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commit f8849e206ef52b584cd9227255f4724f0cc900bb upstream.
Currently if __nfs4_proc_set_acl fails with NFS4ERR_BADOWNER it
re-enables the idmapper by clearing NFS_CAP_UIDGID_NOMAP before
retrying again. The NFS_CAP_UIDGID_NOMAP remains cleared even if
the retry fails. This causes problem for subsequent setattr
requests for v4 server that does not have idmapping configured.
This patch modifies nfs4_proc_set_acl to detect NFS4ERR_BADOWNER
and NFS4ERR_BADNAME and skips the retry, since the kernel isn't
involved in encoding the ACEs, and return -EINVAL.
Steps to reproduce the problem:
# mount -o vers=4.1,sec=sys server:/export/test /tmp/mnt
# touch /tmp/mnt/file1
# chown 99 /tmp/mnt/file1
# nfs4_setfacl -a A::unknown.user@xyz.com:wrtncy /tmp/mnt/file1
Failed setxattr operation: Invalid argument
# chown 99 /tmp/mnt/file1
chown: changing ownership of ‘/tmp/mnt/file1’: Invalid argument
# umount /tmp/mnt
# mount -o vers=4.1,sec=sys server:/export/test /tmp/mnt
# chown 99 /tmp/mnt/file1
#
v2: detect NFS4ERR_BADOWNER and NFS4ERR_BADNAME and skip retry
in nfs4_proc_set_acl.
Signed-off-by: Dai Ngo <dai.ngo@oracle.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
f80f193f9d