70 lines
2.1 KiB
C
70 lines
2.1 KiB
C
/*
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* Copyright 2000 Massachusetts Institute of Technology
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*
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* Permission to use, copy, modify, and distribute this software and
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* its documentation for any purpose and without fee is hereby
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* granted, provided that both the above copyright notice and this
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* permission notice appear in all copies, that both the above
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* copyright notice and this permission notice appear in all
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* supporting documentation, and that the name of M.I.T. not be used
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* in advertising or publicity pertaining to distribution of the
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* software without specific, written prior permission. M.I.T. makes
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* no representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied
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* warranty.
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*
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* THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
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* ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
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* SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/types.h>
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#include <sys/fcntl.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include <errno.h>
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#include <unistd.h>
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int
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shm_open(const char *path, int flags, mode_t mode)
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{
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int fd;
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struct stat stab;
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if ((flags & O_ACCMODE) == O_WRONLY)
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return (EINVAL);
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fd = open(path, flags, mode);
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if (fd != -1) {
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if (fstat(fd, &stab) != 0 || !S_ISREG(stab.st_mode)) {
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close(fd);
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errno = EINVAL;
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return (-1);
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}
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if (fcntl(fd, F_SETFL, (int)FPOSIXSHM) != 0) {
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close(fd);
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return (-1);
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}
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}
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return (fd);
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}
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int
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shm_unlink(const char *path)
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{
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return (unlink(path));
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}
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