| 1 | /* $NetBSD: ufsmount.h,v 1.43 2015/03/27 17:27:56 riastradh Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 1982, 1986, 1989, 1993 |
| 5 | * The Regents of the University of California. 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 | * 3. Neither the name of the University nor the names of its contributors |
| 16 | * may be used to endorse or promote products derived from this software |
| 17 | * without specific prior written permission. |
| 18 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 29 | * SUCH DAMAGE. |
| 30 | * |
| 31 | * @(#)ufsmount.h 8.6 (Berkeley) 3/30/95 |
| 32 | */ |
| 33 | |
| 34 | #ifndef _UFS_UFS_UFSMOUNT_H_ |
| 35 | #define _UFS_UFS_UFSMOUNT_H_ |
| 36 | |
| 37 | #include <sys/mount.h> /* struct export_args30 */ |
| 38 | |
| 39 | /* |
| 40 | * Arguments to mount UFS-based filesystems |
| 41 | */ |
| 42 | struct ufs_args { |
| 43 | char *fspec; /* block special device to mount */ |
| 44 | }; |
| 45 | |
| 46 | /* |
| 47 | * Arguments to mount MFS |
| 48 | */ |
| 49 | struct mfs_args { |
| 50 | char *fspec; /* name to export for statfs */ |
| 51 | struct export_args30 _pad1; /* compat with old userland tools */ |
| 52 | void * base; /* base of file system in memory */ |
| 53 | u_long size; /* size of file system */ |
| 54 | }; |
| 55 | |
| 56 | #ifdef _KERNEL |
| 57 | |
| 58 | #if defined(_KERNEL_OPT) |
| 59 | #include "opt_ffs.h" |
| 60 | #endif |
| 61 | |
| 62 | #include <sys/mutex.h> |
| 63 | |
| 64 | #include <ufs/ufs/extattr.h> |
| 65 | #include <ufs/ufs/quota.h> |
| 66 | |
| 67 | struct buf; |
| 68 | struct inode; |
| 69 | struct nameidata; |
| 70 | struct timeval; |
| 71 | struct uio; |
| 72 | struct vnode; |
| 73 | |
| 74 | /* This structure describes the UFS specific mount structure data. */ |
| 75 | struct ufsmount { |
| 76 | struct mount *um_mountp; /* filesystem vfs structure */ |
| 77 | dev_t um_dev; /* device mounted */ |
| 78 | struct vnode *um_devvp; /* block device mounted vnode */ |
| 79 | u_long um_fstype; |
| 80 | u_int32_t um_flags; /* UFS-specific flags - see below */ |
| 81 | union { /* pointer to superblock */ |
| 82 | struct fs *fs; /* FFS */ |
| 83 | struct lfs *lfs; /* LFS */ |
| 84 | struct m_ext2fs *e2fs; /* EXT2FS */ |
| 85 | struct chfs_mount *chfs; /* CHFS */ |
| 86 | } ufsmount_u; |
| 87 | #define um_fs ufsmount_u.fs |
| 88 | #define um_lfs ufsmount_u.lfs |
| 89 | #define um_e2fs ufsmount_u.e2fs |
| 90 | #define um_e2fsb ufsmount_u.e2fs->s_es |
| 91 | #define um_chfs ufsmount_u.chfs |
| 92 | |
| 93 | /* Extended attribute information. */ |
| 94 | struct ufs_extattr_per_mount um_extattr; |
| 95 | |
| 96 | struct vnode *um_quotas[MAXQUOTAS]; /* pointer to quota files */ |
| 97 | kauth_cred_t um_cred[MAXQUOTAS]; /* quota file access cred */ |
| 98 | u_long um_nindir; /* indirect ptrs per block */ |
| 99 | u_long um_lognindir; /* log2 of um_nindir */ |
| 100 | u_long um_bptrtodb; /* indir ptr to disk block */ |
| 101 | u_long um_seqinc; /* inc between seq blocks */ |
| 102 | kmutex_t um_lock; /* lock on global data */ |
| 103 | union { |
| 104 | struct um_q1 { |
| 105 | time_t q1_btime[MAXQUOTAS]; /* block quota time limit */ |
| 106 | time_t q1_itime[MAXQUOTAS]; /* inode quota time limit */ |
| 107 | char q1_qflags[MAXQUOTAS]; /* quota specific flags */ |
| 108 | } um_q1; |
| 109 | struct um_q2 { |
| 110 | uint64_t q2_bsize; /* block size of quota file */ |
| 111 | uint64_t q2_bmask; /* mask for above */ |
| 112 | } um_q2; |
| 113 | } um_q; |
| 114 | #define umq1_btime um_q.um_q1.q1_btime |
| 115 | #define umq1_itime um_q.um_q1.q1_itime |
| 116 | #define umq1_qflags um_q.um_q1.q1_qflags |
| 117 | #define umq2_bsize um_q.um_q2.q2_bsize |
| 118 | #define umq2_bmask um_q.um_q2.q2_bmask |
| 119 | |
| 120 | void *um_oldfscompat; /* save 4.2 rotbl */ |
| 121 | int um_maxsymlinklen; |
| 122 | int um_dirblksiz; |
| 123 | u_int64_t um_maxfilesize; |
| 124 | void *um_snapinfo; /* snapshot private data */ |
| 125 | |
| 126 | const struct ufs_ops *um_ops; |
| 127 | |
| 128 | void *um_discarddata; |
| 129 | }; |
| 130 | |
| 131 | struct ufs_ops { |
| 132 | void (*uo_itimes)(struct inode *ip, const struct timespec *, |
| 133 | const struct timespec *, const struct timespec *); |
| 134 | int (*uo_update)(struct vnode *, const struct timespec *, |
| 135 | const struct timespec *, int); |
| 136 | int (*uo_truncate)(struct vnode *, off_t, int, kauth_cred_t); |
| 137 | int (*uo_balloc)(struct vnode *, off_t, int, kauth_cred_t, int, |
| 138 | struct buf **); |
| 139 | void (*uo_snapgone)(struct vnode *); |
| 140 | int (*uo_bufrd)(struct vnode *, struct uio *, int, kauth_cred_t); |
| 141 | int (*uo_bufwr)(struct vnode *, struct uio *, int, kauth_cred_t); |
| 142 | }; |
| 143 | |
| 144 | #define UFS_OPS(vp) (VFSTOUFS((vp)->v_mount)->um_ops) |
| 145 | |
| 146 | #define UFS_ITIMES(vp, acc, mod, cre) \ |
| 147 | (*UFS_OPS(vp)->uo_itimes)(VTOI(vp), (acc), (mod), (cre)) |
| 148 | #define UFS_UPDATE(vp, acc, mod, flags) \ |
| 149 | (*UFS_OPS(vp)->uo_update)((vp), (acc), (mod), (flags)) |
| 150 | #define UFS_TRUNCATE(vp, off, flags, cr) \ |
| 151 | (*UFS_OPS(vp)->uo_truncate)((vp), (off), (flags), (cr)) |
| 152 | #define UFS_BALLOC(vp, off, size, cr, flags, bpp) \ |
| 153 | (*UFS_OPS(vp)->uo_balloc)((vp), (off), (size), (cr), (flags), (bpp)) |
| 154 | #define UFS_SNAPGONE(vp) \ |
| 155 | (*UFS_OPS(vp)->uo_snapgone)((vp)) |
| 156 | #define UFS_BUFRD(vp, uio, ioflag, cred) \ |
| 157 | (*UFS_OPS(vp)->uo_bufrd)((vp), (uio), (ioflag), (cred)) |
| 158 | #define UFS_BUFWR(vp, uio, ioflag, cred) \ |
| 159 | (*UFS_OPS(vp)->uo_bufwr)((vp), (uio), (ioflag), (cred)) |
| 160 | |
| 161 | /* UFS-specific flags */ |
| 162 | #define UFS_NEEDSWAP 0x01 /* filesystem metadata need byte-swapping */ |
| 163 | #define UFS_ISAPPLEUFS 0x02 /* filesystem is Apple UFS */ |
| 164 | #define UFS_QUOTA 0x04 /* filesystem has QUOTA (v1) */ |
| 165 | #define UFS_QUOTA2 0x08 /* filesystem has QUOTA2 */ |
| 166 | |
| 167 | /* |
| 168 | * Filesystem types |
| 169 | */ |
| 170 | #define UFS1 1 |
| 171 | #define UFS2 2 |
| 172 | |
| 173 | |
| 174 | /* |
| 175 | * Flags describing the state of quotas. |
| 176 | */ |
| 177 | #define QTF_OPENING 0x01 /* Q_QUOTAON in progress */ |
| 178 | #define QTF_CLOSING 0x02 /* Q_QUOTAOFF in progress */ |
| 179 | |
| 180 | /* Convert mount ptr to ufsmount ptr. */ |
| 181 | #define VFSTOUFS(mp) ((struct ufsmount *)((mp)->mnt_data)) |
| 182 | |
| 183 | #ifdef APPLE_UFS |
| 184 | #define UFS_MPISAPPLEUFS(ump) ((ump)->um_flags & UFS_ISAPPLEUFS) |
| 185 | #else |
| 186 | #define UFS_MPISAPPLEUFS(ump) (0) |
| 187 | #endif |
| 188 | |
| 189 | /* |
| 190 | * Macros to access file system parameters in the ufsmount structure. |
| 191 | * Used by ufs_bmap. |
| 192 | */ |
| 193 | #define MNINDIR(ump) ((ump)->um_nindir) |
| 194 | #define blkptrtodb(ump, b) ((b) << (ump)->um_bptrtodb) |
| 195 | |
| 196 | /* |
| 197 | * Predicate for byte-swapping support. |
| 198 | */ |
| 199 | #define FSFMT(vp) (((vp)->v_mount->mnt_iflag & IMNT_DTYPE) == 0) |
| 200 | |
| 201 | #endif /* _KERNEL */ |
| 202 | |
| 203 | #endif /* !_UFS_UFS_UFSMOUNT_H_ */ |
| 204 | |