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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>
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@ -249,6 +249,18 @@ out:
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return error;
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}
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static int proc_getattr(struct vfsmount *mnt, struct dentry *dentry,
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struct kstat *stat)
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{
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struct inode *inode = dentry->d_inode;
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struct proc_dir_entry *de = PROC_I(inode)->pde;
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if (de && de->nlink)
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inode->i_nlink = de->nlink;
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generic_fillattr(inode, stat);
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return 0;
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}
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static struct inode_operations proc_file_inode_operations = {
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.setattr = proc_notify_change,
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};
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@ -475,6 +487,7 @@ static struct file_operations proc_dir_operations = {
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*/
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static struct inode_operations proc_dir_inode_operations = {
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.lookup = proc_lookup,
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.getattr = proc_getattr,
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.setattr = proc_notify_change,
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};
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