korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-13 14:24:11 +08:00
Code Issues Packages Projects Releases Wiki Activity

SUNRPC: Split portmap unregister API into separate function

Browse Source 
Create a separate server-level interface for unregistering RPC services.

The mechanics of, and the API for, registering and unregistering RPC
services will diverge further as support for IPv6 is added.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
This commit is contained in:
Chuck Lever 2008-08-18 19:34:08 -04:00 committed by J. Bruce Fields
parent 14aeb2118d
commit 7252d575ab
1 changed files with 50 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

62
net/sunrpc/svc.c
View File

@ -28,6 +28,8 @@
#define RPCDBG_FACILITY RPCDBG_SVCDSP
static void svc_unregister(const struct svc_serv *serv);
#define svc_serv_is_pooled(serv) ((serv)->sv_function)
/*
@ -417,9 +419,8 @@ __svc_create(struct svc_program *prog, unsigned int bufsize, int npools,
spin_lock_init(&pool->sp_lock);
}
/* Remove any stale portmap registrations */
svc_register(serv, 0, 0);
svc_unregister(serv);
return serv;
}
@ -487,8 +488,7 @@ svc_destroy(struct svc_serv *serv)
if (svc_serv_is_pooled(serv))
svc_pool_map_put();
/* Unregister service with the portmapper */
svc_register(serv, 0, 0);
svc_unregister(serv);
kfree(serv->sv_pools);
kfree(serv);
}
@ -728,12 +728,10 @@ int
svc_register(struct svc_serv *serv, int proto, unsigned short port)
{
struct svc_program *progp;
unsigned long flags;
unsigned int i;
int error = 0;
if (!port)
clear_thread_flag(TIF_SIGPENDING);
BUG_ON(proto == 0 && port == 0);
for (progp = serv->sv_program; progp; progp = progp->pg_next) {
for (i = 0; i < progp->pg_nvers; i++) {
@ -757,13 +755,53 @@ svc_register(struct svc_serv *serv, int proto, unsigned short port)
}
}
if (!port) {
spin_lock_irqsave(&current->sighand->siglock, flags);
recalc_sigpending();
spin_unlock_irqrestore(&current->sighand->siglock, flags);
return error;
}
/*
* All transport protocols and ports for this service are removed
* from the local rpcbind database if the service is not hidden.
*
* The result of unregistration is reported via dprintk for those
* who want verification of the result, but is otherwise not
* important.
*
* The local rpcbind daemon listens on either only IPv6 or only
* IPv4. The kernel can't tell how it's configured. However,
* AF_INET addresses are mapped to AF_INET6 in IPv6-only config-
* urations, so even an unregistration request on AF_INET will
* get to a local rpcbind daemon listening only on AF_INET6. So
* we always unregister via AF_INET.
*
* At this point we don't need rpcbind version 4 for unregis-
* tration: A v2 UNSET request will clear all transports (netids),
* addresses, and address families for [program, version].
*/
static void svc_unregister(const struct svc_serv *serv)
{
struct svc_program *progp;
unsigned long flags;
unsigned int i;
int error;
clear_thread_flag(TIF_SIGPENDING);
for (progp = serv->sv_program; progp; progp = progp->pg_next) {
for (i = 0; i < progp->pg_nvers; i++) {
if (progp->pg_vers[i] == NULL)
continue;
if (progp->pg_vers[i]->vs_hidden)
continue;
error = rpcb_register(progp->pg_prog, i, 0, 0);
dprintk("svc: svc_unregister(%sv%u), error %d\n",
progp->pg_name, i, error);
}
}
return error;
spin_lock_irqsave(&current->sighand->siglock, flags);
recalc_sigpending();
spin_unlock_irqrestore(&current->sighand->siglock, flags);
}
/*