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-rw-r--r--libc/misc/ftw/ftw.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/libc/misc/ftw/ftw.c b/libc/misc/ftw/ftw.c
index 833821f22..605e07cd5 100644
--- a/libc/misc/ftw/ftw.c
+++ b/libc/misc/ftw/ftw.c
@@ -492,11 +492,14 @@ ftw_startup (const char *dir, int is_nftw, void *func, int descriptors, int flag
char *cp;
/* First make sure the parameters are reasonable. */
- if (dir[0] == '\0')
- {
+ if (unlikely(dir==NULL || *dir=='\0')) {
__set_errno (ENOENT);
return -1;
}
+ if ((strlen(dir)+1) > NAME_MAX) {
+ __set_errno(ENAMETOOLONG);
+ return -1;
+ }
data.maxdir = descriptors < 1 ? 1 : descriptors;
data.actdir = 0;