1/*
2 * Copyright (c) 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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.
20 *
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
31 * SUCH DAMAGE.
32 */
33
34#ifndef lint
35static char copyright[] =
36"@(#) Copyright (c) 1993\n\
37 The Regents of the University of California. All rights reserved.\n";
38#endif /* not lint */
39
40#ifndef lint
41static char sccsid[] = "@(#)touch.c 8.1 (Berkeley) 6/6/93";
42#endif /* not lint */
43
44#include <sys/types.h>
45#include <sys/stat.h>
46#include <sys/time.h>
47
48#include <err.h>
49#include <errno.h>
50#include <fcntl.h>
51#include <stdio.h>
52#include <stdlib.h>
53#include <string.h>
54#include <time.h>
55#include <unistd.h>
56
57int rw __P((char *, struct stat *, int));
58void stime_arg1 __P((char *, struct timeval *));
59void stime_arg2 __P((char *, int, struct timeval *));
60void stime_file __P((char *, struct timeval *));
61void usage __P((void));
62
63int
64main(argc, argv)
65 int argc;
66 char *argv[];
67{
68 struct stat sb;
69 struct timeval tv[2];
70 int aflag, cflag, fflag, mflag, ch, fd, len, rval, timeset;
71 char *p;
72
73 aflag = cflag = fflag = mflag = timeset = 0;
74 if (gettimeofday(&tv[0], NULL))
75 err(1, "gettimeofday");
76
77 while ((ch = getopt(argc, argv, "acfmr:t:")) != -1)
78 switch(ch) {
79 case 'a':
80 aflag = 1;
81 break;
82 case 'c':
83 cflag = 1;
84 break;
85 case 'f':
86 fflag = 1;
87 break;
88 case 'm':
89 mflag = 1;
90 break;
91 case 'r':
92 timeset = 1;
93 stime_file(optarg, tv);
94 break;
95 case 't':
96 timeset = 1;
97 stime_arg1(optarg, tv);
98 break;
99 case '?':
100 default:
101 usage();
102 }
103 argc -= optind;
104 argv += optind;
105
106 /* Default is both -a and -m. */
107 if (aflag == 0 && mflag == 0)
108 aflag = mflag = 1;
109
110 /*
111 * If no -r or -t flag, at least two operands, the first of which
112 * is an 8 or 10 digit number, use the obsolete time specification.
113 */
114 if (!timeset && argc > 1) {
115 (void)strtol(argv[0], &p, 10);
116 len = p - argv[0];
117 if (*p == '\0' && (len == 8 || len == 10)) {
118 timeset = 1;
119 stime_arg2(*argv++, len == 10, tv);
120 }
121 }
122
123 /* Otherwise use the current time of day. */
124 if (!timeset)
125 tv[1] = tv[0];
126
127 if (*argv == NULL)
128 usage();
129
130 for (rval = 0; *argv; ++argv) {
131 /* See if the file exists. */
132 if (stat(*argv, &sb))
133 if (!cflag) {
134 /* Create the file. */
135 fd = open(*argv,
136 O_WRONLY | O_CREAT, DEFFILEMODE);
137 if (fd == -1 || fstat(fd, &sb) || close(fd)) {
138 rval = 1;
139 warn("%s", *argv);
140 continue;
141 }
142
143 /* If using the current time, we're done. */
144 if (!timeset)
145 continue;
146 } else
147 continue;
148
149 if (!aflag)
150 TIMESPEC_TO_TIMEVAL(&tv[0], &sb.st_atimespec);
151 if (!mflag)
152 TIMESPEC_TO_TIMEVAL(&tv[1], &sb.st_mtimespec);
153
154 /* Try utimes(2). */
155 if (!utimes(*argv, tv))
156 continue;
157
158 /* If the user specified a time, nothing else we can do. */
159 if (timeset) {
160 rval = 1;
161 warn("%s", *argv);
162 }
163
164 /*
165 * System V and POSIX 1003.1 require that a NULL argument
166 * set the access/modification times to the current time.
167 * The permission checks are different, too, in that the
168 * ability to write the file is sufficient. Take a shot.
169 */
170 if (!utimes(*argv, NULL))
171 continue;
172
173 /* Try reading/writing. */
174 if (rw(*argv, &sb, fflag))
175 rval = 1;
176 }
177 exit(rval);
178}
179
180#define ATOI2(ar) ((ar)[0] - '0') * 10 + ((ar)[1] - '0'); (ar) += 2;
181
182void
183stime_arg1(arg, tvp)
184 char *arg;
185 struct timeval *tvp;
186{
187 time_t now;
188 struct tm *t;
189 int yearset;
190 char *p;
191 /* Start with the current time. */
192 now = tvp[0].tv_sec;
193 if ((t = localtime(&now)) == NULL)
194 err(1, "localtime");
195 /* [[CC]YY]MMDDhhmm[.SS] */
196 if ((p = strchr(arg, '.')) == NULL)
197 t->tm_sec = 0; /* Seconds defaults to 0. */
198 else {
199 if (strlen(p + 1) != 2)
200 goto terr;
201 *p++ = '\0';
202 t->tm_sec = ATOI2(p);
203 }
204
205 yearset = 0;
206 switch(strlen(arg)) {
207 case 12: /* CCYYMMDDhhmm */
208 t->tm_year = ATOI2(arg);
209 t->tm_year *= 100;
210 yearset = 1;
211 /* FALLTHOUGH */
212 case 10: /* YYMMDDhhmm */
213 if (yearset) {
214 yearset = ATOI2(arg);
215 t->tm_year += yearset;
216 } else {
217 yearset = ATOI2(arg);
218 if (yearset < 69)
219 t->tm_year = yearset + 2000;
220 else
221 t->tm_year = yearset + 1900;
222 }
223 t->tm_year -= 1900; /* Convert to UNIX time. */
224 /* FALLTHROUGH */
225 case 8: /* MMDDhhmm */
226 t->tm_mon = ATOI2(arg);
227 --t->tm_mon; /* Convert from 01-12 to 00-11 */
228 t->tm_mday = ATOI2(arg);
229 t->tm_hour = ATOI2(arg);
230 t->tm_min = ATOI2(arg);
231 break;
232 default:
233 goto terr;
234 }
235
236 t->tm_isdst = -1; /* Figure out DST. */
237 tvp[0].tv_sec = tvp[1].tv_sec = mktime(t);
238 if (tvp[0].tv_sec == -1)
239terr: errx(1,
240 "out of range or illegal time specification: [[CC]YY]MMDDhhmm[.SS]");
241
242 tvp[0].tv_usec = tvp[1].tv_usec = 0;
243}
244
245void
246stime_arg2(arg, year, tvp)
247 char *arg;
248 int year;
249 struct timeval *tvp;
250{
251 time_t now;
252 struct tm *t;
253 /* Start with the current time. */
254 now = tvp[0].tv_sec;
255 if ((t = localtime(&now)) == NULL)
256 err(1, "localtime");
257
258 t->tm_mon = ATOI2(arg); /* MMDDhhmm[yy] */
259 --t->tm_mon; /* Convert from 01-12 to 00-11 */
260 t->tm_mday = ATOI2(arg);
261 t->tm_hour = ATOI2(arg);
262 t->tm_min = ATOI2(arg);
| 1/*
2 * Copyright (c) 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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.
20 *
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
31 * SUCH DAMAGE.
32 */
33
34#ifndef lint
35static char copyright[] =
36"@(#) Copyright (c) 1993\n\
37 The Regents of the University of California. All rights reserved.\n";
38#endif /* not lint */
39
40#ifndef lint
41static char sccsid[] = "@(#)touch.c 8.1 (Berkeley) 6/6/93";
42#endif /* not lint */
43
44#include <sys/types.h>
45#include <sys/stat.h>
46#include <sys/time.h>
47
48#include <err.h>
49#include <errno.h>
50#include <fcntl.h>
51#include <stdio.h>
52#include <stdlib.h>
53#include <string.h>
54#include <time.h>
55#include <unistd.h>
56
57int rw __P((char *, struct stat *, int));
58void stime_arg1 __P((char *, struct timeval *));
59void stime_arg2 __P((char *, int, struct timeval *));
60void stime_file __P((char *, struct timeval *));
61void usage __P((void));
62
63int
64main(argc, argv)
65 int argc;
66 char *argv[];
67{
68 struct stat sb;
69 struct timeval tv[2];
70 int aflag, cflag, fflag, mflag, ch, fd, len, rval, timeset;
71 char *p;
72
73 aflag = cflag = fflag = mflag = timeset = 0;
74 if (gettimeofday(&tv[0], NULL))
75 err(1, "gettimeofday");
76
77 while ((ch = getopt(argc, argv, "acfmr:t:")) != -1)
78 switch(ch) {
79 case 'a':
80 aflag = 1;
81 break;
82 case 'c':
83 cflag = 1;
84 break;
85 case 'f':
86 fflag = 1;
87 break;
88 case 'm':
89 mflag = 1;
90 break;
91 case 'r':
92 timeset = 1;
93 stime_file(optarg, tv);
94 break;
95 case 't':
96 timeset = 1;
97 stime_arg1(optarg, tv);
98 break;
99 case '?':
100 default:
101 usage();
102 }
103 argc -= optind;
104 argv += optind;
105
106 /* Default is both -a and -m. */
107 if (aflag == 0 && mflag == 0)
108 aflag = mflag = 1;
109
110 /*
111 * If no -r or -t flag, at least two operands, the first of which
112 * is an 8 or 10 digit number, use the obsolete time specification.
113 */
114 if (!timeset && argc > 1) {
115 (void)strtol(argv[0], &p, 10);
116 len = p - argv[0];
117 if (*p == '\0' && (len == 8 || len == 10)) {
118 timeset = 1;
119 stime_arg2(*argv++, len == 10, tv);
120 }
121 }
122
123 /* Otherwise use the current time of day. */
124 if (!timeset)
125 tv[1] = tv[0];
126
127 if (*argv == NULL)
128 usage();
129
130 for (rval = 0; *argv; ++argv) {
131 /* See if the file exists. */
132 if (stat(*argv, &sb))
133 if (!cflag) {
134 /* Create the file. */
135 fd = open(*argv,
136 O_WRONLY | O_CREAT, DEFFILEMODE);
137 if (fd == -1 || fstat(fd, &sb) || close(fd)) {
138 rval = 1;
139 warn("%s", *argv);
140 continue;
141 }
142
143 /* If using the current time, we're done. */
144 if (!timeset)
145 continue;
146 } else
147 continue;
148
149 if (!aflag)
150 TIMESPEC_TO_TIMEVAL(&tv[0], &sb.st_atimespec);
151 if (!mflag)
152 TIMESPEC_TO_TIMEVAL(&tv[1], &sb.st_mtimespec);
153
154 /* Try utimes(2). */
155 if (!utimes(*argv, tv))
156 continue;
157
158 /* If the user specified a time, nothing else we can do. */
159 if (timeset) {
160 rval = 1;
161 warn("%s", *argv);
162 }
163
164 /*
165 * System V and POSIX 1003.1 require that a NULL argument
166 * set the access/modification times to the current time.
167 * The permission checks are different, too, in that the
168 * ability to write the file is sufficient. Take a shot.
169 */
170 if (!utimes(*argv, NULL))
171 continue;
172
173 /* Try reading/writing. */
174 if (rw(*argv, &sb, fflag))
175 rval = 1;
176 }
177 exit(rval);
178}
179
180#define ATOI2(ar) ((ar)[0] - '0') * 10 + ((ar)[1] - '0'); (ar) += 2;
181
182void
183stime_arg1(arg, tvp)
184 char *arg;
185 struct timeval *tvp;
186{
187 time_t now;
188 struct tm *t;
189 int yearset;
190 char *p;
191 /* Start with the current time. */
192 now = tvp[0].tv_sec;
193 if ((t = localtime(&now)) == NULL)
194 err(1, "localtime");
195 /* [[CC]YY]MMDDhhmm[.SS] */
196 if ((p = strchr(arg, '.')) == NULL)
197 t->tm_sec = 0; /* Seconds defaults to 0. */
198 else {
199 if (strlen(p + 1) != 2)
200 goto terr;
201 *p++ = '\0';
202 t->tm_sec = ATOI2(p);
203 }
204
205 yearset = 0;
206 switch(strlen(arg)) {
207 case 12: /* CCYYMMDDhhmm */
208 t->tm_year = ATOI2(arg);
209 t->tm_year *= 100;
210 yearset = 1;
211 /* FALLTHOUGH */
212 case 10: /* YYMMDDhhmm */
213 if (yearset) {
214 yearset = ATOI2(arg);
215 t->tm_year += yearset;
216 } else {
217 yearset = ATOI2(arg);
218 if (yearset < 69)
219 t->tm_year = yearset + 2000;
220 else
221 t->tm_year = yearset + 1900;
222 }
223 t->tm_year -= 1900; /* Convert to UNIX time. */
224 /* FALLTHROUGH */
225 case 8: /* MMDDhhmm */
226 t->tm_mon = ATOI2(arg);
227 --t->tm_mon; /* Convert from 01-12 to 00-11 */
228 t->tm_mday = ATOI2(arg);
229 t->tm_hour = ATOI2(arg);
230 t->tm_min = ATOI2(arg);
231 break;
232 default:
233 goto terr;
234 }
235
236 t->tm_isdst = -1; /* Figure out DST. */
237 tvp[0].tv_sec = tvp[1].tv_sec = mktime(t);
238 if (tvp[0].tv_sec == -1)
239terr: errx(1,
240 "out of range or illegal time specification: [[CC]YY]MMDDhhmm[.SS]");
241
242 tvp[0].tv_usec = tvp[1].tv_usec = 0;
243}
244
245void
246stime_arg2(arg, year, tvp)
247 char *arg;
248 int year;
249 struct timeval *tvp;
250{
251 time_t now;
252 struct tm *t;
253 /* Start with the current time. */
254 now = tvp[0].tv_sec;
255 if ((t = localtime(&now)) == NULL)
256 err(1, "localtime");
257
258 t->tm_mon = ATOI2(arg); /* MMDDhhmm[yy] */
259 --t->tm_mon; /* Convert from 01-12 to 00-11 */
260 t->tm_mday = ATOI2(arg);
261 t->tm_hour = ATOI2(arg);
262 t->tm_min = ATOI2(arg);
|
265
266 t->tm_isdst = -1; /* Figure out DST. */
267 tvp[0].tv_sec = tvp[1].tv_sec = mktime(t);
268 if (tvp[0].tv_sec == -1)
269 errx(1,
270 "out of range or illegal time specification: MMDDhhmm[yy]");
271
272 tvp[0].tv_usec = tvp[1].tv_usec = 0;
273}
274
275void
276stime_file(fname, tvp)
277 char *fname;
278 struct timeval *tvp;
279{
280 struct stat sb;
281
282 if (stat(fname, &sb))
283 err(1, "%s", fname);
284 TIMESPEC_TO_TIMEVAL(tvp, &sb.st_atimespec);
285 TIMESPEC_TO_TIMEVAL(tvp + 1, &sb.st_mtimespec);
286}
287
288int
289rw(fname, sbp, force)
290 char *fname;
291 struct stat *sbp;
292 int force;
293{
294 int fd, needed_chmod, rval;
295 u_char byte;
296
297 /* Try regular files and directories. */
298 if (!S_ISREG(sbp->st_mode) && !S_ISDIR(sbp->st_mode)) {
299 warnx("%s: %s", fname, strerror(EFTYPE));
300 return (1);
301 }
302
303 needed_chmod = rval = 0;
304 if ((fd = open(fname, O_RDWR, 0)) == -1) {
305 if (!force || chmod(fname, DEFFILEMODE))
306 goto err;
307 if ((fd = open(fname, O_RDWR, 0)) == -1)
308 goto err;
309 needed_chmod = 1;
310 }
311
312 if (sbp->st_size != 0) {
313 if (read(fd, &byte, sizeof(byte)) != sizeof(byte))
314 goto err;
315 if (lseek(fd, (off_t)0, SEEK_SET) == -1)
316 goto err;
317 if (write(fd, &byte, sizeof(byte)) != sizeof(byte))
318 goto err;
319 } else {
320 if (write(fd, &byte, sizeof(byte)) != sizeof(byte)) {
321err: rval = 1;
322 warn("%s", fname);
323 } else if (ftruncate(fd, (off_t)0)) {
324 rval = 1;
325 warn("%s: file modified", fname);
326 }
327 }
328
329 if (close(fd) && rval != 1) {
330 rval = 1;
331 warn("%s", fname);
332 }
333 if (needed_chmod && chmod(fname, sbp->st_mode) && rval != 1) {
334 rval = 1;
335 warn("%s: permissions modified", fname);
336 }
337 return (rval);
338}
339
340void
341usage()
342{
343 (void)fprintf(stderr,
344 "usage: touch [-acfm] [-r file] [-t time] file ...\n");
345 exit(1);
346}
| 268
269 t->tm_isdst = -1; /* Figure out DST. */
270 tvp[0].tv_sec = tvp[1].tv_sec = mktime(t);
271 if (tvp[0].tv_sec == -1)
272 errx(1,
273 "out of range or illegal time specification: MMDDhhmm[yy]");
274
275 tvp[0].tv_usec = tvp[1].tv_usec = 0;
276}
277
278void
279stime_file(fname, tvp)
280 char *fname;
281 struct timeval *tvp;
282{
283 struct stat sb;
284
285 if (stat(fname, &sb))
286 err(1, "%s", fname);
287 TIMESPEC_TO_TIMEVAL(tvp, &sb.st_atimespec);
288 TIMESPEC_TO_TIMEVAL(tvp + 1, &sb.st_mtimespec);
289}
290
291int
292rw(fname, sbp, force)
293 char *fname;
294 struct stat *sbp;
295 int force;
296{
297 int fd, needed_chmod, rval;
298 u_char byte;
299
300 /* Try regular files and directories. */
301 if (!S_ISREG(sbp->st_mode) && !S_ISDIR(sbp->st_mode)) {
302 warnx("%s: %s", fname, strerror(EFTYPE));
303 return (1);
304 }
305
306 needed_chmod = rval = 0;
307 if ((fd = open(fname, O_RDWR, 0)) == -1) {
308 if (!force || chmod(fname, DEFFILEMODE))
309 goto err;
310 if ((fd = open(fname, O_RDWR, 0)) == -1)
311 goto err;
312 needed_chmod = 1;
313 }
314
315 if (sbp->st_size != 0) {
316 if (read(fd, &byte, sizeof(byte)) != sizeof(byte))
317 goto err;
318 if (lseek(fd, (off_t)0, SEEK_SET) == -1)
319 goto err;
320 if (write(fd, &byte, sizeof(byte)) != sizeof(byte))
321 goto err;
322 } else {
323 if (write(fd, &byte, sizeof(byte)) != sizeof(byte)) {
324err: rval = 1;
325 warn("%s", fname);
326 } else if (ftruncate(fd, (off_t)0)) {
327 rval = 1;
328 warn("%s: file modified", fname);
329 }
330 }
331
332 if (close(fd) && rval != 1) {
333 rval = 1;
334 warn("%s", fname);
335 }
336 if (needed_chmod && chmod(fname, sbp->st_mode) && rval != 1) {
337 rval = 1;
338 warn("%s: permissions modified", fname);
339 }
340 return (rval);
341}
342
343void
344usage()
345{
346 (void)fprintf(stderr,
347 "usage: touch [-acfm] [-r file] [-t time] file ...\n");
348 exit(1);
349}
|