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authorRichard Guy Briggs <rgb@redhat.com>2016-04-21 14:14:01 -0400
committerPaul Moore <paul@paul-moore.com>2016-04-26 17:19:16 -0400
commitdb0a6fb5d97afe01fd9c47d37c6daa82d4d4001d (patch)
tree872477fc77baf62efbcd876014557bca67684b0e /kernel/auditsc.c
parent7ffb8e317bae03b8ee5bdcec93dc3723be945e9b (diff)
downloadlinux-sh-db0a6fb5d97afe01fd9c47d37c6daa82d4d4001d.tar.gz
audit: add tty field to LOGIN event
The tty field was missing from AUDIT_LOGIN events. Refactor code to create a new function audit_get_tty(), using it to replace the call in audit_log_task_info() and to add it to audit_log_set_loginuid(). Lock and bump the kref to protect it, adding audit_put_tty() alias to decrement it. Signed-off-by: Richard Guy Briggs <rgb@redhat.com> Signed-off-by: Paul Moore <paul@paul-moore.com>
Diffstat (limited to 'kernel/auditsc.c')
-rw-r--r--kernel/auditsc.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index 195ffaee50b9..71e14d836e69 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -1980,6 +1980,7 @@ static void audit_log_set_loginuid(kuid_t koldloginuid, kuid_t kloginuid,
{
struct audit_buffer *ab;
uid_t uid, oldloginuid, loginuid;
+ struct tty_struct *tty;
if (!audit_enabled)
return;
@@ -1987,14 +1988,17 @@ static void audit_log_set_loginuid(kuid_t koldloginuid, kuid_t kloginuid,
uid = from_kuid(&init_user_ns, task_uid(current));
oldloginuid = from_kuid(&init_user_ns, koldloginuid);
loginuid = from_kuid(&init_user_ns, kloginuid),
+ tty = audit_get_tty(current);
ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_LOGIN);
if (!ab)
return;
audit_log_format(ab, "pid=%d uid=%u", task_pid_nr(current), uid);
audit_log_task_context(ab);
- audit_log_format(ab, " old-auid=%u auid=%u old-ses=%u ses=%u res=%d",
- oldloginuid, loginuid, oldsessionid, sessionid, !rc);
+ audit_log_format(ab, " old-auid=%u auid=%u tty=%s old-ses=%u ses=%u res=%d",
+ oldloginuid, loginuid, tty ? tty_name(tty) : "(none)",
+ oldsessionid, sessionid, !rc);
+ audit_put_tty(tty);
audit_log_end(ab);
}