1 /*
2 * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
3 *
4 * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
5 */
6
7 #include <sys/syscall.h>
8 #include <sys/types.h>
9 #include <sys/ptrace.h>
10 #include <stdarg.h>
11
12 #if defined __NR_ptrace && defined __USE_BSD && defined __USE_MISC
13 #define __NR___syscall_ptrace __NR_ptrace
14
_syscall4(long,__syscall_ptrace,enum __ptrace_request,request,__kernel_pid_t,pid,void *,addr,void *,data)15 static __inline__ _syscall4(long, __syscall_ptrace, enum __ptrace_request, request,
16 __kernel_pid_t, pid, void*, addr, void*, data)
17
18 long int
19 ptrace (enum __ptrace_request request, ...)
20 {
21 long int res, ret;
22 va_list ap;
23 pid_t pid;
24 void *addr, *data;
25
26 va_start (ap, request);
27 pid = va_arg (ap, pid_t);
28 addr = va_arg (ap, void *);
29 data = va_arg (ap, void *);
30 va_end (ap);
31
32 if (request > 0 && request < 4)
33 data = &ret;
34
35 res = __syscall_ptrace(request, pid, addr, data);
36 if (res >= 0 && request > 0 && request < 4) {
37 __set_errno(0);
38 return ret;
39 }
40
41 return res;
42 }
43 #endif
44