touch: support -r REF_FILE if ENABLE_DESKTOP (needed for blackfin compile)
function old new delta
touch_main 136 221 +85
diff --git a/coreutils/touch.c b/coreutils/touch.c
index 0b58179..78ae4a5 100644
--- a/coreutils/touch.c
+++ b/coreutils/touch.c
@@ -21,24 +21,55 @@
/* This is a NOFORK applet. Be very careful! */
+/* coreutils implements:
+ * -a change only the access time
+ * -c, --no-create
+ * do not create any files
+ * -d, --date=STRING
+ * parse STRING and use it instead of current time
+ * -f (ignored, BSD compat)
+ * -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
+ * --time=WORD
+ * change the specified time: WORD is access, atime, or use
+ */
+
int touch_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int touch_main(int argc ATTRIBUTE_UNUSED, char **argv)
{
+#if ENABLE_DESKTOP
+ struct utimbuf timebuf;
+ char *reference_file = NULL;
+#else
+#define reference_file NULL
+#define timebuf (*(struct utimbuf*)NULL)
+#endif
int fd;
int status = EXIT_SUCCESS;
- int flags = getopt32(argv, "cf");
+ int flags = getopt32(argv, "c" USE_DESKTOP("r:")
+ /*ignored:*/ "fma"
+ USE_DESKTOP(, &reference_file));
- flags &= 1; /* ignoring -f (BSD compat thingy) */
+ flags &= 1; /* only -c bit is left */
argv += optind;
-
if (!*argv) {
bb_show_usage();
}
+ if (reference_file) {
+ struct stat stbuf;
+ xstat(reference_file, &stbuf);
+ timebuf.actime = stbuf.st_atime;
+ timebuf.modtime = stbuf.st_mtime;
+ }
+
do {
- if (utime(*argv, NULL)) {
- if (errno == ENOENT) { /* no such file */
- if (flags) { /* Creation is disabled, so ignore. */
+ if (utime(*argv, reference_file ? &timebuf : NULL)) {
+ if (errno == ENOENT) { /* no such file */
+ if (flags) { /* creation is disabled, so ignore */
continue;
}
/* Try to create the file. */
@@ -46,6 +77,8 @@
S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH
);
if ((fd >= 0) && !close(fd)) {
+ if (reference_file)
+ utime(*argv, &timebuf);
continue;
}
}