* Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
- *
+ *
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
- *
+ *
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
- *
+ *
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
- *
+ *
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/* $NetBSD: shm.h,v 1.15 1994/06/29 06:45:17 cgd Exp $ */
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
+/*
+ * NOTICE: This file was modified by SPARTA, Inc. in 2005 to introduce
+ * support for mandatory and extensible security protections. This notice
+ * is included in support of clause 2.2 (b) of the Apple Public License,
+ * Version 2.0.
+ */
/*
* As defined+described in "X/Open System Interfaces and Headers"
#include <machine/types.h>
-#if __DARWIN_ALIGN_NATURAL
-#pragma options align=natural
-#endif
+#pragma pack(4)
struct user_shmid_ds {
- struct ipc_perm shm_perm; /* operation permission structure */
- user_size_t shm_segsz; /* size of segment in bytes */
- pid_t shm_lpid; /* PID of last shared memory op */
- pid_t shm_cpid; /* PID of creator */
- short shm_nattch; /* number of current attaches */
- time_t shm_atime; /* time of last shmat() */
- time_t shm_dtime; /* time of last shmdt() */
- time_t shm_ctime; /* time of last change by shmctl() */
- user_addr_t shm_internal; /* reserved for kernel use */
+ struct ipc_perm shm_perm; /* operation permission structure */
+ user_size_t shm_segsz; /* size of segment in bytes */
+ pid_t shm_lpid; /* PID of last shared memory op */
+ pid_t shm_cpid; /* PID of creator */
+ short shm_nattch; /* number of current attaches */
+ user_time_t shm_atime; /* time of last shmat() */
+ user_time_t shm_dtime; /* time of last shmdt() */
+ user_time_t shm_ctime; /* time of last change by shmctl() */
+ user_addr_t shm_internal; /* reserved for kernel use */
+};
+
+struct user32_shmid_ds {
+ struct ipc_perm shm_perm; /* operation permission structure */
+ uint32_t shm_segsz; /* size of segment in bytes */
+ pid_t shm_lpid; /* PID of last shared memory op */
+ pid_t shm_cpid; /* PID of creator */
+ short shm_nattch; /* number of current attaches */
+ uint32_t shm_atime; /* time of last shmat() */
+ uint32_t shm_dtime; /* time of last shmdt() */
+ uint32_t shm_ctime; /* time of last change by shmctl() */
+ user32_addr_t shm_internal; /* reserved for kernel use */
};
-#if __DARWIN_ALIGN_NATURAL
-#pragma options align=reset
-#endif
+#pragma pack()
/*
* System 5 style catch-all structure for shared memory constants that
* might be of interest to user programs. Also part of the ipcs interface.
* Note: use of user_ssize_t intentional: permits 32 bit ipcs to provide
* information about 64 bit programs shared segments.
+ * Note 2: user_ssize_t is not that useful if it's not 64-bit,
+ * so let's use int64_t explicitely...
*/
struct shminfo {
- user_ssize_t shmmax; /* max shm segment size (bytes) */
- user_ssize_t shmmin; /* min shm segment size (bytes) */
- user_ssize_t shmmni; /* max number of shm identifiers */
- user_ssize_t shmseg; /* max shm segments per process */
- user_ssize_t shmall; /* max amount of shm (pages) */
+ int64_t shmmax; /* max shm segment size (bytes) */
+ int64_t shmmin; /* min shm segment size (bytes) */
+ int64_t shmmni; /* max number of shm identifiers */
+ int64_t shmseg; /* max shm segments per process */
+ int64_t shmall; /* max amount of shm (pages) */
};
#ifdef KERNEL
+
+struct label;
+
+/*
+ * Add a kernel wrapper to the shmid_ds struct so that private info (like the
+ * MAC label) can be added to it, without changing the user interface.
+ */
+struct shmid_kernel {
+ struct user_shmid_ds u;
+ struct label *label; /* MAC label */
+};
+
extern struct shminfo shminfo;
-extern struct user_shmid_ds *shmsegs;
+extern struct shmid_kernel *shmsegs;
struct proc;
__BEGIN_DECLS
-void shmexit(struct proc *);
-int shmfork(struct proc *, struct proc *);
-__private_extern__ void shmexec(struct proc *);
+void shmexit(struct proc *);
+int shmfork(struct proc *, struct proc *);
+__private_extern__ void shmexec(struct proc *);
__END_DECLS
projects / apple / xnu.git / blobdiff