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* child_info.h (child_info): Add pppid_handle for closing the parent's of the

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parent handle.
* dcrt0.cc (_dll_crt0): Close parent's parent handle when spawned or forked.
* debug.cc (add_handle): Correct erroneous reference to handle structure when
printing warning.
* exceptions.cc (interrupt_now): Always return 1.
(interrupt_on_return): Accept a sigthread argument.  Check to see if this
argument has been trashed prior to setting up the stack return.
(call_handler): Add a loop around attempts to dispatch signals to detect case
where interrupt_on_return fails.
(_sigdelayed): Set up a temporary frame pointer prior to calling stuff that
could trigger an interrupt or the stack walking code will be very confused.
* fork.cc (fork_parent): Move a lot of the setup of the child process into
proc_subproc.
* spawn.cc (spawn_guts): Ditto.  Use ppid_handle to contact logical parent when
reparenting.
* pinfo.h (_pinfo): Remember the logical handle of the parent process.
* sigproc.cc (proc_subproc): Record most stuff necessary for the _pinfo
structure that is inferrable from myself when adding children.
(wait_sig): Always set 'pending_signals' flag when about to kick off the signal
scanning loop.  Reset it only if there are no pending signals.
This commit is contained in:
Christopher Faylor
2000-11-06 06:36:32 +00:00
parent e0997f5a0f
commit dd11f11fae
9 changed files with 189 additions and 142 deletions
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23
winsup/cygwin/spawn.cc
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@ -707,22 +707,6 @@ skip_arg_parsing:
}
child->username[0] = '\0';
child->progname[0] = '\0';
child->ppid = myself->pid;
child->gid = myself->gid;
child->pgid = myself->pgid;
child->sid = myself->sid;
child->ctty = myself->ctty;
child->umask = myself->umask;
child->process_state |= PID_INITIALIZING;
if (myself->use_psid)
{
child->use_psid = 1;
memcpy (child->psid, myself->psid, MAX_SID_LEN);
}
memcpy (child->logsrv, myself->logsrv, MAX_HOST_NAME);
memcpy (child->domain, myself->domain, MAX_COMPUTERNAME_LENGTH+1);
memcpy (child->root, myself->root, MAX_PATH+1);
child->rootlen = myself->rootlen;
child->dwProcessId = pi.dwProcessId;
child->hProcess = pi.hProcess;
child.remember ();
@ -808,20 +792,17 @@ skip_arg_parsing:
{
int rc = 0;
HANDLE oldh = myself->hProcess;
HANDLE h = OpenProcess (PROCESS_ALL_ACCESS, FALSE,
parent->dwProcessId);
HANDLE h = myself->ppid_handle;
sigproc_printf ("parent handle %p, pid %d", h, parent->dwProcessId);
if (h == NULL && GetLastError () == ERROR_INVALID_PARAMETER)
rc = 1;
rc = 0;
else if (h)
{
ProtectHandle (h);
rc = DuplicateHandle (hMainProc, pi.hProcess,
h, &myself->hProcess, 0, FALSE,
DUPLICATE_SAME_ACCESS);
sigproc_printf ("%d = DuplicateHandle, oldh %p, newh %p",
rc, oldh, myself->hProcess);
ForceCloseHandle (h);
}
if (!rc)
{