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32 #include <sys/types.h>
47 static void stime_arg1(const char *, struct timespec *);
48 static void stime_arg2(const char *, int, struct timespec *);
49 static void stime_darg(const char *, struct timespec *);
50 static void stime_file(const char *, struct timespec *);
51 static int timeoffset(const char *);
52 static void usage(const char *);
55 main(int argc, char *argv[])
58 struct timespec ts[2];
60 int Aflag, aflag, cflag, mflag, ch, fd, len, rval, timeset;
64 myname = basename(argv[0]);
65 Aflag = aflag = cflag = mflag = timeset = 0;
67 ts[0].tv_sec = ts[1].tv_sec = 0;
68 ts[0].tv_nsec = ts[1].tv_nsec = UTIME_NOW;
70 while ((ch = getopt(argc, argv, "A:acd:fhmr:t:")) != -1)
73 Aflag = timeoffset(optarg);
83 stime_darg(optarg, ts);
86 /* No-op for compatibility. */
90 atflag = AT_SYMLINK_NOFOLLOW;
97 stime_file(optarg, ts);
101 stime_arg1(optarg, ts);
109 if (aflag == 0 && mflag == 0)
115 * We're setting the time to an offset from a specified
116 * time. God knows why, but it means that we can set
117 * that time once and for all here.
120 ts[0].tv_sec += Aflag;
122 ts[1].tv_sec += Aflag;
123 Aflag = 0; /* done our job */
127 * If no -r or -t flag, at least two operands, the first of
128 * which is an 8 or 10 digit number, use the obsolete time
129 * specification, otherwise use the current time.
132 strtol(argv[0], &p, 10);
134 if (*p == '\0' && (len == 8 || len == 10)) {
136 stime_arg2(*argv++, len == 10, ts);
139 /* Both times default to the same. */
144 ts[0].tv_nsec = UTIME_OMIT;
146 ts[1].tv_nsec = UTIME_OMIT;
154 for (rval = 0; *argv; ++argv) {
155 /* See if the file exists. */
156 if (fstatat(AT_FDCWD, *argv, &sb, atflag) != 0) {
157 if (errno != ENOENT) {
163 /* Create the file. */
165 O_WRONLY | O_CREAT, DEFFILEMODE);
171 if (fstat(fd, &sb) < 0) {
180 /* If using the current time, we're done. */
188 * We're adjusting the times based on the file times, not a
189 * specified time (that gets handled above).
194 ts[0].tv_sec += Aflag;
198 ts[1].tv_sec += Aflag;
202 if (!utimensat(AT_FDCWD, *argv, ts, atflag))
211 #define ATOI2(ar) ((ar)[0] - '0') * 10 + ((ar)[1] - '0'); (ar) += 2;
214 stime_arg1(const char *arg, struct timespec *tvp)
222 if ((t = localtime(&now)) == NULL)
224 /* [[CC]YY]MMDDhhmm[.SS] */
225 if ((p = strchr(arg, '.')) == NULL)
226 t->tm_sec = 0; /* Seconds defaults to 0. */
228 if (strlen(p + 1) != 2)
231 t->tm_sec = ATOI2(p);
235 switch(strlen(arg)) {
236 case 12: /* CCYYMMDDhhmm */
237 t->tm_year = ATOI2(arg);
241 case 10: /* YYMMDDhhmm */
243 yearset = ATOI2(arg);
244 t->tm_year += yearset;
246 yearset = ATOI2(arg);
248 t->tm_year = yearset + 2000;
250 t->tm_year = yearset + 1900;
252 t->tm_year -= 1900; /* Convert to UNIX time. */
254 case 8: /* MMDDhhmm */
255 t->tm_mon = ATOI2(arg);
256 --t->tm_mon; /* Convert from 01-12 to 00-11 */
257 t->tm_mday = ATOI2(arg);
258 t->tm_hour = ATOI2(arg);
259 t->tm_min = ATOI2(arg);
265 t->tm_isdst = -1; /* Figure out DST. */
266 tvp[0].tv_sec = tvp[1].tv_sec = mktime(t);
267 if (tvp[0].tv_sec == -1)
270 tvp[0].tv_nsec = tvp[1].tv_nsec = 0;
274 errx(1, "out of range or illegal time specification: [[CC]YY]MMDDhhmm[.SS]");
278 stime_arg2(const char *arg, int year, struct timespec *tvp)
284 if ((t = localtime(&now)) == NULL)
287 t->tm_mon = ATOI2(arg); /* MMDDhhmm[yy] */
288 --t->tm_mon; /* Convert from 01-12 to 00-11 */
289 t->tm_mday = ATOI2(arg);
290 t->tm_hour = ATOI2(arg);
291 t->tm_min = ATOI2(arg);
293 t->tm_year = ATOI2(arg);
294 if (t->tm_year < 39) /* support 2000-2038 not 1902-1969 */
298 t->tm_isdst = -1; /* Figure out DST. */
299 tvp[0].tv_sec = tvp[1].tv_sec = mktime(t);
300 if (tvp[0].tv_sec == -1)
302 "out of range or illegal time specification: MMDDhhmm[yy]");
304 tvp[0].tv_nsec = tvp[1].tv_nsec = 0;
308 stime_darg(const char *arg, struct timespec *tvp)
310 struct tm t = { .tm_sec = 0 };
311 const char *fmt, *colon;
317 colon = strchr(arg, ':');
318 if (colon == NULL || strchr(colon + 1, ':') == NULL)
320 fmt = strchr(arg, 'T') != NULL ? "%Y-%m-%dT%H:%M:%S" :
322 p = strptime(arg, fmt, &t);
325 /* POSIX: must have at least one digit after dot */
326 if ((*p == '.' || *p == ',') && isdigit((unsigned char)p[1])) {
329 while (isdigit((unsigned char)*p)) {
330 tvp[0].tv_nsec += val * (*p - '0');
342 tvp[0].tv_sec = isutc ? timegm(&t) : mktime(&t);
348 errx(1, "out of range or illegal time specification: YYYY-MM-DDThh:mm:SS[.frac][tz]");
351 /* Calculate a time offset in seconds, given an arg of the format [-]HHMMSS. */
353 timeoffset(const char *arg)
362 switch (strlen(arg)) {
363 default: /* invalid */
364 errx(1, "Invalid offset spec, must be [-][[HH]MM]SS");
370 offset = offset * 60 + ATOI2(arg);
373 offset = offset * 60 + ATOI2(arg);
382 stime_file(const char *fname, struct timespec *tsp)
386 if (stat(fname, &sb))
393 usage(const char *myname)
395 fprintf(stderr, "usage: %s [-A [-][[hh]mm]SS] [-achm] [-r file] "
396 "[-t [[CC]YY]MMDDhhmm[.SS]]\n"
397 " [-d YYYY-MM-DDThh:mm:SS[.frac][tz]] "
398 "file ...\n", myname);