diff options
| author | Chuck Lever <chuck.lever@oracle.com> | 2026-04-19 14:53:02 -0400 |
|---|---|---|
| committer | Chuck Lever <cel@kernel.org> | 2026-06-09 16:32:59 -0400 |
| commit | 978cda83de411fcbff22ac5b2b0024cae7df806f (patch) | |
| tree | 2e1ada501f3502d81a7e22bf852f4de8aea4ddb0 /Documentation/netlink | |
| parent | 0a7c2aa5844c9ad57bee914d46bc1f84b2fd96a0 (diff) | |
NFSD: Add NFSD_CMD_UNLOCK_IP netlink command
The existing write_unlock_ip procfs interface releases NLM file
locks held by a specific client IP address, but procfs provides
no structured way to extend that operation to other scopes such as
revoking NFSv4 state.
Add NFSD_CMD_UNLOCK_IP as a dedicated netlink command for
releasing NLM locks by client address. The command accepts a
binary sockaddr_in or sockaddr_in6 in its address attribute.
The handler validates the address family and length, then calls
nlmsvc_unlock_all_by_ip() to release matching NLM locks. Because
lockd is a single global instance, that call operates across
all network namespaces regardless of which namespace the caller
inhabits.
A separate netlink command for filesystem-scoped unlock is added in
a subsequent commit.
The nfsd_ctl_unlock_ip tracepoint is updated from string-based
address logging to __sockaddr, which stores the binary sockaddr
and formats it with %pISpc. This affects both the new netlink path
and the existing procfs write_unlock_ip path, giving consistent
structured output in both cases.
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Tested-by: Dai Ngo <dai.ngo@oracle.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'Documentation/netlink')
| -rw-r--r-- | Documentation/netlink/specs/nfsd.yaml | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/Documentation/netlink/specs/nfsd.yaml b/Documentation/netlink/specs/nfsd.yaml index 25497b533185..bf41682464c3 100644 --- a/Documentation/netlink/specs/nfsd.yaml +++ b/Documentation/netlink/specs/nfsd.yaml @@ -301,6 +301,15 @@ attribute-sets: type: u32 enum: cache-type enum-as-flags: true + - + name: unlock-ip + attributes: + - + name: address + type: binary + doc: struct sockaddr_in or struct sockaddr_in6. + checks: + min-len: 16 operations: list: @@ -455,6 +464,15 @@ operations: request: attributes: - mask + - + name: unlock-ip + doc: release NLM locks held by an IP address + attribute-set: unlock-ip + flags: [admin-perm] + do: + request: + attributes: + - address mcast-groups: list: |