Annotation of src/usr.bin/last/last.c, Revision 1.51
1.51 ! deraadt 1: /* $OpenBSD: last.c,v 1.50 2015/10/29 03:00:31 deraadt Exp $ */
1.1 deraadt 2: /* $NetBSD: last.c,v 1.6 1994/12/24 16:49:02 cgd Exp $ */
3:
4: /*
5: * Copyright (c) 1987, 1993, 1994
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
1.26 millert 16: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: */
32:
33: #include <sys/stat.h>
34:
1.35 chl 35: #include <ctype.h>
1.1 deraadt 36: #include <err.h>
37: #include <fcntl.h>
1.38 fgsch 38: #include <libgen.h>
1.1 deraadt 39: #include <paths.h>
40: #include <signal.h>
41: #include <stdio.h>
42: #include <stdlib.h>
43: #include <string.h>
44: #include <time.h>
45: #include <unistd.h>
1.45 deraadt 46: #include <limits.h>
1.1 deraadt 47: #include <utmp.h>
48:
49: #define NO 0 /* false/no */
50: #define YES 1 /* true/yes */
1.18 mickey 51: #define ATOI2(ar) ((ar)[0] - '0') * 10 + ((ar)[1] - '0'); (ar) += 2;
1.1 deraadt 52:
53: static struct utmp buf[1024]; /* utmp read buffer */
54:
1.33 deraadt 55: struct arg {
1.1 deraadt 56: char *name; /* argument */
57: #define HOST_TYPE -2
58: #define TTY_TYPE -3
59: #define USER_TYPE -4
60: int type; /* type of arg */
1.33 deraadt 61: struct arg *next; /* linked list pointer */
62: } *arglist;
1.1 deraadt 63:
1.33 deraadt 64: struct ttytab {
1.1 deraadt 65: time_t logout; /* log out time */
66: char tty[UT_LINESIZE + 1]; /* terminal name */
1.33 deraadt 67: struct ttytab*next; /* linked list pointer */
68: } *ttylist;
1.1 deraadt 69:
70: static time_t currentout; /* current logout value */
1.33 deraadt 71: static long maxrec = -1; /* records to display */
1.1 deraadt 72: static char *file = _PATH_WTMP; /* wtmp file */
1.6 mickey 73: static int fulltime = 0; /* Display seconds? */
1.33 deraadt 74: static time_t snaptime = 0; /* report only at this time */
75: static int calculate = 0;
76: static int seconds = 0;
1.1 deraadt 77:
1.19 millert 78: void addarg(int, char *);
1.33 deraadt 79: struct ttytab *addtty(char *);
1.19 millert 80: void hostconv(char *);
81: void onintr(int);
82: char *ttyconv(char *);
83: time_t dateconv(char *);
84: int want(struct utmp *, int);
85: void wtmp(void);
86: void checkargs(void);
1.40 guenther 87: void print_entry(const struct utmp *);
1.22 deraadt 88: void usage(void);
1.1 deraadt 89:
1.28 deraadt 90: #define NAME_WIDTH 9
1.14 fgsch 91: #define HOST_WIDTH 24
1.48 millert 92:
93: #define SECSPERDAY (24 * 60 * 60)
1.13 deraadt 94:
1.1 deraadt 95: int
1.27 deraadt 96: main(int argc, char *argv[])
1.1 deraadt 97: {
1.31 millert 98: const char *errstr;
1.33 deraadt 99: int ch, lastch = '\0', newarg = 1, prevoptind = 1;
1.50 deraadt 100:
1.32 millert 101: while ((ch = getopt(argc, argv, "0123456789cf:h:n:st:d:T")) != -1) {
1.1 deraadt 102: switch (ch) {
103: case '0': case '1': case '2': case '3': case '4':
104: case '5': case '6': case '7': case '8': case '9':
105: /*
106: * kludge: last was originally designed to take
107: * a number after a dash.
108: */
1.32 millert 109: if (newarg || !isdigit(lastch))
110: maxrec = 0;
111: else if (maxrec > INT_MAX / 10)
112: usage();
113: maxrec = (maxrec * 10) + (ch - '0');
1.1 deraadt 114: break;
1.9 downsj 115: case 'c':
1.46 deraadt 116: calculate = 1;
1.9 downsj 117: break;
1.1 deraadt 118: case 'f':
119: file = optarg;
120: break;
121: case 'h':
122: hostconv(optarg);
123: addarg(HOST_TYPE, optarg);
124: break;
1.31 millert 125: case 'n':
126: maxrec = strtonum(optarg, 0, LONG_MAX, &errstr);
127: if (errstr != NULL)
128: errx(1, "number of lines is %s: %s", errstr,
129: optarg);
130: if (maxrec == 0)
131: exit(0);
132: break;
1.9 downsj 133: case 's':
1.46 deraadt 134: seconds = 1;
1.9 downsj 135: break;
1.1 deraadt 136: case 't':
137: addarg(TTY_TYPE, ttyconv(optarg));
138: break;
1.4 jdm 139: case 'd':
140: snaptime = dateconv(optarg);
141: break;
1.6 mickey 142: case 'T':
1.9 downsj 143: fulltime = 1;
1.6 mickey 144: break;
1.1 deraadt 145: default:
1.22 deraadt 146: usage();
1.1 deraadt 147: }
1.32 millert 148: lastch = ch;
149: newarg = optind != prevoptind;
150: prevoptind = optind;
151: }
152: if (maxrec == 0)
153: exit(0);
1.51 ! deraadt 154:
! 155: if (unveil(file, "r") == -1)
! 156: err(1, "unveil");
! 157: if (pledge("stdio rpath", NULL) == -1)
! 158: err(1, "pledge");
1.1 deraadt 159:
160: if (argc) {
1.43 millert 161: setvbuf(stdout, NULL, _IOLBF, 0);
1.1 deraadt 162: for (argv += optind; *argv; ++argv) {
163: #define COMPATIBILITY
164: #ifdef COMPATIBILITY
165: /* code to allow "last p5" to work */
166: addarg(TTY_TYPE, ttyconv(*argv));
167: #endif
168: addarg(USER_TYPE, *argv);
169: }
170: }
1.18 mickey 171:
1.5 jdm 172: checkargs();
1.1 deraadt 173: wtmp();
174: exit(0);
175: }
176:
177: /*
1.33 deraadt 178: * if snaptime is set, print warning if usernames, or -t or -h
179: * flags are also provided
1.5 jdm 180: */
181: void
1.27 deraadt 182: checkargs(void)
1.5 jdm 183: {
1.18 mickey 184: int ttyflag = 0;
1.33 deraadt 185: struct arg *step;
1.5 jdm 186:
1.33 deraadt 187: if (!snaptime || !arglist)
1.5 jdm 188: return;
189:
190: for (step = arglist; step; step = step->next)
191: switch (step->type) {
192: case HOST_TYPE:
1.7 deraadt 193: (void)fprintf(stderr,
194: "Warning: Ignoring hostname flag\n");
1.5 jdm 195: break;
196: case TTY_TYPE:
1.18 mickey 197: if (!ttyflag) { /* don't print this twice */
1.7 deraadt 198: (void)fprintf(stderr,
199: "Warning: Ignoring tty flag\n");
1.5 jdm 200: ttyflag = 1;
201: }
202: break;
203: case USER_TYPE:
1.7 deraadt 204: (void)fprintf(stderr,
205: "Warning: Ignoring username[s]\n");
1.5 jdm 206: break;
207: default:
1.20 millert 208: break;
1.5 jdm 209: /* PRINT NOTHING */
210: }
1.18 mickey 211: }
1.5 jdm 212:
1.40 guenther 213: void
214: print_entry(const struct utmp *bp)
215: {
216: printf("%-*.*s %-*.*s %-*.*s ",
217: NAME_WIDTH, UT_NAMESIZE, bp->ut_name,
218: UT_LINESIZE, UT_LINESIZE, bp->ut_line,
219: HOST_WIDTH, UT_HOSTSIZE, bp->ut_host);
220:
221: if (seconds)
222: printf("%lld", (long long)bp->ut_time);
223: else {
224: struct tm *tm;
225:
226: tm = localtime(&bp->ut_time);
227: if (tm == NULL) {
228: /* bogus entry? format as epoch time... */
229: printf("%lld", (long long)bp->ut_time);
230: } else {
231: char tim[40];
232:
233: strftime(tim, sizeof tim,
234: fulltime ? "%a %b %d %H:%M:%S" : "%a %b %d %H:%M",
235: tm);
236: printf("%s", tim);
237: }
238: }
239: }
240:
1.5 jdm 241:
242: /*
1.33 deraadt 243: * read through the wtmp file
1.1 deraadt 244: */
245: void
1.27 deraadt 246: wtmp(void)
1.1 deraadt 247: {
1.33 deraadt 248: time_t delta, total = 0;
249: int timesize, wfd, snapfound = 0;
1.44 tedu 250: char *ct, *crmsg = "invalid";
1.33 deraadt 251: struct utmp *bp;
252: struct stat stb;
253: ssize_t bytes;
1.8 deraadt 254: off_t bl;
1.33 deraadt 255: struct ttytab *T;
256:
1.1 deraadt 257: if ((wfd = open(file, O_RDONLY, 0)) < 0 || fstat(wfd, &stb) == -1)
258: err(1, "%s", file);
259: bl = (stb.st_size + sizeof(buf) - 1) / sizeof(buf);
260:
1.6 mickey 261: if (fulltime)
262: timesize = 8; /* HH:MM:SS */
263: else
264: timesize = 5; /* HH:MM */
265:
1.1 deraadt 266: (void)time(&buf[0].ut_time);
267: (void)signal(SIGINT, onintr);
268: (void)signal(SIGQUIT, onintr);
269:
270: while (--bl >= 0) {
1.11 millert 271: if (lseek(wfd, bl * sizeof(buf), SEEK_SET) == -1 ||
1.1 deraadt 272: (bytes = read(wfd, buf, sizeof(buf))) == -1)
273: err(1, "%s", file);
274: for (bp = &buf[bytes / sizeof(buf[0]) - 1]; bp >= buf; --bp) {
275: /*
276: * if the terminal line is '~', the machine stopped.
277: * see utmp(5) for more info.
278: */
279: if (bp->ut_line[0] == '~' && !bp->ut_line[1]) {
280: /* everybody just logged out */
281: for (T = ttylist; T; T = T->next)
282: T->logout = -bp->ut_time;
283: currentout = -bp->ut_time;
284: crmsg = strncmp(bp->ut_name, "shutdown",
285: UT_NAMESIZE) ? "crash" : "shutdown";
1.33 deraadt 286:
1.18 mickey 287: /*
288: * if we're in snapshot mode, we want to
1.4 jdm 289: * exit if this shutdown/reboot appears
290: * while we we are tracking the active
291: * range
292: */
1.33 deraadt 293: if (snaptime && snapfound) {
294: close(wfd);
1.4 jdm 295: return;
1.33 deraadt 296: }
297:
1.18 mickey 298: /*
1.4 jdm 299: * don't print shutdown/reboot entries
1.18 mickey 300: * unless flagged for
301: */
1.5 jdm 302: if (want(bp, NO)) {
1.40 guenther 303: print_entry(bp);
304: printf("\n");
1.33 deraadt 305: if (maxrec != -1 && !--maxrec) {
306: close(wfd);
1.1 deraadt 307: return;
1.33 deraadt 308: }
1.1 deraadt 309: }
310: continue;
311: }
1.33 deraadt 312:
1.1 deraadt 313: /*
314: * if the line is '{' or '|', date got set; see
315: * utmp(5) for more info.
316: */
1.33 deraadt 317: if ((bp->ut_line[0] == '{' || bp->ut_line[0] == '|') &&
318: !bp->ut_line[1]) {
1.5 jdm 319: if (want(bp, NO)) {
1.40 guenther 320: print_entry(bp);
321: printf("\n");
1.33 deraadt 322: if (maxrec && !--maxrec) {
323: close(wfd);
1.1 deraadt 324: return;
1.33 deraadt 325: }
1.1 deraadt 326: }
327: continue;
328: }
1.33 deraadt 329:
1.1 deraadt 330: /* find associated tty */
331: for (T = ttylist;; T = T->next) {
332: if (!T) {
333: /* add new one */
334: T = addtty(bp->ut_line);
335: break;
336: }
337: if (!strncmp(T->tty, bp->ut_line, UT_LINESIZE))
338: break;
339: }
1.33 deraadt 340:
1.18 mickey 341: /*
1.4 jdm 342: * print record if not in snapshot mode and wanted
343: * or in snapshot mode and in snapshot range
344: */
345: if (bp->ut_name[0] &&
1.28 deraadt 346: ((want(bp, YES)) || (bp->ut_time < snaptime &&
347: (T->logout > snaptime || !T->logout ||
348: T->logout < 0)))) {
1.4 jdm 349: snapfound = 1;
1.40 guenther 350: print_entry(bp);
351: printf(" ");
1.33 deraadt 352:
1.1 deraadt 353: if (!T->logout)
354: puts(" still logged in");
355: else {
356: if (T->logout < 0) {
357: T->logout = -T->logout;
358: printf("- %s", crmsg);
1.9 downsj 359: } else {
1.18 mickey 360: if (seconds)
1.40 guenther 361: printf("- %lld",
362: (long long)T->logout);
1.9 downsj 363: else
364: printf("- %*.*s",
365: timesize, timesize,
366: ctime(&T->logout)+11);
1.1 deraadt 367: }
368: delta = T->logout - bp->ut_time;
1.9 downsj 369: if (seconds)
1.40 guenther 370: printf(" (%lld)\n",
371: (long long)delta);
1.9 downsj 372: else {
373: if (delta < SECSPERDAY)
374: printf(" (%*.*s)\n",
375: timesize, timesize,
376: asctime(gmtime(&delta))+11);
377: else
1.39 guenther 378: printf(" (%lld+%*.*s)\n",
379: (long long)delta / SECSPERDAY,
1.9 downsj 380: timesize, timesize,
381: asctime(gmtime(&delta))+11);
382: }
383: if (calculate)
384: total += delta;
1.1 deraadt 385: }
1.33 deraadt 386: if (maxrec != -1 && !--maxrec) {
387: close(wfd);
1.1 deraadt 388: return;
1.33 deraadt 389: }
1.1 deraadt 390: }
391: T->logout = bp->ut_time;
392: }
1.9 downsj 393: }
1.33 deraadt 394: close(wfd);
1.9 downsj 395: if (calculate) {
396: if ((total / SECSPERDAY) > 0) {
397: int days = (total / SECSPERDAY);
398: total -= (days * SECSPERDAY);
399:
400: printf("\nTotal time: %d days, %*.*s\n",
1.28 deraadt 401: days, timesize, timesize,
402: asctime(gmtime(&total))+11);
1.9 downsj 403: } else
404: printf("\nTotal time: %*.*s\n",
1.28 deraadt 405: timesize, timesize,
406: asctime(gmtime(&total))+11);
1.1 deraadt 407: }
408: ct = ctime(&buf[0].ut_time);
1.37 lum 409: printf("\n%s begins %10.10s %*.*s %4.4s\n", basename(file), ct,
410: timesize, timesize, ct + 11, ct + 20);
1.1 deraadt 411: }
412:
413: /*
1.33 deraadt 414: * see if want this entry
1.1 deraadt 415: */
416: int
1.27 deraadt 417: want(struct utmp *bp, int check)
1.1 deraadt 418: {
1.33 deraadt 419: struct arg *step;
1.1 deraadt 420:
1.15 deraadt 421: if (check) {
1.1 deraadt 422: /*
1.42 okan 423: * some entries, such as ftp and uucp, will
424: * include process name plus id; exclude entries
425: * that start with 'console' and 'tty' from
426: * having the process id stripped.
1.1 deraadt 427: */
1.42 okan 428: if ((strncmp(bp->ut_line, "console", strlen("console")) != 0) &&
429: (strncmp(bp->ut_line, "tty", strlen("tty")) != 0)) {
430: char *s;
431: for (s = bp->ut_line;
432: *s != '\0' && !isdigit((unsigned char)*s); s++)
433: ;
434: *s = '\0';
435: }
1.15 deraadt 436: }
1.5 jdm 437:
1.18 mickey 438: if (snaptime) /* if snaptime is set, return NO */
1.5 jdm 439: return (NO);
440:
1.1 deraadt 441: if (!arglist)
442: return (YES);
443:
444: for (step = arglist; step; step = step->next)
1.33 deraadt 445: switch (step->type) {
1.1 deraadt 446: case HOST_TYPE:
447: if (!strncasecmp(step->name, bp->ut_host, UT_HOSTSIZE))
448: return (YES);
449: break;
450: case TTY_TYPE:
451: if (!strncmp(step->name, bp->ut_line, UT_LINESIZE))
452: return (YES);
453: break;
454: case USER_TYPE:
455: if (!strncmp(step->name, bp->ut_name, UT_NAMESIZE))
456: return (YES);
457: break;
1.5 jdm 458: }
459:
1.1 deraadt 460: return (NO);
461: }
462:
463: /*
1.33 deraadt 464: * add an entry to a linked list of arguments
1.1 deraadt 465: */
466: void
1.27 deraadt 467: addarg(int type, char *arg)
1.1 deraadt 468: {
1.33 deraadt 469: struct arg *cur;
1.1 deraadt 470:
1.49 deraadt 471: if (!(cur = malloc((u_int)sizeof(struct arg))))
1.1 deraadt 472: err(1, "malloc failure");
473: cur->next = arglist;
474: cur->type = type;
475: cur->name = arg;
476: arglist = cur;
477: }
478:
479: /*
1.33 deraadt 480: * add an entry to a linked list of ttys
1.1 deraadt 481: */
1.33 deraadt 482: struct ttytab *
1.27 deraadt 483: addtty(char *ttyname)
1.1 deraadt 484: {
1.33 deraadt 485: struct ttytab *cur;
1.1 deraadt 486:
1.49 deraadt 487: if (!(cur = malloc((u_int)sizeof(struct ttytab))))
1.1 deraadt 488: err(1, "malloc failure");
489: cur->next = ttylist;
490: cur->logout = currentout;
491: memmove(cur->tty, ttyname, UT_LINESIZE);
492: return (ttylist = cur);
493: }
494:
495: /*
1.33 deraadt 496: * convert the hostname to search pattern; if the supplied host name
497: * has a domain attached that is the same as the current domain, rip
498: * off the domain suffix since that's what login(1) does.
1.1 deraadt 499: */
500: void
1.27 deraadt 501: hostconv(char *arg)
1.1 deraadt 502: {
1.45 deraadt 503: static char *hostdot, name[HOST_NAME_MAX+1];
1.1 deraadt 504: static int first = 1;
505: char *argdot;
506:
507: if (!(argdot = strchr(arg, '.')))
508: return;
509: if (first) {
510: first = 0;
511: if (gethostname(name, sizeof(name)))
512: err(1, "gethostname");
513: hostdot = strchr(name, '.');
514: }
515: if (hostdot && !strcasecmp(hostdot, argdot))
516: *argdot = '\0';
517: }
518:
519: /*
1.33 deraadt 520: * convert tty to correct name.
1.1 deraadt 521: */
522: char *
1.27 deraadt 523: ttyconv(char *arg)
1.1 deraadt 524: {
1.33 deraadt 525: size_t len = 8;
1.1 deraadt 526: char *mval;
527:
528: /*
529: * kludge -- we assume that all tty's end with
530: * a two character suffix.
531: */
532: if (strlen(arg) == 2) {
533: /* either 6 for "ttyxx" or 8 for "console" */
1.21 deraadt 534: if (!(mval = malloc(len)))
1.1 deraadt 535: err(1, "malloc failure");
536: if (!strcmp(arg, "co"))
1.21 deraadt 537: (void)strlcpy(mval, "console", len);
538: else
539: snprintf(mval, len, "tty%s", arg);
1.1 deraadt 540: return (mval);
541: }
542: if (!strncmp(arg, _PATH_DEV, sizeof(_PATH_DEV) - 1))
543: return (arg + 5);
544: return (arg);
545: }
1.4 jdm 546:
1.18 mickey 547: /*
548: * Convert the snapshot time in command line given in the format
1.23 deraadt 549: * [[[CC]YY]MMDD]hhmm[.SS]] to a time_t.
1.18 mickey 550: * Derived from atime_arg1() in usr.bin/touch/touch.c
1.4 jdm 551: */
552: time_t
1.27 deraadt 553: dateconv(char *arg)
1.4 jdm 554: {
1.7 deraadt 555: time_t timet;
556: struct tm *t;
557: int yearset;
558: char *p;
559:
560: /* Start with the current time. */
561: if (time(&timet) < 0)
562: err(1, "time");
563: if ((t = localtime(&timet)) == NULL)
564: err(1, "localtime");
565:
1.23 deraadt 566: /* [[[CC]YY]MMDD]hhmm[.SS] */
1.7 deraadt 567: if ((p = strchr(arg, '.')) == NULL)
1.18 mickey 568: t->tm_sec = 0; /* Seconds defaults to 0. */
1.7 deraadt 569: else {
570: if (strlen(p + 1) != 2)
571: goto terr;
572: *p++ = '\0';
573: t->tm_sec = ATOI2(p);
574: }
575:
576: yearset = 0;
577: switch (strlen(arg)) {
1.22 deraadt 578: case 12: /* CCYYMMDDhhmm */
1.7 deraadt 579: t->tm_year = ATOI2(arg);
580: t->tm_year *= 100;
581: yearset = 1;
1.29 otto 582: /* FALLTHROUGH */
1.22 deraadt 583: case 10: /* YYMMDDhhmm */
1.7 deraadt 584: if (yearset) {
585: yearset = ATOI2(arg);
586: t->tm_year += yearset;
587: } else {
588: yearset = ATOI2(arg);
589: if (yearset < 69)
590: t->tm_year = yearset + 2000;
591: else
592: t->tm_year = yearset + 1900;
593: }
1.28 deraadt 594: t->tm_year -= 1900; /* Convert to UNIX time. */
1.7 deraadt 595: /* FALLTHROUGH */
596: case 8: /* MMDDhhmm */
597: t->tm_mon = ATOI2(arg);
1.18 mickey 598: --t->tm_mon; /* Convert from 01-12 to 00-11 */
1.7 deraadt 599: t->tm_mday = ATOI2(arg);
600: t->tm_hour = ATOI2(arg);
601: t->tm_min = ATOI2(arg);
602: break;
603: case 4: /* hhmm */
604: t->tm_hour = ATOI2(arg);
605: t->tm_min = ATOI2(arg);
606: break;
607: default:
608: goto terr;
609: }
1.18 mickey 610: t->tm_isdst = -1; /* Figure out DST. */
1.7 deraadt 611: timet = mktime(t);
612: if (timet == -1)
1.28 deraadt 613: terr: errx(1, "out of range or illegal time specification: "
614: "[[[CC]YY]MMDD]hhmm[.SS]");
1.22 deraadt 615: return (timet);
1.4 jdm 616: }
617:
1.1 deraadt 618:
619: /*
1.33 deraadt 620: * on interrupt, we inform the user how far we've gotten
1.1 deraadt 621: */
622: void
1.27 deraadt 623: onintr(int signo)
1.1 deraadt 624: {
1.47 deraadt 625: char str[1024], *ct, ctbuf[26];
1.1 deraadt 626:
1.47 deraadt 627: ct = ctime_r(&buf[0].ut_time, ctbuf);
1.25 deraadt 628: snprintf(str, sizeof str, "\ninterrupted %10.10s %8.8s \n",
629: ct, ct + 11);
630: write(STDOUT_FILENO, str, strlen(str));
1.1 deraadt 631: if (signo == SIGINT)
1.25 deraadt 632: _exit(1);
1.22 deraadt 633: }
634:
635: void
636: usage(void)
637: {
638: extern char *__progname;
639:
640: fprintf(stderr,
1.34 jmc 641: "usage: %s [-csT] [-d date] [-f file] [-h host]"
642: " [-n number] [-t tty] [user ...]\n", __progname);
1.22 deraadt 643: exit(1);
1.1 deraadt 644: }
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