Although iso-8601 specifies years as 4 digits, it allows
them to be wider.
The current POSIX year width is limited by 'int tm_year'
at 10 digits plus a negative sign.
That, and the possibility of nanosecond time makes the
widest POSIX iso-8601 time 41 characters. Plus the \0
string terminator yields a buffer size of 42.
Before truncated output:
/sbin/hwclock --utc --noadjfile --predict --date '-2147483765 years'
-2147481748-09-25 20:29:45.0000
Patched:
./hwclock --utc --noadjfile --predict --date '-2147483765 years'
-2147481748-09-25 20:17:21.000000-0456
./hwclock --utc --noadjfile --predict --date '-2147483766 years'
hwclock: invalid date '-2147483766 years'
Comparable to coreutils 'date' command:
date -Ins --date '-2147483765 years'
-2147481748-09-25T19:49:31,578899297-0456
date -Ins --date '-2147483766 years'
date: invalid date '-2147483766 years'
The 'date' output illustrates the full 41 character POSIX iso-8601
Signed-off-by: J William Piggott <elseifthen@xxxxxxx>
---
include/timeutils.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/timeutils.h b/include/timeutils.h
index 874f853b7..edd42f7fe 100644
--- a/include/timeutils.h
+++ b/include/timeutils.h
@@ -65,7 +65,7 @@ enum {
ISO_8601_GMTIME = (1 << 7)
};
-#define ISO_8601_BUFSIZ 32
+#define ISO_8601_BUFSIZ 42
int strtimeval_iso(struct timeval *tv, int flags, char *buf, size_t bufsz);
int strtm_iso(struct tm *tm, int flags, char *buf, size_t bufsz);
--
To unsubscribe from this list: send the line "unsubscribe util-linux" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
