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[/] [or1k/] [trunk/] [linux/] [uClibc/] [libc/] [sysdeps/] [linux/] [common/] [ptrace.c] - Blame information for rev 1765

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1 1325 phoenix
/* Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
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   This file is part of the GNU C Library.
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   The GNU C Library is free software; you can redistribute it and/or
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   modify it under the terms of the GNU Library General Public License as
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   published by the Free Software Foundation; either version 2 of the
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   License, or (at your option) any later version.
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   The GNU C Library is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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   Library General Public License for more details.
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   You should have received a copy of the GNU Library General Public
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   License along with the GNU C Library; see the file COPYING.LIB.  If not,
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   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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   Boston, MA 02111-1307, USA.  */
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/ptrace.h>
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#include <sys/syscall.h>
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#include <stdarg.h>
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#define __NR___syscall_ptrace __NR_ptrace
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static _syscall4(long, __syscall_ptrace, enum __ptrace_request, request,
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                __kernel_pid_t, pid, void*, addr, void*, data);
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long int
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ptrace (enum __ptrace_request request, ...)
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{
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  long int res, ret;
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  va_list ap;
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  pid_t pid;
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  void *addr, *data;
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  va_start (ap, request);
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  pid = va_arg (ap, pid_t);
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  addr = va_arg (ap, void *);
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  data = va_arg (ap, void *);
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  va_end (ap);
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  if (request > 0 && request < 4)
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    data = &ret;
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  res = __syscall_ptrace(request, pid, addr, data);
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  if (res >= 0 && request > 0 && request < 4) {
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      __set_errno(0);
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      return ret;
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    }
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  return res;
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}

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