The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/compat/linux/common/linux_shm.h

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    1 /*      $NetBSD: linux_shm.h,v 1.12 2008/04/28 20:23:44 martin 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_SHM_H
   33 #define _LINUX_SHM_H
   34 
   35 #include <sys/shm.h>
   36 
   37 /*
   38  * shm segment control structure
   39  */
   40 struct linux_shmid_ds {
   41         struct linux_ipc_perm   l_shm_perm;
   42         int                     l_shm_segsz;
   43         linux_time_t            l_shm_atime;
   44         linux_time_t            l_shm_dtime;
   45         linux_time_t            l_shm_ctime;
   46         ushort                  l_shm_cpid;
   47         ushort                  l_shm_lpid;
   48         short                   l_shm_nattch;
   49         ushort                  l_private1;
   50         void                    *l_private2;
   51         void                    *l_private3;
   52 };
   53 
   54 struct linux_shmid64_ds {
   55         struct linux_ipc64_perm l_shm_perm;
   56         size_t                  l_shm_segsz;
   57         linux_time_t            l_shm_atime;
   58 #ifndef _LP64
   59         u_long                  l____unused1;
   60 #endif
   61         linux_time_t            l_shm_dtime;
   62 #ifndef _LP64
   63         u_long                  l____unused2;
   64 #endif
   65         linux_time_t            l_shm_ctime;
   66 #ifndef _LP64
   67         u_long                  l____unused3;
   68 #endif
   69         int                     l_shm_cpid;
   70         int                     l_shm_lpid;
   71         u_long                  l_shm_nattch;
   72         u_long                  l___unused4;
   73         u_long                  l___unused5;
   74 };
   75 
   76 struct linux_shminfo64 {
   77         u_long                  l_shmmax;
   78         u_long                  l_shmmin;
   79         u_long                  l_shmmni;
   80         u_long                  l_shmseg;
   81         u_long                  l_shmall;
   82         u_long                  l___unused1;
   83         u_long                  l___unused2;
   84         u_long                  l___unused3;
   85         u_long                  l___unused4;
   86 };
   87 
   88 struct linux_shm_info {
   89         int                     l_used_ids;
   90         u_long                  l_shm_tot;
   91         u_long                  l_shm_rss;
   92         u_long                  l_shm_swp;
   93         u_long                  l_swap_attempts;
   94         u_long                  l_swap_successes;
   95 };
   96 
   97 #define LINUX_SHM_RDONLY        0x1000
   98 #define LINUX_SHM_RND           0x2000
   99 #define LINUX_SHM_REMAP         0x4000
  100 
  101 #define LINUX_SHM_LOCK          11
  102 #define LINUX_SHM_UNLOCK        12
  103 #define LINUX_SHM_STAT          13
  104 #define LINUX_SHM_INFO          14
  105 
  106 
  107 /* Pretend the sys_shmat and sys_shmctl syscalls are defined */
  108 struct linux_sys_shmat_args {
  109         syscallarg(int) shmid;
  110         syscallarg(void *) shmaddr;
  111         syscallarg(int) shmflg;
  112         syscallarg(u_long *) raddr;
  113 };
  114 
  115 struct linux_sys_shmctl_args {
  116         syscallarg(int) shmid;
  117         syscallarg(int) cmd;
  118         syscallarg(struct linux_shmid_ds *) buf;
  119 };
  120 
  121 struct linux_sys_shmget_args {
  122         syscallarg(key_t) key;
  123         syscallarg(size_t) size;
  124         syscallarg(int) shmflg;
  125 };
  126 
  127 #ifdef SYSVSHM
  128 #ifdef _KERNEL
  129 __BEGIN_DECLS
  130 int linux_sys_shmget(struct lwp *, const struct linux_sys_shmget_args *, register_t *);
  131 int linux_sys_shmat(struct lwp *, const struct linux_sys_shmat_args *, register_t *);
  132 int linux_sys_shmctl(struct lwp *, const struct linux_sys_shmctl_args *, register_t *);
  133 void linux_to_bsd_shmid_ds(struct linux_shmid_ds *,
  134     struct shmid_ds *);
  135 void linux_to_bsd_shmid64_ds(struct linux_shmid64_ds *,
  136     struct shmid_ds *);
  137 void bsd_to_linux_shmid_ds(struct shmid_ds *,
  138     struct linux_shmid_ds *);
  139 void bsd_to_linux_shmid64_ds(struct shmid_ds *,
  140     struct linux_shmid64_ds *);
  141 __END_DECLS
  142 #endif  /* !_KERNEL */
  143 #endif  /* !SYSVSHM */
  144 
  145 #endif /* !_LINUX_SHM_H */

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