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Commit 173743dd authored by Paul Moore's avatar Paul Moore
Browse files

audit: ensure that 'audit=1' actually enables audit for PID 1 



Prior to this patch we enabled audit in audit_init(), which is too
late for PID 1 as the standard initcalls are run after the PID 1 task
is forked.  This means that we never allocate an audit_context (see
audit_alloc()) for PID 1 and therefore miss a lot of audit events
generated by PID 1.

This patch enables audit as early as possible to help ensure that when
PID 1 is forked it can allocate an audit_context if required.

Reviewed-by: default avatarRichard Guy Briggs <rgb@redhat.com>
Signed-off-by: default avatarPaul Moore <paul@paul-moore.com>
parent 196a5085

kernel/audit.c

+5 −5
Original line number Diff line number Diff line
@@ -85,13 +85,13 @@ static int audit_initialized; 
#define AUDIT_OFF	0

#define AUDIT_ON	1

#define AUDIT_LOCKED	2

u32		audit_enabled;

u32		audit_ever_enabled;

u32		audit_enabled = AUDIT_OFF;

u32		audit_ever_enabled = !!AUDIT_OFF;



EXPORT_SYMBOL_GPL(audit_enabled);



/* Default state when kernel boots without any parameters. */

static u32	audit_default;

static u32	audit_default = AUDIT_OFF;



/* If auditing cannot proceed, audit_failure selects what happens. */

static u32	audit_failure = AUDIT_FAIL_PRINTK;
@@ -1549,8 +1549,6 @@ static int __init audit_init(void) 
	register_pernet_subsys(&audit_net_ops);



	audit_initialized = AUDIT_INITIALIZED;

	audit_enabled = audit_default;

	audit_ever_enabled |= !!audit_default;



	kauditd_task = kthread_run(kauditd_thread, NULL, "kauditd");

	if (IS_ERR(kauditd_task)) {
@@ -1572,6 +1570,8 @@ static int __init audit_enable(char *str) 
	audit_default = !!simple_strtol(str, NULL, 0);

	if (!audit_default)

		audit_initialized = AUDIT_DISABLED;

	audit_enabled = audit_default;

	audit_ever_enabled = !!audit_enabled;



	pr_info("%s\n", audit_default ?

		"enabled (after initialization)" : "disabled (until reboot)");