Merge "Add the touch command to toolbox."
diff --git a/toolbox/Android.mk b/toolbox/Android.mk
index ff01172..76542a6 100644
--- a/toolbox/Android.mk
+++ b/toolbox/Android.mk
@@ -54,6 +54,7 @@
vmstat \
nandread \
ionice \
+ touch \
lsof
LOCAL_SRC_FILES:= \
diff --git a/toolbox/touch.c b/toolbox/touch.c
new file mode 100644
index 0000000..b8ab310
--- /dev/null
+++ b/toolbox/touch.c
@@ -0,0 +1,87 @@
+#include <stdio.h>
+#include <string.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <stdlib.h>
+#include <fcntl.h>
+
+static void usage(void)
+{
+ fprintf(stderr, "touch: usage: touch [-alm] [-t time_t] <file>\n");
+ exit(1);
+}
+
+int touch_main(int argc, char *argv[])
+{
+ int i, fd, aflag = 0, mflag = 0, debug = 0, flags = 0;
+ struct timespec specified_time, times[2];
+ char *file = 0;
+
+ specified_time.tv_nsec = UTIME_NOW;
+
+ for (i = 1; i < argc; i++) {
+ if (argv[i][0] == '-') {
+ /* an option */
+ const char *arg = argv[i]+1;
+ while (arg[0]) {
+ switch (arg[0]) {
+ case 'a': aflag = 1; break;
+ case 'm': mflag = 1; break;
+ case 't':
+ if ((i+1) >= argc)
+ usage();
+ specified_time.tv_sec = atol(argv[++i]);
+ if (specified_time.tv_sec == 0) {
+ fprintf(stderr, "touch: invalid time_t\n");
+ exit(1);
+ }
+ specified_time.tv_nsec = 0;
+ break;
+ case 'l': flags |= AT_SYMLINK_NOFOLLOW; break;
+ case 'd': debug = 1; break;
+ default:
+ usage();
+ }
+ arg++;
+ }
+ } else {
+ /* not an option, and only accept one filename */
+ if (i+1 != argc)
+ usage();
+ file = argv[i];
+ }
+ }
+
+ if (! file) {
+ fprintf(stderr, "touch: no file specified\n");
+ exit(1);
+ }
+
+ if (access(file, F_OK))
+ if ((fd=creat(file, 0666)) != -1)
+ close(fd);
+
+ if ((mflag == 0) && (aflag == 0))
+ aflag = mflag = 1;
+
+ if (aflag)
+ times[0] = specified_time;
+ else
+ times[0].tv_nsec = UTIME_OMIT;
+
+ if (mflag)
+ times[1] = specified_time;
+ else
+ times[1].tv_nsec = UTIME_OMIT;
+
+ if (debug) {
+ fprintf(stderr, "file = %s\n", file);
+ fprintf(stderr, "times[0].tv_sec = %ld, times[0].tv_nsec = %ld\n", times[0].tv_sec, times[0].tv_nsec);
+ fprintf(stderr, "times[1].tv_sec = %ld, times[1].tv_nsec = %ld\n", times[1].tv_sec, times[1].tv_nsec);
+ fprintf(stderr, "flags = 0x%8.8x\n", flags);
+ }
+
+ return utimensat(AT_FDCWD, file, times, flags);
+}
+