touch.c revision 1.30.2.1
1 1.30.2.1 yamt /* $NetBSD: touch.c,v 1.30.2.1 2012/10/30 19:00:28 yamt Exp $ */ 2 1.9 jtc 3 1.1 cgd /* 4 1.9 jtc * Copyright (c) 1993 5 1.9 jtc * The Regents of the University of California. All rights reserved. 6 1.1 cgd * 7 1.1 cgd * Redistribution and use in source and binary forms, with or without 8 1.1 cgd * modification, are permitted provided that the following conditions 9 1.1 cgd * are met: 10 1.1 cgd * 1. Redistributions of source code must retain the above copyright 11 1.1 cgd * notice, this list of conditions and the following disclaimer. 12 1.1 cgd * 2. Redistributions in binary form must reproduce the above copyright 13 1.1 cgd * notice, this list of conditions and the following disclaimer in the 14 1.1 cgd * documentation and/or other materials provided with the distribution. 15 1.24 agc * 3. Neither the name of the University nor the names of its contributors 16 1.1 cgd * may be used to endorse or promote products derived from this software 17 1.1 cgd * without specific prior written permission. 18 1.1 cgd * 19 1.1 cgd * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 1.1 cgd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 1.1 cgd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 1.1 cgd * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 1.1 cgd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 1.1 cgd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 1.1 cgd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 1.1 cgd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 1.1 cgd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 1.1 cgd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 1.1 cgd * SUCH DAMAGE. 30 1.1 cgd */ 31 1.1 cgd 32 1.15 lukem #include <sys/cdefs.h> 33 1.1 cgd #ifndef lint 34 1.27 lukem __COPYRIGHT("@(#) Copyright (c) 1993\ 35 1.27 lukem The Regents of the University of California. All rights reserved."); 36 1.1 cgd #endif /* not lint */ 37 1.1 cgd 38 1.1 cgd #ifndef lint 39 1.9 jtc #if 0 40 1.11 jtc static char sccsid[] = "@(#)touch.c 8.2 (Berkeley) 4/28/95"; 41 1.9 jtc #endif 42 1.30.2.1 yamt __RCSID("$NetBSD: touch.c,v 1.30.2.1 2012/10/30 19:00:28 yamt Exp $"); 43 1.1 cgd #endif /* not lint */ 44 1.1 cgd 45 1.1 cgd #include <sys/types.h> 46 1.1 cgd #include <sys/stat.h> 47 1.2 glass #include <sys/time.h> 48 1.2 glass 49 1.9 jtc #include <err.h> 50 1.2 glass #include <errno.h> 51 1.2 glass #include <fcntl.h> 52 1.1 cgd #include <stdio.h> 53 1.2 glass #include <stdlib.h> 54 1.2 glass #include <string.h> 55 1.8 jtc #include <locale.h> 56 1.2 glass #include <time.h> 57 1.19 mycroft #include <tzfile.h> 58 1.2 glass #include <unistd.h> 59 1.30.2.1 yamt #include <util.h> 60 1.30.2.1 yamt #include <getopt.h> 61 1.2 glass 62 1.30.2.1 yamt static void stime_arg0(char *, struct timeval *); 63 1.30 joerg static void stime_arg1(char *, struct timeval *); 64 1.30 joerg static void stime_arg2(char *, int, struct timeval *); 65 1.30 joerg static void stime_file(char *, struct timeval *); 66 1.30 joerg __dead static void usage(void); 67 1.1 cgd 68 1.30.2.1 yamt struct option touch_longopts[] = { 69 1.30.2.1 yamt { "date", required_argument, 0, 70 1.30.2.1 yamt 'd' }, 71 1.30.2.1 yamt { "reference", required_argument, 0, 72 1.30.2.1 yamt 'r' }, 73 1.30.2.1 yamt { NULL, 0, 0, 74 1.30.2.1 yamt 0 }, 75 1.30.2.1 yamt }; 76 1.30.2.1 yamt 77 1.2 glass int 78 1.30 joerg main(int argc, char *argv[]) 79 1.1 cgd { 80 1.2 glass struct stat sb; 81 1.2 glass struct timeval tv[2]; 82 1.29 pooka int aflag, cflag, hflag, mflag, ch, fd, len, rval, timeset; 83 1.2 glass char *p; 84 1.30 joerg int (*change_file_times)(const char *, const struct timeval *); 85 1.30 joerg int (*get_file_status)(const char *, struct stat *); 86 1.2 glass 87 1.8 jtc setlocale(LC_ALL, ""); 88 1.8 jtc 89 1.29 pooka aflag = cflag = hflag = mflag = timeset = 0; 90 1.2 glass if (gettimeofday(&tv[0], NULL)) 91 1.2 glass err(1, "gettimeofday"); 92 1.2 glass 93 1.30.2.1 yamt while ((ch = getopt_long(argc, argv, "acd:fhmr:t:", touch_longopts, 94 1.30.2.1 yamt NULL)) != -1) 95 1.2 glass switch(ch) { 96 1.2 glass case 'a': 97 1.2 glass aflag = 1; 98 1.2 glass break; 99 1.1 cgd case 'c': 100 1.2 glass cflag = 1; 101 1.1 cgd break; 102 1.30.2.1 yamt case 'd': 103 1.30.2.1 yamt timeset = 1; 104 1.30.2.1 yamt stime_arg0(optarg, tv); 105 1.30.2.1 yamt break; 106 1.1 cgd case 'f': 107 1.2 glass break; 108 1.12 enami case 'h': 109 1.12 enami hflag = 1; 110 1.12 enami break; 111 1.2 glass case 'm': 112 1.2 glass mflag = 1; 113 1.2 glass break; 114 1.2 glass case 'r': 115 1.2 glass timeset = 1; 116 1.2 glass stime_file(optarg, tv); 117 1.1 cgd break; 118 1.2 glass case 't': 119 1.2 glass timeset = 1; 120 1.2 glass stime_arg1(optarg, tv); 121 1.2 glass break; 122 1.1 cgd case '?': 123 1.1 cgd default: 124 1.1 cgd usage(); 125 1.1 cgd } 126 1.2 glass argc -= optind; 127 1.2 glass argv += optind; 128 1.2 glass 129 1.2 glass /* Default is both -a and -m. */ 130 1.2 glass if (aflag == 0 && mflag == 0) 131 1.2 glass aflag = mflag = 1; 132 1.2 glass 133 1.17 fvdl if (hflag) { 134 1.12 enami cflag = 1; /* Don't create new file */ 135 1.17 fvdl change_file_times = lutimes; 136 1.17 fvdl get_file_status = lstat; 137 1.17 fvdl } else { 138 1.17 fvdl change_file_times = utimes; 139 1.17 fvdl get_file_status = stat; 140 1.17 fvdl } 141 1.12 enami 142 1.2 glass /* 143 1.2 glass * If no -r or -t flag, at least two operands, the first of which 144 1.2 glass * is an 8 or 10 digit number, use the obsolete time specification. 145 1.2 glass */ 146 1.2 glass if (!timeset && argc > 1) { 147 1.2 glass (void)strtol(argv[0], &p, 10); 148 1.2 glass len = p - argv[0]; 149 1.2 glass if (*p == '\0' && (len == 8 || len == 10)) { 150 1.2 glass timeset = 1; 151 1.9 jtc stime_arg2(*argv++, len == 10, tv); 152 1.2 glass } 153 1.2 glass } 154 1.2 glass 155 1.2 glass /* Otherwise use the current time of day. */ 156 1.2 glass if (!timeset) 157 1.2 glass tv[1] = tv[0]; 158 1.2 glass 159 1.2 glass if (*argv == NULL) 160 1.1 cgd usage(); 161 1.2 glass 162 1.30.2.1 yamt for (rval = EXIT_SUCCESS; *argv; ++argv) { 163 1.2 glass /* See if the file exists. */ 164 1.22 ross if ((*get_file_status)(*argv, &sb)) { 165 1.2 glass if (!cflag) { 166 1.2 glass /* Create the file. */ 167 1.2 glass fd = open(*argv, 168 1.2 glass O_WRONLY | O_CREAT, DEFFILEMODE); 169 1.2 glass if (fd == -1 || fstat(fd, &sb) || close(fd)) { 170 1.30.2.1 yamt rval = EXIT_FAILURE; 171 1.2 glass warn("%s", *argv); 172 1.2 glass continue; 173 1.2 glass } 174 1.2 glass 175 1.2 glass /* If using the current time, we're done. */ 176 1.2 glass if (!timeset) 177 1.2 glass continue; 178 1.2 glass } else 179 1.2 glass continue; 180 1.22 ross } 181 1.2 glass if (!aflag) 182 1.6 mycroft TIMESPEC_TO_TIMEVAL(&tv[0], &sb.st_atimespec); 183 1.2 glass if (!mflag) 184 1.6 mycroft TIMESPEC_TO_TIMEVAL(&tv[1], &sb.st_mtimespec); 185 1.2 glass 186 1.2 glass /* Try utimes(2). */ 187 1.17 fvdl if (!(*change_file_times)(*argv, tv)) 188 1.2 glass continue; 189 1.2 glass 190 1.2 glass /* If the user specified a time, nothing else we can do. */ 191 1.2 glass if (timeset) { 192 1.30.2.1 yamt rval = EXIT_FAILURE; 193 1.2 glass warn("%s", *argv); 194 1.2 glass } 195 1.2 glass 196 1.2 glass /* 197 1.2 glass * System V and POSIX 1003.1 require that a NULL argument 198 1.2 glass * set the access/modification times to the current time. 199 1.2 glass * The permission checks are different, too, in that the 200 1.2 glass * ability to write the file is sufficient. Take a shot. 201 1.2 glass */ 202 1.17 fvdl if (!(*change_file_times)(*argv, NULL)) 203 1.2 glass continue; 204 1.2 glass 205 1.30.2.1 yamt rval = EXIT_FAILURE; 206 1.28 yamt warn("%s", *argv); 207 1.2 glass } 208 1.2 glass exit(rval); 209 1.1 cgd } 210 1.1 cgd 211 1.20 mycroft #define ATOI2(s) ((s) += 2, ((s)[-2] - '0') * 10 + ((s)[-1] - '0')) 212 1.2 glass 213 1.30 joerg static void 214 1.30.2.1 yamt stime_arg0(char *arg, struct timeval *tvp) 215 1.30.2.1 yamt { 216 1.30.2.1 yamt tvp[1].tv_sec = tvp[0].tv_sec = parsedate(arg, NULL, NULL); 217 1.30.2.1 yamt if (tvp[0].tv_sec == -1) 218 1.30.2.1 yamt errx(EXIT_FAILURE, "Could not parse `%s'", arg); 219 1.30.2.1 yamt tvp[0].tv_usec = tvp[1].tv_usec = 0; 220 1.30.2.1 yamt } 221 1.30.2.1 yamt 222 1.30.2.1 yamt static void 223 1.30 joerg stime_arg1(char *arg, struct timeval *tvp) 224 1.1 cgd { 225 1.2 glass struct tm *t; 226 1.10 cgd time_t tmptime; 227 1.2 glass int yearset; 228 1.2 glass char *p; 229 1.2 glass /* Start with the current time. */ 230 1.10 cgd tmptime = tvp[0].tv_sec; 231 1.10 cgd if ((t = localtime(&tmptime)) == NULL) 232 1.30.2.1 yamt err(EXIT_FAILURE, "localtime"); 233 1.2 glass /* [[CC]YY]MMDDhhmm[.SS] */ 234 1.2 glass if ((p = strchr(arg, '.')) == NULL) 235 1.2 glass t->tm_sec = 0; /* Seconds defaults to 0. */ 236 1.2 glass else { 237 1.2 glass if (strlen(p + 1) != 2) 238 1.2 glass goto terr; 239 1.2 glass *p++ = '\0'; 240 1.2 glass t->tm_sec = ATOI2(p); 241 1.2 glass } 242 1.2 glass 243 1.2 glass yearset = 0; 244 1.20 mycroft switch (strlen(arg)) { 245 1.2 glass case 12: /* CCYYMMDDhhmm */ 246 1.20 mycroft t->tm_year = ATOI2(arg) * 100 - TM_YEAR_BASE; 247 1.2 glass yearset = 1; 248 1.25 tsutsui /* FALLTHROUGH */ 249 1.2 glass case 10: /* YYMMDDhhmm */ 250 1.2 glass if (yearset) { 251 1.20 mycroft t->tm_year += ATOI2(arg); 252 1.2 glass } else { 253 1.2 glass yearset = ATOI2(arg); 254 1.2 glass if (yearset < 69) 255 1.20 mycroft t->tm_year = yearset + 2000 - TM_YEAR_BASE; 256 1.2 glass else 257 1.20 mycroft t->tm_year = yearset + 1900 - TM_YEAR_BASE; 258 1.1 cgd } 259 1.2 glass /* FALLTHROUGH */ 260 1.2 glass case 8: /* MMDDhhmm */ 261 1.2 glass t->tm_mon = ATOI2(arg); 262 1.2 glass --t->tm_mon; /* Convert from 01-12 to 00-11 */ 263 1.20 mycroft /* FALLTHROUGH */ 264 1.20 mycroft case 6: 265 1.2 glass t->tm_mday = ATOI2(arg); 266 1.20 mycroft /* FALLTHROUGH */ 267 1.20 mycroft case 4: 268 1.2 glass t->tm_hour = ATOI2(arg); 269 1.20 mycroft /* FALLTHROUGH */ 270 1.20 mycroft case 2: 271 1.2 glass t->tm_min = ATOI2(arg); 272 1.2 glass break; 273 1.2 glass default: 274 1.2 glass goto terr; 275 1.1 cgd } 276 1.2 glass 277 1.2 glass t->tm_isdst = -1; /* Figure out DST. */ 278 1.2 glass tvp[0].tv_sec = tvp[1].tv_sec = mktime(t); 279 1.2 glass if (tvp[0].tv_sec == -1) 280 1.30.2.1 yamt terr: errx(EXIT_FAILURE, 281 1.2 glass "out of range or illegal time specification: [[CC]YY]MMDDhhmm[.SS]"); 282 1.2 glass 283 1.2 glass tvp[0].tv_usec = tvp[1].tv_usec = 0; 284 1.2 glass } 285 1.2 glass 286 1.30 joerg static void 287 1.30 joerg stime_arg2(char *arg, int year, struct timeval *tvp) 288 1.2 glass { 289 1.2 glass struct tm *t; 290 1.10 cgd time_t tmptime; 291 1.2 glass /* Start with the current time. */ 292 1.10 cgd tmptime = tvp[0].tv_sec; 293 1.10 cgd if ((t = localtime(&tmptime)) == NULL) 294 1.30.2.1 yamt err(EXIT_FAILURE, "localtime"); 295 1.2 glass 296 1.2 glass t->tm_mon = ATOI2(arg); /* MMDDhhmm[yy] */ 297 1.2 glass --t->tm_mon; /* Convert from 01-12 to 00-11 */ 298 1.2 glass t->tm_mday = ATOI2(arg); 299 1.2 glass t->tm_hour = ATOI2(arg); 300 1.2 glass t->tm_min = ATOI2(arg); 301 1.21 mycroft if (year) { 302 1.21 mycroft year = ATOI2(arg); 303 1.21 mycroft if (year < 69) 304 1.21 mycroft t->tm_year = year + 2000 - TM_YEAR_BASE; 305 1.21 mycroft else 306 1.21 mycroft t->tm_year = year + 1900 - TM_YEAR_BASE; 307 1.21 mycroft } 308 1.23 mycroft t->tm_sec = 0; 309 1.2 glass 310 1.2 glass t->tm_isdst = -1; /* Figure out DST. */ 311 1.2 glass tvp[0].tv_sec = tvp[1].tv_sec = mktime(t); 312 1.2 glass if (tvp[0].tv_sec == -1) 313 1.30.2.1 yamt errx(EXIT_FAILURE, 314 1.2 glass "out of range or illegal time specification: MMDDhhmm[yy]"); 315 1.2 glass 316 1.2 glass tvp[0].tv_usec = tvp[1].tv_usec = 0; 317 1.2 glass } 318 1.2 glass 319 1.30 joerg static void 320 1.30 joerg stime_file(char *fname, struct timeval *tvp) 321 1.2 glass { 322 1.2 glass struct stat sb; 323 1.2 glass 324 1.2 glass if (stat(fname, &sb)) 325 1.2 glass err(1, "%s", fname); 326 1.14 mycroft TIMESPEC_TO_TIMEVAL(&tvp[0], &sb.st_atimespec); 327 1.14 mycroft TIMESPEC_TO_TIMEVAL(&tvp[1], &sb.st_mtimespec); 328 1.1 cgd } 329 1.1 cgd 330 1.30 joerg static void 331 1.30 joerg usage(void) 332 1.1 cgd { 333 1.2 glass (void)fprintf(stderr, 334 1.30.2.1 yamt "Usage: %s [-acfhm] [-d|--date datetime] [-r|--reference file] [-t time] file ...\n", 335 1.30.2.1 yamt getprogname()); 336 1.30.2.1 yamt exit(EXIT_FAILURE); 337 1.1 cgd } 338
Indexes created Fri Oct 03 02:09:57 GMT 2025