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| author | Eric W. Biederman <ebiederm@xmission.com> | 2013-02-02 01:57:30 -0800 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2013-02-13 06:15:23 -0800 |
| commit | 9e469e30d712b54cd3ff4a82d4dd5510522b8f16 (patch) | |
| tree | e3bf5401b2489973a0b7f10e1f555f24e07f0341 /net/sunrpc | |
| parent | 683428fae8c73d7d7da0fa2e0b6beb4d8df4e808 (diff) | |
| download | linux-stable-9e469e30d712b54cd3ff4a82d4dd5510522b8f16.tar.gz linux-stable-9e469e30d712b54cd3ff4a82d4dd5510522b8f16.tar.bz2 linux-stable-9e469e30d712b54cd3ff4a82d4dd5510522b8f16.zip | |
sunrpc: Hash uids by first computing their value in the initial userns
In svcauth_unix introduce a helper unix_gid_hash as otherwise the
expresion to generate the hash value is just too long.
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Cc: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to 'net/sunrpc')
| -rw-r--r-- | net/sunrpc/auth.c | 2 | ||||
| -rw-r--r-- | net/sunrpc/svcauth_unix.c | 9 |
2 files changed, 8 insertions, 3 deletions
diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c index 4cd0ecfe9837..392adc41e2e5 100644 --- a/net/sunrpc/auth.c +++ b/net/sunrpc/auth.c @@ -412,7 +412,7 @@ rpcauth_lookup_credcache(struct rpc_auth *auth, struct auth_cred * acred, *entry, *new; unsigned int nr; - nr = hash_long(acred->uid, cache->hashbits); + nr = hash_long(from_kuid(&init_user_ns, acred->uid), cache->hashbits); rcu_read_lock(); hlist_for_each_entry_rcu(entry, pos, &cache->hashtable[nr], cr_hash) { diff --git a/net/sunrpc/svcauth_unix.c b/net/sunrpc/svcauth_unix.c index 92166b57ec7a..faf17195a9fd 100644 --- a/net/sunrpc/svcauth_unix.c +++ b/net/sunrpc/svcauth_unix.c @@ -419,6 +419,11 @@ struct unix_gid { struct group_info *gi; }; +static int unix_gid_hash(kuid_t uid) +{ + return hash_long(from_kuid(&init_user_ns, uid), GID_HASHBITS); +} + static void unix_gid_put(struct kref *kref) { struct cache_head *item = container_of(kref, struct cache_head, ref); @@ -530,7 +535,7 @@ static int unix_gid_parse(struct cache_detail *cd, ug.h.expiry_time = expiry; ch = sunrpc_cache_update(cd, &ug.h, &ugp->h, - hash_long(uid, GID_HASHBITS)); + unix_gid_hash(uid)); if (!ch) err = -ENOMEM; else { @@ -621,7 +626,7 @@ static struct unix_gid *unix_gid_lookup(struct cache_detail *cd, kuid_t uid) struct cache_head *ch; ug.uid = uid; - ch = sunrpc_cache_lookup(cd, &ug.h, hash_long(uid, GID_HASHBITS)); + ch = sunrpc_cache_lookup(cd, &ug.h, unix_gid_hash(uid)); if (ch) return container_of(ch, struct unix_gid, h); else |