trace: fix build on aarch64

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

diff --git a/trace/trace.c b/trace/trace.c
index 2fd27b86348df7146d2be20b3f7a35f98e9dffe6..dab92e06c4275e35e2f0dee2d0f16b79ad0b29a9 100644 (file)
--- a/trace/trace.c
+++ b/trace/trace.c
@@ -244,12 +244,19 @@ static void tracer_cb(struct uloop_process *c, int ret)
                } else if ((ret >> 16) == PTRACE_EVENT_STOP) {
                        /* Nothing special to do here */
                } else if ((ret >> 8) == (SIGTRAP | (PTRACE_EVENT_SECCOMP << 8))) {
+#ifdef __aarch64__
+                       int syscall = -1;
+                       struct ptrace_syscall_info ptsi = {.op=PTRACE_SYSCALL_INFO_SECCOMP};
+                       if (ptrace(PTRACE_GET_SYSCALL_INFO, c->pid, sizeof(ptsi), &ptsi) != -1)
+                               syscall = ptsi.entry.nr;
+#else
                        int syscall = ptrace(PTRACE_PEEKUSER, c->pid, reg_syscall_nr);
 #if defined(__arm__)
                        ptrace(PTRACE_SET_SYSCALL, c->pid, 0, -1);
                        ptrace(PTRACE_POKEUSER, c->pid, reg_retval_nr, -ENOSYS);
 #else
                        ptrace(PTRACE_POKEUSER, c->pid, reg_syscall_nr, -1);
+#endif
 #endif
                        report_seccomp_vialation(c->pid, syscall);
                } else {