mirror of https://gitee.com/openkylin/linux.git
87 lines
2.3 KiB
C
87 lines
2.3 KiB
C
/**********************************************************************
|
|
wait.c
|
|
|
|
Copyright (C) 1999 Lars Brinkhoff. See the file COPYING for licensing
|
|
terms and conditions.
|
|
|
|
**********************************************************************/
|
|
|
|
#include <errno.h>
|
|
#include <signal.h>
|
|
#include <sys/wait.h>
|
|
|
|
#include "ptproxy.h"
|
|
#include "sysdep.h"
|
|
#include "wait.h"
|
|
#include "user_util.h"
|
|
#include "ptrace_user.h"
|
|
#include "sysdep/ptrace.h"
|
|
#include "sysdep/sigcontext.h"
|
|
|
|
int proxy_wait_return(struct debugger *debugger, pid_t unused)
|
|
{
|
|
debugger->waiting = 0;
|
|
|
|
if(debugger->debugee->died || (debugger->wait_options & __WCLONE)){
|
|
debugger_cancelled_return(debugger, -ECHILD);
|
|
return(0);
|
|
}
|
|
|
|
if(debugger->debugee->zombie && debugger->debugee->event)
|
|
debugger->debugee->died = 1;
|
|
|
|
if(debugger->debugee->event){
|
|
debugger->debugee->event = 0;
|
|
ptrace(PTRACE_POKEDATA, debugger->pid,
|
|
debugger->wait_status_ptr,
|
|
debugger->debugee->wait_status);
|
|
/* if (wait4)
|
|
ptrace (PTRACE_POKEDATA, pid, rusage_ptr, ...); */
|
|
debugger_cancelled_return(debugger, debugger->debugee->pid);
|
|
return(0);
|
|
}
|
|
|
|
/* pause will return -EINTR, which happens to be right for wait */
|
|
debugger_normal_return(debugger, -1);
|
|
return(0);
|
|
}
|
|
|
|
int parent_wait_return(struct debugger *debugger, pid_t unused)
|
|
{
|
|
return(debugger_normal_return(debugger, -1));
|
|
}
|
|
|
|
int real_wait_return(struct debugger *debugger)
|
|
{
|
|
unsigned long ip;
|
|
int pid;
|
|
|
|
pid = debugger->pid;
|
|
|
|
ip = ptrace(PTRACE_PEEKUSR, pid, PT_IP_OFFSET, 0);
|
|
IP_RESTART_SYSCALL(ip);
|
|
|
|
if(ptrace(PTRACE_POKEUSR, pid, PT_IP_OFFSET, ip) < 0)
|
|
tracer_panic("real_wait_return : Failed to restart system "
|
|
"call, errno = %d\n", errno);
|
|
|
|
if((ptrace(PTRACE_SYSCALL, debugger->pid, 0, SIGCHLD) < 0) ||
|
|
(ptrace(PTRACE_SYSCALL, debugger->pid, 0, 0) < 0) ||
|
|
(ptrace(PTRACE_SYSCALL, debugger->pid, 0, 0) < 0) ||
|
|
debugger_normal_return(debugger, -1))
|
|
tracer_panic("real_wait_return : gdb failed to wait, "
|
|
"errno = %d\n", errno);
|
|
return(0);
|
|
}
|
|
|
|
/*
|
|
* 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:
|
|
*/
|