V4L/DVB (13946): proc_fops: convert av7110

[safe/jmp/linux-2.6] / net / sunrpc / svcauth_unix.c

diff --git a/net/sunrpc/svcauth_unix.c b/net/sunrpc/svcauth_unix.c
index 5c865e2..d8c0411 100644 (file)
--- a/net/sunrpc/svcauth_unix.c
+++ b/net/sunrpc/svcauth_unix.c
@@ -125,8 +125,8 @@ static int ip_map_match(struct cache_head *corig, struct cache_head *cnew)
 {
        struct ip_map *orig = container_of(corig, struct ip_map, h);
        struct ip_map *new = container_of(cnew, struct ip_map, h);
-       return strcmp(orig->m_class, new->m_class) == 0
-               && ipv6_addr_equal(&orig->m_addr, &new->m_addr);
+       return strcmp(orig->m_class, new->m_class) == 0 &&
+              ipv6_addr_equal(&orig->m_addr, &new->m_addr);
 }
 static void ip_map_init(struct cache_head *cnew, struct cache_head *citem)
 {
@@ -171,6 +171,11 @@ static void ip_map_request(struct cache_detail *cd,
        (*bpp)[-1] = '\n';
 }
 
+static int ip_map_upcall(struct cache_detail *cd, struct cache_head *h)
+{
+       return sunrpc_cache_pipe_upcall(cd, h, ip_map_request);
+}
+
 static struct ip_map *ip_map_lookup(char *class, struct in6_addr *addr);
 static int ip_map_update(struct ip_map *ipm, struct unix_domain *udom, time_t expiry);
 
@@ -289,7 +294,7 @@ struct cache_detail ip_map_cache = {
        .hash_table     = ip_table,
        .name           = "auth.unix.ip",
        .cache_put      = ip_map_put,
-       .cache_request  = ip_map_request,
+       .cache_upcall   = ip_map_upcall,
        .cache_parse    = ip_map_parse,
        .cache_show     = ip_map_show,
        .match          = ip_map_match,
@@ -523,6 +528,11 @@ static void unix_gid_request(struct cache_detail *cd,
        (*bpp)[-1] = '\n';
 }
 
+static int unix_gid_upcall(struct cache_detail *cd, struct cache_head *h)
+{
+       return sunrpc_cache_pipe_upcall(cd, h, unix_gid_request);
+}
+
 static struct unix_gid *unix_gid_lookup(uid_t uid);
 extern struct cache_detail unix_gid_cache;
 
@@ -622,7 +632,7 @@ struct cache_detail unix_gid_cache = {
        .hash_table     = gid_table,
        .name           = "auth.unix.gid",
        .cache_put      = unix_gid_put,
-       .cache_request  = unix_gid_request,
+       .cache_upcall   = unix_gid_upcall,
        .cache_parse    = unix_gid_parse,
        .cache_show     = unix_gid_show,
        .match          = unix_gid_match,
@@ -645,22 +655,25 @@ static struct unix_gid *unix_gid_lookup(uid_t uid)
                return NULL;
 }
 
-static int unix_gid_find(uid_t uid, struct group_info **gip,
-                        struct svc_rqst *rqstp)
+static struct group_info *unix_gid_find(uid_t uid, struct svc_rqst *rqstp)
 {
-       struct unix_gid *ug = unix_gid_lookup(uid);
+       struct unix_gid *ug;
+       struct group_info *gi;
+       int ret;
+
+       ug = unix_gid_lookup(uid);
        if (!ug)
-               return -EAGAIN;
-       switch (cache_check(&unix_gid_cache, &ug->h, &rqstp->rq_chandle)) {
+               return ERR_PTR(-EAGAIN);
+       ret = cache_check(&unix_gid_cache, &ug->h, &rqstp->rq_chandle);
+       switch (ret) {
        case -ENOENT:
-               *gip = NULL;
-               return 0;
+               return ERR_PTR(-ENOENT);
        case 0:
-               *gip = ug->gi;
-               get_group_info(*gip);
-               return 0;
+               gi = get_group_info(ug->gi);
+               cache_put(&ug->h, &unix_gid_cache);
+               return gi;
        default:
-               return -EAGAIN;
+               return ERR_PTR(-EAGAIN);
        }
 }
 
@@ -670,13 +683,14 @@ svcauth_unix_set_client(struct svc_rqst *rqstp)
        struct sockaddr_in *sin;
        struct sockaddr_in6 *sin6, sin6_storage;
        struct ip_map *ipm;
+       struct group_info *gi;
+       struct svc_cred *cred = &rqstp->rq_cred;
 
        switch (rqstp->rq_addr.ss_family) {
        case AF_INET:
                sin = svc_addr_in(rqstp);
                sin6 = &sin6_storage;
-               ipv6_addr_set(&sin6->sin6_addr, 0, 0,
-                               htonl(0x0000FFFF), sin->sin_addr.s_addr);
+               ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, &sin6->sin6_addr);
                break;
        case AF_INET6:
                sin6 = svc_addr_in6(rqstp);
@@ -711,6 +725,17 @@ svcauth_unix_set_client(struct svc_rqst *rqstp)
                        ip_map_cached_put(rqstp, ipm);
                        break;
        }
+
+       gi = unix_gid_find(cred->cr_uid, rqstp);
+       switch (PTR_ERR(gi)) {
+       case -EAGAIN:
+               return SVC_DROP;
+       case -ENOENT:
+               break;
+       default:
+               put_group_info(cred->cr_group_info);
+               cred->cr_group_info = gi;
+       }
        return SVC_OK;
 }
 
@@ -807,19 +832,11 @@ svcauth_unix_accept(struct svc_rqst *rqstp, __be32 *authp)
        slen = svc_getnl(argv);                 /* gids length */
        if (slen > 16 || (len -= (slen + 2)*4) < 0)
                goto badcred;
-       if (unix_gid_find(cred->cr_uid, &cred->cr_group_info, rqstp)
-           == -EAGAIN)
+       cred->cr_group_info = groups_alloc(slen);
+       if (cred->cr_group_info == NULL)
                return SVC_DROP;
-       if (cred->cr_group_info == NULL) {
-               cred->cr_group_info = groups_alloc(slen);
-               if (cred->cr_group_info == NULL)
-                       return SVC_DROP;
-               for (i = 0; i < slen; i++)
-                       GROUP_AT(cred->cr_group_info, i) = svc_getnl(argv);
-       } else {
-               for (i = 0; i < slen ; i++)
-                       svc_getnl(argv);
-       }
+       for (i = 0; i < slen; i++)
+               GROUP_AT(cred->cr_group_info, i) = svc_getnl(argv);
        if (svc_getu32(argv) != htonl(RPC_AUTH_NULL) || svc_getu32(argv) != 0) {
                *authp = rpc_autherr_badverf;
                return SVC_DENIED;