diff options
| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2005-08-16 11:49:44 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-08-16 09:30:58 -0700 |
| commit | 65e4308d2500e7daf60c3dccc202c61ffb066c63 (patch) | |
| tree | 76a2e00004f645d09b2e59b485fb2aea0af45234 /fs/nfs/nfs3proc.c | |
| parent | 367ae3cd74bdc2ad32d71293427fec570b14ddcd (diff) | |
| download | lwn-65e4308d2500e7daf60c3dccc202c61ffb066c63.tar.gz lwn-65e4308d2500e7daf60c3dccc202c61ffb066c63.zip | |
[PATCH] NFS: Ensure we always update inode->i_mode when doing O_EXCL creates
When the client performs an exclusive create and opens the file for writing,
a Netapp filer will first create the file using the mode 01777. It does this
since an NFSv3/v4 exclusive create cannot immediately set the mode bits.
The 01777 mode then gets put into the inode->i_mode. After the file creation
is successful, we then do a setattr to change the mode to the correct value
(as per the NFS spec).
The problem is that nfs_refresh_inode() no longer updates inode->i_mode, so
the latter retains the 01777 mode. A bit later, the VFS notices this, and calls
remove_suid(). This of course now resets the file mode to inode->i_mode & 0777.
Hey presto, the file mode on the server is now magically changed to 0777. Duh...
Fixes http://bugzilla.linux-nfs.org/show_bug.cgi?id=32
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/nfs/nfs3proc.c')
| -rw-r--r-- | fs/nfs/nfs3proc.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c index 7851569b31c6..2681485cf2d0 100644 --- a/fs/nfs/nfs3proc.c +++ b/fs/nfs/nfs3proc.c @@ -120,6 +120,8 @@ nfs3_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, dprintk("NFS call setattr\n"); fattr->valid = 0; status = rpc_call(NFS_CLIENT(inode), NFS3PROC_SETATTR, &arg, fattr, 0); + if (status == 0) + nfs_setattr_update_inode(inode, sattr); dprintk("NFS reply setattr: %d\n", status); return status; } @@ -370,6 +372,8 @@ again: * not sure this buys us anything (and I'd have * to revamp the NFSv3 XDR code) */ status = nfs3_proc_setattr(dentry, &fattr, sattr); + if (status == 0) + nfs_setattr_update_inode(dentry->d_inode, sattr); nfs_refresh_inode(dentry->d_inode, &fattr); dprintk("NFS reply setattr (post-create): %d\n", status); } |