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/* Copyright (C) 2021-2022 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <unistd.h>
#include <hurd.h>
#include <hurd/fd.h>
/* Close the file descriptors from FIRST up to LAST, inclusive.
If CLOSE_RANGE_CLOEXEC is set in FLAGS, set the FD_CLOEXEC flag
instead of closing. */
int
__close_range (unsigned int first, unsigned int last,
int flags)
{
int i;
if (first > last)
return __hurd_fail (EINVAL);
if (flags & ~CLOSE_RANGE_CLOEXEC)
return __hurd_fail (EINVAL);
HURD_CRITICAL_BEGIN;
__mutex_lock (&_hurd_dtable_lock);
for (i = first; i <= last && i < _hurd_dtablesize; i++)
{
struct hurd_fd *fd = _hurd_dtable[i];
if (fd == NULL || fd->port.port == MACH_PORT_NULL)
continue;
__spin_lock (&fd->port.lock);
if (flags & CLOSE_RANGE_CLOEXEC)
fd->flags |= FD_CLOEXEC;
else
{
_hurd_port_set (&fd->ctty, MACH_PORT_NULL);
_hurd_port_locked_set (&fd->port, MACH_PORT_NULL);
}
__spin_unlock (&fd->port.lock);
}
__mutex_unlock (&_hurd_dtable_lock);
HURD_CRITICAL_END;
return 0;
}
libc_hidden_def (__close_range)
weak_alias (__close_range, close_range)
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