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nfs42: client needs to strip file mode's suid/sgid bit after ALLOCATE op

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commit f588d72bd95f748849685412b1f0c7959ca228cf upstream.

The Linux NFS server strips the SUID and SGID from the file mode
on ALLOCATE op.

Modify _nfs42_proc_fallocate to add NFS_INO_REVAL_FORCED to
nfs_set_cache_invalid's argument to force update of the file
mode suid/sgid bit.

Suggested-by: Trond Myklebust <trondmy@hammerspace.com>
Signed-off-by: Dai Ngo <dai.ngo@oracle.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Tested-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dai Ngo 2023-09-18 23:30:20 -07:00 committed by Greg Kroah-Hartman
parent 8d69b47443
commit a54974b007
1 changed files with 2 additions and 1 deletions
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3
fs/nfs/nfs42proc.c
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@ -81,7 +81,8 @@ static int _nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep,
if (status == 0) {
if (nfs_should_remove_suid(inode)) {
spin_lock(&inode->i_lock);
nfs_set_cache_invalid(inode, NFS_INO_INVALID_MODE);
nfs_set_cache_invalid(inode,
NFS_INO_REVAL_FORCED | NFS_INO_INVALID_MODE);
spin_unlock(&inode->i_lock);
}
status = nfs_post_op_update_inode_force_wcc(inode,