mirror of https://github.com/hak5/openwrt.git
35 lines
1.2 KiB
Diff
35 lines
1.2 KiB
Diff
--- a/kernel/seccomp.c
|
|
+++ b/kernel/seccomp.c
|
|
@@ -614,6 +614,7 @@ int __secure_computing(void)
|
|
#ifdef CONFIG_SECCOMP_FILTER
|
|
static u32 __seccomp_phase1_filter(int this_syscall, struct seccomp_data *sd)
|
|
{
|
|
+ char name[sizeof(current->comm)];
|
|
u32 filter_ret, action;
|
|
int data;
|
|
|
|
@@ -644,6 +645,13 @@ static u32 __seccomp_phase1_filter(int t
|
|
case SECCOMP_RET_TRACE:
|
|
return filter_ret; /* Save the rest for phase 2. */
|
|
|
|
+ case SECCOMP_RET_LOG:
|
|
+ get_task_comm(name, current);
|
|
+ pr_err_ratelimited("seccomp: %s [%u] tried to call non-whitelisted syscall: %d\n", name, current->pid, this_syscall);
|
|
+ syscall_set_return_value(current, task_pt_regs(current),
|
|
+ -data, 0);
|
|
+ goto skip;
|
|
+
|
|
case SECCOMP_RET_ALLOW:
|
|
return SECCOMP_PHASE1_OK;
|
|
|
|
--- a/include/uapi/linux/seccomp.h
|
|
+++ b/include/uapi/linux/seccomp.h
|
|
@@ -28,6 +28,7 @@
|
|
#define SECCOMP_RET_KILL 0x00000000U /* kill the task immediately */
|
|
#define SECCOMP_RET_TRAP 0x00030000U /* disallow and force a SIGSYS */
|
|
#define SECCOMP_RET_ERRNO 0x00050000U /* returns an errno */
|
|
+#define SECCOMP_RET_LOG 0x00070000U /* allow + logline */
|
|
#define SECCOMP_RET_TRACE 0x7ff00000U /* pass to a tracer or disallow */
|
|
#define SECCOMP_RET_ALLOW 0x7fff0000U /* allow */
|
|
|