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[PATCH] proc: link count fix 

This patch fixes bug titled "sunrpc as module and bad proc/sys link count"
reported by Jiri Slaby.

The problem was, that only proc_dir_entry->nlink was updated and the
corresponding inode->i_nlink was not.  The fix is to implement the
inode->getattr() method, and update i_nlink (if necessary).

A quick audit of proc code shows that no other attribute changes after
creation.

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
hifive-unleashed-5.1
Miklos Szeredi 2005-09-06 15:17:18 -07:00 committed by Linus Torvalds
parent 230649da7c
commit 2b579beec2
1 changed files with 13 additions and 0 deletions
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13
fs/proc/generic.c
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@ -249,6 +249,18 @@ out:
return error;
}
static int proc_getattr(struct vfsmount *mnt, struct dentry *dentry,
struct kstat *stat)
{
struct inode *inode = dentry->d_inode;
struct proc_dir_entry *de = PROC_I(inode)->pde;
if (de && de->nlink)
inode->i_nlink = de->nlink;
generic_fillattr(inode, stat);
return 0;
}
static struct inode_operations proc_file_inode_operations = {
.setattr = proc_notify_change,
};
@ -475,6 +487,7 @@ static struct file_operations proc_dir_operations = {
*/
static struct inode_operations proc_dir_inode_operations = {
.lookup = proc_lookup,
.getattr = proc_getattr,
.setattr = proc_notify_change,
};