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/*
* Copyright (C) 2011 by Nelson Elhage
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef PTRACE_H
#define PTRACE_H
#include <sys/ptrace.h>
#include <sys/types.h>
#include <sys/user.h>
#include <unistd.h>
/*
* See https://github.com/nelhage/reptyr/issues/25 and
* https://github.com/nelhage/reptyr/issues/26.
*
* Older glibc's don't define PTRACE_{SETOPTIONS,GETEVENTMSG}, (but do
* in linux/ptrace.h), but on newer systems sys/ptrace.h and
* linux/ptrace.h conflict. If we were using autoconf or something, we
* could potentially detect the right headers at configure-time, but
* I'd like to avoid adding autoconf. These numbers can't ever change
* for ABI-compatibility reasons, at least.
*/
#ifndef PTRACE_SETOPTIONS
#define PTRACE_SETOPTIONS 0x4200
#endif
#ifndef PTRACE_GETEVENTMSG
#define PTRACE_GETEVENTMSG 0x4201
#endif
enum child_state {
ptrace_detached = 0,
ptrace_at_syscall,
ptrace_after_syscall,
ptrace_running,
ptrace_stopped,
ptrace_exited
};
struct ptrace_child {
pid_t pid;
enum child_state state;
int personality;
int status;
int error;
unsigned long forked_pid;
unsigned long saved_syscall;
#ifdef __linux__
struct user user;
#endif
#ifdef __FreeBSD__
struct reg regs;
#endif
};
struct syscall_numbers {
long nr_mmap;
long nr_mmap2;
long nr_munmap;
long nr_getsid;
long nr_setsid;
long nr_setpgid;
long nr_fork;
long nr_wait4;
long nr_signal;
long nr_rt_sigaction;
long nr_open;
long nr_close;
long nr_ioctl;
long nr_dup2;
long nr_socket;
long nr_connect;
long nr_sendmsg;
long nr_socketcall;
};
typedef unsigned long child_addr_t;
int ptrace_wait(struct ptrace_child *child);
int ptrace_attach_child(struct ptrace_child *child, pid_t pid);
int ptrace_finish_attach(struct ptrace_child *child, pid_t pid);
int ptrace_detach_child(struct ptrace_child *child);
int ptrace_wait(struct ptrace_child *child);
int ptrace_advance_to_state(struct ptrace_child *child,
enum child_state desired);
int ptrace_save_regs(struct ptrace_child *child);
int ptrace_restore_regs(struct ptrace_child *child);
unsigned long ptrace_remote_syscall(struct ptrace_child *child,
unsigned long sysno,
unsigned long p0, unsigned long p1,
unsigned long p2, unsigned long p3,
unsigned long p4, unsigned long p5);
int ptrace_memcpy_to_child(struct ptrace_child *, child_addr_t, const void*, size_t);
int ptrace_memcpy_from_child(struct ptrace_child *, void*, child_addr_t, size_t);
struct syscall_numbers *ptrace_syscall_numbers(struct ptrace_child *child);
#endif
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