fix . .. unlink bug

1 files changed, 6 insertions, 0 deletions

diff --git a/fs.c b/fs.c
index 3f0a71d..8f7b872 100644
--- a/fs.c
+++ b/fs.c
@@ -579,6 +579,12 @@ namei(char *path, int mode, uint *ret_off,
 
   found:
     if(mode == NAMEI_DELETE && *cp == '\0'){
+      // can't unlink . and ..
+      if((i == 1 && memcmp(cp-1, ".", 1) == 0) ||
+         (i == 2 && memcmp(cp-2, "..", 2) == 0)){
+        iput(dp);
+        return 0;
+      }
       *ret_off = off;
       return dp;
     }