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80df9d2022
This patch subscribes RPC clients to RPC pipefs notifications. RPC clients notifier block is registering with pipefs initialization during SUNRPC module init. This notifier callback is responsible for RPC client PipeFS directory and GSS pipes creation. For pipes creation and destruction two additional callbacks were added to struct rpc_authops. Note that no locking required in notifier callback because PipeFS superblock pointer is passed as an argument from it's creation or destruction routine and thus we can be sure about it's validity. Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
54 lines
1.8 KiB
C
54 lines
1.8 KiB
C
/******************************************************************************
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(c) 2008 NetApp. All Rights Reserved.
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NetApp provides this source code under the GPL v2 License.
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The GPL v2 license is available at
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http://opensource.org/licenses/gpl-license.php.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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******************************************************************************/
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/*
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* Functions and macros used internally by RPC
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*/
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#ifndef _NET_SUNRPC_SUNRPC_H
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#define _NET_SUNRPC_SUNRPC_H
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#include <linux/net.h>
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/*
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* Header for dynamically allocated rpc buffers.
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*/
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struct rpc_buffer {
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size_t len;
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char data[];
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};
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static inline int rpc_reply_expected(struct rpc_task *task)
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{
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return (task->tk_msg.rpc_proc != NULL) &&
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(task->tk_msg.rpc_proc->p_decode != NULL);
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}
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int svc_send_common(struct socket *sock, struct xdr_buf *xdr,
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struct page *headpage, unsigned long headoffset,
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struct page *tailpage, unsigned long tailoffset);
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int rpc_clients_notifier_register(void);
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void rpc_clients_notifier_unregister(void);
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#endif /* _NET_SUNRPC_SUNRPC_H */
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