/*
- * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2007 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_OSREFERENCE_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
- * compliance with the License. The rights granted to you under the
- * License may not be used to create, or enable the creation or
- * redistribution of, 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.
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
- * Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * 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
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * 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.
*
- * 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,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
+ * 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,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * 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_LICENSE_OSREFERENCE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
+ */
+/*
+ * 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.
*/
/* $NetBSD: sem.h,v 1.5 1994/06/29 06:45:15 cgd Exp $ */
#endif
struct user_semid_ds {
- struct ipc_perm sem_perm; /* [XSI] operation permission struct */
- struct sem *sem_base; /* 32 bit base ptr for semaphore set */
- unsigned short sem_nsems; /* [XSI] number of sems in set */
- user_time_t sem_otime; /* [XSI] last operation time */
- __int32_t sem_pad1; /* RESERVED: DO NOT USE! */
- user_time_t sem_ctime; /* [XSI] last change time */
- /* Times measured in secs since */
- /* 00:00:00 GMT, Jan. 1, 1970 */
- __int32_t sem_pad2; /* RESERVED: DO NOT USE! */
- __int32_t sem_pad3[4]; /* RESERVED: DO NOT USE! */
+ struct ipc_perm sem_perm; /* [XSI] operation permission struct */
+ struct sem *sem_base; /* 32 bit base ptr for semaphore set */
+ unsigned short sem_nsems; /* [XSI] number of sems in set */
+ user_time_t sem_otime; /* [XSI] last operation time */
+ __int32_t sem_pad1; /* RESERVED: DO NOT USE! */
+ user_time_t sem_ctime; /* [XSI] last change time */
+ /* Times measured in secs since */
+ /* 00:00:00 GMT, Jan. 1, 1970 */
+ __int32_t sem_pad2; /* RESERVED: DO NOT USE! */
+ __int32_t sem_pad3[4]; /* RESERVED: DO NOT USE! */
+};
+
+#pragma pack(4)
+struct user64_semid_ds {
+ struct ipc_perm sem_perm; /* [XSI] operation permission struct */
+ int32_t sem_base; /* 32 bit base ptr for semaphore set */
+ unsigned short sem_nsems; /* [XSI] number of sems in set */
+ user64_time_t sem_otime; /* [XSI] last operation time */
+ int32_t sem_pad1; /* RESERVED: DO NOT USE! */
+ user64_time_t sem_ctime; /* [XSI] last change time */
+ /* Times measured in secs since */
+ /* 00:00:00 GMT, Jan. 1, 1970 */
+ int32_t sem_pad2; /* RESERVED: DO NOT USE! */
+ int32_t sem_pad3[4]; /* RESERVED: DO NOT USE! */
+};
+
+struct user32_semid_ds {
+ struct ipc_perm sem_perm; /* [XSI] operation permission struct */
+ int32_t sem_base; /* 32 bit base ptr for semaphore set */
+ unsigned short sem_nsems; /* [XSI] number of sems in set */
+ user32_time_t sem_otime; /* [XSI] last operation time */
+ int32_t sem_pad1; /* RESERVED: DO NOT USE! */
+ user32_time_t sem_ctime; /* [XSI] last change time */
+ /* Times measured in secs since */
+ /* 00:00:00 GMT, Jan. 1, 1970 */
+ int32_t sem_pad2; /* RESERVED: DO NOT USE! */
+ int32_t sem_pad3[4]; /* RESERVED: DO NOT USE! */
};
+#pragma pack()
union user_semun {
- user_addr_t buf; /* buffer for IPC_STAT & IPC_SET */
- user_addr_t array; /* array for GETALL & SETALL */
+ user_addr_t buf; /* buffer for IPC_STAT & IPC_SET */
+ user_addr_t array; /* array for GETALL & SETALL */
};
typedef union user_semun user_semun_t;
/*
* Kernel implementation stuff
*/
-#define SEMVMX 32767 /* semaphore maximum value */
-#define SEMAEM 16384 /* adjust on exit max value */
+#define SEMVMX 32767 /* semaphore maximum value */
+#define SEMAEM 16384 /* adjust on exit max value */
/*
* Configuration parameters. SEMMNI, SEMMNS, and SEMMNU are hard limits.
/*
* Configuration parameters
*/
-#ifndef SEMMNS /* # of semaphores in system */
-#define SEMMNS (1048576/sizeof(struct sem))
-#endif /* no more than 1M of semaphore data */
-#ifndef SEMMNI /* # of semaphore identifiers */
-#define SEMMNI SEMMNS /* max of 1 for each semaphore */
+#ifndef SEMMNS /* # of semaphores in system */
+#define SEMMNS (1048576/sizeof(struct sem))
+#endif /* no more than 1M of semaphore data */
+#ifndef SEMMNI /* # of semaphore identifiers */
+#define SEMMNI SEMMNS /* max of 1 for each semaphore */
#endif
#ifndef SEMUME
-#define SEMUME 10 /* max # of undo entries per process */
+#define SEMUME 10 /* max # of undo entries per process */
#endif
-#ifndef SEMMNU /* # of undo structures in system */
-#define SEMMNU SEMMNS /* 1 for each semaphore. This is quite large */
-#endif /* This should be max 1 for each process */
+#ifndef SEMMNU /* # of undo structures in system */
+#define SEMMNU SEMMNS /* 1 for each semaphore. This is quite large */
+#endif /* This should be max 1 for each process */
/* shouldn't need tuning */
#ifndef SEMMAP
-#define SEMMAP 30 /* # of entries in semaphore map */
+#define SEMMAP 30 /* # of entries in semaphore map */
#endif
#ifndef SEMMSL
-#define SEMMSL SEMMNS /* max # of semaphores per id */
+#define SEMMSL SEMMNS /* max # of semaphores per id */
#endif
#ifndef SEMOPM
-#define SEMOPM 100 /* max # of operations per semop call */
+#define SEMOPM 5 /* max # of operations per semop call */
#endif
* Undo structure (internal: one per process)
*/
struct sem_undo {
- struct sem_undo *un_next; /* ptr to next active undo structure */
- struct proc *un_proc; /* owner of this structure */
- short un_cnt; /* # of active entries */
+ int un_next_idx; /* index of next active undo structure */
+ struct proc *un_proc; /* owner of this structure */
+ short un_cnt; /* # of active entries */
struct undo {
- short une_adjval; /* adjust on exit values */
- short une_num; /* semaphore # */
- int une_id; /* semid */
- struct undo *une_next; /* next undo entry */
- } *un_ent; /* undo entries */
+ short une_adjval; /* adjust on exit values */
+ short une_num; /* semaphore # */
+ int une_id; /* semid */
+ struct undo *une_next; /* next undo entry */
+ } *un_ent; /* undo entries */
};
/*
* semaphore info struct (internal; for administrative limits and ipcs)
*/
struct seminfo {
- int semmap, /* # of entries in semaphore map */
- semmni, /* # of semaphore identifiers */
- semmns, /* # of semaphores in system */
- semmnu, /* # of undo structures in system */
- semmsl, /* max # of semaphores per id */
- semopm, /* max # of operations per semop call */
- semume, /* max # of undo entries per process */
- semusz, /* size in bytes of undo structure */
- semvmx, /* semaphore maximum value */
- semaem; /* adjust on exit max value */
+ int semmap, /* # of entries in semaphore map */
+ semmni, /* # of semaphore identifiers */
+ semmns, /* # of semaphores in system */
+ semmnu, /* # of undo structures in system */
+ semmsl, /* max # of semaphores per id */
+ semopm, /* max # of operations per semop call */
+ semume, /* max # of undo entries per process */
+ semusz, /* size in bytes of undo structure */
+ semvmx, /* semaphore maximum value */
+ semaem; /* adjust on exit max value */
+};
+extern struct seminfo seminfo;
+
+/*
+ * Kernel wrapper for the user-level structure
+ */
+struct semid_kernel {
+ struct user_semid_ds u;
+ struct label *label; /* MAC framework label */
};
-extern struct seminfo seminfo;
+
/* internal "mode" bits */
-#define SEM_ALLOC 01000 /* semaphore is allocated */
-#define SEM_DEST 02000 /* semaphore will be destroyed on last detach */
+#define SEM_ALLOC 01000 /* semaphore is allocated */
+#define SEM_DEST 02000 /* semaphore will be destroyed on last detach */
-#define SEMMNI_INC 8 /* increment value for semaphore identifiers */
-#define SEMMNS_INC 64 /* increment value for semaphores */
-#define SEMMNU_INC 32 /* increment value for undo structures */
+#define SEMMNI_INC 8 /* increment value for semaphore identifiers */
+#define SEMMNS_INC 64 /* increment value for semaphores */
+#define SEMMNU_INC 32 /* increment value for undo structures */
/*
* Due to the way semaphore memory is allocated, we have to ensure that
/*
* #define SEMUSZ SEM_ALIGN(offsetof(struct sem_undo, un_ent[SEMUME]))
*/
-#define SEMUSZ sizeof(struct sem_undo)
+#define SEMUSZ sizeof(struct sem_undo)
-extern struct user_semid_ds *sema; /* semaphore id pool */
-extern struct sem *sem_pool; /* semaphore pool */
-/* This is now a struct sem_undo with the new memory allocation
+extern struct semid_kernel *sema; /* semaphore id pool */
+extern struct sem *sem_pool; /* semaphore pool */
+/* This is now a struct sem_undo with the new memory allocation
* extern int *semu; // undo structure pool
*/
-extern struct sem_undo *semu; /* undo structure pool */
+extern struct sem_undo *semu; /* undo structure pool */
/*
* Macro to find a particular sem_undo vector
/*
* This macro doesn't work because we are using a staticly allocated array
* for semu now.
- * #define SEMU(ix) ((struct sem_undo *)(((intptr_t)semu)+ix * SEMUSZ))
+ * #define SEMU(ix) ((struct sem_undo *)(((intptr_t)semu)+ix * SEMUSZ))
*/
#define SEMU(ix) (&semu[ix])
/*
* Process sem_undo vectors at proc exit.
*/
-void semexit(struct proc *p);
+void semexit(struct proc *p);
#endif /* !_SYS_SEM__INTERNALH_ */
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