerror(err));
3637c478bd9Sstevel@tonic-gate exit(1);
3647c478bd9Sstevel@tonic-gate }
3657c478bd9Sstevel@tonic-gate tmp_rawname = mem_header->ar_rawname;
3667c478bd9Sstevel@tonic-gate file_rawname = file->ar_rawname;
3677c478bd9Sstevel@tonic-gate while (!isspace(*tmp_rawname) &&
368d2d5cf7cSAli Bahrami ((*file_rawname = *tmp_rawname) != '\0')) {
3697c478bd9Sstevel@tonic-gate file_rawname++;
3707c478bd9Sstevel@tonic-gate tmp_rawname++;
3717c478bd9Sstevel@tonic-gate }
3727c478bd9Sstevel@tonic-gate if (!(*tmp_rawname == '\0'))
3737c478bd9Sstevel@tonic-gate *file_rawname = '\0';
3747c478bd9Sstevel@tonic-gate
3757c478bd9Sstevel@tonic-gate file->ar_date = mem_header->ar_date;
3767c478bd9Sstevel@tonic-gate file->ar_uid = mem_header->ar_uid;
3777c478bd9Sstevel@tonic-gate file->ar_gid = mem_header->ar_gid;
3787c478bd9Sstevel@tonic-gate file->ar_mode = (unsigned long) mem_header->ar_mode;
3797c478bd9Sstevel@tonic-gate file->ar_size = mem_header->ar_size;
3807c478bd9Sstevel@tonic-gate
3817c478bd9Sstevel@tonic-gate /* reverse logic */
382ba7866cdSAli Bahrami if ((cmd_info->opt_flgs & (t_FLAG | s_FLAG)) != t_FLAG) {
3837c478bd9Sstevel@tonic-gate size_t ptr;
3847c478bd9Sstevel@tonic-gate file->ar_flag = F_ELFRAW;
3857c478bd9Sstevel@tonic-gate if ((file->ar_contents = elf_rawfile(elf, &ptr))
3867c478bd9Sstevel@tonic-gate == NULL) {
3877c478bd9Sstevel@tonic-gate if (ptr != 0) {
388ba7866cdSAli Bahrami (void) fprintf(stderr,
389ba7866cdSAli Bahrami MSG_INTL(MSG_ELF_RAWFILE), elf_errmsg(-1));
3907c478bd9Sstevel@tonic-gate exit(1);
3917c478bd9Sstevel@tonic-gate }
3927c478bd9Sstevel@tonic-gate }
3937c478bd9Sstevel@tonic-gate file->ar_elf = elf;
3947c478bd9Sstevel@tonic-gate }
39530a4e2aaSab
39630a4e2aaSab recover_padding(elf, file);
39730a4e2aaSab
3987c478bd9Sstevel@tonic-gate (void) elf_next(elf);
3997c478bd9Sstevel@tonic-gate return (file);
4007c478bd9Sstevel@tonic-gate }
4017c478bd9Sstevel@tonic-gate
402ba7866cdSAli Bahrami /*
403ba7866cdSAli Bahrami * Allocate a new archive member descriptor and add it to the list.
404ba7866cdSAli Bahrami */
4057c478bd9Sstevel@tonic-gate ARFILE *
newfile(void)406d6555420Smike_s newfile(void)
4077c478bd9Sstevel@tonic-gate {
4087c478bd9Sstevel@tonic-gate static ARFILE *buffer = NULL;
409ba7866cdSAli Bahrami static size_t count = 0;
410ba7866cdSAli Bahrami ARFILE *fileptr;
4117c478bd9Sstevel@tonic-gate
4127c478bd9Sstevel@tonic-gate if (count == 0) {
4137c478bd9Sstevel@tonic-gate if ((buffer = (ARFILE *) calloc(CHUNK, sizeof (ARFILE)))
4147c478bd9Sstevel@tonic-gate == NULL) {
415ba7866cdSAli Bahrami int err = errno;
416ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_MALLOC),
417ba7866cdSAli Bahrami strerror(err));
4187c478bd9Sstevel@tonic-gate exit(1);
4197c478bd9Sstevel@tonic-gate }
4207c478bd9Sstevel@tonic-gate count = CHUNK;
4217c478bd9Sstevel@tonic-gate }
4227c478bd9Sstevel@tonic-gate count--;
4237c478bd9Sstevel@tonic-gate fileptr = buffer++;
4247c478bd9Sstevel@tonic-gate
4257c478bd9Sstevel@tonic-gate if (listhead)
4267c478bd9Sstevel@tonic-gate listend->ar_next = fileptr;
4277c478bd9Sstevel@tonic-gate else
4287c478bd9Sstevel@tonic-gate listhead = fileptr;
4297c478bd9Sstevel@tonic-gate listend = fileptr;
4307c478bd9Sstevel@tonic-gate return (fileptr);
4317c478bd9Sstevel@tonic-gate }
4327c478bd9Sstevel@tonic-gate
4337c478bd9Sstevel@tonic-gate static char *
trimslash(char * s)4347c478bd9Sstevel@tonic-gate trimslash(char *s)
4357c478bd9Sstevel@tonic-gate {
4367c478bd9Sstevel@tonic-gate static char buf[SNAME];
4377c478bd9Sstevel@tonic-gate
4387c478bd9Sstevel@tonic-gate (void) strncpy(buf, trim(s), SNAME - 2);
4397c478bd9Sstevel@tonic-gate buf[SNAME - 2] = '\0';
440ba7866cdSAli Bahrami return (strcat(buf, MSG_ORIG(MSG_STR_SLASH)));
4417c478bd9Sstevel@tonic-gate }
4427c478bd9Sstevel@tonic-gate
4437c478bd9Sstevel@tonic-gate char *
trim(char * s)4447c478bd9Sstevel@tonic-gate trim(char *s)
4457c478bd9Sstevel@tonic-gate {
4467c478bd9Sstevel@tonic-gate char *p1, *p2;
4477c478bd9Sstevel@tonic-gate
4487c478bd9Sstevel@tonic-gate for (p1 = s; *p1; p1++)
4497c478bd9Sstevel@tonic-gate ;
4507c478bd9Sstevel@tonic-gate while (p1 > s) {
4517c478bd9Sstevel@tonic-gate if (*--p1 != '/')
4527c478bd9Sstevel@tonic-gate break;
4537c478bd9Sstevel@tonic-gate *p1 = 0;
4547c478bd9Sstevel@tonic-gate }
4557c478bd9Sstevel@tonic-gate p2 = s;
4567c478bd9Sstevel@tonic-gate for (p1 = s; *p1; p1++)
4577c478bd9Sstevel@tonic-gate if (*p1 == '/')
4587c478bd9Sstevel@tonic-gate p2 = p1 + 1;
4597c478bd9Sstevel@tonic-gate return (p2);
4607c478bd9Sstevel@tonic-gate }
4617c478bd9Sstevel@tonic-gate
4627c478bd9Sstevel@tonic-gate
463ba7866cdSAli Bahrami /*
464ba7866cdSAli Bahrami * Find all the global symbols exported by ELF archive members, and
465ba7866cdSAli Bahrami * build a list associating each one with the archive member that
466ba7866cdSAli Bahrami * provides it.
467ba7866cdSAli Bahrami *
468ba7866cdSAli Bahrami * exit:
469ba7866cdSAli Bahrami * *symlist is set to the list of symbols. If any ELF object was
470ba7866cdSAli Bahrami * found, *found_obj is set to TRUE (1). Returns the number of symbols
471ba7866cdSAli Bahrami * located.
472ba7866cdSAli Bahrami */
473ba7866cdSAli Bahrami static size_t
mksymtab(const char * arname,ARFILEP ** symlist,int * found_obj)474ba7866cdSAli Bahrami mksymtab(const char *arname, ARFILEP **symlist, int *found_obj)
4757c478bd9Sstevel@tonic-gate {
476ba7866cdSAli Bahrami ARFILE *fptr;
477ba7866cdSAli Bahrami size_t mem_offset = 0;
478fb25420bSRobert Mustacchi Elf *elf;
479ba7866cdSAli Bahrami Elf_Scn *scn;
480ba7866cdSAli Bahrami GElf_Ehdr ehdr;
481ba7866cdSAli Bahrami int newfd;
482ba7866cdSAli Bahrami size_t nsyms = 0;
483ba7866cdSAli Bahrami int class = 0;
484ba7866cdSAli Bahrami Elf_Data *data;
485ba7866cdSAli Bahrami size_t num_errs = 0;
4867c478bd9Sstevel@tonic-gate
4877c478bd9Sstevel@tonic-gate newfd = 0;
4887c478bd9Sstevel@tonic-gate for (fptr = listhead; fptr; fptr = fptr->ar_next) {
4897c478bd9Sstevel@tonic-gate /* determine if file is coming from the archive or not */
490ba7866cdSAli Bahrami if ((fptr->ar_elf != NULL) && (fptr->ar_pathname == NULL)) {
4917c478bd9Sstevel@tonic-gate /*
4927c478bd9Sstevel@tonic-gate * I can use the saved elf descriptor.
4937c478bd9Sstevel@tonic-gate */
4947c478bd9Sstevel@tonic-gate elf = fptr->ar_elf;
495ba7866cdSAli Bahrami } else if ((fptr->ar_elf == NULL) &&
4967c478bd9Sstevel@tonic-gate (fptr->ar_pathname != NULL)) {
497ba7866cdSAli Bahrami #ifdef _LP64
498ba7866cdSAli Bahrami /*
499ba7866cdSAli Bahrami * The archive member header ar_size field is 10
500ba7866cdSAli Bahrami * decimal digits, sufficient to represent a 32-bit
501ba7866cdSAli Bahrami * value, but not a 64-bit one. Hence, we reject
502ba7866cdSAli Bahrami * attempts to insert a member larger than 4GB.
503ba7866cdSAli Bahrami *
504ba7866cdSAli Bahrami * One obvious way to extend the format without altering
505ba7866cdSAli Bahrami * the ar_hdr struct is to use the same mechanism used
506ba7866cdSAli Bahrami * for ar_name: Put the size string into the long name
507ba7866cdSAli Bahrami * string table and write a string /xxx into ar_size,
508ba7866cdSAli Bahrami * where xxx is the string table offset.
509ba7866cdSAli Bahrami *
510ba7866cdSAli Bahrami * At the time of this writing (June 2010), the largest
511ba7866cdSAli Bahrami * relocatable objects are measured in 10s or 100s
512ba7866cdSAli Bahrami * of megabytes, so we still have many years to go
513ba7866cdSAli Bahrami * before this becomes limiting. By that time, it may
514ba7866cdSAli Bahrami * turn out that a completely new archive format is
515ba7866cdSAli Bahrami * a better solution, as the current format has many
516ba7866cdSAli Bahrami * warts and inefficiencies. In the meantime, we
517ba7866cdSAli Bahrami * won't burden the current implementation with support
518ba7866cdSAli Bahrami * for a bandaid feature that will have little use.
519ba7866cdSAli Bahrami */
520ba7866cdSAli Bahrami if (fptr->ar_size > 0xffffffff) {
521ba7866cdSAli Bahrami (void) fprintf(stderr,
522ba7866cdSAli Bahrami MSG_INTL(MSG_ERR_MEMBER4G),
523ba7866cdSAli Bahrami fptr->ar_pathname);
524ba7866cdSAli Bahrami num_errs++;
525ba7866cdSAli Bahrami continue;
526ba7866cdSAli Bahrami }
527ba7866cdSAli Bahrami #endif
5287c478bd9Sstevel@tonic-gate if ((newfd =
5297c478bd9Sstevel@tonic-gate open(fptr->ar_pathname, O_RDONLY)) == -1) {
530ba7866cdSAli Bahrami int err = errno;
531ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_SYS_OPEN),
532ba7866cdSAli Bahrami fptr->ar_pathname, strerror(err));
5337c478bd9Sstevel@tonic-gate num_errs++;
5347c478bd9Sstevel@tonic-gate continue;
5357c478bd9Sstevel@tonic-gate }
5367c478bd9Sstevel@tonic-gate
5377c478bd9Sstevel@tonic-gate if ((elf = elf_begin(newfd,
538d2d5cf7cSAli Bahrami ELF_C_READ, (Elf *)0)) == 0) {
539ba7866cdSAli Bahrami (void) fprintf(stderr,
540ba7866cdSAli Bahrami MSG_INTL(MSG_ELF_BEGIN_FILE),
541ba7866cdSAli Bahrami fptr->ar_pathname, elf_errmsg(-1));
5427c478bd9Sstevel@tonic-gate (void) close(newfd);
5437c478bd9Sstevel@tonic-gate newfd = 0;
5447c478bd9Sstevel@tonic-gate num_errs++;
5457c478bd9Sstevel@tonic-gate continue;
5467c478bd9Sstevel@tonic-gate }
5477c478bd9Sstevel@tonic-gate if (elf_kind(elf) == ELF_K_AR) {
5487c478bd9Sstevel@tonic-gate if (newfd) {
5497c478bd9Sstevel@tonic-gate (void) close(newfd);
5507c478bd9Sstevel@tonic-gate newfd = 0;
5517c478bd9Sstevel@tonic-gate }
5527c478bd9Sstevel@tonic-gate (void) elf_end(elf);
5537c478bd9Sstevel@tonic-gate continue;
5547c478bd9Sstevel@tonic-gate }
5557c478bd9Sstevel@tonic-gate } else {
556ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_INTERNAL_01));
5577c478bd9Sstevel@tonic-gate exit(1);
5587c478bd9Sstevel@tonic-gate }
5597c478bd9Sstevel@tonic-gate if (gelf_getehdr(elf, &ehdr) != 0) {
560f0a0736fSRichard Lowe size_t shstrndx = 0;
5617c478bd9Sstevel@tonic-gate if ((class = gelf_getclass(elf)) == ELFCLASS64) {
5627c478bd9Sstevel@tonic-gate fptr->ar_flag |= F_CLASS64;
5637c478bd9Sstevel@tonic-gate } else if (class == ELFCLASS32)
5647c478bd9Sstevel@tonic-gate fptr->ar_flag |= F_CLASS32;
565f0a0736fSRichard Lowe
566f0a0736fSRichard Lowe if (elf_getshdrstrndx(elf, &shstrndx) == -1) {
567f0a0736fSRichard Lowe if (fptr->ar_pathname != NULL) {
568f0a0736fSRichard Lowe (void) fprintf(stderr,
569f0a0736fSRichard Lowe MSG_INTL(MSG_ELF_GETSHSTRNDX_FILE),
570f0a0736fSRichard Lowe fptr->ar_pathname, elf_errmsg(-1));
571f0a0736fSRichard Lowe } else {
572f0a0736fSRichard Lowe (void) fprintf(stderr,
573f0a0736fSRichard Lowe MSG_INTL(MSG_ELF_GETSHSTRNDX_AR),
574f0a0736fSRichard Lowe arname, fptr->ar_longname,
575f0a0736fSRichard Lowe elf_errmsg(-1));
576f0a0736fSRichard Lowe }
577f0a0736fSRichard Lowe num_errs++;
578f0a0736fSRichard Lowe if (newfd) {
579f0a0736fSRichard Lowe (void) close(newfd);
580f0a0736fSRichard Lowe newfd = 0;
581f0a0736fSRichard Lowe }
582f0a0736fSRichard Lowe (void) elf_end(elf);
583f0a0736fSRichard Lowe continue;
584f0a0736fSRichard Lowe }
585f0a0736fSRichard Lowe
586f0a0736fSRichard Lowe scn = elf_getscn(elf, shstrndx);
5877c478bd9Sstevel@tonic-gate if (scn == NULL) {
5887c478bd9Sstevel@tonic-gate if (fptr->ar_pathname != NULL)
589ba7866cdSAli Bahrami (void) fprintf(stderr,
590ba7866cdSAli Bahrami MSG_INTL(MSG_ELF_GETSCN_FILE),
591ba7866cdSAli Bahrami fptr->ar_pathname, elf_errmsg(-1));
5927c478bd9Sstevel@tonic-gate else
593ba7866cdSAli Bahrami (void) fprintf(stderr,
594ba7866cdSAli Bahrami MSG_INTL(MSG_ELF_GETSCN_AR),
595ba7866cdSAli Bahrami arname, fptr->ar_longname,
596ba7866cdSAli Bahrami elf_errmsg(-1));
5977c478bd9Sstevel@tonic-gate num_errs++;
5987c478bd9Sstevel@tonic-gate if (newfd) {
5997c478bd9Sstevel@tonic-gate (void) close(newfd);
6007c478bd9Sstevel@tonic-gate newfd = 0;
6017c478bd9Sstevel@tonic-gate }
6027c478bd9Sstevel@tonic-gate (void) elf_end(elf);
6037c478bd9Sstevel@tonic-gate continue;
6047c478bd9Sstevel@tonic-gate }
6057c478bd9Sstevel@tonic-gate
6067c478bd9Sstevel@tonic-gate data = 0;
6077c478bd9Sstevel@tonic-gate data = elf_getdata(scn, data);
6087c478bd9Sstevel@tonic-gate if (data == NULL) {
6097c478bd9Sstevel@tonic-gate if (fptr->ar_pathname != NULL)
610ba7866cdSAli Bahrami (void) fprintf(stderr,
611ba7866cdSAli Bahrami MSG_INTL(MSG_ELF_GETDATA_FILE),
612ba7866cdSAli Bahrami fptr->ar_pathname, elf_errmsg(-1));
6137c478bd9Sstevel@tonic-gate else
614ba7866cdSAli Bahrami (void) fprintf(stderr,
615ba7866cdSAli Bahrami MSG_INTL(MSG_ELF_GETDATA_AR),
616ba7866cdSAli Bahrami arname, fptr->ar_longname,
617ba7866cdSAli Bahrami elf_errmsg(-1));
6187c478bd9Sstevel@tonic-gate num_errs++;
6197c478bd9Sstevel@tonic-gate if (newfd) {
6207c478bd9Sstevel@tonic-gate (void) close(newfd);
6217c478bd9Sstevel@tonic-gate newfd = 0;
6227c478bd9Sstevel@tonic-gate }
6237c478bd9Sstevel@tonic-gate (void) elf_end(elf);
6247c478bd9Sstevel@tonic-gate continue;
6257c478bd9Sstevel@tonic-gate }
6267c478bd9Sstevel@tonic-gate if (data->d_size == 0) {
6277c478bd9Sstevel@tonic-gate if (fptr->ar_pathname != NULL)
628ba7866cdSAli Bahrami (void) fprintf(stderr,
629ba7866cdSAli Bahrami MSG_INTL(MSG_W_ELF_NODATA_FILE),
630d2d5cf7cSAli Bahrami fptr->ar_pathname);
6317c478bd9Sstevel@tonic-gate else
632ba7866cdSAli Bahrami (void) fprintf(stderr,
633ba7866cdSAli Bahrami MSG_INTL(MSG_W_ELF_NODATA_AR),
634ba7866cdSAli Bahrami arname, fptr->ar_longname);
6357c478bd9Sstevel@tonic-gate if (newfd) {
6367c478bd9Sstevel@tonic-gate (void) close(newfd);
6377c478bd9Sstevel@tonic-gate newfd = 0;
6387c478bd9Sstevel@tonic-gate }
6397c478bd9Sstevel@tonic-gate (void) elf_end(elf);
6407c478bd9Sstevel@tonic-gate num_errs++;
6417c478bd9Sstevel@tonic-gate continue;
6427c478bd9Sstevel@tonic-gate }
6437c478bd9Sstevel@tonic-gate
6447c478bd9Sstevel@tonic-gate /* loop through sections to find symbol table */
6457c478bd9Sstevel@tonic-gate scn = 0;
6467c478bd9Sstevel@tonic-gate while ((scn = elf_nextscn(elf, scn)) != 0) {
6477c478bd9Sstevel@tonic-gate GElf_Shdr shdr;
6487c478bd9Sstevel@tonic-gate if (gelf_getshdr(scn, &shdr) == NULL) {
649ba7866cdSAli Bahrami /* BEGIN CSTYLED */
6507c478bd9Sstevel@tonic-gate if (fptr->ar_pathname != NULL)
651ba7866cdSAli Bahrami (void) fprintf(stderr,
652ba7866cdSAli Bahrami MSG_INTL(MSG_ELF_GETDATA_FILE),
653ba7866cdSAli Bahrami fptr->ar_pathname,
654ba7866cdSAli Bahrami elf_errmsg(-1));
6557c478bd9Sstevel@tonic-gate else
656ba7866cdSAli Bahrami (void) fprintf(stderr,
657ba7866cdSAli Bahrami MSG_INTL(MSG_ELF_GETDATA_AR),
658ba7866cdSAli Bahrami arname, fptr->ar_longname,
659ba7866cdSAli Bahrami elf_errmsg(-1));
660ba7866cdSAli Bahrami /* END CSTYLED */
6617c478bd9Sstevel@tonic-gate if (newfd) {
6627c478bd9Sstevel@tonic-gate (void) close(newfd);
6637c478bd9Sstevel@tonic-gate newfd = 0;
6647c478bd9Sstevel@tonic-gate }
6657c478bd9Sstevel@tonic-gate num_errs++;
6667c478bd9Sstevel@tonic-gate (void) elf_end(elf);
6677c478bd9Sstevel@tonic-gate continue;
6687c478bd9Sstevel@tonic-gate }
6697c478bd9Sstevel@tonic-gate *found_obj = 1;
670f0a0736fSRichard Lowe if (shdr.sh_type == SHT_SYMTAB) {
671ba7866cdSAli Bahrami if (search_sym_tab(arname, fptr, elf,
672d2d5cf7cSAli Bahrami scn, &nsyms, symlist,
673d2d5cf7cSAli Bahrami &num_errs) == -1) {
674d2d5cf7cSAli Bahrami if (newfd) {
675d2d5cf7cSAli Bahrami (void) close(newfd);
676d2d5cf7cSAli Bahrami newfd = 0;
677d2d5cf7cSAli Bahrami }
678d2d5cf7cSAli Bahrami continue;
6797c478bd9Sstevel@tonic-gate }
680f0a0736fSRichard Lowe }
6817c478bd9Sstevel@tonic-gate }
6827c478bd9Sstevel@tonic-gate }
6837c478bd9Sstevel@tonic-gate mem_offset += sizeof (struct ar_hdr) + fptr->ar_size;
6847c478bd9Sstevel@tonic-gate if (fptr->ar_size & 01)
6857c478bd9Sstevel@tonic-gate mem_offset++;
6867c478bd9Sstevel@tonic-gate (void) elf_end(elf);
6877c478bd9Sstevel@tonic-gate if (newfd) {
6887c478bd9Sstevel@tonic-gate (void) close(newfd);
6897c478bd9Sstevel@tonic-gate newfd = 0;
6907c478bd9Sstevel@tonic-gate }
691ba7866cdSAli Bahrami }
6927c478bd9Sstevel@tonic-gate if (num_errs)
6937c478bd9Sstevel@tonic-gate exit(1);
694ba7866cdSAli Bahrami
695ba7866cdSAli Bahrami if (found_obj) {
696ba7866cdSAli Bahrami if (nsyms == 0) {
697ba7866cdSAli Bahrami /*
698ba7866cdSAli Bahrami * It is possible, though rare, to have ELF objects
699ba7866cdSAli Bahrami * that do not export any global symbols. Presumably
700ba7866cdSAli Bahrami * such objects operate via their .init/.fini
701ba7866cdSAli Bahrami * sections. In this case, we produce an empty
702ba7866cdSAli Bahrami * symbol table, so that applications that rely
703ba7866cdSAli Bahrami * on a successful call to elf_getarsym() to determine
704ba7866cdSAli Bahrami * if ELF objects are present will succeed. To do this,
705ba7866cdSAli Bahrami * we require a small empty symbol string table.
706ba7866cdSAli Bahrami */
707ba7866cdSAli Bahrami strtbl_pad(&sym_strtbl, 4, '\0');
708ba7866cdSAli Bahrami } else {
709ba7866cdSAli Bahrami /*
710ba7866cdSAli Bahrami * Historical behavior is to pad string tables
711ba7866cdSAli Bahrami * to a multiple of 4.
712ba7866cdSAli Bahrami */
713ba7866cdSAli Bahrami strtbl_pad(&sym_strtbl, pad(sym_strtbl.used, 4), '\0');
714ba7866cdSAli Bahrami }
715ba7866cdSAli Bahrami
716ba7866cdSAli Bahrami }
717ba7866cdSAli Bahrami
7187c478bd9Sstevel@tonic-gate return (nsyms);
7197c478bd9Sstevel@tonic-gate }
7207c478bd9Sstevel@tonic-gate
7217c478bd9Sstevel@tonic-gate /*
722ba7866cdSAli Bahrami * Output a member header.
7237c478bd9Sstevel@tonic-gate */
724ba7866cdSAli Bahrami /*ARGSUSED*/
725ba7866cdSAli Bahrami static void
write_member_header(const char * filename,int fd,int is_elf,const char * name,time_t timestamp,uid_t uid,gid_t gid,mode_t mode,size_t size)726ba7866cdSAli Bahrami write_member_header(const char *filename, int fd, int is_elf,
727ba7866cdSAli Bahrami const char *name, time_t timestamp, uid_t uid, gid_t gid, mode_t mode,
728ba7866cdSAli Bahrami size_t size)
7297c478bd9Sstevel@tonic-gate {
730ba7866cdSAli Bahrami char buf[sizeof (struct ar_hdr) + 1];
731ba7866cdSAli Bahrami int len;
732ba7866cdSAli Bahrami
733ba7866cdSAli Bahrami len = snprintf(buf, sizeof (buf), MSG_ORIG(MSG_MH_FORMAT), name,
734ba7866cdSAli Bahrami EC_WORD(timestamp), EC_WORD(uid), EC_WORD(gid), EC_WORD(mode),
735ba7866cdSAli Bahrami EC_XWORD(size), ARFMAG);
7367c478bd9Sstevel@tonic-gate
7377c478bd9Sstevel@tonic-gate /*
738ba7866cdSAli Bahrami * If snprintf() reports that it needed more space than we gave
739ba7866cdSAli Bahrami * it, it means that the caller fed us a long name, which is a
740ba7866cdSAli Bahrami * fatal internal error.
7417c478bd9Sstevel@tonic-gate */
742ba7866cdSAli Bahrami if (len != sizeof (struct ar_hdr)) {
743ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_INTERNAL_02));
7447c478bd9Sstevel@tonic-gate exit(1);
7457c478bd9Sstevel@tonic-gate }
7467c478bd9Sstevel@tonic-gate
747ba7866cdSAli Bahrami arwrite(filename, fd, buf, len);
748ba7866cdSAli Bahrami
749ba7866cdSAli Bahrami /*
750ba7866cdSAli Bahrami * We inject inter-member padding to ensure that ELF object
751ba7866cdSAli Bahrami * member data is aligned on PADSZ. If this is a debug build,
752ba7866cdSAli Bahrami * verify that the computations were right.
753ba7866cdSAli Bahrami */
754ba7866cdSAli Bahrami assert(!is_elf || (pad(lseek(fd, 0, SEEK_CUR), PADSZ) == 0));
755ba7866cdSAli Bahrami }
756ba7866cdSAli Bahrami
757ba7866cdSAli Bahrami /*
758ba7866cdSAli Bahrami * Write the archive symbol table member to the output archive file.
759ba7866cdSAli Bahrami *
760ba7866cdSAli Bahrami * note:
761ba7866cdSAli Bahrami * sizeofmembers() must have been called to establish member offset
762ba7866cdSAli Bahrami * and padding values before writesymtab() is used.
763ba7866cdSAli Bahrami */
764ba7866cdSAli Bahrami static void
writesymtab(const char * filename,int fd,size_t nsyms,ARFILEP * symlist,size_t eltsize)765ba7866cdSAli Bahrami writesymtab(const char *filename, int fd, size_t nsyms, ARFILEP *symlist,
766ba7866cdSAli Bahrami size_t eltsize)
767ba7866cdSAli Bahrami {
768ba7866cdSAli Bahrami size_t i, j;
769ba7866cdSAli Bahrami ARFILEP *ptr;
770ba7866cdSAli Bahrami size_t tblsize;
771ba7866cdSAli Bahrami char *buf, *dst;
772ba7866cdSAli Bahrami int is64 = (eltsize == 8);
773ba7866cdSAli Bahrami
774ba7866cdSAli Bahrami /*
775ba7866cdSAli Bahrami * We require a buffer large enough to hold a symbol table count,
776ba7866cdSAli Bahrami * plus one offset for each symbol.
777ba7866cdSAli Bahrami */
778ba7866cdSAli Bahrami tblsize = (nsyms + 1) * eltsize;
779ba7866cdSAli Bahrami if ((buf = dst = malloc(tblsize)) == NULL) {
780ba7866cdSAli Bahrami int err = errno;
781ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_MALLOC), strerror(err));
7827c478bd9Sstevel@tonic-gate exit(1);
7837c478bd9Sstevel@tonic-gate }
784ba7866cdSAli Bahrami
785ba7866cdSAli Bahrami write_member_header(filename, fd, 0,
786ba7866cdSAli Bahrami (is64 ? MSG_ORIG(MSG_STR_SYM64) : MSG_ORIG(MSG_STR_SLASH)),
787ba7866cdSAli Bahrami time(0), 0, 0, 0, tblsize + sym_strtbl.used);
788ba7866cdSAli Bahrami
789ba7866cdSAli Bahrami dst = is64 ? sputl64(nsyms, dst) : sputl32(nsyms, dst);
7907c478bd9Sstevel@tonic-gate
7917c478bd9Sstevel@tonic-gate for (i = 0, j = SYMCHUNK, ptr = symlist; i < nsyms; i++, j--, ptr++) {
7927c478bd9Sstevel@tonic-gate if (!j) {
7937c478bd9Sstevel@tonic-gate j = SYMCHUNK;
7947c478bd9Sstevel@tonic-gate ptr = (ARFILEP *)*ptr;
7957c478bd9Sstevel@tonic-gate }
796ba7866cdSAli Bahrami dst = is64 ? sputl64((*ptr)->ar_offset, dst) :
797ba7866cdSAli Bahrami sputl32((*ptr)->ar_offset, dst);
7987c478bd9Sstevel@tonic-gate }
799ba7866cdSAli Bahrami arwrite(filename, fd, buf, tblsize);
800ba7866cdSAli Bahrami free(buf);
801ba7866cdSAli Bahrami arwrite(filename, fd, sym_strtbl.base, sym_strtbl.used);
802ba7866cdSAli Bahrami }
803ba7866cdSAli Bahrami
804ba7866cdSAli Bahrami /*
805ba7866cdSAli Bahrami * Grow the size of the given string table so that there is room
806ba7866cdSAli Bahrami * for at least need bytes.
807ba7866cdSAli Bahrami *
808ba7866cdSAli Bahrami * entry:
809ba7866cdSAli Bahrami * strtbl - String table to grow
810ba7866cdSAli Bahrami * need - Amount of space required by caller
811ba7866cdSAli Bahrami */
812ba7866cdSAli Bahrami static void
strtbl_alloc(ARSTRTBL * strtbl,size_t need)813ba7866cdSAli Bahrami strtbl_alloc(ARSTRTBL *strtbl, size_t need)
814ba7866cdSAli Bahrami {
815ba7866cdSAli Bahrami #define STRTBL_INITSZ 8196
816ba7866cdSAli Bahrami
817ba7866cdSAli Bahrami /*
818ba7866cdSAli Bahrami * On 32-bit systems, we require a larger integer type in order
819ba7866cdSAli Bahrami * to avoid overflow and wraparound when doing our computations.
820ba7866cdSAli Bahrami */
821ba7866cdSAli Bahrami uint64_t need64 = need;
822ba7866cdSAli Bahrami uint64_t used64 = strtbl->used;
823ba7866cdSAli Bahrami uint64_t size64 = strtbl->size;
824ba7866cdSAli Bahrami uint64_t target = need64 + used64;
825ba7866cdSAli Bahrami
826ba7866cdSAli Bahrami int sys32, tbl32;
827ba7866cdSAli Bahrami
828ba7866cdSAli Bahrami if (target <= size64)
829ba7866cdSAli Bahrami return;
830ba7866cdSAli Bahrami
831ba7866cdSAli Bahrami /*
832ba7866cdSAli Bahrami * Detect 32-bit system. We might usually do this with the preprocessor,
833ba7866cdSAli Bahrami * but it can serve as a predicate in tests that also apply to 64-bit
834ba7866cdSAli Bahrami * systems.
835ba7866cdSAli Bahrami */
836ba7866cdSAli Bahrami sys32 = (sizeof (size_t) == 4);
837ba7866cdSAli Bahrami
838ba7866cdSAli Bahrami /*
839ba7866cdSAli Bahrami * The symbol string table can be larger than 32-bits on a 64-bit
840ba7866cdSAli Bahrami * system. However, the long name table must stay below that limit.
841ba7866cdSAli Bahrami * The reason for this is that there is not enough room in the ar_name
842ba7866cdSAli Bahrami * field of the member header to represent 64-bit offsets.
843ba7866cdSAli Bahrami */
844ba7866cdSAli Bahrami tbl32 = (strtbl == &long_strtbl);
8457c478bd9Sstevel@tonic-gate
8467c478bd9Sstevel@tonic-gate /*
847ba7866cdSAli Bahrami * If request is larger than 4GB and we can't do it because we
848ba7866cdSAli Bahrami * are a 32-bit program, or because the table is format limited,
849ba7866cdSAli Bahrami * we can go no further.
8507c478bd9Sstevel@tonic-gate */
851ba7866cdSAli Bahrami if ((target > 0xffffffff) && (sys32 || tbl32))
852ba7866cdSAli Bahrami goto limit_fail;
853ba7866cdSAli Bahrami
854ba7866cdSAli Bahrami /* Default starting size */
855ba7866cdSAli Bahrami if (strtbl->base == NULL)
856ba7866cdSAli Bahrami size64 = STRTBL_INITSZ;
857ba7866cdSAli Bahrami
858ba7866cdSAli Bahrami /*
859ba7866cdSAli Bahrami * Our strategy is to double the size until we find a size that
860ba7866cdSAli Bahrami * exceeds the request. However, if this table cannot exceed 4GB,
861ba7866cdSAli Bahrami * then once we exceed 2GB, we switch to a strategy of taking the
862ba7866cdSAli Bahrami * current request and rounding it up to STRTBL_INITSZ.
863ba7866cdSAli Bahrami */
864ba7866cdSAli Bahrami while (target > size64) {
865ba7866cdSAli Bahrami if ((target > 0x7fffffff) && (sys32 || tbl32)) {
866ba7866cdSAli Bahrami size64 = ((target + STRTBL_INITSZ) / STRTBL_INITSZ) *
867ba7866cdSAli Bahrami STRTBL_INITSZ;
868ba7866cdSAli Bahrami
869ba7866cdSAli Bahrami /*
870ba7866cdSAli Bahrami * If we are so close to the line that this small
871ba7866cdSAli Bahrami * increment exceeds 4GB, give it up.
872ba7866cdSAli Bahrami */
873ba7866cdSAli Bahrami if ((size64 > 0xffffffff) && (sys32 || tbl32))
874ba7866cdSAli Bahrami goto limit_fail;
875ba7866cdSAli Bahrami
876ba7866cdSAli Bahrami break;
877ba7866cdSAli Bahrami }
878ba7866cdSAli Bahrami
879ba7866cdSAli Bahrami size64 *= 2;
8807c478bd9Sstevel@tonic-gate }
8817c478bd9Sstevel@tonic-gate
882ba7866cdSAli Bahrami strtbl->base = realloc(strtbl->base, size64);
883ba7866cdSAli Bahrami if (strtbl->base == NULL) {
884ba7866cdSAli Bahrami int err = errno;
885ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_MALLOC), strerror(err));
886ba7866cdSAli Bahrami exit(1);
887ba7866cdSAli Bahrami }
888ba7866cdSAli Bahrami strtbl->size = (size_t)size64;
889ba7866cdSAli Bahrami return;
890ba7866cdSAli Bahrami
891ba7866cdSAli Bahrami limit_fail:
892ba7866cdSAli Bahrami /*
893ba7866cdSAli Bahrami * Control comes here if we are unable to allocate more than 4GB of
894ba7866cdSAli Bahrami * memory for the string table due to one of the following reasons:
895ba7866cdSAli Bahrami *
896ba7866cdSAli Bahrami * - A 32-bit process is attempting to be larger than 4GB
897ba7866cdSAli Bahrami *
898ba7866cdSAli Bahrami * - A 64-bit process is attempting to grow the long names string
899ba7866cdSAli Bahrami * table beyond the ar format limit of 32-bits.
900ba7866cdSAli Bahrami */
901ba7866cdSAli Bahrami if (sys32)
902ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_MALLOC), strerror(ENOMEM));
903ba7866cdSAli Bahrami else
904ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_ERR_LONGSTRTBLSZ));
905ba7866cdSAli Bahrami exit(1);
906ba7866cdSAli Bahrami
907ba7866cdSAli Bahrami #undef STRTBL_INITSZ
9087c478bd9Sstevel@tonic-gate }
9097c478bd9Sstevel@tonic-gate
910ba7866cdSAli Bahrami /*
911ba7866cdSAli Bahrami * Add the specified number of pad characters to the end of the
912ba7866cdSAli Bahrami * given string table.
913ba7866cdSAli Bahrami *
914ba7866cdSAli Bahrami * entry:
915ba7866cdSAli Bahrami * strtbl - String table to pad
916ba7866cdSAli Bahrami * n - # of pad characters to add
917ba7866cdSAli Bahrami * ch - Pad character to use
918ba7866cdSAli Bahrami */
9197c478bd9Sstevel@tonic-gate static void
strtbl_pad(ARSTRTBL * strtbl,size_t n,int ch)920ba7866cdSAli Bahrami strtbl_pad(ARSTRTBL *strtbl, size_t n, int ch)
9217c478bd9Sstevel@tonic-gate {
922ba7866cdSAli Bahrami if (n == 0)
923ba7866cdSAli Bahrami return;
9247c478bd9Sstevel@tonic-gate
925ba7866cdSAli Bahrami if ((n + strtbl->used) > strtbl->size)
926ba7866cdSAli Bahrami strtbl_alloc(strtbl, n);
9277c478bd9Sstevel@tonic-gate
928ba7866cdSAli Bahrami while (n--)
929ba7866cdSAli Bahrami strtbl->base[strtbl->used++] = ch;
930ba7866cdSAli Bahrami }
9317c478bd9Sstevel@tonic-gate
932ba7866cdSAli Bahrami /*
933ba7866cdSAli Bahrami * Enter a symbol name into the symbol string table.
934ba7866cdSAli Bahrami */
935ba7866cdSAli Bahrami static void
savename(char * symbol)936ba7866cdSAli Bahrami savename(char *symbol)
937ba7866cdSAli Bahrami {
938ba7866cdSAli Bahrami size_t need;
939ba7866cdSAli Bahrami
940ba7866cdSAli Bahrami need = strlen(symbol) + 1;
941ba7866cdSAli Bahrami if ((need + sym_strtbl.used) > sym_strtbl.size)
942ba7866cdSAli Bahrami strtbl_alloc(&sym_strtbl, need);
943ba7866cdSAli Bahrami
944ba7866cdSAli Bahrami (void) strcpy(sym_strtbl.base + sym_strtbl.used, symbol);
945ba7866cdSAli Bahrami sym_strtbl.used += need;
9467c478bd9Sstevel@tonic-gate }
9477c478bd9Sstevel@tonic-gate
948ba7866cdSAli Bahrami /*
949ba7866cdSAli Bahrami * Prepare an archive member with a long (>15 characters) name for
950ba7866cdSAli Bahrami * the output archive.
951ba7866cdSAli Bahrami *
952ba7866cdSAli Bahrami * entry:
953ba7866cdSAli Bahrami * fptr - pointer to archive member with long name
954ba7866cdSAli Bahrami *
955ba7866cdSAli Bahrami * exit:
956ba7866cdSAli Bahrami * The long name is entered into the long name string table,
957ba7866cdSAli Bahrami * and fptr->ar_name has been replaced with the special /xxx
958ba7866cdSAli Bahrami * name used to indicate that the real name is in the string table
959ba7866cdSAli Bahrami * at offset xxx.
960ba7866cdSAli Bahrami */
9617c478bd9Sstevel@tonic-gate static void
savelongname(ARFILE * fptr)962ba7866cdSAli Bahrami savelongname(ARFILE *fptr)
9637c478bd9Sstevel@tonic-gate {
964ba7866cdSAli Bahrami size_t len, need;
965ba7866cdSAli Bahrami char *p;
9667c478bd9Sstevel@tonic-gate
967ba7866cdSAli Bahrami /* Size of new item to add */
968ba7866cdSAli Bahrami len = strlen(fptr->ar_longname);
969ba7866cdSAli Bahrami need = len + 2;
970ba7866cdSAli Bahrami
971ba7866cdSAli Bahrami /* Ensure there's room */
972ba7866cdSAli Bahrami if ((need + long_strtbl.used) > long_strtbl.size)
973ba7866cdSAli Bahrami strtbl_alloc(&long_strtbl, need);
974ba7866cdSAli Bahrami
975ba7866cdSAli Bahrami /*
976ba7866cdSAli Bahrami * Generate the index string to be written into the member header
977ba7866cdSAli Bahrami *
978ba7866cdSAli Bahrami * This will not overflow the ar_name field because that field is
979ba7866cdSAli Bahrami * 16 characters in size, and a 32-bit unsigned value can be formatted
980ba7866cdSAli Bahrami * in 10 characters. Allowing a character for the leading '/', and one
981ba7866cdSAli Bahrami * for the NULL termination, that leaves us with 4 extra spaces.
982ba7866cdSAli Bahrami */
983ba7866cdSAli Bahrami (void) snprintf(fptr->ar_name, sizeof (fptr->ar_name),
984ba7866cdSAli Bahrami MSG_ORIG(MSG_FMT_LLINT), EC_XWORD(long_strtbl.used));
985ba7866cdSAli Bahrami
986ba7866cdSAli Bahrami /*
987ba7866cdSAli Bahrami * Enter long name into reserved spot, terminated with a slash
988ba7866cdSAli Bahrami * and a newline character.
989ba7866cdSAli Bahrami */
990ba7866cdSAli Bahrami p = long_strtbl.base + long_strtbl.used;
991ba7866cdSAli Bahrami long_strtbl.used += need;
992ba7866cdSAli Bahrami (void) strcpy(p, fptr->ar_longname);
993ba7866cdSAli Bahrami p += len;
9947c478bd9Sstevel@tonic-gate *p++ = '/';
9957c478bd9Sstevel@tonic-gate *p++ = '\n';
9967c478bd9Sstevel@tonic-gate }
9977c478bd9Sstevel@tonic-gate
998ba7866cdSAli Bahrami /*
999ba7866cdSAli Bahrami * Determine if the archive we're about to write will exceed the
1000ba7866cdSAli Bahrami * 32-bit limit of 4GB.
1001ba7866cdSAli Bahrami *
1002ba7866cdSAli Bahrami * entry:
1003ba7866cdSAli Bahrami * mksymtab() and mklong_tab() have been called to set up
1004ba7866cdSAli Bahrami * the string tables.
1005ba7866cdSAli Bahrami *
1006ba7866cdSAli Bahrami * exit:
1007ba7866cdSAli Bahrami * Returns TRUE (1) if the 64-bit symbol table is needed, and
1008ba7866cdSAli Bahrami * FALSE (0) otherwise.
1009ba7866cdSAli Bahrami *
1010ba7866cdSAli Bahrami */
1011ba7866cdSAli Bahrami static int
require64(size_t nsyms,int found_obj,size_t longnames)1012ba7866cdSAli Bahrami require64(size_t nsyms, int found_obj, size_t longnames)
1013ba7866cdSAli Bahrami {
1014ba7866cdSAli Bahrami ARFILE *fptr;
1015ba7866cdSAli Bahrami uint64_t size;
1016ba7866cdSAli Bahrami
1017ba7866cdSAli Bahrami /*
1018ba7866cdSAli Bahrami * If there are more than 4GB symbols, we have to use
1019ba7866cdSAli Bahrami * the 64-bit form. Note that longnames cannot exceed 4GB
1020ba7866cdSAli Bahrami * because that symbol table is limited to a length of 4GB by
1021ba7866cdSAli Bahrami * the archive format.
1022ba7866cdSAli Bahrami */
1023ba7866cdSAli Bahrami if (nsyms > 0xffffffff)
1024ba7866cdSAli Bahrami return (1);
1025ba7866cdSAli Bahrami
1026ba7866cdSAli Bahrami /*
1027ba7866cdSAli Bahrami * Make a worst case estimate for the size of the resulting
1028ba7866cdSAli Bahrami * archive by assuming full padding between members.
1029ba7866cdSAli Bahrami */
1030fb25420bSRobert Mustacchi size = SARMAG;
1031ba7866cdSAli Bahrami if (longnames)
1032ba7866cdSAli Bahrami size += sizeof (struct ar_hdr) + long_strtbl.used + PADSZ;
1033ba7866cdSAli Bahrami
1034ba7866cdSAli Bahrami if (found_obj)
1035ba7866cdSAli Bahrami size += sizeof_symtbl(nsyms, found_obj, 4) + PADSZ;
1036ba7866cdSAli Bahrami
1037ba7866cdSAli Bahrami if (size > 0xffffffff)
1038ba7866cdSAli Bahrami return (1);
1039ba7866cdSAli Bahrami
1040ba7866cdSAli Bahrami for (fptr = listhead; fptr; fptr = fptr->ar_next) {
1041ba7866cdSAli Bahrami size += sizeof (struct ar_hdr) + fptr->ar_size + PADSZ;
1042ba7866cdSAli Bahrami
1043ba7866cdSAli Bahrami if (size > 0xffffffff)
1044ba7866cdSAli Bahrami return (1);
1045ba7866cdSAli Bahrami }
1046ba7866cdSAli Bahrami
1047ba7866cdSAli Bahrami /* 32-bit symbol table will suffice */
1048ba7866cdSAli Bahrami return (0);
1049ba7866cdSAli Bahrami }
1050ba7866cdSAli Bahrami
1051ba7866cdSAli Bahrami void
writefile(Cmd_info * cmd_info)10527c478bd9Sstevel@tonic-gate writefile(Cmd_info *cmd_info)
10537c478bd9Sstevel@tonic-gate {
1054ba7866cdSAli Bahrami ARFILE *fptr;
1055ba7866cdSAli Bahrami ARFILEP *symlist = 0;
1056ba7866cdSAli Bahrami size_t longnames;
1057ba7866cdSAli Bahrami size_t nsyms;
1058ba7866cdSAli Bahrami int new_archive = 0;
1059ba7866cdSAli Bahrami char *name = cmd_info->arnam;
1060ba7866cdSAli Bahrami size_t arsize; /* Size of magic # and special members */
1061ba7866cdSAli Bahrami size_t symtbl_eltsize = 4;
1062ba7866cdSAli Bahrami int found_obj = 0;
1063ba7866cdSAli Bahrami int fd;
1064ba7866cdSAli Bahrami off_t off;
1065ba7866cdSAli Bahrami struct stat stbuf, ar_stbuf;
1066ba7866cdSAli Bahrami char pad_bytes[PADSZ];
1067ba7866cdSAli Bahrami size_t pad_cnt;
1068ba7866cdSAli Bahrami int is_elf;
1069ba7866cdSAli Bahrami
1070ba7866cdSAli Bahrami /*
1071ba7866cdSAli Bahrami * Gather the list of symbols and associate each one to the
1072ba7866cdSAli Bahrami * ARFILE descriptor of the object it belongs to. At the same
1073ba7866cdSAli Bahrami * time, tag each ELF object with the appropriate F_CLASSxx
1074ba7866cdSAli Bahrami * flag.
1075ba7866cdSAli Bahrami */
1076ba7866cdSAli Bahrami nsyms = mksymtab(name, &symlist, &found_obj);
1077ba7866cdSAli Bahrami
1078ba7866cdSAli Bahrami /* Generate the string table for long member names */
1079ba7866cdSAli Bahrami longnames = mklong_tab();
1080ba7866cdSAli Bahrami
1081ba7866cdSAli Bahrami /*
1082ba7866cdSAli Bahrami * Will this archive exceed 4GB? If we're a 32-bit process, we can't
1083ba7866cdSAli Bahrami * do it. If we're a 64-bit process, then we'll have to use a
1084ba7866cdSAli Bahrami * 64-bit symbol table.
1085ba7866cdSAli Bahrami */
1086ba7866cdSAli Bahrami if (require64(nsyms, found_obj, longnames)) {
1087ba7866cdSAli Bahrami #ifdef _LP64
1088ba7866cdSAli Bahrami symtbl_eltsize = 8;
1089ba7866cdSAli Bahrami #else
1090ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_TOOBIG4G));
1091ba7866cdSAli Bahrami exit(1);
1092ba7866cdSAli Bahrami #endif
1093ba7866cdSAli Bahrami }
1094ba7866cdSAli Bahrami
1095ba7866cdSAli Bahrami /*
1096ba7866cdSAli Bahrami * If the user requested it, use the 64-bit symbol table even if
1097ba7866cdSAli Bahrami * a 32-bit one would suffice. 32-bit tables are more portable and
1098ba7866cdSAli Bahrami * take up less room, so this feature is primarily for testing.
1099ba7866cdSAli Bahrami */
1100ba7866cdSAli Bahrami if (cmd_info->opt_flgs & S_FLAG)
1101ba7866cdSAli Bahrami symtbl_eltsize = 8;
1102ba7866cdSAli Bahrami
1103ba7866cdSAli Bahrami /*
1104ba7866cdSAli Bahrami * If the first non-special archive member is an ELF object, then we
1105ba7866cdSAli Bahrami * need to arrange for its data to have an alignment of PADSZ. The
1106ba7866cdSAli Bahrami * preceeding special member will be the symbol table, or the long
1107ba7866cdSAli Bahrami * name string table. We pad the string table that precedes the
1108ba7866cdSAli Bahrami * ELF member in order to achive the desired alignment.
1109ba7866cdSAli Bahrami */
1110ba7866cdSAli Bahrami is_elf = listhead && (listhead->ar_flag & (F_CLASS32 | F_CLASS64));
1111ba7866cdSAli Bahrami arsize = SARMAG;
1112ba7866cdSAli Bahrami if (found_obj) {
1113ba7866cdSAli Bahrami arsize += sizeof_symtbl(nsyms, found_obj, symtbl_eltsize);
1114ba7866cdSAli Bahrami if (is_elf && (longnames == 0)) {
1115ba7866cdSAli Bahrami pad_cnt = pad(arsize + sizeof (struct ar_hdr), PADSZ);
1116ba7866cdSAli Bahrami strtbl_pad(&sym_strtbl, pad_cnt, '\0');
1117ba7866cdSAli Bahrami arsize += pad_cnt;
1118d2d5cf7cSAli Bahrami }
1119ba7866cdSAli Bahrami }
1120ba7866cdSAli Bahrami if (longnames > 0) {
1121ba7866cdSAli Bahrami arsize += sizeof (struct ar_hdr) + long_strtbl.used;
1122ba7866cdSAli Bahrami if (is_elf) {
1123ba7866cdSAli Bahrami pad_cnt = pad(arsize + sizeof (struct ar_hdr), PADSZ);
1124ba7866cdSAli Bahrami strtbl_pad(&long_strtbl, pad_cnt, '\0');
1125ba7866cdSAli Bahrami arsize += pad_cnt;
1126ba7866cdSAli Bahrami }
1127ba7866cdSAli Bahrami }
11287c478bd9Sstevel@tonic-gate
11297c478bd9Sstevel@tonic-gate /*
1130ba7866cdSAli Bahrami * For each user visible (non-special) archive member, determine
1131ba7866cdSAli Bahrami * the header offset, and the size of any required padding.
11327c478bd9Sstevel@tonic-gate */
1133ba7866cdSAli Bahrami (void) sizeofmembers(arsize);
11347c478bd9Sstevel@tonic-gate
11357c478bd9Sstevel@tonic-gate /*
1136ba7866cdSAli Bahrami * Is this a new archive, or are we updating an existing one?
1137ba7866cdSAli Bahrami *
1138ba7866cdSAli Bahrami * A subtlety here is that POSIX says we are not supposed
1139ba7866cdSAli Bahrami * to replace a non-writable file. The only 100% reliable test
1140ba7866cdSAli Bahrami * against this is to open the file for non-destructive
1141ba7866cdSAli Bahrami * write access. If the open succeeds, we are clear to
1142ba7866cdSAli Bahrami * replace it, and if not, then the error generated is
1143ba7866cdSAli Bahrami * the error we need to report.
11447c478bd9Sstevel@tonic-gate */
1145ba7866cdSAli Bahrami if ((fd = open(name, O_RDWR)) < 0) {
1146ba7866cdSAli Bahrami int err = errno;
11477c478bd9Sstevel@tonic-gate
1148ba7866cdSAli Bahrami if (err != ENOENT) {
1149ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_SYS_OPEN),
1150ba7866cdSAli Bahrami name, strerror(err));
1151ba7866cdSAli Bahrami exit(1);
1152ba7866cdSAli Bahrami }
1153ba7866cdSAli Bahrami new_archive = 1;
1154ba7866cdSAli Bahrami if ((cmd_info->opt_flgs & c_FLAG) == 0) {
1155ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_BER_MES_CREATE),
1156ba7866cdSAli Bahrami cmd_info->arnam);
1157ba7866cdSAli Bahrami }
11587c478bd9Sstevel@tonic-gate } else {
1159ba7866cdSAli Bahrami /* Capture mode and owner information to apply to replacement */
1160ba7866cdSAli Bahrami if (fstat(fd, &ar_stbuf) < 0) {
1161ba7866cdSAli Bahrami int err = errno;
1162ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_SYS_STAT),
1163ba7866cdSAli Bahrami name, strerror(err));
1164ba7866cdSAli Bahrami (void) close(fd);
1165ba7866cdSAli Bahrami exit(1);
1166ba7866cdSAli Bahrami }
1167ba7866cdSAli Bahrami (void) close(fd);
1168ba7866cdSAli Bahrami new_archive = 0;
11697c478bd9Sstevel@tonic-gate }
11707c478bd9Sstevel@tonic-gate
11717c478bd9Sstevel@tonic-gate
1172ba7866cdSAli Bahrami /*
1173ba7866cdSAli Bahrami * Register exit handler function to clean up after us if we exit
1174ba7866cdSAli Bahrami * before completing the new archive. atexit() is defined as
1175ba7866cdSAli Bahrami * only being able to fail due to memory exhaustion.
1176ba7866cdSAli Bahrami */
1177ba7866cdSAli Bahrami if (atexit(exit_cleanup) != 0) {
1178ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_MALLOC), strerror(ENOMEM));
1179ba7866cdSAli Bahrami exit(1);
1180ba7866cdSAli Bahrami }
1181ba7866cdSAli Bahrami
1182ba7866cdSAli Bahrami /*
1183ba7866cdSAli Bahrami * If a new archive, create it in place. If updating an archive,
1184ba7866cdSAli Bahrami * create the replacement under a temporary name and then rename it
1185ba7866cdSAli Bahrami * into place.
1186ba7866cdSAli Bahrami */
1187ba7866cdSAli Bahrami ar_outfile.path = new_archive ? name : make_tmpname(name);
1188ba7866cdSAli Bahrami ar_outfile.fd = open(ar_outfile.path, O_RDWR|O_CREAT|O_LARGEFILE, 0666);
1189ba7866cdSAli Bahrami if (ar_outfile.fd == -1) {
1190ba7866cdSAli Bahrami int err = errno;
1191*11029d9dSRobert Mustacchi (void) fprintf(stderr, new_archive ?
1192*11029d9dSRobert Mustacchi MSG_INTL(MSG_BAD_CREATE) : MSG_INTL(MSG_SYS_OPEN),
1193ba7866cdSAli Bahrami ar_outfile.path, strerror(err));
1194ba7866cdSAli Bahrami exit(1);
11957c478bd9Sstevel@tonic-gate }
11967c478bd9Sstevel@tonic-gate
1197ba7866cdSAli Bahrami /* Output magic string */
1198ba7866cdSAli Bahrami arwrite(name, ar_outfile.fd, ARMAG, SARMAG);
1199ba7866cdSAli Bahrami
1200ba7866cdSAli Bahrami /*
1201ba7866cdSAli Bahrami * The symbol table member is always first if present. Note that
1202ba7866cdSAli Bahrami * writesymtab() uses the member offsets computed by sizeofmembers()
1203ba7866cdSAli Bahrami * above.
1204ba7866cdSAli Bahrami */
1205ba7866cdSAli Bahrami if (found_obj)
1206ba7866cdSAli Bahrami writesymtab(name, ar_outfile.fd, nsyms, symlist,
1207ba7866cdSAli Bahrami symtbl_eltsize);
1208ba7866cdSAli Bahrami
12097c478bd9Sstevel@tonic-gate if (longnames) {
1210ba7866cdSAli Bahrami write_member_header(name, ar_outfile.fd, 0,
1211ba7866cdSAli Bahrami MSG_ORIG(MSG_STR_DSLASH), time(0), 0, 0, 0,
1212ba7866cdSAli Bahrami long_strtbl.used);
1213ba7866cdSAli Bahrami arwrite(name, ar_outfile.fd, long_strtbl.base,
1214ba7866cdSAli Bahrami long_strtbl.used);
12157c478bd9Sstevel@tonic-gate }
12167c478bd9Sstevel@tonic-gate
12177c478bd9Sstevel@tonic-gate /*
1218ba7866cdSAli Bahrami * The accuracy of the symbol table depends on our having calculated
1219ba7866cdSAli Bahrami * the size of the archive accurately to this point. If this is a
1220ba7866cdSAli Bahrami * debug build, verify it.
12217c478bd9Sstevel@tonic-gate */
1222ba7866cdSAli Bahrami assert(arsize == lseek(ar_outfile.fd, 0, SEEK_CUR));
1223ba7866cdSAli Bahrami
1224ba7866cdSAli Bahrami #ifndef XPG4
1225ba7866cdSAli Bahrami if (cmd_info->opt_flgs & v_FLAG) {
1226ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_BER_MES_WRITE),
1227ba7866cdSAli Bahrami cmd_info->arnam);
1228ba7866cdSAli Bahrami }
1229ba7866cdSAli Bahrami #endif
1230ba7866cdSAli Bahrami
1231ba7866cdSAli Bahrami /*
1232ba7866cdSAli Bahrami * Fill pad_bytes array with newline characters. This array
1233ba7866cdSAli Bahrami * is used to supply padding bytes at the end of ELF objects.
1234ba7866cdSAli Bahrami * There can never be more tha PADSZ such bytes, so this number
1235ba7866cdSAli Bahrami * will always suffice.
1236ba7866cdSAli Bahrami */
1237ba7866cdSAli Bahrami for (pad_cnt = 0; pad_cnt < PADSZ; pad_cnt++)
1238ba7866cdSAli Bahrami pad_bytes[pad_cnt] = '\n';
1239ba7866cdSAli Bahrami
1240ba7866cdSAli Bahrami for (fptr = listhead; fptr; fptr = fptr->ar_next) {
1241ba7866cdSAli Bahrami /*
1242ba7866cdSAli Bahrami * We computed the expected offset for each ELF member and
1243ba7866cdSAli Bahrami * used those offsets to fill the symbol table. If this is
1244ba7866cdSAli Bahrami * a debug build, verify that the computed offset was right.
1245ba7866cdSAli Bahrami */
1246ba7866cdSAli Bahrami is_elf = (fptr->ar_flag & (F_CLASS32 | F_CLASS64)) != 0;
1247ba7866cdSAli Bahrami assert(!is_elf ||
1248ba7866cdSAli Bahrami (fptr->ar_offset == lseek(ar_outfile.fd, 0, SEEK_CUR)));
1249ba7866cdSAli Bahrami
1250ba7866cdSAli Bahrami /*
1251ba7866cdSAli Bahrami * NOTE:
1252ba7866cdSAli Bahrami * The mem_header->ar_name[] is set to a NULL string
1253ba7866cdSAli Bahrami * if the archive member header has some error.
1254ba7866cdSAli Bahrami * (See elf_getarhdr() man page.)
1255ba7866cdSAli Bahrami * It is set to NULL for example, the ar command reads
1256ba7866cdSAli Bahrami * the archive files created by SunOS 4.1 system.
1257ba7866cdSAli Bahrami * See c block comment in cmd.c, "Incompatible Archive Header".
1258ba7866cdSAli Bahrami */
12597c478bd9Sstevel@tonic-gate if (fptr->ar_name[0] == 0) {
12607c478bd9Sstevel@tonic-gate fptr->ar_longname = fptr->ar_rawname;
12617c478bd9Sstevel@tonic-gate (void) strncpy(fptr->ar_name, fptr->ar_rawname, SNAME);
12627c478bd9Sstevel@tonic-gate }
1263ba7866cdSAli Bahrami write_member_header(name, ar_outfile.fd, is_elf,
1264ba7866cdSAli Bahrami (strlen(fptr->ar_longname) <= (unsigned)SNAME-2) ?
1265ba7866cdSAli Bahrami trimslash(fptr->ar_longname) : fptr->ar_name,
1266ba7866cdSAli Bahrami EC_WORD(fptr->ar_date), fptr->ar_uid, fptr->ar_gid,
1267ba7866cdSAli Bahrami fptr->ar_mode, fptr->ar_size + fptr->ar_padding);
1268ba7866cdSAli Bahrami
1269ba7866cdSAli Bahrami
1270ba7866cdSAli Bahrami if ((fptr->ar_flag & F_ELFRAW) == 0) {
1271ba7866cdSAli Bahrami /*
1272ba7866cdSAli Bahrami * The file doesn't come from the archive, and is
1273ba7866cdSAli Bahrami * therefore not already in memory(fptr->ar_contents)
1274ba7866cdSAli Bahrami * so open it and do a direct file-to-file transfer of
1275ba7866cdSAli Bahrami * its contents. We use the sendfile() system call
1276ba7866cdSAli Bahrami * to make the kernel do the transfer, so we don't have
1277ba7866cdSAli Bahrami * to buffer data in process, and we trust that the
1278ba7866cdSAli Bahrami * kernel will use an optimal transfer strategy.
1279ba7866cdSAli Bahrami */
1280ba7866cdSAli Bahrami if ((fd = open(fptr->ar_pathname, O_RDONLY)) == -1) {
1281ba7866cdSAli Bahrami int err = errno;
1282ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_SYS_OPEN),
1283ba7866cdSAli Bahrami fptr->ar_longname, strerror(err));
1284ba7866cdSAli Bahrami exit(1);
1285ba7866cdSAli Bahrami }
1286ba7866cdSAli Bahrami if (stat(fptr->ar_pathname, &stbuf) < 0) {
1287ba7866cdSAli Bahrami int err = errno;
1288ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_SYS_OPEN),
1289ba7866cdSAli Bahrami fptr->ar_longname, strerror(err));
1290ba7866cdSAli Bahrami (void) close(fd);
12917c478bd9Sstevel@tonic-gate exit(1);
12927c478bd9Sstevel@tonic-gate }
1293ba7866cdSAli Bahrami off = 0;
1294ba7866cdSAli Bahrami if (sendfile(ar_outfile.fd, fd, &off,
1295ba7866cdSAli Bahrami stbuf.st_size) != stbuf.st_size) {
1296ba7866cdSAli Bahrami int err = errno;
1297ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_SYS_WRITE),
1298ba7866cdSAli Bahrami name, strerror(err));
1299ba7866cdSAli Bahrami exit(2);
1300ba7866cdSAli Bahrami }
1301ba7866cdSAli Bahrami (void) close(fd);
13027c478bd9Sstevel@tonic-gate } else {
1303ba7866cdSAli Bahrami /* Archive member is in memory. Write it out */
1304ba7866cdSAli Bahrami arwrite(name, ar_outfile.fd, fptr->ar_contents,
1305d2d5cf7cSAli Bahrami fptr->ar_size);
13067c478bd9Sstevel@tonic-gate }
13077c478bd9Sstevel@tonic-gate
1308ba7866cdSAli Bahrami /*
1309ba7866cdSAli Bahrami * All archive members are padded to at least a boundary of 2.
1310ba7866cdSAli Bahrami * The expression ((fptr->ar_size & 0x1) != 0) yields 1 for
1311ba7866cdSAli Bahrami * odd boundaries, and 0 for even ones. To this, we add
1312ba7866cdSAli Bahrami * whatever padding is needed for ELF objects.
1313ba7866cdSAli Bahrami */
1314ba7866cdSAli Bahrami pad_cnt = ((fptr->ar_size & 0x1) != 0) + fptr->ar_padding;
1315ba7866cdSAli Bahrami if (pad_cnt > 0)
1316ba7866cdSAli Bahrami arwrite(name, ar_outfile.fd, pad_bytes, pad_cnt);
13177c478bd9Sstevel@tonic-gate }
13187c478bd9Sstevel@tonic-gate
13197c478bd9Sstevel@tonic-gate /*
1320ba7866cdSAli Bahrami * All archive output is done.
13217c478bd9Sstevel@tonic-gate */
1322ba7866cdSAli Bahrami if (close(ar_outfile.fd) < 0) {
1323ba7866cdSAli Bahrami int err = errno;
1324ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_SYS_CLOSE), ar_outfile.path,
1325ba7866cdSAli Bahrami strerror(err));
1326ba7866cdSAli Bahrami exit(1);
1327ba7866cdSAli Bahrami }
1328ba7866cdSAli Bahrami ar_outfile.fd = -1; /* Prevent removal on exit */
13297c478bd9Sstevel@tonic-gate (void) elf_end(cmd_info->arf);
13307c478bd9Sstevel@tonic-gate (void) close(cmd_info->afd);
13317c478bd9Sstevel@tonic-gate
13327c478bd9Sstevel@tonic-gate /*
1333ba7866cdSAli Bahrami * If updating an existing archive, rename the new version on
1334ba7866cdSAli Bahrami * top of the original.
13357c478bd9Sstevel@tonic-gate */
1336ba7866cdSAli Bahrami if (!new_archive) {
13377c478bd9Sstevel@tonic-gate /*
1338ba7866cdSAli Bahrami * Prevent the replacement of the original archive from
1339ba7866cdSAli Bahrami * being interrupted, to lower the possibility of an
1340ba7866cdSAli Bahrami * interrupt destroying a pre-existing archive.
13417c478bd9Sstevel@tonic-gate */
1342ba7866cdSAli Bahrami establish_sighandler(SIG_IGN);
1343ba7866cdSAli Bahrami
1344ba7866cdSAli Bahrami if (rename(ar_outfile.path, name) < 0) {
1345ba7866cdSAli Bahrami int err = errno;
1346ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_SYS_RENAME),
1347ba7866cdSAli Bahrami ar_outfile.path, name, strerror(err));
1348ba7866cdSAli Bahrami (void) unlink(ar_outfile.path);
13497c478bd9Sstevel@tonic-gate exit(1);
13507c478bd9Sstevel@tonic-gate }
1351ba7866cdSAli Bahrami (void) chmod(name, ar_stbuf.st_mode & 0777);
1352ba7866cdSAli Bahrami if (chown(name, ar_stbuf.st_uid, ar_stbuf.st_gid) >= 0)
1353ba7866cdSAli Bahrami (void) chmod(name, ar_stbuf.st_mode & 07777);
1354ba7866cdSAli Bahrami
13557c478bd9Sstevel@tonic-gate }
13567c478bd9Sstevel@tonic-gate }
13577c478bd9Sstevel@tonic-gate
1358ba7866cdSAli Bahrami /*
1359ba7866cdSAli Bahrami * Examine all the archive members, enter any member names longer than
1360ba7866cdSAli Bahrami * 15 characters into the long name string table, and count the number
1361ba7866cdSAli Bahrami * of names found.
1362ba7866cdSAli Bahrami *
1363ba7866cdSAli Bahrami * Returns the size of the resulting archive member, including the
1364ba7866cdSAli Bahrami * member header.
1365ba7866cdSAli Bahrami */
1366ba7866cdSAli Bahrami static size_t
mklong_tab(void)1367ba7866cdSAli Bahrami mklong_tab(void)
13687c478bd9Sstevel@tonic-gate {
13697c478bd9Sstevel@tonic-gate ARFILE *fptr;
1370ba7866cdSAli Bahrami size_t longnames = 0;
13717c478bd9Sstevel@tonic-gate
13727c478bd9Sstevel@tonic-gate for (fptr = listhead; fptr; fptr = fptr->ar_next) {
13737c478bd9Sstevel@tonic-gate if (strlen(fptr->ar_longname) >= (unsigned)SNAME-1) {
1374ba7866cdSAli Bahrami longnames++;
1375ba7866cdSAli Bahrami savelongname(fptr);
13767c478bd9Sstevel@tonic-gate }
13777c478bd9Sstevel@tonic-gate }
1378ba7866cdSAli Bahrami
1379ba7866cdSAli Bahrami /* round up table that keeps the long filenames */
1380ba7866cdSAli Bahrami if (longnames > 0)
1381ba7866cdSAli Bahrami strtbl_pad(&long_strtbl, pad(long_strtbl.used, 4), '\n');
1382ba7866cdSAli Bahrami
1383ba7866cdSAli Bahrami return (longnames);
13847c478bd9Sstevel@tonic-gate }
13857c478bd9Sstevel@tonic-gate
1386ba7866cdSAli Bahrami /*
1387ba7866cdSAli Bahrami * Write 32/64-bit words into buffer in archive symbol table
1388ba7866cdSAli Bahrami * standard byte order (MSB).
1389ba7866cdSAli Bahrami */
1390ba7866cdSAli Bahrami static char *
sputl32(uint32_t n,char * cp)1391ba7866cdSAli Bahrami sputl32(uint32_t n, char *cp)
1392ba7866cdSAli Bahrami {
1393ba7866cdSAli Bahrami *cp++ = n >> 24;
1394ba7866cdSAli Bahrami *cp++ = n >> 16;
1395ba7866cdSAli Bahrami *cp++ = n >> 8;
13967c478bd9Sstevel@tonic-gate
1397ba7866cdSAli Bahrami *cp++ = n & 255;
1398ba7866cdSAli Bahrami
1399ba7866cdSAli Bahrami return (cp);
1400ba7866cdSAli Bahrami }
1401ba7866cdSAli Bahrami
1402ba7866cdSAli Bahrami static char *
sputl64(uint64_t n,char * cp)1403ba7866cdSAli Bahrami sputl64(uint64_t n, char *cp)
14047c478bd9Sstevel@tonic-gate {
1405ba7866cdSAli Bahrami *cp++ = n >> 56;
1406ba7866cdSAli Bahrami *cp++ = n >> 48;
1407ba7866cdSAli Bahrami *cp++ = n >> 40;
1408ba7866cdSAli Bahrami *cp++ = n >> 32;
1409ba7866cdSAli Bahrami
14107c478bd9Sstevel@tonic-gate *cp++ = n >> 24;
14117c478bd9Sstevel@tonic-gate *cp++ = n >> 16;
14127c478bd9Sstevel@tonic-gate *cp++ = n >> 8;
14137c478bd9Sstevel@tonic-gate
14147c478bd9Sstevel@tonic-gate *cp++ = n & 255;
1415ba7866cdSAli Bahrami
1416ba7866cdSAli Bahrami return (cp);
14177c478bd9Sstevel@tonic-gate }
14187c478bd9Sstevel@tonic-gate
14197c478bd9Sstevel@tonic-gate static int
search_sym_tab(const char * arname,ARFILE * fptr,Elf * elf,Elf_Scn * scn,size_t * nsyms,ARFILEP ** symlist,size_t * num_errs)1420ba7866cdSAli Bahrami search_sym_tab(const char *arname, ARFILE *fptr, Elf *elf, Elf_Scn *scn,
1421fb25420bSRobert Mustacchi size_t *nsyms, ARFILEP **symlist, size_t *num_errs)
14227c478bd9Sstevel@tonic-gate {
14237c478bd9Sstevel@tonic-gate Elf_Data *str_data, *sym_data; /* string table, symbol table */
14247c478bd9Sstevel@tonic-gate Elf_Scn *str_scn;
14257c478bd9Sstevel@tonic-gate GElf_Sxword no_of_symbols;
14267c478bd9Sstevel@tonic-gate GElf_Shdr shdr;
14277c478bd9Sstevel@tonic-gate int counter;
14287c478bd9Sstevel@tonic-gate int str_shtype;
14297c478bd9Sstevel@tonic-gate char *symname;
14307c478bd9Sstevel@tonic-gate static ARFILEP *sym_ptr = 0;
14317c478bd9Sstevel@tonic-gate static ARFILEP *nextsym = NULL;
14327c478bd9Sstevel@tonic-gate static int syms_left = 0;
14337c478bd9Sstevel@tonic-gate char *fname = fptr->ar_pathname;
14347c478bd9Sstevel@tonic-gate
14357c478bd9Sstevel@tonic-gate (void) gelf_getshdr(scn, &shdr);
14367c478bd9Sstevel@tonic-gate str_scn = elf_getscn(elf, shdr.sh_link); /* index for string table */
14377c478bd9Sstevel@tonic-gate if (str_scn == NULL) {
14387c478bd9Sstevel@tonic-gate if (fname != NULL)
1439ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_ELF_GETDATA_FILE),
1440ba7866cdSAli Bahrami fname, elf_errmsg(-1));
14417c478bd9Sstevel@tonic-gate else
1442ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_ELF_GETDATA_AR),
1443ba7866cdSAli Bahrami arname, fptr->ar_longname, elf_errmsg(-1));
14447c478bd9Sstevel@tonic-gate (*num_errs)++;
14457c478bd9Sstevel@tonic-gate return (-1);
14467c478bd9Sstevel@tonic-gate }
14477c478bd9Sstevel@tonic-gate
14487c478bd9Sstevel@tonic-gate no_of_symbols = shdr.sh_size / shdr.sh_entsize;
14497c478bd9Sstevel@tonic-gate if (no_of_symbols == -1) {
1450ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_SYMTAB_01));
14517c478bd9Sstevel@tonic-gate return (-1);
14527c478bd9Sstevel@tonic-gate }
14537c478bd9Sstevel@tonic-gate
14547c478bd9Sstevel@tonic-gate (void) gelf_getshdr(str_scn, &shdr);
14557c478bd9Sstevel@tonic-gate str_shtype = shdr.sh_type;
14567c478bd9Sstevel@tonic-gate if (str_shtype == -1) {
14577c478bd9Sstevel@tonic-gate if (fname != NULL)
1458ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_ELF_GETDATA_FILE),
1459ba7866cdSAli Bahrami fname, elf_errmsg(-1));
14607c478bd9Sstevel@tonic-gate else
1461ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_ELF_GETDATA_AR),
1462ba7866cdSAli Bahrami arname, fptr->ar_longname, elf_errmsg(-1));
14637c478bd9Sstevel@tonic-gate (*num_errs)++;
14647c478bd9Sstevel@tonic-gate return (-1);
14657c478bd9Sstevel@tonic-gate }
14667c478bd9Sstevel@tonic-gate
14677c478bd9Sstevel@tonic-gate /* This test must happen before testing the string table. */
14687c478bd9Sstevel@tonic-gate if (no_of_symbols == 1)
14697c478bd9Sstevel@tonic-gate return (0); /* no symbols; 0th symbol is the non-symbol */
14707c478bd9Sstevel@tonic-gate
14717c478bd9Sstevel@tonic-gate if (str_shtype != SHT_STRTAB) {
14727c478bd9Sstevel@tonic-gate if (fname != NULL)
1473ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_SYMTAB_NOSTR_FILE),
1474d2d5cf7cSAli Bahrami fname);
14757c478bd9Sstevel@tonic-gate else
1476ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_SYMTAB_NOSTR_AR),
1477ba7866cdSAli Bahrami arname, fptr->ar_longname);
14787c478bd9Sstevel@tonic-gate return (0);
14797c478bd9Sstevel@tonic-gate }
14807c478bd9Sstevel@tonic-gate str_data = 0;
14817c478bd9Sstevel@tonic-gate if ((str_data = elf_getdata(str_scn, str_data)) == 0) {
14827c478bd9Sstevel@tonic-gate if (fname != NULL)
1483ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_SYMTAB_NODAT_FILE),
1484d2d5cf7cSAli Bahrami fname);
14857c478bd9Sstevel@tonic-gate else
1486ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_SYMTAB_NODAT_AR),
1487ba7866cdSAli Bahrami arname, fptr->ar_longname);
14887c478bd9Sstevel@tonic-gate return (0);
14897c478bd9Sstevel@tonic-gate }
14907c478bd9Sstevel@tonic-gate if (str_data->d_size == 0) {
14917c478bd9Sstevel@tonic-gate if (fname != NULL)
1492ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_SYMTAB_ZDAT_FILE),
1493d2d5cf7cSAli Bahrami fname);
14947c478bd9Sstevel@tonic-gate else
1495ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_SYMTAB_ZDAT_AR),
1496ba7866cdSAli Bahrami arname, fptr->ar_longname);
14977c478bd9Sstevel@tonic-gate return (0);
14987c478bd9Sstevel@tonic-gate }
14997c478bd9Sstevel@tonic-gate sym_data = 0;
15007c478bd9Sstevel@tonic-gate if ((sym_data = elf_getdata(scn, sym_data)) == NULL) {
15017c478bd9Sstevel@tonic-gate if (fname != NULL)
1502ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_ELF_LIB_FILE),
1503d2d5cf7cSAli Bahrami fname, elf_errmsg(-1));
15047c478bd9Sstevel@tonic-gate else
1505ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_ELF_LIB_AR),
1506ba7866cdSAli Bahrami arname, fptr->ar_longname, elf_errmsg(-1));
15077c478bd9Sstevel@tonic-gate return (0);
15087c478bd9Sstevel@tonic-gate }
15097c478bd9Sstevel@tonic-gate
15107c478bd9Sstevel@tonic-gate /* start at 1, first symbol entry is ignored */
15117c478bd9Sstevel@tonic-gate for (counter = 1; counter < no_of_symbols; counter++) {
15127c478bd9Sstevel@tonic-gate GElf_Sym sym;
15137c478bd9Sstevel@tonic-gate (void) gelf_getsym(sym_data, counter, &sym);
15147c478bd9Sstevel@tonic-gate
15157c478bd9Sstevel@tonic-gate symname = (char *)(str_data->d_buf) + sym.st_name;
15167c478bd9Sstevel@tonic-gate
15177c478bd9Sstevel@tonic-gate if (((GELF_ST_BIND(sym.st_info) == STB_GLOBAL) ||
1518d2d5cf7cSAli Bahrami (GELF_ST_BIND(sym.st_info) == STB_WEAK)) &&
1519d2d5cf7cSAli Bahrami (sym.st_shndx != SHN_UNDEF)) {
15207c478bd9Sstevel@tonic-gate if (!syms_left) {
15217c478bd9Sstevel@tonic-gate sym_ptr = malloc((SYMCHUNK+1)
1522d2d5cf7cSAli Bahrami * sizeof (ARFILEP));
15237c478bd9Sstevel@tonic-gate if (sym_ptr == NULL) {
1524ba7866cdSAli Bahrami int err = errno;
1525ba7866cdSAli Bahrami (void) fprintf(stderr,
1526ba7866cdSAli Bahrami MSG_INTL(MSG_MALLOC),
1527ba7866cdSAli Bahrami strerror(err));
15287c478bd9Sstevel@tonic-gate exit(1);
15297c478bd9Sstevel@tonic-gate }
15307c478bd9Sstevel@tonic-gate syms_left = SYMCHUNK;
15317c478bd9Sstevel@tonic-gate if (nextsym)
15327c478bd9Sstevel@tonic-gate *nextsym = (ARFILEP)sym_ptr;
15337c478bd9Sstevel@tonic-gate else
15347c478bd9Sstevel@tonic-gate *symlist = sym_ptr;
15357c478bd9Sstevel@tonic-gate nextsym = sym_ptr;
15367c478bd9Sstevel@tonic-gate }
15377c478bd9Sstevel@tonic-gate sym_ptr = nextsym;
15387c478bd9Sstevel@tonic-gate nextsym++;
15397c478bd9Sstevel@tonic-gate syms_left--;
15407c478bd9Sstevel@tonic-gate (*nsyms)++;
15417c478bd9Sstevel@tonic-gate *sym_ptr = fptr;
15427c478bd9Sstevel@tonic-gate savename(symname); /* put name in the archiver's */
15437c478bd9Sstevel@tonic-gate /* symbol table string table */
15447c478bd9Sstevel@tonic-gate }
15457c478bd9Sstevel@tonic-gate }
15467c478bd9Sstevel@tonic-gate return (0);
15477c478bd9Sstevel@tonic-gate }
15487c478bd9Sstevel@tonic-gate
15497c478bd9Sstevel@tonic-gate /*
15507c478bd9Sstevel@tonic-gate * Get the output file size
15517c478bd9Sstevel@tonic-gate */
1552ba7866cdSAli Bahrami static size_t
sizeofmembers(size_t psum)1553ba7866cdSAli Bahrami sizeofmembers(size_t psum)
15547c478bd9Sstevel@tonic-gate {
1555ba7866cdSAli Bahrami size_t sum = 0;
1556ba7866cdSAli Bahrami ARFILE *fptr;
1557ba7866cdSAli Bahrami size_t hdrsize = sizeof (struct ar_hdr);
15587c478bd9Sstevel@tonic-gate
15597c478bd9Sstevel@tonic-gate for (fptr = listhead; fptr; fptr = fptr->ar_next) {
15607c478bd9Sstevel@tonic-gate fptr->ar_offset = psum + sum;
15617c478bd9Sstevel@tonic-gate sum += fptr->ar_size;
15627c478bd9Sstevel@tonic-gate if (fptr->ar_size & 01)
15637c478bd9Sstevel@tonic-gate sum++;
15647c478bd9Sstevel@tonic-gate sum += hdrsize;
15657c478bd9Sstevel@tonic-gate
156660fc76daSab /*
156760fc76daSab * If the current item, and the next item are both ELF
156860fc76daSab * objects, then add padding to current item so that the
1569ba7866cdSAli Bahrami * data in the next item will have PADSZ alignment.
157060fc76daSab *
157160fc76daSab * In any other case, set the padding to 0. If the
157260fc76daSab * item comes from another archive, it may be carrying
157360fc76daSab * a non-zero padding value from that archive that does
157460fc76daSab * not apply to the one we are about to build.
157560fc76daSab */
15767c478bd9Sstevel@tonic-gate if ((fptr->ar_flag & (F_CLASS32 | F_CLASS64)) &&
15779d6538abSab fptr->ar_next &&
15789d6538abSab (fptr->ar_next->ar_flag & (F_CLASS32 | F_CLASS64))) {
1579ba7866cdSAli Bahrami fptr->ar_padding = pad(psum + sum + hdrsize, PADSZ);
15809d6538abSab sum += fptr->ar_padding;
158160fc76daSab } else {
158260fc76daSab fptr->ar_padding = 0;
15837c478bd9Sstevel@tonic-gate }
15847c478bd9Sstevel@tonic-gate }
15857c478bd9Sstevel@tonic-gate return (sum);
15867c478bd9Sstevel@tonic-gate }
15877c478bd9Sstevel@tonic-gate
1588ba7866cdSAli Bahrami /*
1589ba7866cdSAli Bahrami * Compute the size of the symbol table archive member.
1590ba7866cdSAli Bahrami *
1591ba7866cdSAli Bahrami * entry:
1592ba7866cdSAli Bahrami * nsyms - # of symbols in the table
1593ba7866cdSAli Bahrami * found_obj - TRUE if the archive contains any ELF objects
1594ba7866cdSAli Bahrami * eltsize - Size of the integer type to use for the symbol
1595ba7866cdSAli Bahrami * table. 4 for 32-bit tables, and 8 for 64-bit tables.
1596ba7866cdSAli Bahrami */
1597ba7866cdSAli Bahrami static size_t
sizeof_symtbl(size_t nsyms,int found_obj,size_t eltsize)1598ba7866cdSAli Bahrami sizeof_symtbl(size_t nsyms, int found_obj, size_t eltsize)
15997c478bd9Sstevel@tonic-gate {
1600ba7866cdSAli Bahrami size_t sum = 0;
16017c478bd9Sstevel@tonic-gate
1602ba7866cdSAli Bahrami if (found_obj) {
1603ba7866cdSAli Bahrami /* Member header, symbol count, and one slot per symbol */
1604ba7866cdSAli Bahrami sum += sizeof (struct ar_hdr) + ((nsyms + 1) * eltsize);
1605ba7866cdSAli Bahrami sum += sym_strtbl.used;
16067c478bd9Sstevel@tonic-gate }
16077c478bd9Sstevel@tonic-gate
16087c478bd9Sstevel@tonic-gate return (sum);
16097c478bd9Sstevel@tonic-gate }
16107c478bd9Sstevel@tonic-gate
16117c478bd9Sstevel@tonic-gate static void
arwrite(const char * name,int nfd,const char * dst,size_t size)1612fb25420bSRobert Mustacchi arwrite(const char *name, int nfd, const char *dst, size_t size)
1613fb25420bSRobert Mustacchi {
16147c478bd9Sstevel@tonic-gate if (write(nfd, dst, size) != size) {
1615ba7866cdSAli Bahrami int err = errno;
1616ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_SYS_WRITE),
1617ba7866cdSAli Bahrami name, strerror(err));
16187c478bd9Sstevel@tonic-gate exit(2);
16197c478bd9Sstevel@tonic-gate }
16207c478bd9Sstevel@tonic-gate }
16217c478bd9Sstevel@tonic-gate
1622ba7866cdSAli Bahrami static const char *
make_tmpname(const char * filename)1623fb25420bSRobert Mustacchi make_tmpname(const char *filename)
1624fb25420bSRobert Mustacchi {
1625ba7866cdSAli Bahrami char *slash, *tmpname;
1626ba7866cdSAli Bahrami size_t prefix_cnt = 0;
16277c478bd9Sstevel@tonic-gate
16287c478bd9Sstevel@tonic-gate /*
1629ba7866cdSAli Bahrami * If there is a path prefix in front of the filename, we
1630ba7866cdSAli Bahrami * want to put the temporary file in the same directory.
1631ba7866cdSAli Bahrami * Determine the length of the path.
16327c478bd9Sstevel@tonic-gate */
1633ba7866cdSAli Bahrami slash = strrchr(filename, '/');
1634ba7866cdSAli Bahrami if (slash != NULL)
1635ba7866cdSAli Bahrami prefix_cnt = slash - filename + 1;
1636ba7866cdSAli Bahrami tmpname = malloc(prefix_cnt + MSG_STR_MKTEMP_SIZE + 1);
1637ba7866cdSAli Bahrami if (tmpname == NULL) {
1638ba7866cdSAli Bahrami int err = errno;
1639ba7866cdSAli Bahrami (void) fprintf(stderr, MSG_INTL(MSG_MALLOC), strerror(err));
1640ba7866cdSAli Bahrami exit(1);
16417c478bd9Sstevel@tonic-gate }
16427c478bd9Sstevel@tonic-gate
1643ba7866cdSAli Bahrami if (prefix_cnt > 0)
1644ba7866cdSAli Bahrami (void) strncpy(tmpname, filename, prefix_cnt);
1645ba7866cdSAli Bahrami (void) strcpy(tmpname + prefix_cnt, MSG_ORIG(MSG_STR_MKTEMP));
1646ba7866cdSAli Bahrami (void) mktemp(tmpname);
1647ba7866cdSAli Bahrami
1648ba7866cdSAli Bahrami return (tmpname);
16497c478bd9Sstevel@tonic-gate }
1650