monitor: ensure that the device should be a block
device when uses --wait parameter, such as the 'f'
and 'd' type file would be triggered core dumped.
./mdadm --wait /dev/md/, happened core dump.
Reviewed-by: NeilBrown <neilb@xxxxxxxx>
Signed-off-by: Zhilong Liu <zlliu@xxxxxxxx>
---
Monitor.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/Monitor.c b/Monitor.c
index 802a9d9..f8850d3 100644
--- a/Monitor.c
+++ b/Monitor.c
@@ -1002,7 +1002,12 @@ int Wait(char *dev)
strerror(errno));
return 2;
}
- strcpy(devnm, stat2devnm(&stb));
+ char *tmp = stat2devnm(&stb);
+ if (!tmp) {
+ pr_err("%s is not a block device.\n", dev);
+ return 2;
+ }
+ strcpy(devnm, tmp);
while(1) {
struct mdstat_ent *ms = mdstat_read(1, 0);
--
2.6.6
--
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