accept4: don't fall back to accept if we got unknown flags

[musl] / include / sys / ptrace.h

diff --git a/include/sys/ptrace.h b/include/sys/ptrace.h
index 2a86809..c72e3c0 100644 (file)
--- a/include/sys/ptrace.h
+++ b/include/sys/ptrace.h
@@ -42,6 +42,7 @@ extern "C" {
 #define PTRACE_SECCOMP_GET_FILTER 0x420c
 #define PTRACE_SECCOMP_GET_METADATA 0x420d
 #define PTRACE_GET_SYSCALL_INFO 0x420e
+#define PTRACE_GET_RSEQ_CONFIGURATION  0x420f
 
 #define PT_READ_I PTRACE_PEEKTEXT
 #define PT_READ_D PTRACE_PEEKDATA
@@ -109,7 +110,8 @@ struct __ptrace_seccomp_metadata {
 
 struct __ptrace_syscall_info {
        uint8_t op;
-       uint32_t arch __attribute__((__aligned__(4)));
+       uint8_t __pad[3];
+       uint32_t arch;
        uint64_t instruction_pointer;
        uint64_t stack_pointer;
        union {
@@ -129,6 +131,14 @@ struct __ptrace_syscall_info {
        };
 };
 
+struct __ptrace_rseq_configuration {
+       uint64_t rseq_abi_pointer;
+       uint32_t rseq_abi_size;
+       uint32_t signature;
+       uint32_t flags;
+       uint32_t pad;
+};
+
 long ptrace(int, ...);
 
 #ifdef __cplusplus