>From 560fd1ebe616fd59c0abcaf86bec6109bfcd2141 Mon Sep 17 00:00:00 2001 From: Szabolcs Nagy Date: Sun, 3 Nov 2019 22:45:05 +0000 Subject: [PATCH 4/6] sys/ptrace.h: add PTRACE_GET_SYSCALL_INFO from linux v5.3 ptrace API to get details of the syscall the tracee is blocked in, see linux commit 201766a20e30f982ccfe36bebfad9602c3ff574a ptrace: add PTRACE_GET_SYSCALL_INFO request the align attribute was used to keep the layout the same across targets e.g. on m68k uint32_t is 2 byte aligned, this helps with compat ptrace. --- include/sys/ptrace.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/include/sys/ptrace.h b/include/sys/ptrace.h index 229e1f3d..2a868093 100644 --- a/include/sys/ptrace.h +++ b/include/sys/ptrace.h @@ -41,6 +41,7 @@ extern "C" { #define PTRACE_SETSIGMASK 0x420b #define PTRACE_SECCOMP_GET_FILTER 0x420c #define PTRACE_SECCOMP_GET_METADATA 0x420d +#define PTRACE_GET_SYSCALL_INFO 0x420e #define PT_READ_I PTRACE_PEEKTEXT #define PT_READ_D PTRACE_PEEKDATA @@ -88,6 +89,11 @@ extern "C" { #define PTRACE_PEEKSIGINFO_SHARED 1 +#define PTRACE_SYSCALL_INFO_NONE 0 +#define PTRACE_SYSCALL_INFO_ENTRY 1 +#define PTRACE_SYSCALL_INFO_EXIT 2 +#define PTRACE_SYSCALL_INFO_SECCOMP 3 + #include struct __ptrace_peeksiginfo_args { @@ -101,6 +107,28 @@ struct __ptrace_seccomp_metadata { uint64_t flags; }; +struct __ptrace_syscall_info { + uint8_t op; + uint32_t arch __attribute__((__aligned__(4))); + uint64_t instruction_pointer; + uint64_t stack_pointer; + union { + struct { + uint64_t nr; + uint64_t args[6]; + } entry; + struct { + int64_t rval; + uint8_t is_error; + } exit; + struct { + uint64_t nr; + uint64_t args[6]; + uint32_t ret_data; + } seccomp; + }; +}; + long ptrace(int, ...); #ifdef __cplusplus -- 2.23.0