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/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <errno.h>
#include <sys/ptrace.h>
#include <sys/types.h>
#include <stdarg.h>
#include <libc-internal.h>
/* Perform process tracing functions. REQUEST is one of the values
in <sys/ptrace.h>, and determines the action to be taken.
For all requests except PTRACE_TRACEME, PID specifies the process to be
traced.
PID and the other arguments described above for the various requests should
appear (those that are used for the particular request) as:
pid_t PID, void *ADDR, int DATA, void *ADDR2
after PID. */
int
ptrace (enum __ptrace_request request, ...)
{
pid_t pid;
void *addr;
void *addr2;
int data;
va_list ap;
switch (request)
{
case PTRACE_TRACEME:
case PTRACE_CONT:
case PTRACE_KILL:
case PTRACE_SINGLESTEP:
case PTRACE_ATTACH:
case PTRACE_DETACH:
break;
case PTRACE_PEEKTEXT:
case PTRACE_PEEKDATA:
case PTRACE_PEEKUSER:
case PTRACE_GETREGS:
case PTRACE_SETREGS:
#ifdef PTRACE_GETFPREGS
case PTRACE_GETFPGEGS:
#endif
case PTRACE_SETFPREGS:
case PTRACE_GETFPAREGS:
case PTRACE_SETFPAREGS:
va_start (ap, request);
pid = va_arg (ap, pid_t);
addr = va_arg (ap, void *);
va_end (ap);
ignore_value (pid);
ignore_value (addr);
break;
case PTRACE_POKETEXT:
case PTRACE_POKEDATA:
case PTRACE_POKEUSER:
va_start (ap, request);
pid = va_arg (ap, pid_t);
addr = va_arg (ap, void *);
data = va_arg (ap, int);
va_end (ap);
ignore_value (pid);
ignore_value (addr);
ignore_value (data);
break;
case PTRACE_READDATA:
case PTRACE_WRITEDATA:
case PTRACE_READTEXT:
case PTRACE_WRITETEXT:
va_start (ap, request);
pid = va_arg (ap, pid_t);
addr = va_arg (ap, void *);
data = va_arg (ap, int);
addr2 = va_arg (ap, void *);
va_end (ap);
ignore_value (pid);
ignore_value (addr);
ignore_value (data);
ignore_value (addr2);
break;
default:
__set_errno (EINVAL);
return -1;
}
__set_errno (ENOSYS);
return -1;
}
stub_warning (ptrace)
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