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
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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
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35 #include <sys/cdefs.h>
36 #include <sys/sysctl.h>
37 #include <sys/types.h>
55 #include "utmpentry.h"
57 static void print_boottime(void);
58 static void output_labels(void);
59 static void who_am_i(const char *, int);
60 static void usage(void);
61 static void process(const char *, int);
62 static void eprint(const struct utmpentry *);
63 static void print(const char *, const char *, time_t, const char *, pid_t pid,
64 uint16_t term, uint16_t xit, uint16_t sess, uint16_t type);
65 static void quick(const char *);
67 static int show_term; /* show term state */
68 static int show_idle; /* show idle time */
69 static int show_details; /* show exit status etc. */
70 static int bflag; /* Show date and time of last reboot */
72 struct ut_type_names {
78 { RUN_LVL, "run level" },
79 { BOOT_TIME, "boot time" },
80 { OLD_TIME, "old time" },
81 { NEW_TIME, "new time" },
82 { INIT_PROCESS, "init process" },
83 { LOGIN_PROCESS, "login process" },
84 { USER_PROCESS, "user process" },
85 { DEAD_PROCESS, "dead process" },
86 { ACCOUNTING, "accounting" },
87 { SIGNATURE, "signature" },
88 { DOWN_TIME, "down time" },
89 #endif /* SUPPORT_UTMPX */
94 main(int argc, char *argv[])
96 int c, only_current_term, show_labels, quick_mode, default_mode;
99 setlocale(LC_ALL, "");
101 only_current_term = show_term = show_idle = show_labels = 0;
102 quick_mode = default_mode = 0;
104 while ((c = getopt(argc, argv, "abdHlmpqrsTtuv")) != -1) {
108 show_idle = show_details = 1;
112 et |= (1 << BOOT_TIME);
117 et |= (1 << DEAD_PROCESS);
123 et |= (1 << LOGIN_PROCESS);
126 only_current_term = 1;
129 et |= (1 << INIT_PROCESS);
135 et |= (1 << RUN_LVL);
144 et |= (1 << NEW_TIME);
164 err(EXIT_FAILURE, "cannot change directory to /dev");
169 only_current_term = show_term = show_idle = 0;
171 if (!quick_mode && bflag)
178 } else if (only_current_term) {
179 who_am_i(NULL, show_labels);
181 process(NULL, show_labels);
184 case 1: /* who utmp_file */
187 } else if (only_current_term) {
188 who_am_i(*argv, show_labels);
190 process(*argv, show_labels);
193 case 2: /* who am i */
194 who_am_i(NULL, show_labels);
207 struct timeval boottime;
210 size = sizeof(boottime);
211 if (sysctlbyname("kern.boottime", &boottime, &size, NULL, 0) != -1 &&
212 boottime.tv_sec != 0) {
213 printf("%s", ctime(&boottime.tv_sec));
219 strrstr(const char *str, const char *pat)
224 return __DECONST(char *, str);
228 for (estr = str + strlen(str); str < estr; estr--)
229 if (strncmp(estr, pat, len) == 0)
230 return __DECONST(char *, estr);
235 who_am_i(const char *fname, int show_labels)
241 struct utmpentry *ehead, *ep;
243 /* search through the utmp and find an entry for this tty */
244 if ((p = ttyname(STDIN_FILENO)) != NULL) {
246 /* strip directory prefixes for ttys */
247 if ((t = strrstr(p, "/pts/")) != NULL ||
248 (t = strrchr(p, '/')) != NULL)
251 (void)getutentries(fname, &ehead);
252 for (ep = ehead; ep; ep = ep->next)
253 if (strcmp(ep->line, p) == 0) {
263 pw = getpwuid(getuid());
266 print(pw ? pw->pw_name : "?", p, now, "", getpid(), 0, 0, 0, 0);
270 process(const char *fname, int show_labels)
272 struct utmpentry *ehead, *ep;
273 (void)getutentries(fname, &ehead);
276 for (ep = ehead; ep != NULL; ep = ep->next)
281 eprint(const struct utmpentry *ep)
283 print(ep->name, ep->line, (time_t)ep->tv.tv_sec, ep->host, ep->pid,
284 ep->term, ep->exit, ep->sess, ep->type);
288 print(const char *name, const char *line, time_t t, const char *host,
289 pid_t pid, uint16_t term, uint16_t xit, uint16_t sess, uint16_t type)
293 static time_t now = 0;
295 const char *types = NULL;
301 for (i = 0; ut_type_names[i].type >= 0; i++) {
302 types = ut_type_names[i].name;
303 if (ut_type_names[i].type == type)
307 if (show_term || show_idle) {
311 if (stat(line, &sb) == 0) {
312 state = (sb.st_mode & 020) ? '+' : '-';
313 idle = now - sb.st_atime;
318 (void)printf("%-*.*s ", maxname, maxname, name);
321 (void)printf("%c ", state);
323 (void)printf("%-*.*s ", maxline, maxline, line);
324 (void)printf("%.12s ", ctime(&t) + 4);
329 else if (idle < (24 * 60 * 60))
330 (void)printf("%02ld:%02ld ",
331 (long)(idle / (60 * 60)),
332 (long)(idle % (60 * 60)) / 60);
334 (void)printf(" old ");
336 (void)printf("\t%6d", pid);
340 (void)printf("\tnew=%c old=%c", term, xit);
342 (void)printf("\tterm=%d exit=%d", term, xit);
343 (void)printf(" sess=%d", sess);
344 (void)printf(" type=%s ", types);
349 (void)printf("\t(%.*s)", maxhost, host);
356 (void)printf("%-*.*s ", maxname, maxname, "USER");
361 (void)printf("%-*.*s ", maxline, maxline, "LINE");
362 (void)printf("WHEN ");
365 (void)printf("IDLE ");
366 (void)printf("\t PID");
368 (void)printf("\tCOMMENT");
375 quick(const char *fname)
377 struct utmpentry *ehead, *ep;
380 (void)getutentries(fname, &ehead);
381 for (ep = ehead; ep != NULL; ep = ep->next) {
382 (void)printf("%-*s ", maxname, ep->name);
383 if ((++num % 8) == 0)
389 (void)printf("# users = %d\n", num);
395 (void)fprintf(stderr, "Usage: %s [-abdHlmqrsTtuv] [file]\n\t%s am i\n",
396 getprogname(), getprogname());