*
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
*
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
/* BB_AUDIT SUSv3 _NOT_ compliant -- options -a, -m, -r, -t not supported. */
#include "libbb.h"
+//config:config TOUCH
+//config: bool "touch"
+//config: default y
+//config: help
+//config: touch is used to create or change the access and/or
+//config: modification timestamp of specified files.
+
+//applet:IF_TOUCH(APPLET_NOFORK(touch, touch, BB_DIR_BIN, BB_SUID_DROP, touch))
+
+//kbuild:lib-$(CONFIG_TOUCH) += touch.o
+
+//usage:#define touch_trivial_usage
+//usage: "[-c]" IF_DESKTOP(" [-d DATE] [-r FILE]") " FILE [FILE]..."
+//usage:#define touch_full_usage "\n\n"
+//usage: "Update the last-modified date on the given FILE[s]\n"
+//usage: "\n -c Don't create files"
+//usage: IF_DESKTOP(
+//usage: "\n -d DT Date/time to use"
+//usage: "\n -r FILE Use FILE's date/time"
+//usage: )
+//usage:
+//usage:#define touch_example_usage
+//usage: "$ ls -l /tmp/foo\n"
+//usage: "/bin/ls: /tmp/foo: No such file or directory\n"
+//usage: "$ touch /tmp/foo\n"
+//usage: "$ ls -l /tmp/foo\n"
+//usage: "-rw-rw-r-- 1 andersen andersen 0 Apr 15 01:11 /tmp/foo\n"
+
/* This is a NOFORK applet. Be very careful! */
/* coreutils implements:
#else
# define reference_file NULL
# define date_str NULL
-# define timebuf (*(struct timeval*)NULL)
+# define timebuf ((struct timeval*)NULL)
#endif
#if ENABLE_DESKTOP && ENABLE_LONG_OPTS
struct tm tm_time;
time_t t;
- //time(&t);
- //localtime_r(&t, &tm_time);
- memset(&tm_time, 0, sizeof(tm_time));
+ //memset(&tm_time, 0, sizeof(tm_time));
+ /* Better than memset: makes "HH:MM" dates meaningful */
+ time(&t);
+ localtime_r(&t, &tm_time);
parse_datestr(date_str, &tm_time);
/* Correct any day of week and day of year etc. fields */
- tm_time.tm_isdst = -1; /* Be sure to recheck dst */
+ tm_time.tm_isdst = -1; /* Be sure to recheck dst */
t = validate_tm_time(date_str, &tm_time);
timebuf[1].tv_sec = timebuf[0].tv_sec = t;
}
do {
- if (utimes(*argv, reference_file ? timebuf : NULL)) {
+ if (utimes(*argv, (reference_file || date_str) ? timebuf : NULL) != 0) {
if (errno == ENOENT) { /* no such file */
if (opts) { /* creation is disabled, so ignore */
continue;
}
- /* Try to create the file. */
- fd = open(*argv, O_RDWR | O_CREAT,
- S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH
- );
- if ((fd >= 0) && !close(fd)) {
- if (reference_file)
+ /* Try to create the file */
+ fd = open(*argv, O_RDWR | O_CREAT, 0666);
+ if (fd >= 0) {
+ xclose(fd);
+ if (reference_file || date_str)
utimes(*argv, timebuf);
continue;
}