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 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
35 static const char copyright[] =
36 "@(#) Copyright (c) 1993\n\
37 The Regents of the University of California. All rights reserved.\n";
41 static const char sccsid[] = "@(#)touch.c 8.1 (Berkeley) 6/6/93";
44 #include <sys/types.h>
58 void stime_arg1(char *, struct timeval *);
59 void stime_arg2(char *, int, struct timeval *);
60 void stime_file(char *, struct timeval *);
61 int timeoffset(char *);
65 main(int argc, char *argv[])
69 int (*stat_f)(const char *, struct stat *);
70 int (*utimes_f)(const char *, const struct timeval *);
71 int Aflag, aflag, cflag, mflag, ch, fd, len, rval, timeset;
75 myname = basename(argv[0]);
76 Aflag = aflag = cflag = mflag = timeset = 0;
79 if (gettimeofday(&tv[0], NULL))
80 err(1, "gettimeofday");
82 while ((ch = getopt(argc, argv, "A:acfhmr:t:")) != -1)
85 Aflag = timeoffset(optarg);
94 /* No-op for compatibility. */
106 stime_file(optarg, tv);
110 stime_arg1(optarg, tv);
119 if (aflag == 0 && mflag == 0)
125 * We're setting the time to an offset from a specified
126 * time. God knows why, but it means that we can set
127 * that time once and for all here.
130 tv[0].tv_sec += Aflag;
132 tv[1].tv_sec += Aflag;
133 Aflag = 0; /* done our job */
137 * If no -r or -t flag, at least two operands, the first of
138 * which is an 8 or 10 digit number, use the obsolete time
139 * specification, otherwise use the current time.
142 strtol(argv[0], &p, 10);
144 if (*p == '\0' && (len == 8 || len == 10)) {
146 stime_arg2(*argv++, len == 10, tv);
149 /* Both times default to the same. */
159 for (rval = 0; *argv; ++argv) {
160 /* See if the file exists. */
161 if (stat_f(*argv, &sb) != 0) {
162 if (errno != ENOENT) {
168 /* Create the file. */
170 O_WRONLY | O_CREAT, DEFFILEMODE);
171 if (fd == -1 || fstat(fd, &sb) || close(fd)) {
177 /* If using the current time, we're done. */
185 TIMESPEC_TO_TIMEVAL(&tv[0], &sb.st_atim);
187 TIMESPEC_TO_TIMEVAL(&tv[1], &sb.st_mtim);
190 * We're adjusting the times based on the file times, not a
191 * specified time (that gets handled above).
195 TIMESPEC_TO_TIMEVAL(&tv[0], &sb.st_atim);
196 tv[0].tv_sec += Aflag;
199 TIMESPEC_TO_TIMEVAL(&tv[1], &sb.st_mtim);
200 tv[1].tv_sec += Aflag;
205 if (!utimes_f(*argv, tv))
208 /* If the user specified a time, nothing else we can do. */
209 if (timeset || Aflag) {
216 * System V and POSIX 1003.1 require that a NULL argument
217 * set the access/modification times to the current time.
218 * The permission checks are different, too, in that the
219 * ability to write the file is sufficient. Take a shot.
221 if (!utimes_f(*argv, NULL))
230 #define ATOI2(ar) ((ar)[0] - '0') * 10 + ((ar)[1] - '0'); (ar) += 2;
233 stime_arg1(char *arg, struct timeval *tvp)
239 /* Start with the current time. */
241 if ((t = localtime(&now)) == NULL)
243 /* [[CC]YY]MMDDhhmm[.SS] */
244 if ((p = strchr(arg, '.')) == NULL)
245 t->tm_sec = 0; /* Seconds defaults to 0. */
247 if (strlen(p + 1) != 2)
250 t->tm_sec = ATOI2(p);
254 switch(strlen(arg)) {
255 case 12: /* CCYYMMDDhhmm */
256 t->tm_year = ATOI2(arg);
260 case 10: /* YYMMDDhhmm */
262 yearset = ATOI2(arg);
263 t->tm_year += yearset;
265 yearset = ATOI2(arg);
267 t->tm_year = yearset + 2000;
269 t->tm_year = yearset + 1900;
271 t->tm_year -= 1900; /* Convert to UNIX time. */
273 case 8: /* MMDDhhmm */
274 t->tm_mon = ATOI2(arg);
275 --t->tm_mon; /* Convert from 01-12 to 00-11 */
276 t->tm_mday = ATOI2(arg);
277 t->tm_hour = ATOI2(arg);
278 t->tm_min = ATOI2(arg);
284 t->tm_isdst = -1; /* Figure out DST. */
285 tvp[0].tv_sec = tvp[1].tv_sec = mktime(t);
286 if (tvp[0].tv_sec == -1)
288 "out of range or illegal time specification: [[CC]YY]MMDDhhmm[.SS]");
290 tvp[0].tv_usec = tvp[1].tv_usec = 0;
294 stime_arg2(char *arg, int year, struct timeval *tvp)
298 /* Start with the current time. */
300 if ((t = localtime(&now)) == NULL)
303 t->tm_mon = ATOI2(arg); /* MMDDhhmm[yy] */
304 --t->tm_mon; /* Convert from 01-12 to 00-11 */
305 t->tm_mday = ATOI2(arg);
306 t->tm_hour = ATOI2(arg);
307 t->tm_min = ATOI2(arg);
309 t->tm_year = ATOI2(arg);
310 if (t->tm_year < 39) /* support 2000-2038 not 1902-1969 */
314 t->tm_isdst = -1; /* Figure out DST. */
315 tvp[0].tv_sec = tvp[1].tv_sec = mktime(t);
316 if (tvp[0].tv_sec == -1)
318 "out of range or illegal time specification: MMDDhhmm[yy]");
320 tvp[0].tv_usec = tvp[1].tv_usec = 0;
323 /* Calculate a time offset in seconds, given an arg of the format [-]HHMMSS. */
325 timeoffset(char *arg)
334 switch (strlen(arg)) {
335 default: /* invalid */
336 errx(1, "Invalid offset spec, must be [-][[HH]MM]SS");
342 offset = offset * 60 + ATOI2(arg);
345 offset = offset * 60 + ATOI2(arg);
354 stime_file(char *fname, struct timeval *tvp)
358 if (stat(fname, &sb))
360 TIMESPEC_TO_TIMEVAL(tvp, &sb.st_atim);
361 TIMESPEC_TO_TIMEVAL(tvp + 1, &sb.st_mtim);
367 fprintf(stderr, "usage:\n" "%s [-A [-][[hh]mm]SS] [-achm] [-r file] "
368 "[-t [[CC]YY]MMDDhhmm[.SS]] file ...\n", myname);