1 /*
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1980, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #ifndef lint
33 static const char copyright[] =
34 "@(#) Copyright (c) 1980, 1993\n\
35 The Regents of the University of California. All rights reserved.\n";
36 #endif /* not lint */
37
38 #ifndef lint
39 #if 0
40 static char sccsid[] = "@(#)lastcomm.c 8.1 (Berkeley) 6/6/93";
41 #endif
42 #endif /* not lint */
43 #include <sys/cdefs.h>
44 #include <sys/param.h>
45 #include <sys/stat.h>
46 #include <sys/acct.h>
47
48 #include <ctype.h>
49 #include <err.h>
50 #include <errno.h>
51 #include <pwd.h>
52 #include <stdio.h>
53 #include <stdlib.h>
54 #include <string.h>
55 #include <time.h>
56 #include <unistd.h>
57 #include "pathnames.h"
58
59 /*XXX*/#include <inttypes.h>
60
61 time_t expand(u_int);
62 char *flagbits(int);
63 const char *getdev(dev_t);
64 int readrec_forward(FILE *f, struct acctv3 *av3);
65 int readrec_backward(FILE *f, struct acctv3 *av3);
66 int requested(char *[], struct acctv3 *);
67 static void usage(void);
68
69 #define AC_UTIME 1 /* user */
70 #define AC_STIME 2 /* system */
71 #define AC_ETIME 4 /* elapsed */
72 #define AC_CTIME 8 /* user + system time, default */
73
74 #define AC_BTIME 16 /* starting time */
75 #define AC_FTIME 32 /* exit time (starting time + elapsed time )*/
76
77 int
main(int argc,char * argv[])78 main(int argc, char *argv[])
79 {
80 struct acctv3 ab;
81 char *p;
82 FILE *fp;
83 int (*readrec)(FILE *f, struct acctv3 *av3);
84 time_t t;
85 int ch, rv;
86 const char *acctfile, *format;
87 char buf[1024];
88 int flags = 0;
89
90 acctfile = _PATH_ACCT;
91 format = NULL;
92 while ((ch = getopt(argc, argv, "f:usecSE")) != -1)
93 switch((char)ch) {
94 case 'f':
95 acctfile = optarg;
96 break;
97
98 case 'u':
99 flags |= AC_UTIME; /* user time */
100 break;
101 case 's':
102 flags |= AC_STIME; /* system time */
103 break;
104 case 'e':
105 flags |= AC_ETIME; /* elapsed time */
106 break;
107 case 'c':
108 flags |= AC_CTIME; /* user + system time */
109 break;
110
111 case 'S':
112 flags |= AC_BTIME; /* starting time */
113 break;
114 case 'E':
115 /* exit time (starting time + elapsed time )*/
116 flags |= AC_FTIME;
117 break;
118
119 case '?':
120 default:
121 usage();
122 }
123
124 /* default user + system time and starting time */
125 if (!flags) {
126 flags = AC_CTIME | AC_BTIME;
127 }
128
129 argc -= optind;
130 argv += optind;
131
132 if (argc > 0 && **argv == '+') {
133 format = *argv + 1; /* skip + */
134 argc--;
135 argv++;
136 }
137
138 if (strcmp(acctfile, "-") == 0) {
139 fp = stdin;
140 readrec = readrec_forward;
141 } else {
142 /* Open the file. */
143 if ((fp = fopen(acctfile, "r")) == NULL)
144 err(1, "could not open %s", acctfile);
145 if (fseek(fp, 0l, SEEK_END) == -1)
146 err(1, "seek to end of %s failed", acctfile);
147 readrec = readrec_backward;
148 }
149
150 while ((rv = readrec(fp, &ab)) == 1) {
151 for (p = &ab.ac_comm[0];
152 p < &ab.ac_comm[AC_COMM_LEN] && *p; ++p)
153 if (!isprint(*p))
154 *p = '?';
155
156 if (*argv && !requested(argv, &ab))
157 continue;
158
159 (void)printf("%-*.*s %-7s %-*s %-8s",
160 AC_COMM_LEN, AC_COMM_LEN, ab.ac_comm,
161 flagbits(ab.ac_flagx),
162 MAXLOGNAME - 1, user_from_uid(ab.ac_uid, 0),
163 getdev(ab.ac_tty));
164
165
166 /* user + system time */
167 if (flags & AC_CTIME) {
168 (void)printf(" %6.3f secs",
169 (ab.ac_utime + ab.ac_stime) / 1000000);
170 }
171
172 /* usr time */
173 if (flags & AC_UTIME) {
174 (void)printf(" %6.3f us", ab.ac_utime / 1000000);
175 }
176
177 /* system time */
178 if (flags & AC_STIME) {
179 (void)printf(" %6.3f sy", ab.ac_stime / 1000000);
180 }
181
182 /* elapsed time */
183 if (flags & AC_ETIME) {
184 (void)printf(" %8.3f es", ab.ac_etime / 1000000);
185 }
186
187 /* starting time */
188 if (flags & AC_BTIME) {
189 if (format != NULL) {
190 (void)strftime(buf, sizeof(buf), format,
191 localtime(&ab.ac_btime));
192 (void)printf(" %s", buf);
193 } else
194 (void)printf(" %.19s", ctime(&ab.ac_btime));
195 }
196
197 /* exit time (starting time + elapsed time )*/
198 if (flags & AC_FTIME) {
199 t = ab.ac_btime;
200 t += (time_t)(ab.ac_etime / 1000000);
201 if (format != NULL) {
202 (void)strftime(buf, sizeof(buf), format,
203 localtime(&t));
204 (void)printf(" %s", buf);
205 } else
206 (void)printf(" %.19s", ctime(&t));
207 }
208 printf("\n");
209 }
210 if (rv == EOF)
211 err(1, "read record from %s failed", acctfile);
212
213 if (fflush(stdout))
214 err(1, "stdout");
215 exit(0);
216 }
217
218 char *
flagbits(int f)219 flagbits(int f)
220 {
221 static char flags[20] = "-";
222 char *p;
223
224 #define BIT(flag, ch) if (f & flag) *p++ = ch
225
226 p = flags + 1;
227 BIT(ASU, 'S');
228 BIT(AFORK, 'F');
229 BIT(ACOMPAT, 'C');
230 BIT(ACORE, 'D');
231 BIT(AXSIG, 'X');
232 *p = '\0';
233 return (flags);
234 }
235
236 int
requested(char * argv[],struct acctv3 * acp)237 requested(char *argv[], struct acctv3 *acp)
238 {
239 const char *p;
240
241 do {
242 p = user_from_uid(acp->ac_uid, 0);
243 if (!strcmp(p, *argv))
244 return (1);
245 if ((p = getdev(acp->ac_tty)) && !strcmp(p, *argv))
246 return (1);
247 if (!strncmp(acp->ac_comm, *argv, AC_COMM_LEN))
248 return (1);
249 } while (*++argv);
250 return (0);
251 }
252
253 const char *
getdev(dev_t dev)254 getdev(dev_t dev)
255 {
256 static dev_t lastdev = (dev_t)-1;
257 static const char *lastname;
258
259 if (dev == NODEV) /* Special case. */
260 return ("__");
261 if (dev == lastdev) /* One-element cache. */
262 return (lastname);
263 lastdev = dev;
264 lastname = devname(dev, S_IFCHR);
265 return (lastname);
266 }
267
268 static void
usage(void)269 usage(void)
270 {
271 (void)fprintf(stderr,
272 "usage: lastcomm [-EScesu] [-f file] [+format] [command ...] "
273 "[user ...] [terminal ...]\n");
274 exit(1);
275 }
276