84d9c625bf
- Fix for possible unset uid/gid in toproto
- Fix for default mtree style
- Update libelf
- Importing libexecinfo
- Resynchronize GCC, mpc, gmp, mpfr
- build.sh: Replace params with show-params.
This has been done as the make target has been renamed in the same
way, while a new target named params has been added. This new
target generates a file containing all the parameters, instead of
printing it on the console.
- Update test48 with new etc/services (Fix by Ben Gras <ben@minix3.org)
get getservbyport() out of the inner loop
Change-Id: Ie6ad5226fa2621ff9f0dee8782ea48f9443d2091
240 lines
7 KiB
C
240 lines
7 KiB
C
/* $NetBSD: sem.h,v 1.29 2009/01/19 19:39:41 christos Exp $ */
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/*-
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* Copyright (c) 1999 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
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* NASA Ames Research Center.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* SVID compatible sem.h file
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*
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* Author: Daniel Boulet
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*/
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#ifndef _SYS_SEM_H_
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#define _SYS_SEM_H_
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#include <sys/featuretest.h>
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#include <sys/ipc.h>
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#ifdef _KERNEL
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struct __sem {
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unsigned short semval; /* semaphore value */
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pid_t sempid; /* pid of last operation */
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unsigned short semncnt; /* # awaiting semval > cval */
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unsigned short semzcnt; /* # awaiting semval = 0 */
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};
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#endif /* _KERNEL */
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struct semid_ds {
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struct ipc_perm sem_perm; /* operation permission structure */
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unsigned short sem_nsems; /* number of semaphores in set */
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time_t sem_otime; /* last semop() time */
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time_t sem_ctime; /* last time changed by semctl() */
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/*
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* These members are private and used only in the internal
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* implementation of this interface.
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*/
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struct __sem *_sem_base; /* pointer to first semaphore in set */
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};
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/*
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* semop's sops parameter structure
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*/
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struct sembuf {
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unsigned short sem_num; /* semaphore # */
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short sem_op; /* semaphore operation */
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short sem_flg; /* operation flags */
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};
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#define SEM_UNDO 010000 /* undo changes on process exit */
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/*
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* commands for semctl
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*/
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#define GETNCNT 3 /* Return the value of semncnt {READ} */
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#define GETPID 4 /* Return the value of sempid {READ} */
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#define GETVAL 5 /* Return the value of semval {READ} */
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#define GETALL 6 /* Return semvals into arg.array {READ} */
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#define GETZCNT 7 /* Return the value of semzcnt {READ} */
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#define SETVAL 8 /* Set the value of semval to arg.val {ALTER} */
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#define SETALL 9 /* Set semvals from arg.array {ALTER} */
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#if defined(_KERNEL) || defined(__minix)
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/*
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* Kernel implementation stuff
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*/
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#define SEMVMX 32767 /* semaphore maximum value */
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#define SEMAEM 16384 /* adjust on exit max value */
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/*
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* Permissions
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*/
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#define SEM_A 0200 /* alter permission */
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#define SEM_R 0400 /* read permission */
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/*
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* Undo structure (one per process)
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*/
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struct sem_undo {
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struct sem_undo *un_next; /* ptr to next active undo structure */
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struct proc *un_proc; /* owner of this structure */
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short un_cnt; /* # of active entries */
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struct undo {
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short un_adjval; /* adjust on exit values */
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short un_num; /* semaphore # */
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int un_id; /* semid */
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} un_ent[1]; /* undo entries */
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};
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#endif /* _KERNEL */
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#if defined(_NETBSD_SOURCE)
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/*
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* semaphore info struct
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*/
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struct seminfo {
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int32_t semmap; /* # of entries in semaphore map */
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int32_t semmni; /* # of semaphore identifiers */
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int32_t semmns; /* # of semaphores in system */
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int32_t semmnu; /* # of undo structures in system */
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int32_t semmsl; /* max # of semaphores per id */
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int32_t semopm; /* max # of operations per semop call */
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int32_t semume; /* max # of undo entries per process */
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int32_t semusz; /* size in bytes of undo structure */
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int32_t semvmx; /* semaphore maximum value */
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int32_t semaem; /* adjust on exit max value */
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};
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/* Warning: 64-bit structure padding is needed here */
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struct semid_ds_sysctl {
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struct ipc_perm_sysctl sem_perm;
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int16_t sem_nsems;
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int16_t pad2;
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int32_t pad3;
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time_t sem_otime;
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time_t sem_ctime;
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};
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struct sem_sysctl_info {
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struct seminfo seminfo;
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struct semid_ds_sysctl semids[1];
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};
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/*
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* Internal "mode" bits. The first of these is used by ipcs(1), and so
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* is defined outside the kernel as well.
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*/
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#define SEM_ALLOC 01000 /* semaphore is allocated */
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#endif /* !_POSIX_C_SOURCE && !_XOPEN_SOURCE */
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#if defined(_KERNEL) || defined(__minix)
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#define SEM_DEST 02000 /* semaphore will be destroyed on last detach */
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/*
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* Configuration parameters
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*/
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#ifndef SEMMNI
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#define SEMMNI 10 /* # of semaphore identifiers */
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#endif
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#ifndef SEMMNS
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#define SEMMNS 60 /* # of semaphores in system */
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#endif
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#ifndef SEMUME
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#define SEMUME 10 /* max # of undo entries per process */
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#endif
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#ifndef SEMMNU
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#define SEMMNU 30 /* # of undo structures in system */
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#endif
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/* shouldn't need tuning */
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#ifndef SEMMAP
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#define SEMMAP 30 /* # of entries in semaphore map */
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#endif
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#ifndef SEMMSL
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#define SEMMSL SEMMNS /* max # of semaphores per id */
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#endif
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#ifndef SEMOPM
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#define SEMOPM 100 /* max # of operations per semop call */
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#endif
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/* actual size of an undo structure */
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#define SEMUSZ (sizeof(struct sem_undo)+sizeof(struct undo)*SEMUME)
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/*
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* Structures allocated in machdep.c
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*/
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extern struct seminfo seminfo;
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extern struct semid_ds *sema; /* semaphore id pool */
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/*
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* Parameters to the semconfig system call
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*/
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#define SEM_CONFIG_FREEZE 0 /* Freeze the semaphore facility. */
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#define SEM_CONFIG_THAW 1 /* Thaw the semaphore facility. */
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#define SYSCTL_FILL_SEM(src, dst) do { \
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SYSCTL_FILL_PERM((src).sem_perm, (dst).sem_perm); \
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(dst).sem_nsems = (src).sem_nsems; \
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(dst).sem_otime = (src).sem_otime; \
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(dst).sem_ctime = (src).sem_ctime; \
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} while (/*CONSTCOND*/ 0)
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#endif /* _KERNEL */
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#if defined(__minix)
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/* ipcs ctl cmds */
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# define SEM_STAT 18
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# define SEM_INFO 19
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#endif /* defined(__minix) */
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#ifndef _KERNEL
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#include <sys/cdefs.h>
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__BEGIN_DECLS
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#ifndef __LIBC12_SOURCE__
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int semctl(int, int, int, ...) __RENAME(__semctl50);
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#endif
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int semget(key_t, int, int);
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int semop(int, struct sembuf *, size_t);
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#if defined(_NETBSD_SOURCE)
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int semconfig(int);
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#endif
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__END_DECLS
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#else
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void seminit(void);
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void semexit(struct proc *, void *);
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int semctl1(struct lwp *, int, int, int, void *, register_t *);
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#define get_semctl_arg(cmd, sembuf, arg) \
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((cmd) == IPC_SET || (cmd) == IPC_STAT ? (void *)sembuf \
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: (cmd) == GETALL || (cmd) == SETVAL || (cmd) == SETALL ? (void *)arg \
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: NULL)
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#endif /* !_KERNEL */
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#endif /* !_SYS_SEM_H_ */
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