diff options
| author | Eric W. Biederman | 2012-02-08 07:53:04 -0800 |
|---|---|---|
| committer | Eric W. Biederman | 2012-09-13 18:28:02 -0700 |
| commit | 9a56c2db49e7349c7963f0ce66c1ef578d44ebd3 (patch) | |
| tree | de29b56483bb00efabca3ba35c7001cab2aab7be /security/keys/process_keys.c | |
| parent | 5fce5e0bbd44263c36f58ad1113b599d06ed1978 (diff) | |
userns: Convert security/keys to the new userns infrastructure
- Replace key_user ->user_ns equality checks with kuid_has_mapping checks.
- Use from_kuid to generate key descriptions
- Use kuid_t and kgid_t and the associated helpers instead of uid_t and gid_t
- Avoid potential problems with file descriptor passing by displaying
keys in the user namespace of the opener of key status proc files.
Cc: linux-security-module@vger.kernel.org
Cc: keyrings@linux-nfs.org
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Diffstat (limited to 'security/keys/process_keys.c')
| -rw-r--r-- | security/keys/process_keys.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/security/keys/process_keys.c b/security/keys/process_keys.c index 54339cfd6734..a58f712605d8 100644 --- a/security/keys/process_keys.c +++ b/security/keys/process_keys.c @@ -34,8 +34,7 @@ struct key_user root_key_user = { .lock = __SPIN_LOCK_UNLOCKED(root_key_user.lock), .nkeys = ATOMIC_INIT(2), .nikeys = ATOMIC_INIT(2), - .uid = 0, - .user_ns = &init_user_ns, + .uid = GLOBAL_ROOT_UID, }; /* @@ -48,11 +47,13 @@ int install_user_keyrings(void) struct key *uid_keyring, *session_keyring; char buf[20]; int ret; + uid_t uid; cred = current_cred(); user = cred->user; + uid = from_kuid(cred->user_ns, user->uid); - kenter("%p{%u}", user, user->uid); + kenter("%p{%u}", user, uid); if (user->uid_keyring) { kleave(" = 0 [exist]"); @@ -67,11 +68,11 @@ int install_user_keyrings(void) * - there may be one in existence already as it may have been * pinned by a session, but the user_struct pointing to it * may have been destroyed by setuid */ - sprintf(buf, "_uid.%u", user->uid); + sprintf(buf, "_uid.%u", uid); uid_keyring = find_keyring_by_name(buf, true); if (IS_ERR(uid_keyring)) { - uid_keyring = keyring_alloc(buf, user->uid, (gid_t) -1, + uid_keyring = keyring_alloc(buf, user->uid, INVALID_GID, cred, KEY_ALLOC_IN_QUOTA, NULL); if (IS_ERR(uid_keyring)) { @@ -82,12 +83,12 @@ int install_user_keyrings(void) /* get a default session keyring (which might also exist * already) */ - sprintf(buf, "_uid_ses.%u", user->uid); + sprintf(buf, "_uid_ses.%u", uid); session_keyring = find_keyring_by_name(buf, true); if (IS_ERR(session_keyring)) { session_keyring = - keyring_alloc(buf, user->uid, (gid_t) -1, + keyring_alloc(buf, user->uid, INVALID_GID, cred, KEY_ALLOC_IN_QUOTA, NULL); if (IS_ERR(session_keyring)) { ret = PTR_ERR(session_keyring); |