1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 2003 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ 28*0Sstevel@tonic-gate /* All Rights Reserved */ 29*0Sstevel@tonic-gate 30*0Sstevel@tonic-gate /* 31*0Sstevel@tonic-gate * Portions of this source code were derived from Berkeley 4.3 BSD 32*0Sstevel@tonic-gate * under license from the Regents of the University of California. 33*0Sstevel@tonic-gate */ 34*0Sstevel@tonic-gate 35*0Sstevel@tonic-gate #ifndef _SYS_SHM_H 36*0Sstevel@tonic-gate #define _SYS_SHM_H 37*0Sstevel@tonic-gate 38*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 39*0Sstevel@tonic-gate 40*0Sstevel@tonic-gate #include <sys/ipc.h> 41*0Sstevel@tonic-gate 42*0Sstevel@tonic-gate #ifdef __cplusplus 43*0Sstevel@tonic-gate extern "C" { 44*0Sstevel@tonic-gate #endif 45*0Sstevel@tonic-gate 46*0Sstevel@tonic-gate /* 47*0Sstevel@tonic-gate * IPC Shared Memory Facility. 48*0Sstevel@tonic-gate */ 49*0Sstevel@tonic-gate 50*0Sstevel@tonic-gate /* 51*0Sstevel@tonic-gate * Implementation Constants. 52*0Sstevel@tonic-gate */ 53*0Sstevel@tonic-gate #if (defined(_KERNEL) || defined(_KMEMUSER)) 54*0Sstevel@tonic-gate 55*0Sstevel@tonic-gate #define SHMLBA PAGESIZE /* segment low boundary address multiple */ 56*0Sstevel@tonic-gate /* (SHMLBA must be a power of 2) */ 57*0Sstevel@tonic-gate #else 58*0Sstevel@tonic-gate #include <sys/unistd.h> /* needed for _SC_PAGESIZE */ 59*0Sstevel@tonic-gate extern long _sysconf(int); /* System Private interface to sysconf() */ 60*0Sstevel@tonic-gate #define SHMLBA (_sysconf(_SC_PAGESIZE)) 61*0Sstevel@tonic-gate #endif /* defined(_KERNEL) || defined(_KMEMUSER)) */ 62*0Sstevel@tonic-gate 63*0Sstevel@tonic-gate /* 64*0Sstevel@tonic-gate * Permission Definitions. 65*0Sstevel@tonic-gate */ 66*0Sstevel@tonic-gate #define SHM_R 0400 /* read permission */ 67*0Sstevel@tonic-gate #define SHM_W 0200 /* write permission */ 68*0Sstevel@tonic-gate 69*0Sstevel@tonic-gate /* 70*0Sstevel@tonic-gate * Message Operation Flags. 71*0Sstevel@tonic-gate */ 72*0Sstevel@tonic-gate #define SHM_RDONLY 010000 /* attach read-only (else read-write) */ 73*0Sstevel@tonic-gate #define SHM_RND 020000 /* round attach address to SHMLBA */ 74*0Sstevel@tonic-gate #define SHM_SHARE_MMU 040000 /* share VM resources such as page table */ 75*0Sstevel@tonic-gate #define SHM_PAGEABLE 0100000 /* pageable ISM */ 76*0Sstevel@tonic-gate 77*0Sstevel@tonic-gate /* 78*0Sstevel@tonic-gate * Valid flags bits for shmat shmflag argument. 79*0Sstevel@tonic-gate */ 80*0Sstevel@tonic-gate #define SHMAT_VALID_FLAGS_MASK \ 81*0Sstevel@tonic-gate (SHM_R | SHM_W | SHM_RDONLY | SHM_RND | SHM_SHARE_MMU | SHM_PAGEABLE) 82*0Sstevel@tonic-gate 83*0Sstevel@tonic-gate typedef unsigned long shmatt_t; 84*0Sstevel@tonic-gate 85*0Sstevel@tonic-gate /* 86*0Sstevel@tonic-gate * Structure Definitions. 87*0Sstevel@tonic-gate */ 88*0Sstevel@tonic-gate struct shmid_ds { 89*0Sstevel@tonic-gate struct ipc_perm shm_perm; /* operation permission struct */ 90*0Sstevel@tonic-gate size_t shm_segsz; /* size of segment in bytes */ 91*0Sstevel@tonic-gate #if defined(_LP64) || defined(_XOPEN_SOURCE) 92*0Sstevel@tonic-gate void *shm_amp; 93*0Sstevel@tonic-gate #else 94*0Sstevel@tonic-gate struct anon_map *shm_amp; /* segment anon_map pointer */ 95*0Sstevel@tonic-gate #endif 96*0Sstevel@tonic-gate ushort_t shm_lkcnt; /* number of times it is being locked */ 97*0Sstevel@tonic-gate pid_t shm_lpid; /* pid of last shmop */ 98*0Sstevel@tonic-gate pid_t shm_cpid; /* pid of creator */ 99*0Sstevel@tonic-gate shmatt_t shm_nattch; /* number of attaches */ 100*0Sstevel@tonic-gate ulong_t shm_cnattch; /* number of ISM attaches */ 101*0Sstevel@tonic-gate #if defined(_LP64) 102*0Sstevel@tonic-gate time_t shm_atime; /* last shmat time */ 103*0Sstevel@tonic-gate time_t shm_dtime; /* last shmdt time */ 104*0Sstevel@tonic-gate time_t shm_ctime; /* last change time */ 105*0Sstevel@tonic-gate int64_t shm_pad4[4]; /* reserve area */ 106*0Sstevel@tonic-gate #else /* _LP64 */ 107*0Sstevel@tonic-gate time_t shm_atime; /* last shmat time */ 108*0Sstevel@tonic-gate int32_t shm_pad1; /* reserved for time_t expansion */ 109*0Sstevel@tonic-gate time_t shm_dtime; /* last shmdt time */ 110*0Sstevel@tonic-gate int32_t shm_pad2; /* reserved for time_t expansion */ 111*0Sstevel@tonic-gate time_t shm_ctime; /* last change time */ 112*0Sstevel@tonic-gate int32_t shm_pad3; /* reserved for time_t expansion */ 113*0Sstevel@tonic-gate int32_t shm_pad4[4]; /* reserve area */ 114*0Sstevel@tonic-gate #endif /* _LP64 */ 115*0Sstevel@tonic-gate }; 116*0Sstevel@tonic-gate 117*0Sstevel@tonic-gate /* 118*0Sstevel@tonic-gate * Shared memory control operations 119*0Sstevel@tonic-gate */ 120*0Sstevel@tonic-gate #define SHM_LOCK 3 /* Lock segment in core */ 121*0Sstevel@tonic-gate #define SHM_UNLOCK 4 /* Unlock segment */ 122*0Sstevel@tonic-gate 123*0Sstevel@tonic-gate #if !defined(_KERNEL) 124*0Sstevel@tonic-gate #if defined(__STDC__) 125*0Sstevel@tonic-gate int shmget(key_t, size_t, int); 126*0Sstevel@tonic-gate int shmids(int *, uint_t, uint_t *); 127*0Sstevel@tonic-gate int shmctl(int, int, struct shmid_ds *); 128*0Sstevel@tonic-gate void *shmat(int, const void *, int); 129*0Sstevel@tonic-gate #if defined(_XPG4) 130*0Sstevel@tonic-gate int shmdt(const void *); 131*0Sstevel@tonic-gate #else 132*0Sstevel@tonic-gate int shmdt(char *); 133*0Sstevel@tonic-gate #endif /* defined(_XPG4) */ 134*0Sstevel@tonic-gate #else /* __STDC__ */ 135*0Sstevel@tonic-gate int shmctl(); 136*0Sstevel@tonic-gate int shmget(); 137*0Sstevel@tonic-gate int shmids(); 138*0Sstevel@tonic-gate void *shmat(); 139*0Sstevel@tonic-gate int shmdt(); 140*0Sstevel@tonic-gate #endif /* __STDC__ */ 141*0Sstevel@tonic-gate #endif /* !defined(_KERNEL) */ 142*0Sstevel@tonic-gate 143*0Sstevel@tonic-gate #ifdef __cplusplus 144*0Sstevel@tonic-gate } 145*0Sstevel@tonic-gate #endif 146*0Sstevel@tonic-gate 147*0Sstevel@tonic-gate #endif /* _SYS_SHM_H */ 148