* [PATCH] tune2fs: Fix overflow of interval check
@ 2011-04-19 6:11 Kazuya Mio
2011-06-01 0:11 ` Ted Ts'o
0 siblings, 1 reply; 2+ messages in thread
From: Kazuya Mio @ 2011-04-19 6:11 UTC (permalink / raw)
To: ext4, Theodore Tso
Add the check of maximum check interval.
s_checkinterval is 32bit variable, so it cannot be set more than 2^32.
Signed-off-by: Kazuya Mio <k-mio@sx.jp.nec.com>
---
misc/tune2fs.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/misc/tune2fs.c b/misc/tune2fs.c
index bcada11..625866f 100644
--- a/misc/tune2fs.c
+++ b/misc/tune2fs.c
@@ -1705,6 +1705,12 @@ retry_open:
printf(_("Setting reserved blocks gid to %lu\n"), resgid);
}
if (i_flag) {
+ if (interval >= (1ULL << 32)) {
+ com_err(program_name, 0,
+ _("interval between checks is too big (%lu)"),
+ interval);
+ exit(1);
+ }
sb->s_checkinterval = interval;
ext2fs_mark_super_dirty(fs);
printf(_("Setting interval between checks to %lu seconds\n"),
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2011-04-19 6:11 [PATCH] tune2fs: Fix overflow of interval check Kazuya Mio
2011-06-01 0:11 ` Ted Ts'o
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