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authorDavid Howells <dhowells@redhat.com>2020-02-12 16:58:35 +0300
committerDavid Howells <dhowells@redhat.com>2020-05-19 17:08:23 +0300
commit344fa64ef8f6740e99b32ab788b6e3742d7284b3 (patch)
tree44170f4c17e4e98be3bec9972ef6fa6531a52582 /include/linux/lsm_hooks.h
parent0858caa419e6cf9d31e734d09d70b34f64443ef6 (diff)
downloadlinux-344fa64ef8f6740e99b32ab788b6e3742d7284b3.tar.xz
security: Add a hook for the point of notification insertion
Add a security hook that allows an LSM to rule on whether a notification message is allowed to be inserted into a particular watch queue. The hook is given the following information: (1) The credentials of the triggerer (which may be init_cred for a system notification, eg. a hardware error). (2) The credentials of the whoever set the watch. (3) The notification message. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: James Morris <jamorris@linux.microsoft.com> cc: Casey Schaufler <casey@schaufler-ca.com> cc: Stephen Smalley <sds@tycho.nsa.gov> cc: linux-security-module@vger.kernel.org
Diffstat (limited to 'include/linux/lsm_hooks.h')
-rw-r--r--include/linux/lsm_hooks.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/lsm_hooks.h b/include/linux/lsm_hooks.h
index 988ca0df7824..0b5e5769b836 100644
--- a/include/linux/lsm_hooks.h
+++ b/include/linux/lsm_hooks.h
@@ -1437,6 +1437,15 @@
* @ctx is a pointer in which to place the allocated security context.
* @ctxlen points to the place to put the length of @ctx.
*
+ * Security hooks for the general notification queue:
+ *
+ * @post_notification:
+ * Check to see if a watch notification can be posted to a particular
+ * queue.
+ * @w_cred: The credentials of the whoever set the watch.
+ * @cred: The event-triggerer's credentials
+ * @n: The notification being posted
+ *
* Security hooks for using the eBPF maps and programs functionalities through
* eBPF syscalls.
*