diff options
author | David Howells <dhowells@redhat.com> | 2020-02-12 16:58:35 +0300 |
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committer | David Howells <dhowells@redhat.com> | 2020-05-19 17:08:23 +0300 |
commit | 344fa64ef8f6740e99b32ab788b6e3742d7284b3 (patch) | |
tree | 44170f4c17e4e98be3bec9972ef6fa6531a52582 /include/linux/security.h | |
parent | 0858caa419e6cf9d31e734d09d70b34f64443ef6 (diff) | |
download | linux-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/security.h')
-rw-r--r-- | include/linux/security.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/linux/security.h b/include/linux/security.h index a8d9310472df..9a5d12ab491b 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -56,6 +56,8 @@ struct mm_struct; struct fs_context; struct fs_parameter; enum fs_value_type; +struct watch; +struct watch_notification; /* Default (no) options for the capable function */ #define CAP_OPT_NONE 0x0 @@ -1275,6 +1277,19 @@ static inline int security_locked_down(enum lockdown_reason what) } #endif /* CONFIG_SECURITY */ +#if defined(CONFIG_SECURITY) && defined(CONFIG_WATCH_QUEUE) +int security_post_notification(const struct cred *w_cred, + const struct cred *cred, + struct watch_notification *n); +#else +static inline int security_post_notification(const struct cred *w_cred, + const struct cred *cred, + struct watch_notification *n) +{ + return 0; +} +#endif + #ifdef CONFIG_SECURITY_NETWORK int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); |