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authorNeilBrown <neilb@suse.de>2006-03-27 01:14:59 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-27 08:44:41 -0800
commitefc36aa5608f5717338747e152c23f2cfdb14697 (patch)
treeab444f6e6c88ed07a8d5a034777c10de50e663fd /net/sunrpc/svcauth_unix.c
parent3e7b19198003fc25b11838e709f17d4fa173b2d7 (diff)
[PATCH] knfsd: Change the store of auth_domains to not be a 'cache'
The 'auth_domain's are simply handles on internal data structures. They do not cache information from user-space, and forcing them into the mold of a 'cache' misrepresents their true nature and causes confusion. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'net/sunrpc/svcauth_unix.c')
-rw-r--r--net/sunrpc/svcauth_unix.c69
1 files changed, 31 insertions, 38 deletions
diff --git a/net/sunrpc/svcauth_unix.c b/net/sunrpc/svcauth_unix.c
index 3e6c694bbad..17e8b2a3130 100644
--- a/net/sunrpc/svcauth_unix.c
+++ b/net/sunrpc/svcauth_unix.c
@@ -27,41 +27,35 @@ struct unix_domain {
/* other stuff later */
};
+extern struct auth_ops svcauth_unix;
+
struct auth_domain *unix_domain_find(char *name)
{
- struct auth_domain *rv, ud;
- struct unix_domain *new;
-
- ud.name = name;
-
- rv = auth_domain_lookup(&ud, 0);
-
- foundit:
- if (rv && rv->flavour != RPC_AUTH_UNIX) {
- auth_domain_put(rv);
- return NULL;
- }
- if (rv)
- return rv;
-
- new = kmalloc(sizeof(*new), GFP_KERNEL);
- if (new == NULL)
- return NULL;
- cache_init(&new->h.h);
- new->h.name = kstrdup(name, GFP_KERNEL);
- new->h.flavour = RPC_AUTH_UNIX;
- new->addr_changes = 0;
- new->h.h.expiry_time = NEVER;
-
- rv = auth_domain_lookup(&new->h, 2);
- if (rv == &new->h) {
- if (atomic_dec_and_test(&new->h.h.refcnt)) BUG();
- } else {
- auth_domain_put(&new->h);
- goto foundit;
+ struct auth_domain *rv;
+ struct unix_domain *new = NULL;
+
+ rv = auth_domain_lookup(name, NULL);
+ while(1) {
+ if (rv != &new->h) {
+ if (new) auth_domain_put(&new->h);
+ return rv;
+ }
+ if (rv && rv->flavour != &svcauth_unix) {
+ auth_domain_put(rv);
+ return NULL;
+ }
+ if (rv)
+ return rv;
+
+ new = kmalloc(sizeof(*new), GFP_KERNEL);
+ if (new == NULL)
+ return NULL;
+ kref_init(&new->h.ref);
+ new->h.name = kstrdup(name, GFP_KERNEL);
+ new->h.flavour = &svcauth_unix;
+ new->addr_changes = 0;
+ rv = auth_domain_lookup(name, &new->h);
}
-
- return rv;
}
static void svcauth_unix_domain_release(struct auth_domain *dom)
@@ -130,7 +124,7 @@ static inline void ip_map_init(struct ip_map *new, struct ip_map *item)
}
static inline void ip_map_update(struct ip_map *new, struct ip_map *item)
{
- cache_get(&item->m_client->h.h);
+ kref_get(&item->m_client->h.ref);
new->m_client = item->m_client;
new->m_add_change = item->m_add_change;
}
@@ -272,7 +266,7 @@ int auth_unix_add_addr(struct in_addr addr, struct auth_domain *dom)
struct unix_domain *udom;
struct ip_map ip, *ipmp;
- if (dom->flavour != RPC_AUTH_UNIX)
+ if (dom->flavour != &svcauth_unix)
return -EINVAL;
udom = container_of(dom, struct unix_domain, h);
strcpy(ip.m_class, "nfsd");
@@ -295,7 +289,7 @@ int auth_unix_forget_old(struct auth_domain *dom)
{
struct unix_domain *udom;
- if (dom->flavour != RPC_AUTH_UNIX)
+ if (dom->flavour != &svcauth_unix)
return -EINVAL;
udom = container_of(dom, struct unix_domain, h);
udom->addr_changes++;
@@ -323,7 +317,7 @@ struct auth_domain *auth_unix_lookup(struct in_addr addr)
rv = NULL;
} else {
rv = &ipm->m_client->h;
- cache_get(&rv->h);
+ kref_get(&rv->ref);
}
ip_map_put(&ipm->h, &ip_map_cache);
return rv;
@@ -332,7 +326,6 @@ struct auth_domain *auth_unix_lookup(struct in_addr addr)
void svcauth_unix_purge(void)
{
cache_purge(&ip_map_cache);
- cache_purge(&auth_domain_cache);
}
static int
@@ -361,7 +354,7 @@ svcauth_unix_set_client(struct svc_rqst *rqstp)
return SVC_DENIED;
case 0:
rqstp->rq_client = &ipm->m_client->h;
- cache_get(&rqstp->rq_client->h);
+ kref_get(&rqstp->rq_client->ref);
ip_map_put(&ipm->h, &ip_map_cache);
break;
}