mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-15 10:17:20 +00:00
5264841183
access to POSIX Semaphores: mac_init_posix_sem() Initialize label for POSIX semaphore mac_create_posix_sem() Create POSIX semaphore mac_destroy_posix_sem() Destroy POSIX semaphore mac_check_posix_sem_destroy() Check whether semaphore may be destroyed mac_check_posix_sem_getvalue() Check whether semaphore may be queried mac_check_possix_sem_open() Check whether semaphore may be opened mac_check_posix_sem_post() Check whether semaphore may be posted to mac_check_posix_sem_unlink() Check whether semaphore may be unlinked mac_check_posix_sem_wait() Check whether may wait on semaphore Update Biba, MLS, Stub, and Test policies to implement these entry points. For information flow policies, most semaphore operations are effectively read/write. Submitted by: Dandekar Hrishikesh <rishi_dandekar at sbcglobal dot net> Sponsored by: DARPA, McAfee, SPARTA Obtained from: TrustedBSD Project
60 lines
2.2 KiB
C
60 lines
2.2 KiB
C
/*-
|
|
* Copyright (c) 2002 Alfred Perlstein <alfred@FreeBSD.org>
|
|
* 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _POSIX4_KSEM_H_
|
|
#define _POSIX4_KSEM_H_
|
|
|
|
#ifndef _KERNEL
|
|
#error "no user-servicable parts inside"
|
|
#endif
|
|
|
|
#include <sys/condvar.h>
|
|
#include <sys/queue.h>
|
|
|
|
struct kuser {
|
|
pid_t ku_pid;
|
|
LIST_ENTRY(kuser) ku_next;
|
|
};
|
|
|
|
struct ksem {
|
|
LIST_ENTRY(ksem) ks_entry; /* global list entry */
|
|
int ks_onlist; /* boolean if on a list (ks_entry) */
|
|
char *ks_name; /* if named, this is the name */
|
|
int ks_ref; /* number of references */
|
|
mode_t ks_mode; /* protection bits */
|
|
uid_t ks_uid; /* creator uid */
|
|
gid_t ks_gid; /* creator gid */
|
|
unsigned int ks_value; /* current value */
|
|
struct cv ks_cv; /* waiters sleep here */
|
|
int ks_waiters; /* number of waiters */
|
|
LIST_HEAD(, kuser) ks_users; /* pids using this sem */
|
|
struct label *ks_label; /* MAC label */
|
|
};
|
|
|
|
#endif /* !_POSIX4_KSEM_H_ */
|