1 /* $NetBSD: vfs.h,v 1.5 2018/05/28 21:05:10 chs Exp $ */ 2 3 /*- 4 * Copyright (c) 2007 Pawel Jakub Dawidek <pjd@FreeBSD.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD: head/sys/cddl/compat/opensolaris/sys/vfs.h 297513 2016-04-02 16:25:46Z avg $ 29 */ 30 31 #ifndef _OPENSOLARIS_SYS_VFS_H_ 32 #define _OPENSOLARIS_SYS_VFS_H_ 33 34 #include <sys/param.h> 35 36 #ifdef _KERNEL 37 38 #include <sys/mount.h> 39 #include <sys/vnode.h> 40 41 #define rootdir rootvnode 42 43 typedef struct mount vfs_t; 44 45 #define vfs_flag mnt_flag 46 #define vfs_data mnt_data 47 #define vfs_count mnt_refcnt 48 #define vfs_bsize mnt_stat.f_bsize 49 #define vfs_resource mnt_stat.f_mntfromname 50 51 #define v_flag v_vflag 52 #define v_vfsp v_mount 53 54 #define VFS_RDONLY MNT_RDONLY 55 #define VFS_NOSETUID MNT_NOSUID 56 #define VFS_NOEXEC MNT_NOEXEC 57 58 #define fs_vscan(vp, cr, async) (0) 59 60 #define VROOT VV_ROOT 61 62 /* 63 * Structure defining a mount option for a filesystem. 64 * option names are found in mntent.h 65 */ 66 typedef struct mntopt { 67 char *mo_name; /* option name */ 68 char **mo_cancel; /* list of options cancelled by this one */ 69 char *mo_arg; /* argument string for this option */ 70 int mo_flags; /* flags for this mount option */ 71 void *mo_data; /* filesystem specific data */ 72 } mntopt_t; 73 74 /* 75 * Flags that apply to mount options 76 */ 77 78 #define MO_SET 0x01 /* option is set */ 79 #define MO_NODISPLAY 0x02 /* option not listed in mnttab */ 80 #define MO_HASVALUE 0x04 /* option takes a value */ 81 #define MO_IGNORE 0x08 /* option ignored by parser */ 82 #define MO_DEFAULT MO_SET /* option is on by default */ 83 #define MO_TAG 0x10 /* flags a tag set by user program */ 84 #define MO_EMPTY 0x20 /* empty space in option table */ 85 86 #define VFS_NOFORCEOPT 0x01 /* honor MO_IGNORE (don't set option) */ 87 #define VFS_DISPLAY 0x02 /* Turn off MO_NODISPLAY bit for opt */ 88 #define VFS_NODISPLAY 0x04 /* Turn on MO_NODISPLAY bit for opt */ 89 #define VFS_CREATEOPT 0x08 /* Create the opt if it's not there */ 90 #define VFS_UNMOUNTED 0x100 /* file system has been unmounted */ 91 92 /* 93 * Structure holding mount option strings for the mounted file system. 94 */ 95 typedef struct mntopts { 96 uint_t mo_count; /* number of entries in table */ 97 mntopt_t *mo_list; /* list of mount options */ 98 } mntopts_t; 99 100 /* 101 * Argument structure for mount(2). 102 * 103 * Flags are defined in <sys/mount.h>. 104 * 105 * Note that if the MS_SYSSPACE bit is set in flags, the pointer fields in 106 * this structure are to be interpreted as kernel addresses. File systems 107 * should be prepared for this possibility. 108 */ 109 struct mounta { 110 char fspec[MAXNAMELEN - 1]; 111 char dataptr[MAXPATHLEN]; 112 char optptr[MAXPATHLEN]; 113 char *fstype; /* Unused */ 114 int mflag; 115 int datalen; 116 int optlen; 117 int flags; /* Unused */ 118 }; 119 120 #define vfs_devismounted(dev) 0 121 122 void vfs_setmntopt(vfs_t *vfsp, const char *name, const char *arg, 123 int flags __unused); 124 void vfs_clearmntopt(vfs_t *vfsp, const char *name); 125 int vfs_optionisset(const vfs_t *vfsp, const char *opt, char **argp); 126 int mount_snapshot(kthread_t *td, vnode_t **vpp, const char *fstype, 127 char *fspath, char *fspec, int fsflags); 128 129 typedef uint64_t vfs_feature_t; 130 131 #define VFSFT_XVATTR 0x100000001 /* Supports xvattr for attrs */ 132 #define VFSFT_CASEINSENSITIVE 0x100000002 /* Supports case-insensitive */ 133 #define VFSFT_NOCASESENSITIVE 0x100000004 /* NOT case-sensitive */ 134 #define VFSFT_DIRENTFLAGS 0x100000008 /* Supports dirent flags */ 135 #define VFSFT_ACLONCREATE 0x100000010 /* Supports ACL on create */ 136 #define VFSFT_ACEMASKONACCESS 0x100000020 /* Can use ACEMASK for access */ 137 #define VFSFT_SYSATTR_VIEWS 0x100000040 /* Supports sysattr view i/f */ 138 #define VFSFT_ACCESS_FILTER 0x100000080 /* dirents filtered by access */ 139 #define VFSFT_REPARSE 0x100000100 /* Supports reparse point */ 140 #define VFSFT_ZEROCOPY_SUPPORTED 0x100000200 141 /* Support loaning /returning cache buffer */ 142 143 #define vfs_set_feature(vfsp, feature) do { } while (0) 144 #define vfs_clear_feature(vfsp, feature) do { } while (0) 145 #define vfs_has_feature(vfsp, feature) (0) 146 147 #define VFS_HOLD(vfsp) do { \ 148 /* XXXNETBSD nothing */ \ 149 } while (0) 150 #define VFS_RELE(vfsp) do { \ 151 /* XXXNETBSD nothing */ \ 152 } while (0) 153 154 #endif /* _KERNEL */ 155 156 #endif /* _OPENSOLARIS_SYS_VFS_H_ */ 157