diff options
Diffstat (limited to 'lib/sysfs_utils.c')
| -rw-r--r-- | lib/sysfs_utils.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/sysfs_utils.c b/lib/sysfs_utils.c index 983cb2d..6397342 100644 --- a/lib/sysfs_utils.c +++ b/lib/sysfs_utils.c @@ -54,6 +54,9 @@ int sysfs_get_mnt_path(char *mnt_path, size_t len) static char sysfs_path[SYSFS_PATH_MAX] = ""; const char *sysfs_path_env; + if (len == 0 || mnt_path == NULL) + return -1; + /* evaluate only at the first call */ if (sysfs_path[0] == '\0') { /* possible overrride of real mount path */ |