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Diffstat (limited to 'net/sunrpc/auth_unix.c')
-rw-r--r--net/sunrpc/auth_unix.c54
1 files changed, 32 insertions, 22 deletions
diff --git a/net/sunrpc/auth_unix.c b/net/sunrpc/auth_unix.c
index 4e7733aee36e..5ed91e5bcee4 100644
--- a/net/sunrpc/auth_unix.c
+++ b/net/sunrpc/auth_unix.c
@@ -20,11 +20,6 @@ struct unx_cred {
gid_t uc_gids[NFS_NGROUPS];
};
#define uc_uid uc_base.cr_uid
-#define uc_count uc_base.cr_count
-#define uc_flags uc_base.cr_flags
-#define uc_expire uc_base.cr_expire
-
-#define UNX_CRED_EXPIRE (60 * HZ)
#define UNX_WRITESLACK (21 + (UNX_MAXNODENAME >> 2))
@@ -34,15 +29,14 @@ struct unx_cred {
static struct rpc_auth unix_auth;
static struct rpc_cred_cache unix_cred_cache;
-static struct rpc_credops unix_credops;
+static const struct rpc_credops unix_credops;
static struct rpc_auth *
unx_create(struct rpc_clnt *clnt, rpc_authflavor_t flavor)
{
dprintk("RPC: creating UNIX authenticator for client %p\n",
clnt);
- if (atomic_inc_return(&unix_auth.au_count) == 0)
- unix_cred_cache.nextgc = jiffies + (unix_cred_cache.expire >> 1);
+ atomic_inc(&unix_auth.au_count);
return &unix_auth;
}
@@ -50,7 +44,7 @@ static void
unx_destroy(struct rpc_auth *auth)
{
dprintk("RPC: destroying UNIX authenticator %p\n", auth);
- rpcauth_free_credcache(auth);
+ rpcauth_clear_credcache(auth->au_credcache);
}
/*
@@ -74,8 +68,8 @@ unx_create_cred(struct rpc_auth *auth, struct auth_cred *acred, int flags)
if (!(cred = kmalloc(sizeof(*cred), GFP_KERNEL)))
return ERR_PTR(-ENOMEM);
- atomic_set(&cred->uc_count, 1);
- cred->uc_flags = RPCAUTH_CRED_UPTODATE;
+ rpcauth_init_cred(&cred->uc_base, acred, auth, &unix_credops);
+ cred->uc_base.cr_flags = 1UL << RPCAUTH_CRED_UPTODATE;
if (flags & RPCAUTH_LOOKUP_ROOTCREDS) {
cred->uc_uid = 0;
cred->uc_gid = 0;
@@ -85,22 +79,34 @@ unx_create_cred(struct rpc_auth *auth, struct auth_cred *acred, int flags)
if (groups > NFS_NGROUPS)
groups = NFS_NGROUPS;
- cred->uc_uid = acred->uid;
cred->uc_gid = acred->gid;
for (i = 0; i < groups; i++)
cred->uc_gids[i] = GROUP_AT(acred->group_info, i);
if (i < NFS_NGROUPS)
cred->uc_gids[i] = NOGROUP;
}
- cred->uc_base.cr_ops = &unix_credops;
- return (struct rpc_cred *) cred;
+ return &cred->uc_base;
+}
+
+static void
+unx_free_cred(struct unx_cred *unx_cred)
+{
+ dprintk("RPC: unx_free_cred %p\n", unx_cred);
+ kfree(unx_cred);
+}
+
+static void
+unx_free_cred_callback(struct rcu_head *head)
+{
+ struct unx_cred *unx_cred = container_of(head, struct unx_cred, uc_base.cr_rcu);
+ unx_free_cred(unx_cred);
}
static void
unx_destroy_cred(struct rpc_cred *cred)
{
- kfree(cred);
+ call_rcu(&cred->cr_rcu, unx_free_cred_callback);
}
/*
@@ -111,7 +117,7 @@ unx_destroy_cred(struct rpc_cred *cred)
static int
unx_match(struct auth_cred *acred, struct rpc_cred *rcred, int flags)
{
- struct unx_cred *cred = (struct unx_cred *) rcred;
+ struct unx_cred *cred = container_of(rcred, struct unx_cred, uc_base);
int i;
if (!(flags & RPCAUTH_LOOKUP_ROOTCREDS)) {
@@ -142,7 +148,7 @@ static __be32 *
unx_marshal(struct rpc_task *task, __be32 *p)
{
struct rpc_clnt *clnt = task->tk_client;
- struct unx_cred *cred = (struct unx_cred *) task->tk_msg.rpc_cred;
+ struct unx_cred *cred = container_of(task->tk_msg.rpc_cred, struct unx_cred, uc_base);
__be32 *base, *hold;
int i;
@@ -175,7 +181,7 @@ unx_marshal(struct rpc_task *task, __be32 *p)
static int
unx_refresh(struct rpc_task *task)
{
- task->tk_msg.rpc_cred->cr_flags |= RPCAUTH_CRED_UPTODATE;
+ set_bit(RPCAUTH_CRED_UPTODATE, &task->tk_msg.rpc_cred->cr_flags);
return 0;
}
@@ -198,13 +204,18 @@ unx_validate(struct rpc_task *task, __be32 *p)
printk("RPC: giant verf size: %u\n", size);
return NULL;
}
- task->tk_auth->au_rslack = (size >> 2) + 2;
+ task->tk_msg.rpc_cred->cr_auth->au_rslack = (size >> 2) + 2;
p += (size >> 2);
return p;
}
-struct rpc_authops authunix_ops = {
+void __init rpc_init_authunix(void)
+{
+ spin_lock_init(&unix_cred_cache.lock);
+}
+
+const struct rpc_authops authunix_ops = {
.owner = THIS_MODULE,
.au_flavor = RPC_AUTH_UNIX,
#ifdef RPC_DEBUG
@@ -218,7 +229,6 @@ struct rpc_authops authunix_ops = {
static
struct rpc_cred_cache unix_cred_cache = {
- .expire = UNX_CRED_EXPIRE,
};
static
@@ -232,7 +242,7 @@ struct rpc_auth unix_auth = {
};
static
-struct rpc_credops unix_credops = {
+const struct rpc_credops unix_credops = {
.cr_name = "AUTH_UNIX",
.crdestroy = unx_destroy_cred,
.crmatch = unx_match,