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93995795 RM |
1 | /* Copyright (C) 1995, 1996 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. | |
3 | ||
4 | The GNU C Library is free software; you can redistribute it and/or | |
5 | modify it under the terms of the GNU Library General Public License as | |
6 | published by the Free Software Foundation; either version 2 of the | |
7 | License, or (at your option) any later version. | |
8 | ||
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | Library General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Library General Public | |
15 | License along with the GNU C Library; see the file COPYING.LIB. If | |
16 | not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
17 | Boston, MA 02111-1307, USA. */ | |
18 | ||
19 | #include <errno.h> | |
20 | #include <sys/ptrace.h> | |
21 | #include <sys/syscall.h> | |
22 | ||
23 | int | |
24 | ptrace (int request, int pid, int addr, int data) | |
25 | { | |
26 | long int ret; | |
27 | long int res; | |
28 | if (request > 0 && request < 4) | |
29 | (long int *) data = &ret; | |
30 | ||
31 | res = __syscall_ptrace (request, pid, addr, data); | |
32 | ||
33 | if (res >= 0) | |
34 | { | |
35 | if (request > 0 && request < 4) | |
36 | { | |
37 | errno = 0; | |
38 | return (ret); | |
39 | } | |
40 | return (int) res; | |
41 | } | |
42 | ||
43 | errno = -res; | |
44 | return -1; | |
45 | } |