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| author | Paul Moore <paul@paul-moore.com> | 2017-09-01 09:44:34 -0400 |
|---|---|---|
| committer | Paul Moore <paul@paul-moore.com> | 2017-11-10 16:07:39 -0500 |
| commit | 173743dd99a49c956b124a74c8aacb0384739a4c (patch) | |
| tree | 1fccaffd2856fb56366dc02b7a943f86c04991cf /kernel/audit.c | |
| parent | 196a5085592c62ffa4eb739d7ce49c040c2953a1 (diff) | |
| download | lwn-173743dd99a49c956b124a74c8aacb0384739a4c.tar.gz lwn-173743dd99a49c956b124a74c8aacb0384739a4c.zip | |
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: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Diffstat (limited to 'kernel/audit.c')
| -rw-r--r-- | kernel/audit.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/kernel/audit.c b/kernel/audit.c index be1c28fd4d57..ec3d0802734d 100644 --- a/kernel/audit.c +++ b/kernel/audit.c @@ -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)"); |