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mdev: fix a trivial SEGV

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2010-03-16 18:37:19 +01:00
parent d46c36c74e
commit 8d4a8d195d
1 changed files with 1 additions and 1 deletions
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2
util-linux/mdev.c
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@ -140,7 +140,7 @@ static void make_device(char *path, int delete)
* But since 2.6.25 block devices are also in /sys/class/block.
* We use strstr("/block/") to forestall future surprises. */
type = S_IFCHR;
if (strstr(path, "/block/") || strncmp(G.subsystem, "block", 5) == 0)
if (strstr(path, "/block/") || (G.subsystem && strncmp(G.subsystem, "block", 5) == 0))
type = S_IFBLK;
/* Make path point to "subsystem/device_name" */