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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.
This commit is contained in:
Szabolcs Nagy 2019-11-03 22:45:05 +00:00 committed by Rich Felker
parent 06636c5542
commit f291c09ec9
1 changed files with 28 additions and 0 deletions
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28
include/sys/ptrace.h
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@ -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 <bits/ptrace.h>
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