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| author | David Woodhouse <dwmw2@shinybook.infradead.org> | 2005-06-22 15:56:47 +0200 |
|---|---|---|
| committer | David Woodhouse <dwmw2@shinybook.infradead.org> | 2005-06-22 15:56:47 +0200 |
| commit | 4a4cd633b575609b741a1de7837223a2d9e1c34c (patch) | |
| tree | f4c3a6beb6a587598193053240f3e3f82885f1e3 /kernel/auditsc.c | |
| parent | AUDIT: Spawn kernel thread to list filter rules. (diff) | |
| download | linux-4a4cd633b575609b741a1de7837223a2d9e1c34c.tar.xz linux-4a4cd633b575609b741a1de7837223a2d9e1c34c.zip | |
AUDIT: Optimise the audit-disabled case for discarding user messages
Also exempt USER_AVC message from being discarded to preserve
existing behaviour for SE Linux.
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Diffstat (limited to '')
| -rw-r--r-- | kernel/auditsc.c | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/kernel/auditsc.c b/kernel/auditsc.c index cb8a44945157..fc858b0c044a 100644 --- a/kernel/auditsc.c +++ b/kernel/auditsc.c @@ -530,22 +530,33 @@ static enum audit_state audit_filter_syscall(struct task_struct *tsk, return AUDIT_BUILD_CONTEXT; } -int audit_filter_user(struct task_struct *tsk, int type) +int audit_filter_user(int pid, int type) { + struct task_struct *tsk; struct audit_entry *e; enum audit_state state; + int ret = 1; - if (audit_pid && tsk->pid == audit_pid) - return AUDIT_DISABLED; + read_lock(&tasklist_lock); + tsk = find_task_by_pid(pid); + if (tsk) + get_task_struct(tsk); + read_unlock(&tasklist_lock); + + if (!tsk) + return -ESRCH; rcu_read_lock(); list_for_each_entry_rcu(e, &audit_filter_list[AUDIT_FILTER_USER], list) { if (audit_filter_rules(tsk, &e->rule, NULL, &state)) { - rcu_read_unlock(); - return state != AUDIT_DISABLED; + if (state == AUDIT_DISABLED) + ret = 0; + break; } } rcu_read_unlock(); + put_task_struct(tsk); + return 1; /* Audit by default */ } |