glibc/sysdeps/mach/hurd/close_range.c
Paul Eggert 581c785bf3 Update copyright dates with scripts/update-copyrights
I used these shell commands:

../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")

and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 7061 files FOO.

I then removed trailing white space from math/tgmath.h,
support/tst-support-open-dev-null-range.c, and
sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following
obscure pre-commit check failure diagnostics from Savannah.  I don't
know why I run into these diagnostics whereas others evidently do not.

remote: *** 912-#endif
remote: *** 913:
remote: *** 914-
remote: *** error: lines with trailing whitespace found
...
remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
2022-01-01 11:40:24 -08:00

67 lines
1.9 KiB
C

/* 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)