freebsd-dev/lib/libc_r/uthread/uthread_cap_get_fd.c
Thomas Moestl 16cb0dd753 Add thread safety wrappers for the posix1e syscalls that deal with file
descriptors.

Approved by:	rwatson
Obtained from:	TrustedBSD Project
2001-04-04 18:10:25 +00:00

49 lines
1.7 KiB
C

/*-
* Copyright (c) 2001 Thomas Moestl
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#include <sys/types.h>
#include <sys/capability.h>
#include <pthread.h>
#include "pthread_private.h"
#pragma weak __cap_get_fd=___cap_get_fd
int
___cap_get_fd(int fd, struct cap *cap_p)
{
int error;
if ((error = _FD_LOCK(fd, FD_READ, NULL)) == 0) {
error = __sys___cap_get_fd(fd, cap_p);
_FD_UNLOCK(fd, FD_READ);
}
return (error);
}