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      1 /*	$NetBSD: linux_sem.h,v 1.11 2021/09/23 06:56:27 ryo Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1995, 1998 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Frank van der Linden and Eric Haszlakiewicz.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef _LINUX_SEM_H
     33 #define _LINUX_SEM_H
     34 
     35 #include <sys/sem.h>
     36 
     37 /*
     38  * Operations for semctl(2), in addition to IPC_STAT and IPC_SET
     39  */
     40 #define LINUX_GETPID  11
     41 #define LINUX_GETVAL  12
     42 #define LINUX_GETALL  13
     43 #define LINUX_GETNCNT 14
     44 #define LINUX_GETZCNT 15
     45 #define LINUX_SETVAL  16
     46 #define LINUX_SETALL  17
     47 
     48 /*
     49  * Linux semid_ds structure. Internally used pointer fields are not
     50  * important to us and have been changed to void *
     51  */
     52 
     53 struct linux_semid_ds {
     54 	struct linux_ipc_perm	 l_sem_perm;
     55 	linux_time_t		 l_sem_otime;
     56 	linux_time_t		 l_sem_ctime;
     57 	void 			*l_sem_base;
     58 	void			*l_eventn;
     59 	void			*l_eventz;
     60 	void			*l_undo;
     61 	ushort			 l_sem_nsems;
     62 };
     63 
     64 struct linux_semid64_ds {
     65 	struct linux_ipc64_perm	 l_sem_perm;
     66 	linux_time_t		 l_sem_otime;
     67 	unsigned long		 l___unused1;
     68 	linux_time_t		 l_sem_ctime;
     69 	unsigned long		 l___unused2;
     70 	unsigned long		 l_sem_nsems;
     71 	unsigned long		 l___unused3;
     72 	unsigned long		 l___unused4;
     73 };
     74 
     75 union linux_semun {
     76 	int			 l_val;
     77 	struct linux_semid_ds	*l_buf;
     78 	ushort			*l_array;
     79 	void			*l___buf;	/* For unsupported IPC_INFO */
     80 	void			*l___pad;
     81 };
     82 
     83 /* Pretend the sys_semctl syscall is defined */
     84 #if !defined(__aarch64__) && !defined(__amd64__)
     85 struct linux_sys_semctl_args {
     86 	syscallarg(int) semid;
     87 	syscallarg(int) semnum;
     88 	syscallarg(int) cmd;
     89 	syscallarg(union linux_semun) arg;
     90 };
     91 int linux_sys_semctl(struct lwp *, const struct linux_sys_semctl_args *, register_t *);
     92 #endif
     93 
     94 
     95 #ifdef SYSVSEM
     96 #ifdef _KERNEL
     97 __BEGIN_DECLS
     98 void bsd_to_linux_semid_ds(struct semid_ds *, struct linux_semid_ds *);
     99 void bsd_to_linux_semid64_ds(struct semid_ds *, struct linux_semid64_ds *);
    100 void linux_to_bsd_semid_ds(struct linux_semid_ds *, struct semid_ds *);
    101 void linux_to_bsd_semid64_ds(struct linux_semid64_ds *, struct semid_ds *);
    102 __END_DECLS
    103 #endif	/* !_KERNEL */
    104 #endif	/* !SYSVSEM */
    105 
    106 #endif /* !_LINUX_SEM_H */
    107