1 /* $NetBSD: who.c,v 1.22 2008/07/21 14:19:28 lukem Exp $ */
4 * Copyright (c) 1989, 1993
5 * The Regents of the University of California. All rights reserved.
7 * This code is derived from software contributed to Berkeley by
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 #include <sys/cdefs.h>
36 #include <sys/sysctl.h>
37 #include <sys/types.h>
50 #include "utmpentry.h"
52 static void print_boottime(void);
53 static void output_labels(void);
54 static void who_am_i(const char *, int);
55 static void usage(void);
56 static void process(const char *, int);
57 static void eprint(const struct utmpentry *);
58 static void print(const char *, const char *, time_t, const char *, pid_t pid,
59 uint16_t term, uint16_t xit, uint16_t sess, uint16_t type);
60 static void quick(const char *);
62 static int show_term; /* show term state */
63 static int show_idle; /* show idle time */
64 static int show_details; /* show exit status etc. */
65 static int bflag; /* Show date and time of last reboot */
67 struct ut_type_names {
72 { RUN_LVL, "run level" },
73 { BOOT_TIME, "boot time" },
74 { OLD_TIME, "old time" },
75 { NEW_TIME, "new time" },
76 { INIT_PROCESS, "init process" },
77 { LOGIN_PROCESS, "login process" },
78 { USER_PROCESS, "user process" },
79 { DEAD_PROCESS, "dead process" },
80 { ACCOUNTING, "accounting" },
81 { SIGNATURE, "signature" },
82 { DOWN_TIME, "down time" },
87 main(int argc, char *argv[])
89 int c, only_current_term, show_labels, quick_mode, default_mode;
92 setlocale(LC_ALL, "");
94 only_current_term = show_term = show_idle = show_labels = 0;
95 quick_mode = default_mode = 0;
97 while ((c = getopt(argc, argv, "abdHlmpqrsTtuv")) != -1) {
101 show_idle = show_details = 1;
105 et |= (1 << BOOT_TIME);
110 et |= (1 << DEAD_PROCESS);
116 et |= (1 << LOGIN_PROCESS);
119 only_current_term = 1;
122 et |= (1 << INIT_PROCESS);
128 et |= (1 << RUN_LVL);
137 et |= (1 << NEW_TIME);
157 err(EXIT_FAILURE, "cannot change directory to /dev");
162 only_current_term = show_term = show_idle = 0;
164 if (!quick_mode && bflag)
171 } else if (only_current_term) {
172 who_am_i(NULL, show_labels);
174 process(NULL, show_labels);
177 case 1: /* who utmp_file */
180 } else if (only_current_term) {
181 who_am_i(*argv, show_labels);
183 process(*argv, show_labels);
186 case 2: /* who am i */
187 who_am_i(NULL, show_labels);
200 struct timeval boottime;
203 size = sizeof(boottime);
204 if (sysctlbyname("kern.boottime", &boottime, &size, NULL, 0) != -1 &&
205 boottime.tv_sec != 0) {
206 printf("%s", ctime(&boottime.tv_sec));
212 strrstr(const char *str, const char *pat)
217 return __DECONST(char *, str);
221 for (estr = str + strlen(str); str < estr; estr--)
222 if (strncmp(estr, pat, len) == 0)
223 return __DECONST(char *, estr);
228 who_am_i(const char *fname, int show_labels)
234 struct utmpentry *ehead, *ep;
236 /* search through the utmpx and find an entry for this tty */
237 if ((p = ttyname(STDIN_FILENO)) != NULL) {
239 /* strip directory prefixes for ttys */
240 if ((t = strrstr(p, "/pts/")) != NULL ||
241 (t = strrchr(p, '/')) != NULL)
244 (void)getutentries(fname, &ehead);
245 for (ep = ehead; ep; ep = ep->next)
246 if (strcmp(ep->line, p) == 0) {
256 pw = getpwuid(getuid());
259 print(pw ? pw->pw_name : "?", p, now, "", getpid(), 0, 0, 0, 0);
263 process(const char *fname, int show_labels)
265 struct utmpentry *ehead, *ep;
266 (void)getutentries(fname, &ehead);
269 for (ep = ehead; ep != NULL; ep = ep->next)
274 eprint(const struct utmpentry *ep)
276 print(ep->name, ep->line, (time_t)ep->tv.tv_sec, ep->host, ep->pid,
277 ep->term, ep->exit, ep->sess, ep->type);
281 print(const char *name, const char *line, time_t t, const char *host,
282 pid_t pid, uint16_t term, uint16_t xit, uint16_t sess, uint16_t type)
286 static time_t now = 0;
288 const char *types = NULL;
294 for (i = 0; ut_type_names[i].type >= 0; i++) {
295 types = ut_type_names[i].name;
296 if (ut_type_names[i].type == type)
300 if (show_term || show_idle) {
304 if (stat(line, &sb) == 0) {
305 state = (sb.st_mode & 020) ? '+' : '-';
306 idle = now - sb.st_atime;
311 (void)printf("%-*.*s ", maxname, maxname, name);
314 (void)printf("%c ", state);
316 (void)printf("%-*.*s ", maxline, maxline, line);
317 (void)printf("%.12s ", ctime(&t) + 4);
322 else if (idle < (24 * 60 * 60))
323 (void)printf("%02ld:%02ld ",
324 (long)(idle / (60 * 60)),
325 (long)(idle % (60 * 60)) / 60);
327 (void)printf(" old ");
329 (void)printf("\t%6d", pid);
333 (void)printf("\tnew=%c old=%c", term, xit);
335 (void)printf("\tterm=%d exit=%d", term, xit);
336 (void)printf(" sess=%d", sess);
337 (void)printf(" type=%s ", types);
342 (void)printf("\t(%.*s)", maxhost, host);
349 (void)printf("%-*.*s ", maxname, maxname, "USER");
354 (void)printf("%-*.*s ", maxline, maxline, "LINE");
355 (void)printf("WHEN ");
358 (void)printf("IDLE ");
359 (void)printf("\t PID");
361 (void)printf("\tCOMMENT");
368 quick(const char *fname)
370 struct utmpentry *ehead, *ep;
373 (void)getutentries(fname, &ehead);
374 for (ep = ehead; ep != NULL; ep = ep->next) {
375 (void)printf("%-*s ", maxname, ep->name);
376 if ((++num % 8) == 0)
382 (void)printf("# users = %d\n", num);
388 (void)fprintf(stderr, "Usage: %s [-abdHlmqrsTtuv] [file]\n\t%s am i\n",
389 getprogname(), getprogname());