diff options
| author | NeilBrown <neilb@suse.de> | 2024-01-30 04:08:26 +0300 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2024-03-01 17:12:19 +0300 |
| commit | 1ac3629bf012592cb0320e52a1cceb319a05ad17 (patch) | |
| tree | 76ac786fb1c600e5ee6d5c1c5e8a9d1e17ab2c9d /fs/nfsd/nfsctl.c | |
| parent | 3f29cc82a84c23cfd12b903029dd26002ca825f5 (diff) | |
| download | linux-1ac3629bf012592cb0320e52a1cceb319a05ad17.tar.xz | |
nfsd: prepare for supporting admin-revocation of state
The NFSv4 protocol allows state to be revoked by the admin and has error
codes which allow this to be communicated to the client.
This patch
- introduces a new state-id status SC_STATUS_ADMIN_REVOKED
which can be set on open, lock, or delegation state.
- reports NFS4ERR_ADMIN_REVOKED when these are accessed
- introduces a per-client counter of these states and returns
SEQ4_STATUS_ADMIN_STATE_REVOKED when the counter is not zero.
Decrements this when freeing any admin-revoked state.
- introduces stub code to find all interesting states for a given
superblock so they can be revoked via the 'unlock_filesystem'
file in /proc/fs/nfsd/
No actual states are handled yet.
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'fs/nfsd/nfsctl.c')
| -rw-r--r-- | fs/nfsd/nfsctl.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c index 5a5547bd6ecf..ecd18bffeebc 100644 --- a/fs/nfsd/nfsctl.c +++ b/fs/nfsd/nfsctl.c @@ -281,6 +281,7 @@ static ssize_t write_unlock_fs(struct file *file, char *buf, size_t size) * 3. Is that directory the root of an exported file system? */ error = nlmsvc_unlock_all_by_sb(path.dentry->d_sb); + nfsd4_revoke_states(netns(file), path.dentry->d_sb); path_put(&path); return error; |