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[PATCH] selinux: add hooks for key subsystem

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Introduce SELinux hooks to support the access key retention subsystem
within the kernel.  Incorporate new flask headers from a modified version
of the SELinux reference policy, with support for the new security class
representing retained keys.  Extend the "key_alloc" security hook with a
task parameter representing the intended ownership context for the key
being allocated.  Attach security information to root's default keyrings
within the SELinux initialization routine.

Has passed David's testsuite.

Signed-off-by: Michael LeMay <mdlemay@epoch.ncsc.mil>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
Acked-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Michael LeMay 2006-06-22 14:47:17 -07:00 • committed by Linus Torvalds
parent f893afbe12
commit d720024e94
16 changed files with 155 additions and 27 deletions
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8
security/keys/key.c
View file

@ -247,8 +247,8 @@ static inline void key_alloc_serial(struct key *key)
* instantiate the key or discard it before returning
*/
struct key *key_alloc(struct key_type *type, const char *desc,
uid_t uid, gid_t gid, key_perm_t perm,
int not_in_quota)
uid_t uid, gid_t gid, struct task_struct *ctx,
key_perm_t perm, int not_in_quota)
{
struct key_user *user = NULL;
struct key *key;
@ -318,7 +318,7 @@ struct key *key_alloc(struct key_type *type, const char *desc,
#endif
/* let the security module know about the key */
ret = security_key_alloc(key);
ret = security_key_alloc(key, ctx);
if (ret < 0)
goto security_error;
@ -822,7 +822,7 @@ key_ref_t key_create_or_update(key_ref_t keyring_ref,
/* allocate a new key */
key = key_alloc(ktype, description, current->fsuid, current->fsgid,
perm, not_in_quota);
current, perm, not_in_quota);
if (IS_ERR(key)) {
key_ref = ERR_PTR(PTR_ERR(key));
goto error_3;