2 * Copyright (c) 1980, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * @(#) Copyright (c) 1980, 1993 The Regents of the University of California. All rights reserved.
34 * @(#)lastcomm.c 8.1 (Berkeley) 6/6/93
35 * $FreeBSD: src/usr.bin/lastcomm/lastcomm.c,v 1.10.2.3 2001/10/01 12:51:15 dd Exp $
36 * $DragonFly: src/usr.bin/lastcomm/lastcomm.c,v 1.3 2003/10/04 20:36:47 hmp Exp $
39 #include <sys/param.h>
51 #include "pathnames.h"
55 const char *getdev(dev_t);
56 int requested(char *[], struct acct *);
57 static void usage(void);
59 #define AC_UTIME 1 /* user */
60 #define AC_STIME 2 /* system */
61 #define AC_ETIME 4 /* elapsed */
62 #define AC_CTIME 8 /* user + system time, default */
64 #define AC_BTIME 16 /* starting time */
65 #define AC_FTIME 32 /* exit time (starting time + elapsed time )*/
67 #define AC_HZ ((double)AHZ)
70 main(int argc, char **argv)
82 acctfile = _PATH_ACCT;
83 while ((ch = getopt(argc, argv, "f:usecSE")) != -1)
90 flags |= AC_UTIME; /* user time */
93 flags |= AC_STIME; /* system time */
96 flags |= AC_ETIME; /* elapsed time */
99 flags |= AC_CTIME; /* user + system time */
103 flags |= AC_BTIME; /* starting time */
106 /* exit time (starting time + elapsed time )*/
115 /* default user + system time and starting time */
117 flags = AC_CTIME | AC_BTIME;
124 if ((fp = fopen(acctfile, "r")) == NULL || fstat(fileno(fp), &sb))
125 err(1, "%s", acctfile);
128 * Round off to integral number of accounting records, probably
129 * not necessary, but it doesn't hurt.
131 size = sb.st_size - sb.st_size % sizeof(struct acct);
133 /* Check if any records to display. */
134 if ((unsigned)size < sizeof(struct acct))
138 * Seek to before the last entry in the file; use lseek(2) in case
139 * the file is bigger than a "long".
141 size -= sizeof(struct acct);
142 if (lseek(fileno(fp), size, SEEK_SET) == -1)
143 err(1, "%s", acctfile);
146 if (fread(&ab, sizeof(struct acct), 1, fp) != 1)
147 err(1, "%s", acctfile);
149 if (fseek(fp, 2 * -(long)sizeof(struct acct), SEEK_CUR) == -1)
150 err(1, "%s", acctfile);
154 size -= sizeof(struct acct);
156 if (ab.ac_comm[0] == '\0') {
158 ab.ac_comm[1] = '\0';
160 for (p = &ab.ac_comm[0];
161 p < &ab.ac_comm[AC_COMM_LEN] && *p; ++p)
164 if (*argv && !requested(argv, &ab))
167 (void)printf("%-*.*s %-7s %-*s %-*s",
168 AC_COMM_LEN, AC_COMM_LEN, ab.ac_comm,
169 flagbits(ab.ac_flag),
170 UT_NAMESIZE, user_from_uid(ab.ac_uid, 0),
171 UT_LINESIZE, getdev(ab.ac_tty));
174 /* user + system time */
175 if (flags & AC_CTIME) {
176 (void)printf(" %6.2f secs",
177 (expand(ab.ac_utime) +
178 expand(ab.ac_stime))/AC_HZ);
182 if (flags & AC_UTIME) {
183 (void)printf(" %6.2f us", expand(ab.ac_utime)/AC_HZ);
187 if (flags & AC_STIME) {
188 (void)printf(" %6.2f sy", expand(ab.ac_stime)/AC_HZ);
192 if (flags & AC_ETIME) {
193 (void)printf(" %8.2f es", expand(ab.ac_etime)/AC_HZ);
197 if (flags & AC_BTIME) {
198 (void)printf(" %.16s", ctime(&ab.ac_btime));
201 /* exit time (starting time + elapsed time )*/
202 if (flags & AC_FTIME) {
204 t += (time_t)(expand(ab.ac_etime)/AC_HZ);
205 (void)printf(" %.16s", ctime(&t));
229 static char flags[20] = "-";
232 #define BIT(flag, ch) if (f & flag) *p++ = ch
245 requested(char **argv, struct acct *acp)
250 p = user_from_uid(acp->ac_uid, 0);
251 if (!strcmp(p, *argv))
253 if ((p = getdev(acp->ac_tty)) && !strcmp(p, *argv))
255 if (!strncmp(acp->ac_comm, *argv, AC_COMM_LEN))
264 static dev_t lastdev = (dev_t)-1;
265 static const char *lastname;
267 if (dev == NODEV) /* Special case. */
269 if (dev == lastdev) /* One-element cache. */
272 lastname = devname(dev, S_IFCHR);
279 (void)fprintf(stderr,
280 "usage: lastcomm [-EScesu] [ -f file ] [command ...] [user ...] [tty ...]\n");