#include <sys/cdefs.h>
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1993\n\
The Regents of the University of California. All rights reserved.\n");
#endif
#ifndef lint
#if 0
static char sccsid[] = "@(#)touch.c 8.2 (Berkeley) 4/28/95";
#endif
__RCSID("$NetBSD: touch.c,v 1.22 1998/08/25 20:59:42 ross Exp $");
#endif
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <locale.h>
#include <time.h>
#include <tzfile.h>
#include <unistd.h>
int main __P((int, char **));
int rw __P((char *, struct stat *, int));
void stime_arg1 __P((char *, struct timeval *));
void stime_arg2 __P((char *, int, struct timeval *));
void stime_file __P((char *, struct timeval *));
void usage __P((void));
int
main(argc, argv)
int argc;
char *argv[];
{
struct stat sb;
struct timeval tv[2];
int aflag, cflag, fflag, hflag, mflag, ch, fd, len, rval, timeset;
char *p;
int (*change_file_times) __P((const char *, const struct timeval *));
int (*get_file_status) __P((const char *, struct stat *));
setlocale(LC_ALL, "");
aflag = cflag = fflag = hflag = mflag = timeset = 0;
if (gettimeofday(&tv[0], NULL))
err(1, "gettimeofday");
while ((ch = getopt(argc, argv, "acfhmr:t:")) != -1)
switch(ch) {
case 'a':
aflag = 1;
break;
case 'c':
cflag = 1;
break;
case 'f':
fflag = 1;
break;
#ifndef __APPLE__
case 'h':
hflag = 1;
break;
#endif
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;
if (aflag == 0 && mflag == 0)
aflag = mflag = 1;
#ifndef __APPLE__
if (hflag) {
cflag = 1;
change_file_times = lutimes;
get_file_status = lstat;
} else {
#endif
change_file_times = utimes;
get_file_status = stat;
#ifndef __APPLE__
}
#endif
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++, len == 10, tv);
}
}
if (!timeset)
tv[1] = tv[0];
if (*argv == NULL)
usage();
for (rval = 0; *argv; ++argv) {
if ((*get_file_status)(*argv, &sb)) {
if (!cflag) {
fd = open(*argv,
O_WRONLY | O_CREAT, DEFFILEMODE);
if (fd == -1 || fstat(fd, &sb) || close(fd)) {
rval = 1;
warn("%s", *argv);
continue;
}
if (!timeset)
continue;
} else
continue;
}
if (!aflag)
TIMESPEC_TO_TIMEVAL(&tv[0], &sb.st_atimespec);
if (!mflag)
TIMESPEC_TO_TIMEVAL(&tv[1], &sb.st_mtimespec);
if (!(*change_file_times)(*argv, tv))
continue;
if (timeset) {
rval = 1;
warn("%s", *argv);
}
if (!(*change_file_times)(*argv, NULL))
continue;
if (!S_ISLNK(sb.st_mode) && rw(*argv, &sb, fflag))
rval = 1;
}
exit(rval);
}
#define ATOI2(s) ((s) += 2, ((s)[-2] - '0') * 10 + ((s)[-1] - '0'))
void
stime_arg1(arg, tvp)
char *arg;
struct timeval *tvp;
{
struct tm *t;
time_t tmptime;
int yearset;
char *p;
tmptime = tvp[0].tv_sec;
if ((t = localtime(&tmptime)) == NULL)
err(1, "localtime");
if ((p = strchr(arg, '.')) == NULL)
t->tm_sec = 0;
else {
if (strlen(p + 1) != 2)
goto terr;
*p++ = '\0';
t->tm_sec = ATOI2(p);
}
yearset = 0;
switch (strlen(arg)) {
case 12:
t->tm_year = ATOI2(arg) * 100 - TM_YEAR_BASE;
yearset = 1;
case 10:
if (yearset) {
t->tm_year += ATOI2(arg);
} else {
yearset = ATOI2(arg);
if (yearset < 69)
t->tm_year = yearset + 2000 - TM_YEAR_BASE;
else
t->tm_year = yearset + 1900 - TM_YEAR_BASE;
}
case 8:
t->tm_mon = ATOI2(arg);
--t->tm_mon;
case 6:
t->tm_mday = ATOI2(arg);
case 4:
t->tm_hour = ATOI2(arg);
case 2:
t->tm_min = ATOI2(arg);
break;
default:
goto terr;
}
t->tm_isdst = -1;
tvp[0].tv_sec = tvp[1].tv_sec = mktime(t);
if (tvp[0].tv_sec == -1)
terr: errx(1,
"out of range or illegal time specification: [[CC]YY]MMDDhhmm[.SS]");
tvp[0].tv_usec = tvp[1].tv_usec = 0;
}
void
stime_arg2(arg, year, tvp)
char *arg;
int year;
struct timeval *tvp;
{
struct tm *t;
time_t tmptime;
tmptime = tvp[0].tv_sec;
if ((t = localtime(&tmptime)) == NULL)
err(1, "localtime");
t->tm_mon = ATOI2(arg);
--t->tm_mon;
t->tm_mday = ATOI2(arg);
t->tm_hour = ATOI2(arg);
t->tm_min = ATOI2(arg);
if (year) {
year = ATOI2(arg);
if (year < 69)
t->tm_year = year + 2000 - TM_YEAR_BASE;
else
t->tm_year = year + 1900 - TM_YEAR_BASE;
}
t->tm_isdst = -1;
tvp[0].tv_sec = tvp[1].tv_sec = mktime(t);
if (tvp[0].tv_sec == -1)
errx(1,
"out of range or illegal time specification: MMDDhhmm[yy]");
tvp[0].tv_usec = tvp[1].tv_usec = 0;
}
void
stime_file(fname, tvp)
char *fname;
struct timeval *tvp;
{
struct stat sb;
if (stat(fname, &sb))
err(1, "%s", fname);
TIMESPEC_TO_TIMEVAL(&tvp[0], &sb.st_atimespec);
TIMESPEC_TO_TIMEVAL(&tvp[1], &sb.st_mtimespec);
}
int
rw(fname, sbp, force)
char *fname;
struct stat *sbp;
int force;
{
int fd, needed_chmod, rval;
u_char byte;
if (!S_ISREG(sbp->st_mode) && !S_ISDIR(sbp->st_mode)) {
warnx("%s: %s", fname, strerror(EFTYPE));
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)) {
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
usage()
{
#ifndef __APPLE__
(void)fprintf(stderr,
"usage: touch [-acfhm] [-r file] [-t time] file ...\n");
#else
(void)fprintf(stderr,
"usage: touch [-acfm] [-r file] [-t time] file ...\n");
#endif
exit(1);
}