/*
* Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <sched.h>
#include <errno.h>
#include <sys/wait.h>
#include <signal.h>
#include "kern_util.h"
#include "user.h"
#include "ptrace_user.h"
#include "os.h"
void do_exec(int old_pid, int new_pid)
{
unsigned long regs[FRAME_SIZE];
int err;
if((ptrace(PTRACE_ATTACH, new_pid, 0, 0) < 0) ||
(ptrace(PTRACE_CONT, new_pid, 0, 0) < 0))
tracer_panic("do_exec failed to attach proc - errno = %d",
errno);
CATCH_EINTR(err = waitpid(new_pid, 0, WUNTRACED));
if (err < 0)
tracer_panic("do_exec failed to attach proc in waitpid - errno = %d",
errno);
if(ptrace_getregs(old_pid, regs) < 0)
tracer_panic("do_exec failed to get registers - errno = %d",
errno);
os_kill_ptraced_process(old_pid, 0);
if (ptrace(PTRACE_OLDSETOPTIONS, new_pid, 0, (void *)PTRACE_O_TRACESYSGOOD) < 0)
tracer_panic("do_exec: PTRACE_SETOPTIONS failed, errno = %d", errno);
if(ptrace_setregs(new_pid, regs) < 0)
tracer_panic("do_exec failed to start new proc - errno = %d",
errno);
}
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/
