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authorDavid Howells <dhowells@redhat.com>2005-06-23 22:00:51 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-06-24 00:05:18 -0700
commit7888e7ff4ee579442128d7d12a9c9dbf2cf7de6a (patch)
treeabe428ecb966e1dae07fce17f38e3e0c0ab4f134 /include/linux/key.h
parent[PATCH] keys: Discard key spinlock and use RCU for key payload (diff)
downloadlinux-dev-7888e7ff4ee579442128d7d12a9c9dbf2cf7de6a.tar.xz
linux-dev-7888e7ff4ee579442128d7d12a9c9dbf2cf7de6a.zip
[PATCH] Keys: Pass session keyring to call_usermodehelper()
The attached patch makes it possible to pass a session keyring through to the process spawned by call_usermodehelper(). This allows patch 3/3 to pass an authorisation key through to /sbin/request-key, thus permitting better access controls when doing just-in-time key creation. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/key.h')
-rw-r--r--include/linux/key.h10
1 files changed, 9 insertions, 1 deletions
diff --git a/include/linux/key.h b/include/linux/key.h
index 2c24ffaca86f..2bfbf88d2740 100644
--- a/include/linux/key.h
+++ b/include/linux/key.h
@@ -273,14 +273,22 @@ extern void key_fsuid_changed(struct task_struct *tsk);
extern void key_fsgid_changed(struct task_struct *tsk);
extern void key_init(void);
+#define __install_session_keyring(tsk, keyring) \
+({ \
+ struct key *old_session = tsk->signal->session_keyring; \
+ tsk->signal->session_keyring = keyring; \
+ old_session; \
+})
+
#else /* CONFIG_KEYS */
#define key_validate(k) 0
#define key_serial(k) 0
-#define key_get(k) NULL
+#define key_get(k) ({ NULL; })
#define key_put(k) do { } while(0)
#define alloc_uid_keyring(u) 0
#define switch_uid_keyring(u) do { } while(0)
+#define __install_session_keyring(t, k) ({ NULL; })
#define copy_keys(f,t) 0
#define copy_thread_group_keys(t) 0
#define exit_keys(t) do { } while(0)