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>
59 static void stime_arg1(const char *, struct timeval *);
60 static void stime_arg2(const char *, int, struct timeval *);
61 static void stime_darg(const char *, struct timeval *);
62 static void stime_file(const char *, struct timeval *);
63 static int timeoffset(const char *);
64 static void usage(const char *);
67 main(int argc, char *argv[])
71 int (*stat_f)(const char *, struct stat *);
72 int (*utimes_f)(const char *, const struct timeval *);
73 int Aflag, aflag, cflag, mflag, ch, fd, len, rval, timeset;
77 myname = basename(argv[0]);
78 Aflag = aflag = cflag = mflag = timeset = 0;
81 if (gettimeofday(&tv[0], NULL) == -1)
82 err(1, "gettimeofday");
84 while ((ch = getopt(argc, argv, "A:acd:fhmr:t:")) != -1)
87 Aflag = timeoffset(optarg);
97 stime_darg(optarg, tv);
100 /* No-op for compatibility. */
112 stime_file(optarg, tv);
116 stime_arg1(optarg, tv);
124 if (aflag == 0 && mflag == 0)
130 * We're setting the time to an offset from a specified
131 * time. God knows why, but it means that we can set
132 * that time once and for all here.
135 tv[0].tv_sec += Aflag;
137 tv[1].tv_sec += Aflag;
138 Aflag = 0; /* done our job */
142 * If no -r or -t flag, at least two operands, the first of
143 * which is an 8 or 10 digit number, use the obsolete time
144 * specification, otherwise use the current time.
147 strtol(argv[0], &p, 10);
149 if (*p == '\0' && (len == 8 || len == 10)) {
151 stime_arg2(*argv++, len == 10, tv);
154 /* Both times default to the same. */
164 for (rval = 0; *argv; ++argv) {
165 /* See if the file exists. */
166 if (stat_f(*argv, &sb) != 0) {
167 if (errno != ENOENT) {
173 /* Create the file. */
175 O_WRONLY | O_CREAT, DEFFILEMODE);
176 if (fd == -1 || fstat(fd, &sb) || close(fd)) {
182 /* If using the current time, we're done. */
190 TIMESPEC_TO_TIMEVAL(&tv[0], &sb.st_atim);
192 TIMESPEC_TO_TIMEVAL(&tv[1], &sb.st_mtim);
195 * We're adjusting the times based on the file times, not a
196 * specified time (that gets handled above).
200 TIMESPEC_TO_TIMEVAL(&tv[0], &sb.st_atim);
201 tv[0].tv_sec += Aflag;
204 TIMESPEC_TO_TIMEVAL(&tv[1], &sb.st_mtim);
205 tv[1].tv_sec += Aflag;
210 if (!utimes_f(*argv, tv))
213 /* If the user specified a time, nothing else we can do. */
214 if (timeset || Aflag) {
221 * System V and POSIX 1003.1 require that a NULL argument
222 * set the access/modification times to the current time.
223 * The permission checks are different, too, in that the
224 * ability to write the file is sufficient. Take a shot.
226 if (!utimes_f(*argv, NULL))
235 #define ATOI2(ar) ((ar)[0] - '0') * 10 + ((ar)[1] - '0'); (ar) += 2;
238 stime_arg1(const char *arg, struct timeval *tvp)
244 /* Start with the current time. */
246 if ((t = localtime(&now)) == NULL)
248 /* [[CC]YY]MMDDhhmm[.SS] */
249 if ((p = strchr(arg, '.')) == NULL)
250 t->tm_sec = 0; /* Seconds defaults to 0. */
252 if (strlen(p + 1) != 2)
255 t->tm_sec = ATOI2(p);
259 switch(strlen(arg)) {
260 case 12: /* CCYYMMDDhhmm */
261 t->tm_year = ATOI2(arg);
265 case 10: /* YYMMDDhhmm */
267 yearset = ATOI2(arg);
268 t->tm_year += yearset;
270 yearset = ATOI2(arg);
272 t->tm_year = yearset + 2000;
274 t->tm_year = yearset + 1900;
276 t->tm_year -= 1900; /* Convert to UNIX time. */
278 case 8: /* MMDDhhmm */
279 t->tm_mon = ATOI2(arg);
280 --t->tm_mon; /* Convert from 01-12 to 00-11 */
281 t->tm_mday = ATOI2(arg);
282 t->tm_hour = ATOI2(arg);
283 t->tm_min = ATOI2(arg);
289 t->tm_isdst = -1; /* Figure out DST. */
290 tvp[0].tv_sec = tvp[1].tv_sec = mktime(t);
291 if (tvp[0].tv_sec == -1)
294 tvp[0].tv_usec = tvp[1].tv_usec = 0;
298 errx(1, "out of range or illegal time specification: [[CC]YY]MMDDhhmm[.SS]");
302 stime_arg2(const char *arg, int year, struct timeval *tvp)
306 /* Start with the current time. */
308 if ((t = localtime(&now)) == NULL)
311 t->tm_mon = ATOI2(arg); /* MMDDhhmm[yy] */
312 --t->tm_mon; /* Convert from 01-12 to 00-11 */
313 t->tm_mday = ATOI2(arg);
314 t->tm_hour = ATOI2(arg);
315 t->tm_min = ATOI2(arg);
317 t->tm_year = ATOI2(arg);
318 if (t->tm_year < 39) /* support 2000-2038 not 1902-1969 */
322 t->tm_isdst = -1; /* Figure out DST. */
323 tvp[0].tv_sec = tvp[1].tv_sec = mktime(t);
324 if (tvp[0].tv_sec == -1)
326 "out of range or illegal time specification: MMDDhhmm[yy]");
328 tvp[0].tv_usec = tvp[1].tv_usec = 0;
332 stime_darg(const char *arg, struct timeval *tvp)
334 struct tm t = { .tm_sec = 0 };
335 const char *fmt, *colon;
341 colon = strchr(arg, ':');
342 if (colon == NULL || strchr(colon + 1, ':') == NULL)
344 fmt = strchr(arg, 'T') != NULL ? "%Y-%m-%dT%H:%M:%S" :
346 p = strptime(arg, fmt, &t);
349 /* POSIX: must have at least one digit after dot */
350 if ((*p == '.' || *p == ',') && isdigit((unsigned char)p[1])) {
353 while (isdigit((unsigned char)*p)) {
354 tvp[0].tv_usec += val * (*p - '0');
366 tvp[0].tv_sec = isutc ? timegm(&t) : mktime(&t);
372 errx(1, "out of range or illegal time specification: YYYY-MM-DDThh:mm:SS[.frac][tz]");
375 /* Calculate a time offset in seconds, given an arg of the format [-]HHMMSS. */
377 timeoffset(const char *arg)
386 switch (strlen(arg)) {
387 default: /* invalid */
388 errx(1, "Invalid offset spec, must be [-][[HH]MM]SS");
394 offset = offset * 60 + ATOI2(arg);
397 offset = offset * 60 + ATOI2(arg);
406 stime_file(const char *fname, struct timeval *tvp)
410 if (stat(fname, &sb))
412 TIMESPEC_TO_TIMEVAL(tvp, &sb.st_atim);
413 TIMESPEC_TO_TIMEVAL(tvp + 1, &sb.st_mtim);
417 usage(const char *myname)
419 fprintf(stderr, "usage: %s [-A [-][[hh]mm]SS] [-achm] [-r file] "
420 "[-t [[CC]YY]MMDDhhmm[.SS]]\n"
421 " [-d YYYY-MM-DDThh:mm:SS[.frac][tz]] "
422 "file ...\n", myname);