2 * SPDX-License-Identifier: BSD-3-Clause
5 * The Regents of the University of California. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
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
32 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
37 static const char copyright[] =
38 "@(#) Copyright (c) 1993\n\
39 The Regents of the University of California. All rights reserved.\n";
43 static const char sccsid[] = "@(#)touch.c 8.1 (Berkeley) 6/6/93";
46 #include <sys/types.h>
61 static void stime_arg1(const char *, struct timespec *);
62 static void stime_arg2(const char *, int, struct timespec *);
63 static void stime_darg(const char *, struct timespec *);
64 static void stime_file(const char *, struct timespec *);
65 static int timeoffset(const char *);
66 static void usage(const char *);
69 main(int argc, char *argv[])
72 struct timespec ts[2];
74 int Aflag, aflag, cflag, mflag, ch, fd, len, rval, timeset;
78 myname = basename(argv[0]);
79 Aflag = aflag = cflag = mflag = timeset = 0;
81 ts[0].tv_sec = ts[1].tv_sec = 0;
82 ts[0].tv_nsec = ts[1].tv_nsec = UTIME_NOW;
84 while ((ch = getopt(argc, argv, "A:acd:fhmr:t:")) != -1)
87 Aflag = timeoffset(optarg);
97 stime_darg(optarg, ts);
100 /* No-op for compatibility. */
104 atflag = AT_SYMLINK_NOFOLLOW;
111 stime_file(optarg, ts);
115 stime_arg1(optarg, ts);
123 if (aflag == 0 && mflag == 0)
129 * We're setting the time to an offset from a specified
130 * time. God knows why, but it means that we can set
131 * that time once and for all here.
134 ts[0].tv_sec += Aflag;
136 ts[1].tv_sec += Aflag;
137 Aflag = 0; /* done our job */
141 * If no -r or -t flag, at least two operands, the first of
142 * which is an 8 or 10 digit number, use the obsolete time
143 * specification, otherwise use the current time.
146 strtol(argv[0], &p, 10);
148 if (*p == '\0' && (len == 8 || len == 10)) {
150 stime_arg2(*argv++, len == 10, ts);
153 /* Both times default to the same. */
158 ts[0].tv_nsec = UTIME_OMIT;
160 ts[1].tv_nsec = UTIME_OMIT;
168 for (rval = 0; *argv; ++argv) {
169 /* See if the file exists. */
170 if (fstatat(AT_FDCWD, *argv, &sb, atflag) != 0) {
171 if (errno != ENOENT) {
177 /* Create the file. */
179 O_WRONLY | O_CREAT, DEFFILEMODE);
185 if (fstat(fd, &sb) < 0) {
194 /* If using the current time, we're done. */
202 * We're adjusting the times based on the file times, not a
203 * specified time (that gets handled above).
208 ts[0].tv_sec += Aflag;
212 ts[1].tv_sec += Aflag;
216 if (!utimensat(AT_FDCWD, *argv, ts, atflag))
225 #define ATOI2(ar) ((ar)[0] - '0') * 10 + ((ar)[1] - '0'); (ar) += 2;
228 stime_arg1(const char *arg, struct timespec *tvp)
236 if ((t = localtime(&now)) == NULL)
238 /* [[CC]YY]MMDDhhmm[.SS] */
239 if ((p = strchr(arg, '.')) == NULL)
240 t->tm_sec = 0; /* Seconds defaults to 0. */
242 if (strlen(p + 1) != 2)
245 t->tm_sec = ATOI2(p);
249 switch(strlen(arg)) {
250 case 12: /* CCYYMMDDhhmm */
251 t->tm_year = ATOI2(arg);
255 case 10: /* YYMMDDhhmm */
257 yearset = ATOI2(arg);
258 t->tm_year += yearset;
260 yearset = ATOI2(arg);
262 t->tm_year = yearset + 2000;
264 t->tm_year = yearset + 1900;
266 t->tm_year -= 1900; /* Convert to UNIX time. */
268 case 8: /* MMDDhhmm */
269 t->tm_mon = ATOI2(arg);
270 --t->tm_mon; /* Convert from 01-12 to 00-11 */
271 t->tm_mday = ATOI2(arg);
272 t->tm_hour = ATOI2(arg);
273 t->tm_min = ATOI2(arg);
279 t->tm_isdst = -1; /* Figure out DST. */
280 tvp[0].tv_sec = tvp[1].tv_sec = mktime(t);
281 if (tvp[0].tv_sec == -1)
284 tvp[0].tv_nsec = tvp[1].tv_nsec = 0;
288 errx(1, "out of range or illegal time specification: [[CC]YY]MMDDhhmm[.SS]");
292 stime_arg2(const char *arg, int year, struct timespec *tvp)
298 if ((t = localtime(&now)) == NULL)
301 t->tm_mon = ATOI2(arg); /* MMDDhhmm[yy] */
302 --t->tm_mon; /* Convert from 01-12 to 00-11 */
303 t->tm_mday = ATOI2(arg);
304 t->tm_hour = ATOI2(arg);
305 t->tm_min = ATOI2(arg);
307 t->tm_year = ATOI2(arg);
308 if (t->tm_year < 39) /* support 2000-2038 not 1902-1969 */
312 t->tm_isdst = -1; /* Figure out DST. */
313 tvp[0].tv_sec = tvp[1].tv_sec = mktime(t);
314 if (tvp[0].tv_sec == -1)
316 "out of range or illegal time specification: MMDDhhmm[yy]");
318 tvp[0].tv_nsec = tvp[1].tv_nsec = 0;
322 stime_darg(const char *arg, struct timespec *tvp)
324 struct tm t = { .tm_sec = 0 };
325 const char *fmt, *colon;
331 colon = strchr(arg, ':');
332 if (colon == NULL || strchr(colon + 1, ':') == NULL)
334 fmt = strchr(arg, 'T') != NULL ? "%Y-%m-%dT%H:%M:%S" :
336 p = strptime(arg, fmt, &t);
339 /* POSIX: must have at least one digit after dot */
340 if ((*p == '.' || *p == ',') && isdigit((unsigned char)p[1])) {
343 while (isdigit((unsigned char)*p)) {
344 tvp[0].tv_nsec += val * (*p - '0');
356 tvp[0].tv_sec = isutc ? timegm(&t) : mktime(&t);
362 errx(1, "out of range or illegal time specification: YYYY-MM-DDThh:mm:SS[.frac][tz]");
365 /* Calculate a time offset in seconds, given an arg of the format [-]HHMMSS. */
367 timeoffset(const char *arg)
376 switch (strlen(arg)) {
377 default: /* invalid */
378 errx(1, "Invalid offset spec, must be [-][[HH]MM]SS");
384 offset = offset * 60 + ATOI2(arg);
387 offset = offset * 60 + ATOI2(arg);
396 stime_file(const char *fname, struct timespec *tsp)
400 if (stat(fname, &sb))
407 usage(const char *myname)
409 fprintf(stderr, "usage: %s [-A [-][[hh]mm]SS] [-achm] [-r file] "
410 "[-t [[CC]YY]MMDDhhmm[.SS]]\n"
411 " [-d YYYY-MM-DDThh:mm:SS[.frac][tz]] "
412 "file ...\n", myname);