On 2017-04-04 16:26, Paul Moore wrote:
On Tue, Apr 4, 2017 at 4:24 PM, Paul Moore <pmoore(a)redhat.com>
wrote:
> From: Paul Moore <paul(a)paul-moore.com>
>
> Commit 5b52330bbfe6 ("audit: fix auditd/kernel connection state
> tracking") make inlining audit_signal_info() a bit pointless as
> it was always calling into auditd_test_task() so let's remove the
> inline function in kernel/audit.h and convert __audit_signal_info()
> in kernel/auditsc.c into audit_signal_info().
>
> Signed-off-by: Paul Moore <paul(a)paul-moore.com>
> ---
> kernel/audit.h | 8 +-------
> kernel/auditsc.c | 25 +++++++++++++------------
> 2 files changed, 14 insertions(+), 19 deletions(-)
A revised version of the patch from last week.
If I don't see any negative comments in a day or two I'll send this to Linus.
Looks reasonable to me.
Reviewed-by: Richard Guy Briggs <rgb(a)redhat.com>
> diff --git a/kernel/audit.h b/kernel/audit.h
> index 0f1cf6d1878a..0d87f8ab8778 100644
> --- a/kernel/audit.h
> +++ b/kernel/audit.h
> @@ -333,13 +333,7 @@ extern u32 audit_sig_sid;
> extern int audit_filter(int msgtype, unsigned int listtype);
>
> #ifdef CONFIG_AUDITSYSCALL
> -extern int __audit_signal_info(int sig, struct task_struct *t);
> -static inline int audit_signal_info(int sig, struct task_struct *t)
> -{
> - if (auditd_test_task(t) || (audit_signals &&
!audit_dummy_context()))
> - return __audit_signal_info(sig, t);
> - return 0;
> -}
> +extern int audit_signal_info(int sig, struct task_struct *t);
> extern void audit_filter_inodes(struct task_struct *, struct audit_context *);
> extern struct list_head *audit_killed_trees(void);
> #else
> diff --git a/kernel/auditsc.c b/kernel/auditsc.c
> index e59ffc7fc522..1c2333155893 100644
> --- a/kernel/auditsc.c
> +++ b/kernel/auditsc.c
> @@ -2249,26 +2249,27 @@ void __audit_ptrace(struct task_struct *t)
> * If the audit subsystem is being terminated, record the task (pid)
> * and uid that is doing that.
> */
> -int __audit_signal_info(int sig, struct task_struct *t)
> +int audit_signal_info(int sig, struct task_struct *t)
> {
> struct audit_aux_data_pids *axp;
> struct task_struct *tsk = current;
> struct audit_context *ctx = tsk->audit_context;
> kuid_t uid = current_uid(), t_uid = task_uid(t);
>
> - if (auditd_test_task(t)) {
> - if (sig == SIGTERM || sig == SIGHUP || sig == SIGUSR1 || sig ==
SIGUSR2) {
> - audit_sig_pid = task_tgid_nr(tsk);
> - if (uid_valid(tsk->loginuid))
> - audit_sig_uid = tsk->loginuid;
> - else
> - audit_sig_uid = uid;
> - security_task_getsecid(tsk, &audit_sig_sid);
> - }
> - if (!audit_signals || audit_dummy_context())
> - return 0;
> + if (auditd_test_task(t) &&
> + (sig == SIGTERM || sig == SIGHUP ||
> + sig == SIGUSR1 || sig == SIGUSR2)) {
> + audit_sig_pid = task_tgid_nr(tsk);
> + if (uid_valid(tsk->loginuid))
> + audit_sig_uid = tsk->loginuid;
> + else
> + audit_sig_uid = uid;
> + security_task_getsecid(tsk, &audit_sig_sid);
> }
>
> + if (!audit_signals || audit_dummy_context())
> + return 0;
> +
> /* optimize the common case by putting first signal recipient directly
> * in audit_context */
> if (!ctx->target_pid) {
>
> --
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paul moore
www.paul-moore.com
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- RGB
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Richard Guy Briggs <rgb(a)redhat.com>
Sr. S/W Engineer, Kernel Security, Base Operating Systems
Remote, Ottawa, Red Hat Canada
IRC: rgb, SunRaycer
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