mirror of
https://sourceware.org/git/glibc.git
synced 2025-11-03 20:53:13 +03:00
127 lines
3.2 KiB
C
127 lines
3.2 KiB
C
/* Copyright (C) 1995-1998,2000,2003,2006 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <errno.h>
|
|
#include <sys/types.h>
|
|
#include <sys/ptrace.h>
|
|
#include <sys/user.h>
|
|
#include <stdarg.h>
|
|
#include <signal.h>
|
|
|
|
#include <sysdep.h>
|
|
#include <sys/syscall.h>
|
|
#include <bp-checks.h>
|
|
|
|
long int
|
|
ptrace (enum __ptrace_request request, ...)
|
|
{
|
|
long int res, ret;
|
|
va_list ap;
|
|
pid_t pid;
|
|
void *addr, *data;
|
|
|
|
va_start (ap, request);
|
|
pid = va_arg (ap, pid_t);
|
|
addr = va_arg (ap, void *);
|
|
data = va_arg (ap, void *);
|
|
va_end (ap);
|
|
|
|
if (request > 0 && request < 4)
|
|
data = &ret;
|
|
|
|
#if __BOUNDED_POINTERS__
|
|
switch (request)
|
|
{
|
|
case PTRACE_PEEKTEXT:
|
|
case PTRACE_PEEKDATA:
|
|
case PTRACE_PEEKUSER:
|
|
case PTRACE_POKETEXT:
|
|
case PTRACE_POKEDATA:
|
|
case PTRACE_POKEUSER:
|
|
(void) CHECK_1 ((int *) addr);
|
|
(void) CHECK_1 ((int *) data);
|
|
break;
|
|
|
|
case PTRACE_GETREGS:
|
|
case PTRACE_SETREGS:
|
|
#ifdef __i386__
|
|
(void) CHECK_1 ((struct user_regs_struct *) data);
|
|
#else
|
|
/* We don't know the size of data, so the best we can do is ensure
|
|
that `data' is valid for at least one word. */
|
|
(void) CHECK_1 ((int *) data);
|
|
#endif
|
|
break;
|
|
|
|
case PTRACE_GETFPREGS:
|
|
case PTRACE_SETFPREGS:
|
|
#ifdef __i386__
|
|
(void) CHECK_1 ((struct user_fpregs_struct *) data);
|
|
#else
|
|
/* We don't know the size of data, so the best we can do is ensure
|
|
that `data' is valid for at least one word. */
|
|
(void) CHECK_1 ((int *) data);
|
|
#endif
|
|
break;
|
|
|
|
case PTRACE_GETFPXREGS:
|
|
case PTRACE_SETFPXREGS:
|
|
#ifdef __i386__
|
|
(void) CHECK_1 ((struct user_fpxregs_struct *) data);
|
|
#else
|
|
/* We don't know the size of data, so the best we can do is ensure
|
|
that `data' is valid for at least one word. */
|
|
(void) CHECK_1 ((int *) data);
|
|
#endif
|
|
break;
|
|
|
|
case PTRACE_GETSIGINFO:
|
|
case PTRACE_SETSIGINFO:
|
|
(void) CHECK_1 ((siginfo_t *) data);
|
|
break;
|
|
|
|
case PTRACE_GETEVENTMSG:
|
|
(void) CHECK_1 ((unsigned long *) data);
|
|
break;
|
|
|
|
case PTRACE_SETOPTIONS:
|
|
(void) CHECK_1 ((long *) data);
|
|
break;
|
|
|
|
case PTRACE_TRACEME:
|
|
case PTRACE_CONT:
|
|
case PTRACE_KILL:
|
|
case PTRACE_SINGLESTEP:
|
|
case PTRACE_ATTACH:
|
|
case PTRACE_DETACH:
|
|
case PTRACE_SYSCALL:
|
|
/* Neither `data' nor `addr' needs any checks. */
|
|
break;
|
|
};
|
|
#endif
|
|
|
|
res = INLINE_SYSCALL (ptrace, 4, request, pid,
|
|
__ptrvalue (addr), __ptrvalue (data));
|
|
if (res >= 0 && request > 0 && request < 4)
|
|
{
|
|
__set_errno (0);
|
|
return ret;
|
|
}
|
|
|
|
return res;
|
|
}
|