reactos/modules/rosapps/applications/cmdutils/touch/touch.c

348 lines
8.2 KiB
C

/*
* Copyright (c) 1993 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* 7/20/97 - Ted Felix <tfelix@fred.net>
* Ported to Win32 from bsd4.3-reno at wuarchive.
* Biggest problems were err() routines, utines, and
* gettimeofday(). All easily fixed.
*/
#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1993 Regents of the University of California.\n\
All rights reserved.\n";
#endif /* not lint */
#include <sys/types.h>
#include <sys/stat.h>
#include <time.h>
//#ifdef __STDC__
//#error "__STDC__ defined"
//#endif
#include <sys/utime.h>
#include <io.h>
#include <fcntl.h>
#include <getopt.h>
#include <various.h>
#define DEFFILEMODE S_IWRITE
#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
char *__progname; /* Program name, from crt0. */
/* Prototypes */
int rw __P((char *, struct stat *, int));
void stime_arg1 __P((char *, time_t *));
void stime_arg2 __P((char *, int, time_t *));
void stime_file __P((char *, time_t *));
void usage __P((void));
int
main(int argc, char *argv[])
{
struct stat sb;
time_t tv[2];
int aflag, cflag, fflag, mflag, ch, fd, len, rval, timeset;
char *p;
struct utimbuf utb;
__progname = argv[0];
aflag = cflag = fflag = mflag = timeset = 0;
time(&tv[0]);
while ((ch = getopt(argc, argv, "acfmr:t:")) != EOF)
switch(ch) {
case 'a':
aflag = 1;
break;
case 'c':
cflag = 1;
break;
case 'f':
fflag = 1;
break;
case 'm':
mflag = 1;
break;
case 'r':
timeset = 1;
stime_file(optarg, tv);
break;
case 't':
timeset = 1;
stime_arg1(optarg, tv);
break;
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
/* Default is both -a and -m. */
if (aflag == 0 && mflag == 0)
aflag = mflag = 1;
/*
* If no -r or -t flag, at least two operands, the first of which
* is an 8 or 10 digit number, use the obsolete time specification.
*/
if (!timeset && argc > 1) {
(void)strtol(argv[0], &p, 10);
len = p - argv[0];
if (*p == '\0' && (len == 8 || len == 10)) {
timeset = 1;
stime_arg2(argv[0], len == 10, tv);
}
}
/* Otherwise use the current time of day. */
if (!timeset)
tv[1] = tv[0];
if (*argv == NULL)
usage();
for (rval = 0; *argv; ++argv) {
/* See if the file exists. */
if (stat(*argv, &sb)) {
if (!cflag) {
/* Create the file. */
fd = _open(*argv,
O_WRONLY | O_CREAT, DEFFILEMODE);
if (fd == -1 || fstat(fd, &sb) || _close(fd)) {
rval = 1;
warn("%s", *argv);
continue;
}
/* If using the current time, we're done. */
if (!timeset)
continue;
} else
continue;
}
if (!aflag)
tv[0] = sb.st_atime;
if (!mflag)
tv[1] = sb.st_mtime;
/* Try utime. */
utb.actime = tv[0];
utb.modtime = tv[1];
if (!utime(*argv, &utb))
continue;
/* If the user specified a time, nothing else we can do. */
if (timeset) {
rval = 1;
warn("%s", *argv);
}
/*
* System V and POSIX 1003.1 require that a NULL argument
* set the access/modification times to the current time.
* The permission checks are different, too, in that the
* ability to write the file is sufficient. Take a shot.
*/
if (!utime(*argv, NULL))
continue;
/* Try reading/writing. */
if (rw(*argv, &sb, fflag))
rval = 1;
}
return rval;
}
#define ATOI2(ar) ((ar)[0] - '0') * 10 + ((ar)[1] - '0'); (ar) += 2;
void
stime_arg1(char *arg, time_t *tvp)
{
struct tm *t;
int yearset;
char *p;
/* Start with the current time. */
if ((t = localtime(&tvp[0])) == NULL)
err(1, "localtime");
/* [[CC]YY]MMDDhhmm[.SS] */
if ((p = strchr(arg, '.')) == NULL)
t->tm_sec = 0; /* Seconds defaults to 0. */
else {
if (strlen(p + 1) != 2)
goto terr;
*p++ = '\0';
t->tm_sec = ATOI2(p);
}
yearset = 0;
switch(strlen(arg)) {
case 12: /* CCYYMMDDhhmm */
t->tm_year = ATOI2(arg);
t->tm_year *= 1000;
yearset = 1;
/* FALLTHOUGH */
case 10: /* YYMMDDhhmm */
if (yearset) {
yearset = ATOI2(arg);
t->tm_year += yearset;
} else {
yearset = ATOI2(arg);
if (yearset < 69)
t->tm_year = yearset + 2000;
else
t->tm_year = yearset + 1900;
}
t->tm_year -= 1900; /* Convert to UNIX time. */
/* FALLTHROUGH */
case 8: /* MMDDhhmm */
t->tm_mon = ATOI2(arg);
--t->tm_mon; /* Convert from 01-12 to 00-11 */
t->tm_mday = ATOI2(arg);
t->tm_hour = ATOI2(arg);
t->tm_min = ATOI2(arg);
break;
default:
goto terr;
}
t->tm_isdst = -1; /* Figure out DST. */
tvp[0] = tvp[1] = mktime(t);
if (tvp[0] == -1)
terr: errx(1,
"out of range or illegal time specification: [[CC]YY]MMDDhhmm[.SS]");
}
void
stime_arg2(char *arg, int year, time_t *tvp)
{
struct tm *t;
/* Start with the current time. */
if ((t = localtime(&tvp[0])) == NULL)
err(1, "localtime");
t->tm_mon = ATOI2(arg); /* MMDDhhmm[yy] */
--t->tm_mon; /* Convert from 01-12 to 00-11 */
t->tm_mday = ATOI2(arg);
t->tm_hour = ATOI2(arg);
t->tm_min = ATOI2(arg);
if (year)
t->tm_year = ATOI2(arg);
t->tm_isdst = -1; /* Figure out DST. */
tvp[0] = tvp[1] = mktime(t);
if (tvp[0] == -1)
errx(1,
"out of range or illegal time specification: MMDDhhmm[yy]");
}
void
stime_file(char *fname, time_t *tvp)
{
struct stat sb;
if (stat(fname, &sb))
err(1, "%s", fname);
tvp[0] = sb.st_atime;
tvp[1] = sb.st_mtime;
}
int
rw(char *fname, struct stat *sbp, int force)
{
int fd, needed_chmod, rval;
u_char byte;
/* Try regular files and directories. */
if (!S_ISREG(sbp->st_mode) && !S_ISDIR(sbp->st_mode)) {
warnx("%s: %s", fname, strerror(0));
return (1);
}
needed_chmod = rval = 0;
if ((fd = _open(fname, O_RDWR, 0)) == -1) {
if (!force || _chmod(fname, DEFFILEMODE))
goto err;
if ((fd = _open(fname, O_RDWR, 0)) == -1)
goto err;
needed_chmod = 1;
}
if (sbp->st_size != 0) {
if (_read(fd, &byte, sizeof(byte)) != sizeof(byte))
goto err;
if (_lseek(fd, (off_t)0, SEEK_SET) == -1)
goto err;
if (_write(fd, &byte, sizeof(byte)) != sizeof(byte))
goto err;
} else {
if (_write(fd, &byte, sizeof(byte)) != sizeof(byte)) {
err: rval = 1;
warn("%s", fname);
/* } else if (ftruncate(fd, (off_t)0)) {*/
} else if (_chsize(fd, (off_t)0)) {
rval = 1;
warn("%s: file modified", fname);
}
}
if (_close(fd) && rval != 1) {
rval = 1;
warn("%s", fname);
}
if (needed_chmod && _chmod(fname, sbp->st_mode) && rval != 1) {
rval = 1;
warn("%s: permissions modified", fname);
}
return (rval);
}
/*__dead void*/
void
usage()
{
(void)fprintf(stderr,
"usage: touch [-acfm] [-r file] [-t time] file ...\n");
exit(1);
}