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* fhandler.h (class fhandler_dev_tape): Add declaration for 

fixup_after_fork and set_close_on_exec.
	* fhandler_tape.cc (fhandler_dev_tape::open): Create mt_mtx mutex
	inheritable.
	(fhandler_dev_tape::close): Close mt_mtx.
	(fhandler_dev_tape::dup): Duplicate mt_mtx and mt_evt as necessary.
	(fhandler_dev_tape::fixup_after_fork): New method.
	(fhandler_dev_tape::set_close_on_exec): New method.
This commit is contained in:
Corinna Vinschen 2005-06-22 19:59:19 +00:00
parent 2a770b2a6f
commit d9c1b93d19
3 changed files with 52 additions and 1 deletions
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11
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,14 @@
2005-06-22 Corinna Vinschen <corinna@vinschen.de>
* fhandler.h (class fhandler_dev_tape): Add declaration for
fixup_after_fork and set_close_on_exec.
* fhandler_tape.cc (fhandler_dev_tape::open): Create mt_mtx mutex
inheritable.
(fhandler_dev_tape::close): Close mt_mtx.
(fhandler_dev_tape::dup): Duplicate mt_mtx and mt_evt as necessary.
(fhandler_dev_tape::fixup_after_fork): New method.
(fhandler_dev_tape::set_close_on_exec): New method.
2005-06-21 Corinna Vinschen <corinna@vinschen.de>
* security.cc (get_initgroups_sidlist): Drop special_pgrp parameter.

2
winsup/cygwin/fhandler.h
View File

@ -636,6 +636,8 @@ class fhandler_dev_tape: public fhandler_dev_raw
virtual int __stdcall fstat (struct __stat64 *buf) __attribute__ ((regparm (2)));
virtual int dup (fhandler_base *child);
virtual void fixup_after_fork (HANDLE parent);
virtual void set_close_on_exec (bool val);
virtual int ioctl (unsigned int cmd, void *buf);
};

40
winsup/cygwin/fhandler_tape.cc
View File

@ -1218,7 +1218,7 @@ fhandler_dev_tape::open (int flags, mode_t)
set_errno (ENOENT);
return 0;
}
if (!(mt_mtx = CreateMutex (&sec_all, FALSE, NULL)))
if (!(mt_mtx = CreateMutex (&sec_all, TRUE, NULL)))
{
__seterrno ();
return 0;
@ -1256,6 +1256,7 @@ fhandler_dev_tape::close (void)
ret = mt->drive (driveno ())->close (get_handle (), is_rewind_device ());
if (mt_evt)
CloseHandle (mt_evt);
CloseHandle (mt_mtx);
if (ret)
__seterrno_from_win_error (ret);
cret = fhandler_dev_raw::close ();
@ -1446,9 +1447,46 @@ int
fhandler_dev_tape::dup (fhandler_base *child)
{
lock (-1);
fhandler_dev_tape *fh = (fhandler_dev_tape *) child;
if (!DuplicateHandle (hMainProc, mt_mtx, hMainProc, &fh->mt_mtx, 0, TRUE,
DUPLICATE_SAME_ACCESS))
{
debug_printf ("dup(%s) failed, mutex handle %x, %E",
get_name (), mt_mtx);
__seterrno ();
return unlock (-1);
}
fh->mt_evt = NULL;
if (mt_evt &&
!DuplicateHandle (hMainProc, mt_evt, hMainProc, &fh->mt_evt, 0, TRUE,
DUPLICATE_SAME_ACCESS))
{
debug_printf ("dup(%s) failed, event handle %x, %E",
get_name (), mt_evt);
__seterrno ();
return unlock (-1);
}
return unlock (fhandler_dev_raw::dup (child));
}
void
fhandler_dev_tape::fixup_after_fork (HANDLE parent)
{
fhandler_dev_raw::fixup_after_fork (parent);
fork_fixup (parent, mt_mtx, "mt_mtx");
if (mt_evt)
fork_fixup (parent, mt_evt, "mt_evt");
}
void
fhandler_dev_tape::set_close_on_exec (bool val)
{
fhandler_dev_raw::set_close_on_exec (val);
set_no_inheritance (mt_mtx, val);
if (mt_evt)
set_no_inheritance (mt_evt, val);
}
int
fhandler_dev_tape::ioctl (unsigned int cmd, void *buf)
{