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 5*f48205beScasper * Common Development and Distribution License (the "License"). 6*f48205beScasper * 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 */ 217c478bd9Sstevel@tonic-gate /* 22*f48205beScasper * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 23*f48205beScasper * Use is subject to license terms. 247c478bd9Sstevel@tonic-gate */ 257c478bd9Sstevel@tonic-gate 267c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 277c478bd9Sstevel@tonic-gate 287c478bd9Sstevel@tonic-gate #include "lastcomm.h" 297c478bd9Sstevel@tonic-gate 307c478bd9Sstevel@tonic-gate /* 317c478bd9Sstevel@tonic-gate * lc_utils contains utility functions used by both the basic and extended 327c478bd9Sstevel@tonic-gate * accounting components of lastcomm. getdev(), on its first call, builds 337c478bd9Sstevel@tonic-gate * the set of tty device name to dev_t mappings. 347c478bd9Sstevel@tonic-gate */ 357c478bd9Sstevel@tonic-gate 367c478bd9Sstevel@tonic-gate #define N_DEVS 43 /* hash value for device names */ 377c478bd9Sstevel@tonic-gate #define NDEVS 500 /* max number of file names in /dev */ 387c478bd9Sstevel@tonic-gate 397c478bd9Sstevel@tonic-gate #define HASH(d) (((int)d) % N_DEVS) /* hash function */ 407c478bd9Sstevel@tonic-gate 417c478bd9Sstevel@tonic-gate struct devhash { 427c478bd9Sstevel@tonic-gate dev_t dev_dev; 437c478bd9Sstevel@tonic-gate char dev_name [PATHNAMLEN]; 447c478bd9Sstevel@tonic-gate struct devhash *dev_nxt; 457c478bd9Sstevel@tonic-gate }; 467c478bd9Sstevel@tonic-gate 477c478bd9Sstevel@tonic-gate static struct devhash *dev_hash[N_DEVS]; 487c478bd9Sstevel@tonic-gate static struct devhash *dev_chain; 497c478bd9Sstevel@tonic-gate static int ndevs = NDEVS; 507c478bd9Sstevel@tonic-gate static struct devhash *hashtab; 517c478bd9Sstevel@tonic-gate 527c478bd9Sstevel@tonic-gate /* 537c478bd9Sstevel@tonic-gate * Default search list, used if /etc/ttysrch unavailable or unparsable. 547c478bd9Sstevel@tonic-gate */ 557c478bd9Sstevel@tonic-gate static char *def_srch_dirs[] = { 567c478bd9Sstevel@tonic-gate "/dev/term", 577c478bd9Sstevel@tonic-gate "/dev/pts", 587c478bd9Sstevel@tonic-gate "/dev/xt", 597c478bd9Sstevel@tonic-gate NULL 607c478bd9Sstevel@tonic-gate }; 617c478bd9Sstevel@tonic-gate static char *raw_sf; /* buffer containing raw image of the search file */ 627c478bd9Sstevel@tonic-gate 637c478bd9Sstevel@tonic-gate #define SRCH_FILE_NAME "/etc/ttysrch" 647c478bd9Sstevel@tonic-gate /* 657c478bd9Sstevel@tonic-gate * /etc/ttysrch tokens. 667c478bd9Sstevel@tonic-gate */ 677c478bd9Sstevel@tonic-gate #define COMMENT_CHAR '#' 687c478bd9Sstevel@tonic-gate #define EOLN '\n' 697c478bd9Sstevel@tonic-gate /* 707c478bd9Sstevel@tonic-gate * /etc/ttysrch parser states. 717c478bd9Sstevel@tonic-gate */ 727c478bd9Sstevel@tonic-gate #define START_STATE 1 737c478bd9Sstevel@tonic-gate #define COMMENT_STATE 2 747c478bd9Sstevel@tonic-gate #define DIRNAME_STATE 3 757c478bd9Sstevel@tonic-gate 767c478bd9Sstevel@tonic-gate /* 777c478bd9Sstevel@tonic-gate * The following 2 routines are modified version of get_pri_dirs 787c478bd9Sstevel@tonic-gate * and srch_dir in ttyname.c. 797c478bd9Sstevel@tonic-gate */ 807c478bd9Sstevel@tonic-gate static char ** 817c478bd9Sstevel@tonic-gate get_pri_dirs() 827c478bd9Sstevel@tonic-gate { 837c478bd9Sstevel@tonic-gate int bcount = 0; 847c478bd9Sstevel@tonic-gate int c; 857c478bd9Sstevel@tonic-gate int sf_lines = 0; /* number of lines in search file */ 867c478bd9Sstevel@tonic-gate int dirno = 0; 877c478bd9Sstevel@tonic-gate int state; 887c478bd9Sstevel@tonic-gate FILE *sf; 897c478bd9Sstevel@tonic-gate char **pri_dirs; /* priority search list */ 907c478bd9Sstevel@tonic-gate char *sfp; /* pointer inside the raw image buffer */ 917c478bd9Sstevel@tonic-gate struct stat sfsb; /* search file's stat structure buffer */ 927c478bd9Sstevel@tonic-gate 937c478bd9Sstevel@tonic-gate 947c478bd9Sstevel@tonic-gate if ((sf = fopen(SRCH_FILE_NAME, "r")) == NULL) 957c478bd9Sstevel@tonic-gate return (def_srch_dirs); 967c478bd9Sstevel@tonic-gate if (stat(SRCH_FILE_NAME, &sfsb) < 0) { 977c478bd9Sstevel@tonic-gate (void) fclose(sf); 987c478bd9Sstevel@tonic-gate return (def_srch_dirs); 997c478bd9Sstevel@tonic-gate } 1007c478bd9Sstevel@tonic-gate raw_sf = malloc(sfsb.st_size + 1); 1017c478bd9Sstevel@tonic-gate sfp = raw_sf; 1027c478bd9Sstevel@tonic-gate while ((bcount++ < sfsb.st_size) && ((c = getc(sf)) != EOF)) { 1037c478bd9Sstevel@tonic-gate *sfp++ = (char)c; 1047c478bd9Sstevel@tonic-gate if (c == EOLN) 1057c478bd9Sstevel@tonic-gate sf_lines++; 1067c478bd9Sstevel@tonic-gate } 1077c478bd9Sstevel@tonic-gate (void) fclose(sf); 1087c478bd9Sstevel@tonic-gate *sfp = EOLN; 1097c478bd9Sstevel@tonic-gate pri_dirs = malloc(++sf_lines * sizeof (char *)); 1107c478bd9Sstevel@tonic-gate 1117c478bd9Sstevel@tonic-gate sfp = raw_sf; 1127c478bd9Sstevel@tonic-gate state = START_STATE; 1137c478bd9Sstevel@tonic-gate while (--bcount) { 1147c478bd9Sstevel@tonic-gate switch (state) { 1157c478bd9Sstevel@tonic-gate case START_STATE: 1167c478bd9Sstevel@tonic-gate if (*sfp == COMMENT_CHAR) { 1177c478bd9Sstevel@tonic-gate state = COMMENT_STATE; 1187c478bd9Sstevel@tonic-gate } else if (!isspace(*sfp)) { 1197c478bd9Sstevel@tonic-gate state = DIRNAME_STATE; 1207c478bd9Sstevel@tonic-gate pri_dirs[dirno++] = sfp; 1217c478bd9Sstevel@tonic-gate } 1227c478bd9Sstevel@tonic-gate break; 1237c478bd9Sstevel@tonic-gate case COMMENT_STATE: 1247c478bd9Sstevel@tonic-gate if (*sfp == EOLN) 1257c478bd9Sstevel@tonic-gate state = START_STATE; 1267c478bd9Sstevel@tonic-gate break; 1277c478bd9Sstevel@tonic-gate case DIRNAME_STATE: 1287c478bd9Sstevel@tonic-gate if (*sfp == EOLN) { 1297c478bd9Sstevel@tonic-gate *sfp = '\0'; 1307c478bd9Sstevel@tonic-gate state = START_STATE; 1317c478bd9Sstevel@tonic-gate } else if (isspace(*sfp)) { 1327c478bd9Sstevel@tonic-gate *sfp = '\0'; 1337c478bd9Sstevel@tonic-gate state = COMMENT_STATE; 1347c478bd9Sstevel@tonic-gate } 1357c478bd9Sstevel@tonic-gate break; 1367c478bd9Sstevel@tonic-gate 1377c478bd9Sstevel@tonic-gate } /* switch */ 1387c478bd9Sstevel@tonic-gate sfp++; 1397c478bd9Sstevel@tonic-gate } 1407c478bd9Sstevel@tonic-gate 1417c478bd9Sstevel@tonic-gate *sfp = '\0'; 1427c478bd9Sstevel@tonic-gate pri_dirs[dirno] = NULL; 1437c478bd9Sstevel@tonic-gate return (pri_dirs); 1447c478bd9Sstevel@tonic-gate } 1457c478bd9Sstevel@tonic-gate 1467c478bd9Sstevel@tonic-gate /* 1477c478bd9Sstevel@tonic-gate * Build a chain of character devices in dev_chain, starting with the given 1487c478bd9Sstevel@tonic-gate * path. 1497c478bd9Sstevel@tonic-gate */ 1507c478bd9Sstevel@tonic-gate static int 1517c478bd9Sstevel@tonic-gate srch_dir(char *path) 1527c478bd9Sstevel@tonic-gate { 1537c478bd9Sstevel@tonic-gate DIR *dirp; 1547c478bd9Sstevel@tonic-gate struct dirent *direntp; 1557c478bd9Sstevel@tonic-gate struct stat st; 1567c478bd9Sstevel@tonic-gate char file_name[PATHNAMLEN]; 1577c478bd9Sstevel@tonic-gate 1587c478bd9Sstevel@tonic-gate if ((dirp = opendir(path)) == NULL) 1597c478bd9Sstevel@tonic-gate return (0); 1607c478bd9Sstevel@tonic-gate 1617c478bd9Sstevel@tonic-gate if ((readdir(dirp) == NULL) || (readdir(dirp) == NULL)) 1627c478bd9Sstevel@tonic-gate return (0); 1637c478bd9Sstevel@tonic-gate 1647c478bd9Sstevel@tonic-gate while ((direntp = readdir(dirp)) != NULL) { 1657c478bd9Sstevel@tonic-gate (void) strcpy(file_name, path); 1667c478bd9Sstevel@tonic-gate (void) strcat(file_name, "/"); 1677c478bd9Sstevel@tonic-gate (void) strcat(file_name, direntp->d_name); 1687c478bd9Sstevel@tonic-gate if (stat((const char *)file_name, &st) < 0) 1697c478bd9Sstevel@tonic-gate continue; 1707c478bd9Sstevel@tonic-gate if ((st.st_mode & S_IFMT) == S_IFCHR) { 1717c478bd9Sstevel@tonic-gate (void) strcpy(hashtab->dev_name, 1727c478bd9Sstevel@tonic-gate file_name + strlen("/dev/")); 1737c478bd9Sstevel@tonic-gate hashtab->dev_nxt = dev_chain; 1747c478bd9Sstevel@tonic-gate dev_chain = hashtab; 1757c478bd9Sstevel@tonic-gate hashtab++; 1767c478bd9Sstevel@tonic-gate if (--ndevs < 0) 1777c478bd9Sstevel@tonic-gate return (-1); 1787c478bd9Sstevel@tonic-gate } 1797c478bd9Sstevel@tonic-gate } 1807c478bd9Sstevel@tonic-gate (void) closedir(dirp); 1817c478bd9Sstevel@tonic-gate return (1); 1827c478bd9Sstevel@tonic-gate } 1837c478bd9Sstevel@tonic-gate 1847c478bd9Sstevel@tonic-gate 1857c478bd9Sstevel@tonic-gate static void 1867c478bd9Sstevel@tonic-gate setupdevs() 1877c478bd9Sstevel@tonic-gate { 1887c478bd9Sstevel@tonic-gate int dirno = 0; 1897c478bd9Sstevel@tonic-gate char **srch_dirs; 1907c478bd9Sstevel@tonic-gate 1917c478bd9Sstevel@tonic-gate hashtab = malloc(NDEVS * sizeof (struct devhash)); 1927c478bd9Sstevel@tonic-gate if (hashtab == NULL) { 1937c478bd9Sstevel@tonic-gate (void) fprintf(stderr, gettext("No memory for device table\n")); 1947c478bd9Sstevel@tonic-gate return; 1957c478bd9Sstevel@tonic-gate } 1967c478bd9Sstevel@tonic-gate 1977c478bd9Sstevel@tonic-gate srch_dirs = get_pri_dirs(); 1987c478bd9Sstevel@tonic-gate 1997c478bd9Sstevel@tonic-gate while (srch_dirs[dirno] != NULL) { 2007c478bd9Sstevel@tonic-gate if (srch_dir(srch_dirs[dirno]) < 0) 2017c478bd9Sstevel@tonic-gate return; 2027c478bd9Sstevel@tonic-gate dirno++; 2037c478bd9Sstevel@tonic-gate } 2047c478bd9Sstevel@tonic-gate 2057c478bd9Sstevel@tonic-gate dirno = 0; 2067c478bd9Sstevel@tonic-gate while (srch_dirs[dirno] != NULL) { 2077c478bd9Sstevel@tonic-gate if (strcmp("/dev", srch_dirs[dirno]) == 0) 2087c478bd9Sstevel@tonic-gate /* 2097c478bd9Sstevel@tonic-gate * Don't search /dev twice. 2107c478bd9Sstevel@tonic-gate */ 2117c478bd9Sstevel@tonic-gate return; 2127c478bd9Sstevel@tonic-gate dirno++; 2137c478bd9Sstevel@tonic-gate } 2147c478bd9Sstevel@tonic-gate } 2157c478bd9Sstevel@tonic-gate 2167c478bd9Sstevel@tonic-gate char * 2177c478bd9Sstevel@tonic-gate getdev(dev_t dev) 2187c478bd9Sstevel@tonic-gate { 2197c478bd9Sstevel@tonic-gate struct devhash *hp, *nhp; 2207c478bd9Sstevel@tonic-gate struct stat statb; 2217c478bd9Sstevel@tonic-gate char name[PATHNAMLEN]; 2227c478bd9Sstevel@tonic-gate static dev_t lastdev = (dev_t)-1; 2237c478bd9Sstevel@tonic-gate static char *lastname; 2247c478bd9Sstevel@tonic-gate static int init = 0; 2257c478bd9Sstevel@tonic-gate 2267c478bd9Sstevel@tonic-gate if (dev == NODEV) 2277c478bd9Sstevel@tonic-gate return ("__"); 2287c478bd9Sstevel@tonic-gate if (dev == lastdev) 2297c478bd9Sstevel@tonic-gate return (lastname); 2307c478bd9Sstevel@tonic-gate if (!init) { 2317c478bd9Sstevel@tonic-gate setupdevs(); 2327c478bd9Sstevel@tonic-gate init++; 2337c478bd9Sstevel@tonic-gate } 2347c478bd9Sstevel@tonic-gate 2357c478bd9Sstevel@tonic-gate for (hp = dev_hash[HASH(dev)]; hp; hp = hp->dev_nxt) 2367c478bd9Sstevel@tonic-gate if (hp->dev_dev == dev) { 2377c478bd9Sstevel@tonic-gate lastdev = dev; 2387c478bd9Sstevel@tonic-gate return (lastname = hp->dev_name); 2397c478bd9Sstevel@tonic-gate } 2407c478bd9Sstevel@tonic-gate 2417c478bd9Sstevel@tonic-gate for (hp = dev_chain; hp; hp = nhp) { 2427c478bd9Sstevel@tonic-gate nhp = hp->dev_nxt; 2437c478bd9Sstevel@tonic-gate (void) strcpy(name, "/dev/"); 2447c478bd9Sstevel@tonic-gate (void) strcat(name, hp->dev_name); 2457c478bd9Sstevel@tonic-gate if (stat(name, &statb) < 0) /* name truncated usually */ 2467c478bd9Sstevel@tonic-gate continue; 2477c478bd9Sstevel@tonic-gate if ((statb.st_mode & S_IFMT) != S_IFCHR) 2487c478bd9Sstevel@tonic-gate continue; 2497c478bd9Sstevel@tonic-gate hp->dev_dev = statb.st_rdev; 2507c478bd9Sstevel@tonic-gate hp->dev_nxt = dev_hash[HASH(hp->dev_dev)]; 2517c478bd9Sstevel@tonic-gate dev_hash[HASH(hp->dev_dev)] = hp; 2527c478bd9Sstevel@tonic-gate if (hp->dev_dev == dev) { 2537c478bd9Sstevel@tonic-gate dev_chain = nhp; 2547c478bd9Sstevel@tonic-gate lastdev = dev; 2557c478bd9Sstevel@tonic-gate return (lastname = hp->dev_name); 2567c478bd9Sstevel@tonic-gate } 2577c478bd9Sstevel@tonic-gate } 2587c478bd9Sstevel@tonic-gate dev_chain = NULL; 2597c478bd9Sstevel@tonic-gate return ("??"); 2607c478bd9Sstevel@tonic-gate } 2617c478bd9Sstevel@tonic-gate 2627c478bd9Sstevel@tonic-gate char * 2637c478bd9Sstevel@tonic-gate flagbits(int f) 2647c478bd9Sstevel@tonic-gate { 2657c478bd9Sstevel@tonic-gate int i = 0; 2667c478bd9Sstevel@tonic-gate static char flags[20]; 2677c478bd9Sstevel@tonic-gate 2687c478bd9Sstevel@tonic-gate #define BIT(flag, ch) flags[i++] = (f & flag) ? ch : ' ' 2697c478bd9Sstevel@tonic-gate BIT(ASU, 'S'); 2707c478bd9Sstevel@tonic-gate BIT(AFORK, 'F'); 2717c478bd9Sstevel@tonic-gate flags[i] = '\0'; 2727c478bd9Sstevel@tonic-gate return (flags); 2737c478bd9Sstevel@tonic-gate #undef BIT 2747c478bd9Sstevel@tonic-gate } 2757c478bd9Sstevel@tonic-gate 2767c478bd9Sstevel@tonic-gate char * 2777c478bd9Sstevel@tonic-gate getname(uid_t uid) 2787c478bd9Sstevel@tonic-gate { 2797c478bd9Sstevel@tonic-gate struct passwd *pw; 2807c478bd9Sstevel@tonic-gate static char uidname[NMAX]; 2817c478bd9Sstevel@tonic-gate 2827c478bd9Sstevel@tonic-gate if ((pw = getpwuid(uid)) == NULL) { 283*f48205beScasper (void) sprintf(uidname, "%u", uid); 2847c478bd9Sstevel@tonic-gate return (uidname); 2857c478bd9Sstevel@tonic-gate } 2867c478bd9Sstevel@tonic-gate return (pw->pw_name); 2877c478bd9Sstevel@tonic-gate } 288