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1 | /* Copyright (C) 1995-2019 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 Lesser General Public | |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the 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 | Lesser General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Lesser General Public | |
15 | License along with the GNU C Library; if not, see | |
16 | <https://www.gnu.org/licenses/>. */ | |
17 | ||
18 | #include <errno.h> | |
19 | #include <sys/types.h> | |
20 | #include <sys/ptrace.h> | |
21 | #include <sys/user.h> | |
22 | #include <stdarg.h> | |
23 | #include <signal.h> | |
24 | ||
25 | #include <sysdep.h> | |
26 | #include <sys/syscall.h> | |
27 | ||
28 | long int | |
29 | ptrace (enum __ptrace_request request, ...) | |
30 | { | |
31 | long int res, ret; | |
32 | va_list ap; | |
33 | pid_t pid; | |
34 | void *addr, *data; | |
35 | ||
36 | va_start (ap, request); | |
37 | pid = va_arg (ap, pid_t); | |
38 | addr = va_arg (ap, void *); | |
39 | data = va_arg (ap, void *); | |
40 | va_end (ap); | |
41 | ||
42 | if (request > 0 && request < 4) | |
43 | data = &ret; | |
44 | ||
45 | res = INLINE_SYSCALL (ptrace, 4, request, pid, addr, data); | |
46 | if (res >= 0 && request > 0 && request < 4) | |
47 | { | |
48 | __set_errno (0); | |
49 | return ret; | |
50 | } | |
51 | ||
52 | return res; | |
53 | } |