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 #include "lastcomm.h"
277c478bd9Sstevel@tonic-gate
287c478bd9Sstevel@tonic-gate /*
297c478bd9Sstevel@tonic-gate * lc_utils contains utility functions used by both the basic and extended
307c478bd9Sstevel@tonic-gate * accounting components of lastcomm. getdev(), on its first call, builds
317c478bd9Sstevel@tonic-gate * the set of tty device name to dev_t mappings.
327c478bd9Sstevel@tonic-gate */
337c478bd9Sstevel@tonic-gate
347c478bd9Sstevel@tonic-gate #define N_DEVS 43 /* hash value for device names */
357c478bd9Sstevel@tonic-gate #define NDEVS 500 /* max number of file names in /dev */
367c478bd9Sstevel@tonic-gate
377c478bd9Sstevel@tonic-gate #define HASH(d) (((int)d) % N_DEVS) /* hash function */
387c478bd9Sstevel@tonic-gate
397c478bd9Sstevel@tonic-gate struct devhash {
407c478bd9Sstevel@tonic-gate dev_t dev_dev;
417c478bd9Sstevel@tonic-gate char dev_name [PATHNAMLEN];
427c478bd9Sstevel@tonic-gate struct devhash *dev_nxt;
437c478bd9Sstevel@tonic-gate };
447c478bd9Sstevel@tonic-gate
457c478bd9Sstevel@tonic-gate static struct devhash *dev_hash[N_DEVS];
467c478bd9Sstevel@tonic-gate static struct devhash *dev_chain;
477c478bd9Sstevel@tonic-gate static int ndevs = NDEVS;
487c478bd9Sstevel@tonic-gate static struct devhash *hashtab;
497c478bd9Sstevel@tonic-gate
507c478bd9Sstevel@tonic-gate /*
517c478bd9Sstevel@tonic-gate * Default search list, used if /etc/ttysrch unavailable or unparsable.
527c478bd9Sstevel@tonic-gate */
537c478bd9Sstevel@tonic-gate static char *def_srch_dirs[] = {
547c478bd9Sstevel@tonic-gate "/dev/term",
557c478bd9Sstevel@tonic-gate "/dev/pts",
567c478bd9Sstevel@tonic-gate "/dev/xt",
577c478bd9Sstevel@tonic-gate NULL
587c478bd9Sstevel@tonic-gate };
597c478bd9Sstevel@tonic-gate static char *raw_sf; /* buffer containing raw image of the search file */
607c478bd9Sstevel@tonic-gate
617c478bd9Sstevel@tonic-gate #define SRCH_FILE_NAME "/etc/ttysrch"
627c478bd9Sstevel@tonic-gate /*
637c478bd9Sstevel@tonic-gate * /etc/ttysrch tokens.
647c478bd9Sstevel@tonic-gate */
657c478bd9Sstevel@tonic-gate #define COMMENT_CHAR '#'
667c478bd9Sstevel@tonic-gate #define EOLN '\n'
677c478bd9Sstevel@tonic-gate /*
687c478bd9Sstevel@tonic-gate * /etc/ttysrch parser states.
697c478bd9Sstevel@tonic-gate */
707c478bd9Sstevel@tonic-gate #define START_STATE 1
717c478bd9Sstevel@tonic-gate #define COMMENT_STATE 2
727c478bd9Sstevel@tonic-gate #define DIRNAME_STATE 3
737c478bd9Sstevel@tonic-gate
747c478bd9Sstevel@tonic-gate /*
757c478bd9Sstevel@tonic-gate * The following 2 routines are modified version of get_pri_dirs
767c478bd9Sstevel@tonic-gate * and srch_dir in ttyname.c.
777c478bd9Sstevel@tonic-gate */
787c478bd9Sstevel@tonic-gate static char **
get_pri_dirs()797c478bd9Sstevel@tonic-gate get_pri_dirs()
807c478bd9Sstevel@tonic-gate {
817c478bd9Sstevel@tonic-gate int bcount = 0;
827c478bd9Sstevel@tonic-gate int c;
837c478bd9Sstevel@tonic-gate int sf_lines = 0; /* number of lines in search file */
847c478bd9Sstevel@tonic-gate int dirno = 0;
857c478bd9Sstevel@tonic-gate int state;
867c478bd9Sstevel@tonic-gate FILE *sf;
877c478bd9Sstevel@tonic-gate char **pri_dirs; /* priority search list */
887c478bd9Sstevel@tonic-gate char *sfp; /* pointer inside the raw image buffer */
897c478bd9Sstevel@tonic-gate struct stat sfsb; /* search file's stat structure buffer */
907c478bd9Sstevel@tonic-gate
917c478bd9Sstevel@tonic-gate
927c478bd9Sstevel@tonic-gate if ((sf = fopen(SRCH_FILE_NAME, "r")) == NULL)
937c478bd9Sstevel@tonic-gate return (def_srch_dirs);
947c478bd9Sstevel@tonic-gate if (stat(SRCH_FILE_NAME, &sfsb) < 0) {
957c478bd9Sstevel@tonic-gate (void) fclose(sf);
967c478bd9Sstevel@tonic-gate return (def_srch_dirs);
977c478bd9Sstevel@tonic-gate }
987c478bd9Sstevel@tonic-gate raw_sf = malloc(sfsb.st_size + 1);
997c478bd9Sstevel@tonic-gate sfp = raw_sf;
1007c478bd9Sstevel@tonic-gate while ((bcount++ < sfsb.st_size) && ((c = getc(sf)) != EOF)) {
1017c478bd9Sstevel@tonic-gate *sfp++ = (char)c;
1027c478bd9Sstevel@tonic-gate if (c == EOLN)
1037c478bd9Sstevel@tonic-gate sf_lines++;
1047c478bd9Sstevel@tonic-gate }
1057c478bd9Sstevel@tonic-gate (void) fclose(sf);
1067c478bd9Sstevel@tonic-gate *sfp = EOLN;
1077c478bd9Sstevel@tonic-gate pri_dirs = malloc(++sf_lines * sizeof (char *));
1087c478bd9Sstevel@tonic-gate
1097c478bd9Sstevel@tonic-gate sfp = raw_sf;
1107c478bd9Sstevel@tonic-gate state = START_STATE;
1117c478bd9Sstevel@tonic-gate while (--bcount) {
1127c478bd9Sstevel@tonic-gate switch (state) {
1137c478bd9Sstevel@tonic-gate case START_STATE:
1147c478bd9Sstevel@tonic-gate if (*sfp == COMMENT_CHAR) {
1157c478bd9Sstevel@tonic-gate state = COMMENT_STATE;
1167c478bd9Sstevel@tonic-gate } else if (!isspace(*sfp)) {
1177c478bd9Sstevel@tonic-gate state = DIRNAME_STATE;
1187c478bd9Sstevel@tonic-gate pri_dirs[dirno++] = sfp;
1197c478bd9Sstevel@tonic-gate }
1207c478bd9Sstevel@tonic-gate break;
1217c478bd9Sstevel@tonic-gate case COMMENT_STATE:
1227c478bd9Sstevel@tonic-gate if (*sfp == EOLN)
1237c478bd9Sstevel@tonic-gate state = START_STATE;
1247c478bd9Sstevel@tonic-gate break;
1257c478bd9Sstevel@tonic-gate case DIRNAME_STATE:
1267c478bd9Sstevel@tonic-gate if (*sfp == EOLN) {
1277c478bd9Sstevel@tonic-gate *sfp = '\0';
1287c478bd9Sstevel@tonic-gate state = START_STATE;
1297c478bd9Sstevel@tonic-gate } else if (isspace(*sfp)) {
1307c478bd9Sstevel@tonic-gate *sfp = '\0';
1317c478bd9Sstevel@tonic-gate state = COMMENT_STATE;
1327c478bd9Sstevel@tonic-gate }
1337c478bd9Sstevel@tonic-gate break;
1347c478bd9Sstevel@tonic-gate
1357c478bd9Sstevel@tonic-gate } /* switch */
1367c478bd9Sstevel@tonic-gate sfp++;
1377c478bd9Sstevel@tonic-gate }
1387c478bd9Sstevel@tonic-gate
1397c478bd9Sstevel@tonic-gate *sfp = '\0';
1407c478bd9Sstevel@tonic-gate pri_dirs[dirno] = NULL;
1417c478bd9Sstevel@tonic-gate return (pri_dirs);
1427c478bd9Sstevel@tonic-gate }
1437c478bd9Sstevel@tonic-gate
1447c478bd9Sstevel@tonic-gate /*
1457c478bd9Sstevel@tonic-gate * Build a chain of character devices in dev_chain, starting with the given
1467c478bd9Sstevel@tonic-gate * path.
1477c478bd9Sstevel@tonic-gate */
1487c478bd9Sstevel@tonic-gate static int
srch_dir(char * path)1497c478bd9Sstevel@tonic-gate srch_dir(char *path)
1507c478bd9Sstevel@tonic-gate {
1517c478bd9Sstevel@tonic-gate DIR *dirp;
1527c478bd9Sstevel@tonic-gate struct dirent *direntp;
1537c478bd9Sstevel@tonic-gate struct stat st;
1547c478bd9Sstevel@tonic-gate char file_name[PATHNAMLEN];
1557c478bd9Sstevel@tonic-gate
1567c478bd9Sstevel@tonic-gate if ((dirp = opendir(path)) == NULL)
1577c478bd9Sstevel@tonic-gate return (0);
1587c478bd9Sstevel@tonic-gate
1597c478bd9Sstevel@tonic-gate if ((readdir(dirp) == NULL) || (readdir(dirp) == NULL))
1607c478bd9Sstevel@tonic-gate return (0);
1617c478bd9Sstevel@tonic-gate
1627c478bd9Sstevel@tonic-gate while ((direntp = readdir(dirp)) != NULL) {
1637c478bd9Sstevel@tonic-gate (void) strcpy(file_name, path);
1647c478bd9Sstevel@tonic-gate (void) strcat(file_name, "/");
1657c478bd9Sstevel@tonic-gate (void) strcat(file_name, direntp->d_name);
1667c478bd9Sstevel@tonic-gate if (stat((const char *)file_name, &st) < 0)
1677c478bd9Sstevel@tonic-gate continue;
1687c478bd9Sstevel@tonic-gate if ((st.st_mode & S_IFMT) == S_IFCHR) {
1697c478bd9Sstevel@tonic-gate (void) strcpy(hashtab->dev_name,
1707c478bd9Sstevel@tonic-gate file_name + strlen("/dev/"));
1717c478bd9Sstevel@tonic-gate hashtab->dev_nxt = dev_chain;
1727c478bd9Sstevel@tonic-gate dev_chain = hashtab;
1737c478bd9Sstevel@tonic-gate hashtab++;
1747c478bd9Sstevel@tonic-gate if (--ndevs < 0)
1757c478bd9Sstevel@tonic-gate return (-1);
1767c478bd9Sstevel@tonic-gate }
1777c478bd9Sstevel@tonic-gate }
1787c478bd9Sstevel@tonic-gate (void) closedir(dirp);
1797c478bd9Sstevel@tonic-gate return (1);
1807c478bd9Sstevel@tonic-gate }
1817c478bd9Sstevel@tonic-gate
1827c478bd9Sstevel@tonic-gate
1837c478bd9Sstevel@tonic-gate static void
setupdevs()1847c478bd9Sstevel@tonic-gate setupdevs()
1857c478bd9Sstevel@tonic-gate {
1867c478bd9Sstevel@tonic-gate int dirno = 0;
1877c478bd9Sstevel@tonic-gate char **srch_dirs;
1887c478bd9Sstevel@tonic-gate
1897c478bd9Sstevel@tonic-gate hashtab = malloc(NDEVS * sizeof (struct devhash));
1907c478bd9Sstevel@tonic-gate if (hashtab == NULL) {
1917c478bd9Sstevel@tonic-gate (void) fprintf(stderr, gettext("No memory for device table\n"));
1927c478bd9Sstevel@tonic-gate return;
1937c478bd9Sstevel@tonic-gate }
1947c478bd9Sstevel@tonic-gate
1957c478bd9Sstevel@tonic-gate srch_dirs = get_pri_dirs();
1967c478bd9Sstevel@tonic-gate
1977c478bd9Sstevel@tonic-gate while (srch_dirs[dirno] != NULL) {
1987c478bd9Sstevel@tonic-gate if (srch_dir(srch_dirs[dirno]) < 0)
1997c478bd9Sstevel@tonic-gate return;
2007c478bd9Sstevel@tonic-gate dirno++;
2017c478bd9Sstevel@tonic-gate }
2027c478bd9Sstevel@tonic-gate
2037c478bd9Sstevel@tonic-gate dirno = 0;
2047c478bd9Sstevel@tonic-gate while (srch_dirs[dirno] != NULL) {
2057c478bd9Sstevel@tonic-gate if (strcmp("/dev", srch_dirs[dirno]) == 0)
2067c478bd9Sstevel@tonic-gate /*
2077c478bd9Sstevel@tonic-gate * Don't search /dev twice.
2087c478bd9Sstevel@tonic-gate */
2097c478bd9Sstevel@tonic-gate return;
2107c478bd9Sstevel@tonic-gate dirno++;
2117c478bd9Sstevel@tonic-gate }
2127c478bd9Sstevel@tonic-gate }
2137c478bd9Sstevel@tonic-gate
2147c478bd9Sstevel@tonic-gate char *
getdev(dev_t dev)2157c478bd9Sstevel@tonic-gate getdev(dev_t dev)
2167c478bd9Sstevel@tonic-gate {
2177c478bd9Sstevel@tonic-gate struct devhash *hp, *nhp;
2187c478bd9Sstevel@tonic-gate struct stat statb;
2197c478bd9Sstevel@tonic-gate char name[PATHNAMLEN];
2207c478bd9Sstevel@tonic-gate static dev_t lastdev = (dev_t)-1;
2217c478bd9Sstevel@tonic-gate static char *lastname;
2227c478bd9Sstevel@tonic-gate static int init = 0;
2237c478bd9Sstevel@tonic-gate
2247c478bd9Sstevel@tonic-gate if (dev == NODEV)
2257c478bd9Sstevel@tonic-gate return ("__");
2267c478bd9Sstevel@tonic-gate if (dev == lastdev)
2277c478bd9Sstevel@tonic-gate return (lastname);
2287c478bd9Sstevel@tonic-gate if (!init) {
2297c478bd9Sstevel@tonic-gate setupdevs();
2307c478bd9Sstevel@tonic-gate init++;
2317c478bd9Sstevel@tonic-gate }
2327c478bd9Sstevel@tonic-gate
2337c478bd9Sstevel@tonic-gate for (hp = dev_hash[HASH(dev)]; hp; hp = hp->dev_nxt)
2347c478bd9Sstevel@tonic-gate if (hp->dev_dev == dev) {
2357c478bd9Sstevel@tonic-gate lastdev = dev;
2367c478bd9Sstevel@tonic-gate return (lastname = hp->dev_name);
2377c478bd9Sstevel@tonic-gate }
2387c478bd9Sstevel@tonic-gate
2397c478bd9Sstevel@tonic-gate for (hp = dev_chain; hp; hp = nhp) {
2407c478bd9Sstevel@tonic-gate nhp = hp->dev_nxt;
2417c478bd9Sstevel@tonic-gate (void) strcpy(name, "/dev/");
2427c478bd9Sstevel@tonic-gate (void) strcat(name, hp->dev_name);
2437c478bd9Sstevel@tonic-gate if (stat(name, &statb) < 0) /* name truncated usually */
2447c478bd9Sstevel@tonic-gate continue;
2457c478bd9Sstevel@tonic-gate if ((statb.st_mode & S_IFMT) != S_IFCHR)
2467c478bd9Sstevel@tonic-gate continue;
2477c478bd9Sstevel@tonic-gate hp->dev_dev = statb.st_rdev;
2487c478bd9Sstevel@tonic-gate hp->dev_nxt = dev_hash[HASH(hp->dev_dev)];
2497c478bd9Sstevel@tonic-gate dev_hash[HASH(hp->dev_dev)] = hp;
2507c478bd9Sstevel@tonic-gate if (hp->dev_dev == dev) {
2517c478bd9Sstevel@tonic-gate dev_chain = nhp;
2527c478bd9Sstevel@tonic-gate lastdev = dev;
2537c478bd9Sstevel@tonic-gate return (lastname = hp->dev_name);
2547c478bd9Sstevel@tonic-gate }
2557c478bd9Sstevel@tonic-gate }
2567c478bd9Sstevel@tonic-gate dev_chain = NULL;
2577c478bd9Sstevel@tonic-gate return ("??");
2587c478bd9Sstevel@tonic-gate }
2597c478bd9Sstevel@tonic-gate
2607c478bd9Sstevel@tonic-gate char *
flagbits(int f)2617c478bd9Sstevel@tonic-gate flagbits(int f)
2627c478bd9Sstevel@tonic-gate {
2637c478bd9Sstevel@tonic-gate int i = 0;
2647c478bd9Sstevel@tonic-gate static char flags[20];
2657c478bd9Sstevel@tonic-gate
2667c478bd9Sstevel@tonic-gate #define BIT(flag, ch) flags[i++] = (f & flag) ? ch : ' '
2677c478bd9Sstevel@tonic-gate BIT(ASU, 'S');
2687c478bd9Sstevel@tonic-gate BIT(AFORK, 'F');
2697c478bd9Sstevel@tonic-gate flags[i] = '\0';
2707c478bd9Sstevel@tonic-gate return (flags);
2717c478bd9Sstevel@tonic-gate #undef BIT
2727c478bd9Sstevel@tonic-gate }
2737c478bd9Sstevel@tonic-gate
2747c478bd9Sstevel@tonic-gate char *
getname(uid_t uid)2757c478bd9Sstevel@tonic-gate getname(uid_t uid)
2767c478bd9Sstevel@tonic-gate {
2777c478bd9Sstevel@tonic-gate struct passwd *pw;
2787c478bd9Sstevel@tonic-gate static char uidname[NMAX];
2797c478bd9Sstevel@tonic-gate
2807c478bd9Sstevel@tonic-gate if ((pw = getpwuid(uid)) == NULL) {
281*f48205beScasper (void) sprintf(uidname, "%u", uid);
2827c478bd9Sstevel@tonic-gate return (uidname);
2837c478bd9Sstevel@tonic-gate }
2847c478bd9Sstevel@tonic-gate return (pw->pw_name);
2857c478bd9Sstevel@tonic-gate }
286