1 /* $NetBSD: ufsmount.h,v 1.44 2022/11/17 06:40:40 chs 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 #define UFS_EA 0x10 /* UFS2 with extattrs */ 167 168 /* 169 * Filesystem types 170 */ 171 #define UFS1 1 172 #define UFS2 2 173 174 175 /* 176 * Flags describing the state of quotas. 177 */ 178 #define QTF_OPENING 0x01 /* Q_QUOTAON in progress */ 179 #define QTF_CLOSING 0x02 /* Q_QUOTAOFF in progress */ 180 181 /* Convert mount ptr to ufsmount ptr. */ 182 #define VFSTOUFS(mp) ((struct ufsmount *)((mp)->mnt_data)) 183 184 #ifdef APPLE_UFS 185 #define UFS_MPISAPPLEUFS(ump) ((ump)->um_flags & UFS_ISAPPLEUFS) 186 #else 187 #define UFS_MPISAPPLEUFS(ump) (0) 188 #endif 189 190 /* 191 * Macros to access file system parameters in the ufsmount structure. 192 * Used by ufs_bmap. 193 */ 194 #define MNINDIR(ump) ((ump)->um_nindir) 195 #define blkptrtodb(ump, b) ((b) << (ump)->um_bptrtodb) 196 197 /* 198 * Predicate for byte-swapping support. 199 */ 200 #define FSFMT(vp) (((vp)->v_mount->mnt_iflag & IMNT_DTYPE) == 0) 201 202 #endif /* _KERNEL */ 203 204 #endif /* !_UFS_UFS_UFSMOUNT_H_ */ 205