Force Nagle algorithm off for loopback
[reactos.git] / rosapps / cmdutils / touch / touch.c
1 /*
2 * Copyright (c) 1993 Regents of the University of California.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * 7/20/97 - Ted Felix <tfelix@fred.net>
34 * Ported to Win32 from bsd4.3-reno at wuarchive.
35 * Biggest problems were err() routines, utines, and
36 * gettimeofday(). All easily fixed.
37 */
38
39 #ifndef lint
40 char copyright[] =
41 "@(#) Copyright (c) 1993 Regents of the University of California.\n\
42 All rights reserved.\n";
43 #endif /* not lint */
44
45 #include <sys/types.h>
46 #include <sys/stat.h>
47 #include <sys/time.h>
48
49 //#ifdef __STDC__
50 //#error "__STDC__ defined"
51 //#endif
52
53 #include <sys/utime.h>
54 #include <io.h>
55 #include <fcntl.h>
56 #include <getopt.h>
57 #include <various.h>
58 #define DEFFILEMODE S_IWRITE
59
60 #include <err.h>
61 #include <errno.h>
62 #include <stdio.h>
63 #include <stdlib.h>
64 #include <string.h>
65 #include <time.h>
66 #include <unistd.h>
67
68 char *__progname; /* Program name, from crt0. */
69
70 /* Prototypes */
71 int rw __P((char *, struct stat *, int));
72 void stime_arg1 __P((char *, time_t *));
73 void stime_arg2 __P((char *, int, time_t *));
74 void stime_file __P((char *, time_t *));
75 void usage __P((void));
76
77 int
78 main(int argc, char *argv[])
79 {
80 struct stat sb;
81 time_t tv[2];
82 int aflag, cflag, fflag, mflag, ch, fd, len, rval, timeset;
83 char *p;
84 struct utimbuf utb;
85
86 __progname = argv[0];
87
88 aflag = cflag = fflag = mflag = timeset = 0;
89 time(&tv[0]);
90
91 while ((ch = getopt(argc, argv, "acfmr:t:")) != EOF)
92 switch(ch) {
93 case 'a':
94 aflag = 1;
95 break;
96 case 'c':
97 cflag = 1;
98 break;
99 case 'f':
100 fflag = 1;
101 break;
102 case 'm':
103 mflag = 1;
104 break;
105 case 'r':
106 timeset = 1;
107 stime_file(optarg, tv);
108 break;
109 case 't':
110 timeset = 1;
111 stime_arg1(optarg, tv);
112 break;
113 case '?':
114 default:
115 usage();
116 }
117 argc -= optind;
118 argv += optind;
119
120 /* Default is both -a and -m. */
121 if (aflag == 0 && mflag == 0)
122 aflag = mflag = 1;
123
124 /*
125 * If no -r or -t flag, at least two operands, the first of which
126 * is an 8 or 10 digit number, use the obsolete time specification.
127 */
128 if (!timeset && argc > 1) {
129 (void)strtol(argv[0], &p, 10);
130 len = p - argv[0];
131 if (*p == '\0' && (len == 8 || len == 10)) {
132 timeset = 1;
133 stime_arg2(argv[0], len == 10, tv);
134 }
135 }
136
137 /* Otherwise use the current time of day. */
138 if (!timeset)
139 tv[1] = tv[0];
140
141 if (*argv == NULL)
142 usage();
143
144 for (rval = 0; *argv; ++argv) {
145 /* See if the file exists. */
146 if (stat(*argv, &sb)) {
147 if (!cflag) {
148 /* Create the file. */
149 fd = open(*argv,
150 O_WRONLY | O_CREAT, DEFFILEMODE);
151 if (fd == -1 || fstat(fd, &sb) || close(fd)) {
152 rval = 1;
153 warn("%s", *argv);
154 continue;
155 }
156
157 /* If using the current time, we're done. */
158 if (!timeset)
159 continue;
160 } else
161 continue;
162 }
163
164 if (!aflag)
165 tv[0] = sb.st_atime;
166 if (!mflag)
167 tv[1] = sb.st_mtime;
168
169 /* Try utime. */
170 utb.actime = tv[0];
171 utb.modtime = tv[1];
172 if (!utime(*argv, &utb))
173 continue;
174
175 /* If the user specified a time, nothing else we can do. */
176 if (timeset) {
177 rval = 1;
178 warn("%s", *argv);
179 }
180
181 /*
182 * System V and POSIX 1003.1 require that a NULL argument
183 * set the access/modification times to the current time.
184 * The permission checks are different, too, in that the
185 * ability to write the file is sufficient. Take a shot.
186 */
187 if (!utime(*argv, NULL))
188 continue;
189
190 /* Try reading/writing. */
191 if (rw(*argv, &sb, fflag))
192 rval = 1;
193 }
194 return rval;
195 }
196
197 #define ATOI2(ar) ((ar)[0] - '0') * 10 + ((ar)[1] - '0'); (ar) += 2;
198
199 void
200 stime_arg1(char *arg, time_t *tvp)
201 {
202 struct tm *t;
203 int yearset;
204 char *p;
205 /* Start with the current time. */
206 if ((t = localtime(&tvp[0])) == NULL)
207 err(1, "localtime");
208 /* [[CC]YY]MMDDhhmm[.SS] */
209 if ((p = strchr(arg, '.')) == NULL)
210 t->tm_sec = 0; /* Seconds defaults to 0. */
211 else {
212 if (strlen(p + 1) != 2)
213 goto terr;
214 *p++ = '\0';
215 t->tm_sec = ATOI2(p);
216 }
217
218 yearset = 0;
219 switch(strlen(arg)) {
220 case 12: /* CCYYMMDDhhmm */
221 t->tm_year = ATOI2(arg);
222 t->tm_year *= 1000;
223 yearset = 1;
224 /* FALLTHOUGH */
225 case 10: /* YYMMDDhhmm */
226 if (yearset) {
227 yearset = ATOI2(arg);
228 t->tm_year += yearset;
229 } else {
230 yearset = ATOI2(arg);
231 if (yearset < 69)
232 t->tm_year = yearset + 2000;
233 else
234 t->tm_year = yearset + 1900;
235 }
236 t->tm_year -= 1900; /* Convert to UNIX time. */
237 /* FALLTHROUGH */
238 case 8: /* MMDDhhmm */
239 t->tm_mon = ATOI2(arg);
240 --t->tm_mon; /* Convert from 01-12 to 00-11 */
241 t->tm_mday = ATOI2(arg);
242 t->tm_hour = ATOI2(arg);
243 t->tm_min = ATOI2(arg);
244 break;
245 default:
246 goto terr;
247 }
248
249 t->tm_isdst = -1; /* Figure out DST. */
250 tvp[0] = tvp[1] = mktime(t);
251 if (tvp[0] == -1)
252 terr: errx(1,
253 "out of range or illegal time specification: [[CC]YY]MMDDhhmm[.SS]");
254 }
255
256 void
257 stime_arg2(char *arg, int year, time_t *tvp)
258 {
259 struct tm *t;
260 /* Start with the current time. */
261 if ((t = localtime(&tvp[0])) == NULL)
262 err(1, "localtime");
263
264 t->tm_mon = ATOI2(arg); /* MMDDhhmm[yy] */
265 --t->tm_mon; /* Convert from 01-12 to 00-11 */
266 t->tm_mday = ATOI2(arg);
267 t->tm_hour = ATOI2(arg);
268 t->tm_min = ATOI2(arg);
269 if (year)
270 t->tm_year = ATOI2(arg);
271
272 t->tm_isdst = -1; /* Figure out DST. */
273 tvp[0] = tvp[1] = mktime(t);
274 if (tvp[0] == -1)
275 errx(1,
276 "out of range or illegal time specification: MMDDhhmm[yy]");
277 }
278
279 void
280 stime_file(char *fname, time_t *tvp)
281 {
282 struct stat sb;
283
284 if (stat(fname, &sb))
285 err(1, "%s", fname);
286 tvp[0] = sb.st_atime;
287 tvp[1] = sb.st_mtime;
288 }
289
290 int
291 rw(char *fname, struct stat *sbp, int force)
292 {
293 int fd, needed_chmod, rval;
294 u_char byte;
295
296 /* Try regular files and directories. */
297 if (!S_ISREG(sbp->st_mode) && !S_ISDIR(sbp->st_mode)) {
298 warnx("%s: %s", fname, strerror(0));
299 return (1);
300 }
301
302 needed_chmod = rval = 0;
303 if ((fd = open(fname, O_RDWR, 0)) == -1) {
304 if (!force || chmod(fname, DEFFILEMODE))
305 goto err;
306 if ((fd = open(fname, O_RDWR, 0)) == -1)
307 goto err;
308 needed_chmod = 1;
309 }
310
311 if (sbp->st_size != 0) {
312 if (read(fd, &byte, sizeof(byte)) != sizeof(byte))
313 goto err;
314 if (lseek(fd, (off_t)0, SEEK_SET) == -1)
315 goto err;
316 if (write(fd, &byte, sizeof(byte)) != sizeof(byte))
317 goto err;
318 } else {
319 if (write(fd, &byte, sizeof(byte)) != sizeof(byte)) {
320 err: rval = 1;
321 warn("%s", fname);
322 /* } else if (ftruncate(fd, (off_t)0)) {*/
323 } else if (chsize(fd, (off_t)0)) {
324 rval = 1;
325 warn("%s: file modified", fname);
326 }
327 }
328
329 if (close(fd) && rval != 1) {
330 rval = 1;
331 warn("%s", fname);
332 }
333 if (needed_chmod && chmod(fname, sbp->st_mode) && rval != 1) {
334 rval = 1;
335 warn("%s: permissions modified", fname);
336 }
337 return (rval);
338 }
339
340 /*__dead void*/
341 void
342 usage()
343 {
344 (void)fprintf(stderr,
345 "usage: touch [-acfm] [-r file] [-t time] file ...\n");
346 exit(1);
347 }