1/* 2 * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com) 3 * Licensed under the GPL 4 */ 5 6#include <stdio.h> 7#include <unistd.h> 8#include <stdlib.h> 9#include <sched.h> 10#include <errno.h> 11#include <sys/wait.h> 12#include <signal.h> 13#include "kern_util.h" 14#include "user.h" 15#include "ptrace_user.h" 16#include "os.h" 17 18void do_exec(int old_pid, int new_pid) 19{ 20 unsigned long regs[FRAME_SIZE]; 21 int err; 22 23 if((ptrace(PTRACE_ATTACH, new_pid, 0, 0) < 0) || 24 (ptrace(PTRACE_CONT, new_pid, 0, 0) < 0)) 25 tracer_panic("do_exec failed to attach proc - errno = %d", 26 errno); 27 28 CATCH_EINTR(err = waitpid(new_pid, 0, WUNTRACED)); 29 if (err < 0) 30 tracer_panic("do_exec failed to attach proc in waitpid - errno = %d", 31 errno); 32 33 if(ptrace_getregs(old_pid, regs) < 0) 34 tracer_panic("do_exec failed to get registers - errno = %d", 35 errno); 36 37 os_kill_ptraced_process(old_pid, 0); 38 39 if (ptrace(PTRACE_OLDSETOPTIONS, new_pid, 0, (void *)PTRACE_O_TRACESYSGOOD) < 0) 40 tracer_panic("do_exec: PTRACE_SETOPTIONS failed, errno = %d", errno); 41 42 if(ptrace_setregs(new_pid, regs) < 0) 43 tracer_panic("do_exec failed to start new proc - errno = %d", 44 errno); 45} 46 47/* 48 * Overrides for Emacs so that we follow Linus's tabbing style. 49 * Emacs will notice this stuff at the end of the file and automatically 50 * adjust the settings for this buffer only. This must remain at the end 51 * of the file. 52 * --------------------------------------------------------------------------- 53 * Local variables: 54 * c-file-style: "linux" 55 * End: 56 */ 57