diff options
| author | David Howells <dhowells@redhat.com> | 2014-07-18 18:56:35 +0100 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2014-07-22 21:46:23 +0100 |
| commit | efa64c0978a1fb3de8bca6f931b9858c3e371f1f (patch) | |
| tree | 1d89d5c247eff51025fe9f31bb7c8273693b8964 /net/ceph/crypto.c | |
| parent | f9167789df53f22af771fb6690a3d36aa21d74c5 (diff) | |
| download | linux-efa64c0978a1fb3de8bca6f931b9858c3e371f1f.tar.bz2 | |
KEYS: Ceph: Use key preparsing
Make use of key preparsing in Ceph so that quota size determination can take
place prior to keyring locking when a key is being added.
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Steve Dickson <steved@redhat.com>
Reviewed-by: Sage Weil <sage@redhat.com>
cc: Tommi Virtanen <tommi.virtanen@dreamhost.com>
Diffstat (limited to 'net/ceph/crypto.c')
| -rw-r--r-- | net/ceph/crypto.c | 24 |
1 files changed, 15 insertions, 9 deletions
diff --git a/net/ceph/crypto.c b/net/ceph/crypto.c index 6e7a236525b6..2c8078d990ee 100644 --- a/net/ceph/crypto.c +++ b/net/ceph/crypto.c @@ -423,8 +423,7 @@ int ceph_encrypt2(struct ceph_crypto_key *secret, void *dst, size_t *dst_len, } } -static int ceph_key_instantiate(struct key *key, - struct key_preparsed_payload *prep) +static int ceph_key_preparse(struct key_preparsed_payload *prep) { struct ceph_crypto_key *ckey; size_t datalen = prep->datalen; @@ -435,10 +434,6 @@ static int ceph_key_instantiate(struct key *key, if (datalen <= 0 || datalen > 32767 || !prep->data) goto err; - ret = key_payload_reserve(key, datalen); - if (ret < 0) - goto err; - ret = -ENOMEM; ckey = kmalloc(sizeof(*ckey), GFP_KERNEL); if (!ckey) @@ -450,7 +445,8 @@ static int ceph_key_instantiate(struct key *key, if (ret < 0) goto err_ckey; - key->payload.data = ckey; + prep->payload[0] = ckey; + prep->quotalen = datalen; return 0; err_ckey: @@ -459,12 +455,20 @@ err: return ret; } +static void ceph_key_free_preparse(struct key_preparsed_payload *prep) +{ + struct ceph_crypto_key *ckey = prep->payload[0]; + ceph_crypto_key_destroy(ckey); + kfree(ckey); +} + static int ceph_key_match(const struct key *key, const void *description) { return strcmp(key->description, description) == 0; } -static void ceph_key_destroy(struct key *key) { +static void ceph_key_destroy(struct key *key) +{ struct ceph_crypto_key *ckey = key->payload.data; ceph_crypto_key_destroy(ckey); @@ -473,7 +477,9 @@ static void ceph_key_destroy(struct key *key) { struct key_type key_type_ceph = { .name = "ceph", - .instantiate = ceph_key_instantiate, + .preparse = ceph_key_preparse, + .free_preparse = ceph_key_free_preparse, + .instantiate = generic_key_instantiate, .match = ceph_key_match, .destroy = ceph_key_destroy, }; |