172 lines
5.5 KiB
C
172 lines
5.5 KiB
C
/* $FreeBSD$ */
|
|
/* $NetBSD: shm.h,v 1.15 1994/06/29 06:45:17 cgd Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1994 Adam Glass
|
|
* 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.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Adam Glass.
|
|
* 4. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
|
|
*/
|
|
|
|
/*
|
|
* As defined+described in "X/Open System Interfaces and Headers"
|
|
* Issue 4, p. XXX
|
|
*/
|
|
|
|
#ifndef _SYS_SHM_H_
|
|
#define _SYS_SHM_H_
|
|
|
|
#include <sys/cdefs.h>
|
|
#include <sys/ipc.h>
|
|
#include <sys/_types.h>
|
|
|
|
#include <machine/param.h>
|
|
|
|
#define SHM_RDONLY 010000 /* Attach read-only (else read-write) */
|
|
#define SHM_RND 020000 /* Round attach address to SHMLBA */
|
|
#define SHMLBA PAGE_SIZE /* Segment low boundary address multiple */
|
|
|
|
/* "official" access mode definitions; somewhat braindead since you have
|
|
to specify (SHM_* >> 3) for group and (SHM_* >> 6) for world permissions */
|
|
#define SHM_R (IPC_R)
|
|
#define SHM_W (IPC_W)
|
|
|
|
/* predefine tbd *LOCK shmctl commands */
|
|
#define SHM_LOCK 11
|
|
#define SHM_UNLOCK 12
|
|
|
|
/* ipcs shmctl commands for Linux compatibility */
|
|
#define SHM_STAT 13
|
|
#define SHM_INFO 14
|
|
|
|
#ifndef _PID_T_DECLARED
|
|
typedef __pid_t pid_t;
|
|
#define _PID_T_DECLARED
|
|
#endif
|
|
|
|
#ifndef _TIME_T_DECLARED
|
|
typedef __time_t time_t;
|
|
#define _TIME_T_DECLARED
|
|
#endif
|
|
|
|
#ifndef _SIZE_T_DECLARED
|
|
typedef __size_t size_t;
|
|
#define _SIZE_T_DECLARED
|
|
#endif
|
|
|
|
#if defined(COMPAT_FREEBSD4) || defined(COMPAT_FREEBSD5) || \
|
|
defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD7)
|
|
struct shmid_ds_old {
|
|
struct ipc_perm_old shm_perm; /* operation permission structure */
|
|
int shm_segsz; /* size of segment in bytes */
|
|
pid_t shm_lpid; /* process ID of last shared memory op */
|
|
pid_t shm_cpid; /* process ID 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() */
|
|
void *shm_internal; /* sysv stupidity */
|
|
};
|
|
#endif
|
|
|
|
struct shmid_ds {
|
|
struct ipc_perm shm_perm; /* operation permission structure */
|
|
size_t shm_segsz; /* size of segment in bytes */
|
|
pid_t shm_lpid; /* process ID of last shared memory op */
|
|
pid_t shm_cpid; /* process ID of creator */
|
|
int 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() */
|
|
};
|
|
|
|
#ifdef _KERNEL
|
|
#include <vm/vm.h>
|
|
|
|
/*
|
|
* System 5 style catch-all structure for shared memory constants that
|
|
* might be of interest to user programs. Do we really want/need this?
|
|
*/
|
|
struct shminfo {
|
|
u_long shmmax; /* max shared memory segment size (bytes) */
|
|
u_long shmmin; /* max shared memory segment size (bytes) */
|
|
u_long shmmni; /* max number of shared memory identifiers */
|
|
u_long shmseg; /* max shared memory segments per process */
|
|
u_long shmall; /* max amount of shared memory (pages) */
|
|
};
|
|
|
|
/*
|
|
* 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 shmid_ds u;
|
|
vm_object_t object;
|
|
struct label *label; /* MAC label */
|
|
struct ucred *cred; /* creator's credendials */
|
|
};
|
|
|
|
extern struct shminfo shminfo;
|
|
|
|
struct shm_info {
|
|
int used_ids;
|
|
unsigned long shm_tot;
|
|
unsigned long shm_rss;
|
|
unsigned long shm_swp;
|
|
unsigned long swap_attempts;
|
|
unsigned long swap_successes;
|
|
};
|
|
|
|
struct thread;
|
|
struct proc;
|
|
struct vmspace;
|
|
|
|
void shmexit(struct vmspace *);
|
|
void shmfork(struct proc *, struct proc *);
|
|
#endif /* _KERNEL */
|
|
|
|
#if !defined(_KERNEL) || defined(_WANT_SHM_PROTOTYPES)
|
|
#include <sys/cdefs.h>
|
|
|
|
#ifndef _SIZE_T_DECLARED
|
|
typedef __size_t size_t;
|
|
#define _SIZE_T_DECLARED
|
|
#endif
|
|
|
|
__BEGIN_DECLS
|
|
#ifdef __BSD_VISIBLE
|
|
int shmsys(int, ...);
|
|
#endif
|
|
void *shmat(int, const void *, int);
|
|
int shmget(key_t, size_t, int);
|
|
int shmctl(int, int, struct shmid_ds *);
|
|
int shmdt(const void *);
|
|
__END_DECLS
|
|
|
|
#endif /* _KERNEL || _WANT_SHM_PROTOTYPES */
|
|
|
|
#endif /* !_SYS_SHM_H_ */
|