1 /* $NetBSD: ufsmount.h,v 1.41 2013/08/11 04:36:17 dholland 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 #if !defined(__minix) 47 /* 48 * Arguments to mount MFS 49 */ 50 struct mfs_args { 51 char *fspec; /* name to export for statfs */ 52 struct export_args30 _pad1; /* compat with old userland tools */ 53 void * base; /* base of file system in memory */ 54 u_long size; /* size of file system */ 55 }; 56 #endif /* !defined(__minix) */ 57 58 #ifdef _KERNEL 59 60 #if defined(_KERNEL_OPT) 61 #include "opt_ffs.h" 62 #endif 63 64 #include <sys/mutex.h> 65 66 #include <ufs/ufs/extattr.h> 67 #include <ufs/ufs/quota.h> 68 69 struct buf; 70 struct inode; 71 struct nameidata; 72 struct timeval; 73 struct uio; 74 struct vnode; 75 76 /* This structure describes the UFS specific mount structure data. */ 77 struct ufsmount { 78 struct mount *um_mountp; /* filesystem vfs structure */ 79 dev_t um_dev; /* device mounted */ 80 struct vnode *um_devvp; /* block device mounted vnode */ 81 u_long um_fstype; 82 u_int32_t um_flags; /* UFS-specific flags - see below */ 83 union { /* pointer to superblock */ 84 struct fs *fs; /* FFS */ 85 struct lfs *lfs; /* LFS */ 86 struct m_ext2fs *e2fs; /* EXT2FS */ 87 struct chfs_mount *chfs; /* CHFS */ 88 } ufsmount_u; 89 #define um_fs ufsmount_u.fs 90 #define um_lfs ufsmount_u.lfs 91 #define um_e2fs ufsmount_u.e2fs 92 #define um_e2fsb ufsmount_u.e2fs->s_es 93 #define um_chfs ufsmount_u.chfs 94 95 /* Extended attribute information. */ 96 struct ufs_extattr_per_mount um_extattr; 97 98 struct vnode *um_quotas[MAXQUOTAS]; /* pointer to quota files */ 99 kauth_cred_t um_cred[MAXQUOTAS]; /* quota file access cred */ 100 u_long um_nindir; /* indirect ptrs per block */ 101 u_long um_lognindir; /* log2 of um_nindir */ 102 u_long um_bptrtodb; /* indir ptr to disk block */ 103 u_long um_seqinc; /* inc between seq blocks */ 104 kmutex_t um_lock; /* lock on global data */ 105 union { 106 struct um_q1 { 107 time_t q1_btime[MAXQUOTAS]; /* block quota time limit */ 108 time_t q1_itime[MAXQUOTAS]; /* inode quota time limit */ 109 char q1_qflags[MAXQUOTAS]; /* quota specific flags */ 110 } um_q1; 111 struct um_q2 { 112 uint64_t q2_bsize; /* block size of quota file */ 113 uint64_t q2_bmask; /* mask for above */ 114 } um_q2; 115 } um_q; 116 #define umq1_btime um_q.um_q1.q1_btime 117 #define umq1_itime um_q.um_q1.q1_itime 118 #define umq1_qflags um_q.um_q1.q1_qflags 119 #define umq2_bsize um_q.um_q2.q2_bsize 120 #define umq2_bmask um_q.um_q2.q2_bmask 121 122 void *um_oldfscompat; /* save 4.2 rotbl */ 123 int um_maxsymlinklen; 124 int um_dirblksiz; 125 u_int64_t um_maxfilesize; 126 void *um_snapinfo; /* snapshot private data */ 127 128 const struct ufs_ops *um_ops; 129 130 void *um_discarddata; 131 }; 132 133 struct ufs_ops { 134 void (*uo_itimes)(struct inode *ip, const struct timespec *, 135 const struct timespec *, const struct timespec *); 136 int (*uo_update)(struct vnode *, const struct timespec *, 137 const struct timespec *, int); 138 int (*uo_truncate)(struct vnode *, off_t, int, kauth_cred_t); 139 int (*uo_valloc)(struct vnode *, int, kauth_cred_t, struct vnode **); 140 int (*uo_vfree)(struct vnode *, ino_t, int); 141 int (*uo_balloc)(struct vnode *, off_t, int, kauth_cred_t, int, 142 struct buf **); 143 void (*uo_snapgone)(struct vnode *); 144 }; 145 146 #define UFS_OPS(vp) (VFSTOUFS((vp)->v_mount)->um_ops) 147 148 #define UFS_ITIMES(vp, acc, mod, cre) \ 149 (*UFS_OPS(vp)->uo_itimes)(VTOI(vp), (acc), (mod), (cre)) 150 #define UFS_UPDATE(vp, acc, mod, flags) \ 151 (*UFS_OPS(vp)->uo_update)((vp), (acc), (mod), (flags)) 152 #define UFS_TRUNCATE(vp, off, flags, cr) \ 153 (*UFS_OPS(vp)->uo_truncate)((vp), (off), (flags), (cr)) 154 #define UFS_VALLOC(vp, mode, cr, vpp) \ 155 (*UFS_OPS(vp)->uo_valloc)((vp), (mode), (cr), (vpp)) 156 #define UFS_VFREE(vp, ino, mode) \ 157 (*UFS_OPS(vp)->uo_vfree)((vp), (ino), (mode)) 158 #define UFS_BALLOC(vp, off, size, cr, flags, bpp) \ 159 (*UFS_OPS(vp)->uo_balloc)((vp), (off), (size), (cr), (flags), (bpp)) 160 #define UFS_SNAPGONE(vp) \ 161 (*UFS_OPS(vp)->uo_snapgone)((vp)) 162 163 /* UFS-specific flags */ 164 #define UFS_NEEDSWAP 0x01 /* filesystem metadata need byte-swapping */ 165 #define UFS_ISAPPLEUFS 0x02 /* filesystem is Apple UFS */ 166 #define UFS_QUOTA 0x04 /* filesystem has QUOTA (v1) */ 167 #define UFS_QUOTA2 0x08 /* filesystem has QUOTA2 */ 168 169 /* 170 * Filesystem types 171 */ 172 #define UFS1 1 173 #define UFS2 2 174 175 176 /* 177 * Flags describing the state of quotas. 178 */ 179 #define QTF_OPENING 0x01 /* Q_QUOTAON in progress */ 180 #define QTF_CLOSING 0x02 /* Q_QUOTAOFF in progress */ 181 182 /* Convert mount ptr to ufsmount ptr. */ 183 #define VFSTOUFS(mp) ((struct ufsmount *)((mp)->mnt_data)) 184 185 #ifdef APPLE_UFS 186 #define UFS_MPISAPPLEUFS(ump) ((ump)->um_flags & UFS_ISAPPLEUFS) 187 #else 188 #define UFS_MPISAPPLEUFS(ump) (0) 189 #endif 190 191 /* 192 * Macros to access file system parameters in the ufsmount structure. 193 * Used by ufs_bmap. 194 */ 195 #define MNINDIR(ump) ((ump)->um_nindir) 196 #define blkptrtodb(ump, b) ((b) << (ump)->um_bptrtodb) 197 198 /* 199 * Predicate for byte-swapping support. 200 */ 201 #define FSFMT(vp) (((vp)->v_mount->mnt_iflag & IMNT_DTYPE) == 0) 202 203 #endif /* _KERNEL */ 204 205 #endif /* !_UFS_UFS_UFSMOUNT_H_ */ 206