[PATCH] FS: file name should be unique in the same dir in procfs

[Zhang Rui]

Files name should be unique in the same directory.

Bug is reported here: 
http://bugzilla.kernel.org/show_bug.cgi?id=8798

Signed-off-by: Zhang Rui <[EMAIL PROTECTED]>
---
 fs/proc/generic.c |    8 ++++++++
 1 file changed, 8 insertions(+)

Index: linux-2.6.23-rc3/fs/proc/generic.c
===================================================================
--- linux-2.6.23-rc3.orig/fs/proc/generic.c
+++ linux-2.6.23-rc3/fs/proc/generic.c
@@ -523,6 +523,7 @@ static const struct inode_operations pro
 
 static int proc_register(struct proc_dir_entry * dir, struct proc_dir_entry * 
dp)
 {
+       struct proc_dir_entry * tmp = NULL;
        unsigned int i;
        
        i = get_inode_number();
@@ -547,6 +548,13 @@ static int proc_register(struct proc_dir
        }
 
        spin_lock(&proc_subdir_lock);
+       for(tmp = dir->subdir; tmp; tmp = tmp->next)
+               if(!strcmp(dp->name, tmp->name)) {
+                       spin_unlock(&proc_subdir_lock);
+                       release_inode_number(i);
+                       return -EEXIST;
+               }
+
        dp->next = dir->subdir;
        dp->parent = dir;
        dir->subdir = dp;
-
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