freebsd-dev/contrib/openbsm/bin/auditdistd/openat.h
Robert Watson aa77200569 Merge OpenBSM 1.2-alpha2 from vendor branch to FreeBSD 10-CURRENT; the
primary new feature is auditdistd.

Obtained from:	TrustedBSD Project
Sponsored by:	The FreeBSD Foundation (auditdistd)
2012-12-01 11:58:08 +00:00

76 lines
2.2 KiB
C

/*-
* Copyright (c) 2012 The FreeBSD Foundation
* All rights reserved.
*
* This software was developed by Pawel Jakub Dawidek under sponsorship from
* the FreeBSD Foundation.
*
* 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 AUTHORS 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 AUTHORS 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.
*
* $P4: //depot/projects/trustedbsd/openbsm/bin/auditdistd/openat.h#1 $
*/
#ifndef _OPENAT_H_
#define _OPENAT_H_
#include <fcntl.h>
#include <stdarg.h>
#include <unistd.h>
static int
openat(int fd, const char *path, int flags, ...)
{
int cfd, ffd, error;
cfd = open(".", O_RDONLY | O_DIRECTORY);
if (cfd == -1)
return (-1);
if (fchdir(fd) == -1) {
error = errno;
(void)close(cfd);
errno = error;
return (-1);
}
if ((flags & O_CREAT) != 0) {
va_list ap;
int mode;
va_start(ap, flags);
mode = va_arg(ap, int);
va_end(ap);
ffd = open(path, flags, mode);
} else {
ffd = open(path, flags);
}
error = errno;
(void)fchdir(cfd);
(void)close(cfd);
errno = error;
return (ffd);
}
#endif /* !_OPENAT_H_ */