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| author | Richard Guy Briggs <rgb@redhat.com> | 2016-04-21 14:14:01 -0400 |
|---|---|---|
| committer | Paul Moore <paul@paul-moore.com> | 2016-04-26 17:19:16 -0400 |
| commit | db0a6fb5d97afe01fd9c47d37c6daa82d4d4001d (patch) | |
| tree | 872477fc77baf62efbcd876014557bca67684b0e /kernel/auditsc.c | |
| parent | 7ffb8e317bae03b8ee5bdcec93dc3723be945e9b (diff) | |
| download | lwn-db0a6fb5d97afe01fd9c47d37c6daa82d4d4001d.tar.gz lwn-db0a6fb5d97afe01fd9c47d37c6daa82d4d4001d.zip | |
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.c | 8 |
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); } |