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-rw-r--r--toys/posix/touch.c15
1 files changed, 7 insertions, 8 deletions
diff --git a/toys/posix/touch.c b/toys/posix/touch.c
index 71ddc434..298a9365 100644
--- a/toys/posix/touch.c
+++ b/toys/posix/touch.c
@@ -18,7 +18,7 @@ config TOUCH
-m change modification time
-c don't create file
-d set time to DATE (in YYYY-MM-DDThh:mm:SS[.frac][tz] format)
- -t set time to TIME (in [[CC]YY]MMDDhhmm[.ss][frac] format)
+ -t set time to TIME (in [[CC]YY]MMDDhhmm[.ss] format)
-r set time same as reference FILE
*/
@@ -80,10 +80,11 @@ void touch_main(void)
localtime_r(&(tv->tv_sec), &tm);
}
s = strptime(date, "%Y-%m-%dT%T", &tm);
- if (s && *s=='.') {
+ if (s && *s=='.' && isdigit(s[1])) {
sscanf(s, ".%d%n", &i, &len);
s += len;
tv->tv_usec = i;
+ while (len++ < 7) tv->tv_usec *= 10;
}
} else s = 0;
@@ -92,17 +93,15 @@ void touch_main(void)
} else {
strcpy(toybuf, "%Y%m%d%H%M");
date = TT.time;
+ i = ((s = strchr(date, '.'))) ? s-date : strlen(date);
+ if (i < 8 || i%2) error_exit("bad '%s'", date);
for (i=0;i<3;i++) {
s = strptime(date, toybuf+(i&2), &tm);
if (s) break;
toybuf[1]='y';
}
- if (s && *s=='.') {
- int count = sscanf(s, ".%2d%u%n", &(tm.tm_sec), &i, &len);
-
- if (count==2) tv->tv_usec = i;
+ if (s && *s=='.' && sscanf(s, ".%2u%n", &(tm.tm_sec), &len) == 1)
s += len;
- }
}
errno = 0;
@@ -125,7 +124,7 @@ void touch_main(void)
if ((flag == (FLAG_m|FLAG_a) || !fetch(*ss, tv, flag)) && !utimes(*ss, tv))
ss++;
else if (toys.optflags & FLAG_c) ss++;
- else if (-1 != (fd = open(*ss, O_CREAT, 0666))) close(fd);
+ else if (access(*ss, F_OK) && (-1 != (fd = open(*ss, O_CREAT, 0666)))) close(fd);
else perror_msg("'%s'", *ss++);
}
}