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/* vi: set sw=4 ts=4:
*
* touch.c : change timestamp of a file
* Copyright 2012 Choubey Ji <warior.linux@gmail.com>
*
* See http://pubs.opengroup.org/onlinepubs/9699919799/utilities/touch.html
USE_TOUCH(NEWTOY(touch, "mr:t:", TOYFLAG_BIN))
config TOUCH
bool "th"
default y
help
Usage: Usage: touch [OPTION]... FILE...
Update the access and modification times of each FILE to the current time.
-m change only the modification time
-r, --reference=FILE use this file's times instead of current time
-t STAMP use [[CC]YY]MMDDhhmm[.ss] instead of current time
*/
#define FOR_touch
#include "toys.h"
GLOBALS(
char *date;
char *file;
)
void touch_main(void)
{
int fd;
time_t now;
struct utimbuf modinfo;
struct stat st;
if (TT.date) {
struct tm *tm = getdate(TT.date);
if (!tm) perror_exit("bad date '%s'", TT.date);
now = mktime(tm);
} else time(&now);
modinfo.modtime = now;
modinfo.actime = now;
if (TT.file) {
xstat(TT.file, &st);
modinfo.modtime = st.st_mtime;
modinfo.actime = st.st_atime;
}
if (toys.optflags & FLAG_m) {
if(stat(toys.optargs[toys.optc - 1], &st) < 0) {
toys.exitval = EXIT_FAILURE;
return;
}
modinfo.actime = st.st_atime;
if(!(toys.optflags & (FLAG_r|FLAG_t))) {
time(&now);
modinfo.modtime = now;
}
}
if (utime(toys.optargs[toys.optc - 1], &modinfo) == -1) {
if ((fd = open(toys.optargs[toys.optc - 1],O_CREAT |O_RDWR, 0644)) != -1) {
close(fd);
utime(toys.optargs[toys.optc - 1], &modinfo);
} else {
perror_msg("can't create '%s'", toys.optargs[toys.optc-1]);
toys.exitval = EXIT_FAILURE;
}
}
}
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