lib/libspl/include/os/linux/sys/mount.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or https://opensource.org/licenses/CDDL-1.0.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #include_next <sys/mount.h>
  28
  29 #ifndef _LIBSPL_SYS_MOUNT_H
  30 #define _LIBSPL_SYS_MOUNT_H
  31
  32 #include <assert.h>
  33 #include <string.h>
  34 #include <stdlib.h>
  35
  36 /*
  37  * Some old glibc headers don't define BLKGETSIZE64
  38  * and we don't want to require the kernel headers
  39  */
  40 #if !defined(BLKGETSIZE64)
  41 #define BLKGETSIZE64            _IOR(0x12, 114, size_t)
  42 #endif
  43
  44 /*
  45  * Some old glibc headers don't correctly define MS_DIRSYNC and
  46  * instead use the enum name S_WRITE.  When using these older
  47  * headers define MS_DIRSYNC to be S_WRITE.
  48  */
  49 #if !defined(MS_DIRSYNC)
  50 #define MS_DIRSYNC              S_WRITE
  51 #endif
  52
  53 /*
  54  * Some old glibc headers don't correctly define MS_POSIXACL and
  55  * instead leave it undefined.  When using these older headers define
  56  * MS_POSIXACL to the reserved value of (1<<16).
  57  */
  58 #if !defined(MS_POSIXACL)
  59 #define MS_POSIXACL             (1<<16)
  60 #endif
  61
  62 #define MS_USERS        (MS_NOEXEC|MS_NOSUID|MS_NODEV)
  63 #define MS_OWNER        (MS_NOSUID|MS_NODEV)
  64 #define MS_GROUP        (MS_NOSUID|MS_NODEV)
  65 #define MS_COMMENT      0
  66
  67 /*
  68  * Older glibc <sys/mount.h> headers did not define all the available
  69  * umount2(2) flags.  Both MNT_FORCE and MNT_DETACH are supported in the
  70  * kernel back to 2.4.11 so we define them correctly if they are missing.
  71  */
  72 #ifdef MNT_FORCE
  73 #define MS_FORCE        MNT_FORCE
  74 #else
  75 #define MS_FORCE        0x00000001
  76 #endif /* MNT_FORCE */
  77
  78 #ifdef MNT_DETACH
  79 #define MS_DETACH       MNT_DETACH
  80 #else
  81 #define MS_DETACH       0x00000002
  82 #endif /* MNT_DETACH */
  83
  84 /*
  85  * Overlay mount is default in Linux, but for solaris/zfs
  86  * compatibility, MS_OVERLAY is defined to explicitly have the user
  87  * provide a flag (-O) to mount over a non empty directory.
  88  */
  89 #define MS_OVERLAY      0x00000004
  90
  91 /*
  92  * MS_CRYPT indicates that encryption keys should be loaded if they are not
  93  * already available. This is not defined in glibc, but it is never seen by
  94  * the kernel so it will not cause any problems.
  95  */
  96 #define MS_CRYPT        0x00000008
  97
  98 #endif /* _LIBSPL_SYS_MOUNT_H */