static pid_t
do_attach (pid_t pid)
{
procfs_status status;
struct sigevent event;
if (nto_inferior.ctl_fd != -1)
{
close (nto_inferior.ctl_fd);
init_nto_inferior (&nto_inferior);
}
xsnprintf (nto_inferior.nto_procfs_path, PATH_MAX - 1, "/proc/%d/as", pid);
nto_inferior.ctl_fd = open (nto_inferior.nto_procfs_path, O_RDWR);
if (nto_inferior.ctl_fd == -1)
{
TRACE ("Failed to open %s\n", nto_inferior.nto_procfs_path);
init_nto_inferior (&nto_inferior);
return -1;
}
if (devctl (nto_inferior.ctl_fd, DCMD_PROC_STOP, &status, sizeof (status), 0)
!= EOK)
{
do_detach ();
return -1;
}
nto_inferior.pid = pid;
/* Define a sigevent for process stopped notification. */
event.sigev_notify = SIGEV_SIGNAL_THREAD;
event.sigev_signo = SIGUSR1;
event.sigev_code = 0;
event.sigev_value.sival_ptr = NULL;
event.sigev_priority = -1;
devctl (nto_inferior.ctl_fd, DCMD_PROC_EVENT, &event, sizeof (event), 0);
if (devctl (nto_inferior.ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status),
0) == EOK
&& (status.flags & _DEBUG_FLAG_STOPPED))
{
ptid_t ptid;
struct process_info *proc;
kill (pid, SIGCONT);
ptid = ptid_build (status.pid, status.tid, 0);
the_low_target.arch_setup ();
proc = add_process (status.pid, 1);
proc->tdesc = nto_tdesc;
TRACE ("Adding thread: pid=%d tid=%ld\n", status.pid,
ptid_get_lwp (ptid));
nto_find_new_threads (&nto_inferior);
}
else
{
do_detach ();
return -1;
}
return pid;
}
static void
do_detach (void)
{
if (nto_inferior.ctl_fd != -1)
{
nto_trace ("Closing fd\n");
close (nto_inferior.ctl_fd);
init_nto_inferior (&nto_inferior);
}
}
