mirrors/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-01-23 08:35:19 -05:00
Code Activity

lockd: Create a simplified .vs_dispatch method for NLM requests

Browse source 
To enable xdr_stream-based encoding and decoding, create a bespoke
RPC dispatch function for the lockd service.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Chuck Lever 2021-06-03 16:50:46 -04:00 committed by J. Bruce Fields
parent 99cdf57b33
commit a9ad1a8090
1 changed files with 43 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

43
fs/lockd/svc.c
View file

@ -766,6 +766,46 @@ static void __exit exit_nlm(void)
module_init(init_nlm);
module_exit(exit_nlm);
/**
* nlmsvc_dispatch - Process an NLM Request
* @rqstp: incoming request
* @statp: pointer to location of accept_stat field in RPC Reply buffer
*
* Return values:
* %0: Processing complete; do not send a Reply
* %1: Processing complete; send Reply in rqstp->rq_res
*/
static int nlmsvc_dispatch(struct svc_rqst *rqstp, __be32 *statp)
{
const struct svc_procedure *procp = rqstp->rq_procinfo;
struct kvec *argv = rqstp->rq_arg.head;
struct kvec *resv = rqstp->rq_res.head;
svcxdr_init_decode(rqstp);
if (!procp->pc_decode(rqstp, argv->iov_base))
goto out_decode_err;
*statp = procp->pc_func(rqstp);
if (*statp == rpc_drop_reply)
return 0;
if (*statp != rpc_success)
return 1;
svcxdr_init_encode(rqstp);
if (!procp->pc_encode(rqstp, resv->iov_base + resv->iov_len))
goto out_encode_err;
return 1;
out_decode_err:
*statp = rpc_garbage_args;
return 1;
out_encode_err:
*statp = rpc_system_err;
return 1;
}
/*
* Define NLM program and procedures
*/
@ -775,6 +815,7 @@ static const struct svc_version nlmsvc_version1 = {
.vs_nproc = 17,
.vs_proc = nlmsvc_procedures,
.vs_count = nlmsvc_version1_count,
.vs_dispatch = nlmsvc_dispatch,
.vs_xdrsize = NLMSVC_XDRSIZE,
};
static unsigned int nlmsvc_version3_count[24];
@ -783,6 +824,7 @@ static const struct svc_version nlmsvc_version3 = {
.vs_nproc = 24,
.vs_proc = nlmsvc_procedures,
.vs_count = nlmsvc_version3_count,
.vs_dispatch = nlmsvc_dispatch,
.vs_xdrsize = NLMSVC_XDRSIZE,
};
#ifdef CONFIG_LOCKD_V4
@ -792,6 +834,7 @@ static const struct svc_version nlmsvc_version4 = {
.vs_nproc = 24,
.vs_proc = nlmsvc_procedures4,
.vs_count = nlmsvc_version4_count,
.vs_dispatch = nlmsvc_dispatch,
.vs_xdrsize = NLMSVC_XDRSIZE,
};
#endif