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cifs: don't allow cifs_iget to match inodes of the wrong type

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If the type is different from what we think it should be, then don't
match the existing inode.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Jeff Layton 2010-07-19 18:00:17 -04:00 committed by Steve French
parent 9f841593ff
commit f30b9c1184
1 changed files with 5 additions and 0 deletions
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5
fs/cifs/inode.c
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@ -724,9 +724,14 @@ cifs_find_inode(struct inode *inode, void *opaque)
{
struct cifs_fattr *fattr = (struct cifs_fattr *) opaque;
/* don't match inode with different uniqueid */
if (CIFS_I(inode)->uniqueid != fattr->cf_uniqueid)
return 0;
/* don't match inode of different type */
if ((inode->i_mode & S_IFMT) != (fattr->cf_mode & S_IFMT))
return 0;
/*
* uh oh -- it's a directory. We can't use it since hardlinked dirs are
* verboten. Disable serverino and return it as if it were found, the