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46 lines
1.3 KiB
C
46 lines
1.3 KiB
C
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/* Copyright (C) 1995, 1996 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
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not, 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/ptrace.h>
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#include <sys/syscall.h>
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int
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ptrace (int request, int pid, int addr, int data)
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{
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long int ret;
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long int res;
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if (request > 0 && request < 4)
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(long int *) data = &ret;
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res = __syscall_ptrace (request, pid, addr, data);
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if (res >= 0)
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{
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if (request > 0 && request < 4)
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{
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errno = 0;
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return (ret);
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}
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return (int) res;
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}
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errno = -res;
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return -1;
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}
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