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-rw-r--r--libbb/find_root_device.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/libbb/find_root_device.c b/libbb/find_root_device.c
index 32c86cea8..8436cd664 100644
--- a/libbb/find_root_device.c
+++ b/libbb/find_root_device.c
@@ -29,14 +29,15 @@ static char *find_block_device_in_dir(struct arena *ap)
char *retpath = NULL;
int len, rem;
- dir = opendir(ap->devpath);
- if (!dir)
- return NULL;
-
len = strlen(ap->devpath);
rem = DEVNAME_MAX-2 - len;
if (rem <= 0)
return NULL;
+
+ dir = opendir(ap->devpath);
+ if (!dir)
+ return NULL;
+
ap->devpath[len++] = '/';
while ((entry = readdir(dir)) != NULL) {