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author | David Howells <dhowells@redhat.com> | 2015-10-21 14:04:48 +0100 |
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committer | David Howells <dhowells@redhat.com> | 2015-10-21 15:18:36 +0100 |
commit | 146aa8b1453bd8f1ff2304ffb71b4ee0eb9acdcc (patch) | |
tree | a89ef2cd2e8029b0c09a58739cca0e7e2e68f4db /fs/cifs/cifsacl.c | |
parent | 4adc605edc5f744dcf432241b5996ff6a13d868c (diff) | |
download | linux-stable-146aa8b1453bd8f1ff2304ffb71b4ee0eb9acdcc.tar.gz linux-stable-146aa8b1453bd8f1ff2304ffb71b4ee0eb9acdcc.tar.bz2 linux-stable-146aa8b1453bd8f1ff2304ffb71b4ee0eb9acdcc.zip |
KEYS: Merge the type-specific data with the payload data
Merge the type-specific data with the payload data into one four-word chunk
as it seems pointless to keep them separate.
Use user_key_payload() for accessing the payloads of overloaded
user-defined keys.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: linux-cifs@vger.kernel.org
cc: ecryptfs@vger.kernel.org
cc: linux-ext4@vger.kernel.org
cc: linux-f2fs-devel@lists.sourceforge.net
cc: linux-nfs@vger.kernel.org
cc: ceph-devel@vger.kernel.org
cc: linux-ima-devel@lists.sourceforge.net
Diffstat (limited to 'fs/cifs/cifsacl.c')
-rw-r--r-- | fs/cifs/cifsacl.c | 25 |
1 files changed, 12 insertions, 13 deletions
diff --git a/fs/cifs/cifsacl.c b/fs/cifs/cifsacl.c index 1ea780bc6376..3f93125916bf 100644 --- a/fs/cifs/cifsacl.c +++ b/fs/cifs/cifsacl.c @@ -58,16 +58,15 @@ cifs_idmap_key_instantiate(struct key *key, struct key_preparsed_payload *prep) * dereference payload.data! */ if (prep->datalen <= sizeof(key->payload)) { - key->payload.value = 0; - memcpy(&key->payload.value, prep->data, prep->datalen); - key->datalen = prep->datalen; - return 0; + key->payload.data[0] = NULL; + memcpy(&key->payload, prep->data, prep->datalen); + } else { + payload = kmemdup(prep->data, prep->datalen, GFP_KERNEL); + if (!payload) + return -ENOMEM; + key->payload.data[0] = payload; } - payload = kmemdup(prep->data, prep->datalen, GFP_KERNEL); - if (!payload) - return -ENOMEM; - key->payload.data = payload; key->datalen = prep->datalen; return 0; } @@ -76,7 +75,7 @@ static inline void cifs_idmap_key_destroy(struct key *key) { if (key->datalen > sizeof(key->payload)) - kfree(key->payload.data); + kfree(key->payload.data[0]); } static struct key_type cifs_idmap_key_type = { @@ -233,8 +232,8 @@ id_to_sid(unsigned int cid, uint sidtype, struct cifs_sid *ssid) * it could be. */ ksid = sidkey->datalen <= sizeof(sidkey->payload) ? - (struct cifs_sid *)&sidkey->payload.value : - (struct cifs_sid *)sidkey->payload.data; + (struct cifs_sid *)&sidkey->payload : + (struct cifs_sid *)sidkey->payload.data[0]; ksid_size = CIFS_SID_BASE_SIZE + (ksid->num_subauth * sizeof(__le32)); if (ksid_size > sidkey->datalen) { @@ -307,14 +306,14 @@ sid_to_id(struct cifs_sb_info *cifs_sb, struct cifs_sid *psid, if (sidtype == SIDOWNER) { kuid_t uid; uid_t id; - memcpy(&id, &sidkey->payload.value, sizeof(uid_t)); + memcpy(&id, &sidkey->payload.data[0], sizeof(uid_t)); uid = make_kuid(&init_user_ns, id); if (uid_valid(uid)) fuid = uid; } else { kgid_t gid; gid_t id; - memcpy(&id, &sidkey->payload.value, sizeof(gid_t)); + memcpy(&id, &sidkey->payload.data[0], sizeof(gid_t)); gid = make_kgid(&init_user_ns, id); if (gid_valid(gid)) fgid = gid; |