xv6

commit 15a269363777c0cd95e2a56e7def0a4dc3122e21
parent f3e87bc838a09163f91ab79696a34f8c19386c55
Author: kolya <kolya>
Date:   Fri, 17 Oct 2008 12:42:13 +0000

try harder to get directory refcounts right

Diffstat:
M
sysfile.c
 | 
10
++++++++--

1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/sysfile.c b/sysfile.c
@@ -199,6 +199,10 @@ sys_unlink(void)
   memset(&de, 0, sizeof(de));
   if(writei(dp, (char*)&de, off, sizeof(de)) != sizeof(de))
     panic("unlink: writei");
+  if(ip->type == T_DIR){
+    dp->nlink--;
+    iupdate(dp);
+  }
   iunlockput(dp);
 
   ip->nlink--;
@@ -247,8 +251,10 @@ create(char *path, int canexist, short type, short major, short minor)
   }
 
   if(dirlink(dp, name, ip->inum) < 0){
-    dp->nlink--;
-    iupdate(dp);
+    if(type == T_DIR){
+      dp->nlink--;
+      iupdate(dp);
+    }
     iunlockput(dp);
 
     ip->nlink = 0;