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Annotation of src/sys/ufs/ufs/ufsmount.h, Revision 1.40.2.1

1.40.2.1! rmind       1: /*     $NetBSD$        */
1.4       mycroft     2:
1.1       mycroft     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.
1.14      agc        15:  * 3. Neither the name of the University nor the names of its contributors
1.1       mycroft    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:  *
1.6       fvdl       31:  *     @(#)ufsmount.h  8.6 (Berkeley) 3/30/95
1.1       mycroft    32:  */
                     33:
1.10      matt       34: #ifndef _UFS_UFS_UFSMOUNT_H_
                     35: #define _UFS_UFS_UFSMOUNT_H_
                     36:
1.32      pooka      37: #include <sys/mount.h> /* struct export_args30 */
                     38:
1.6       fvdl       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 */
1.21      jmmv       51:        struct  export_args30 _pad1; /* compat with old userland tools */
1.28      christos   52:        void *  base;                   /* base of file system in memory */
1.6       fvdl       53:        u_long  size;                   /* size of file system */
                     54: };
                     55:
                     56: #ifdef _KERNEL
1.9       dbj        57:
                     58: #if defined(_KERNEL_OPT)
                     59: #include "opt_ffs.h"
                     60: #endif
                     61:
1.29      ad         62: #include <sys/mutex.h>
                     63:
1.19      thorpej    64: #include <ufs/ufs/extattr.h>
1.30      pooka      65: #include <ufs/ufs/quota.h>
1.19      thorpej    66:
1.1       mycroft    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 */
1.11      fvdl       79:        u_long  um_fstype;
1.7       bouyer     80:        u_int32_t um_flags;                     /* UFS-specific flags - see below */
1.1       mycroft    81:        union {                                 /* pointer to superblock */
1.5       bouyer     82:                struct  fs *fs;                 /* FFS */
1.1       mycroft    83:                struct  lfs *lfs;               /* LFS */
1.37      ahoka      84:                struct  m_ext2fs *e2fs;         /* EXT2FS */
                     85:                struct  chfs_mount *chfs;       /* CHFS */
1.1       mycroft    86:        } ufsmount_u;
                     87: #define        um_fs   ufsmount_u.fs
                     88: #define        um_lfs  ufsmount_u.lfs
1.5       bouyer     89: #define um_e2fs        ufsmount_u.e2fs
                     90: #define um_e2fsb ufsmount_u.e2fs->s_es
1.37      ahoka      91: #define um_chfs        ufsmount_u.chfs
1.3       mycroft    92:
1.19      thorpej    93:        /* Extended attribute information. */
                     94:        struct ufs_extattr_per_mount um_extattr;
                     95:
1.1       mycroft    96:        struct  vnode *um_quotas[MAXQUOTAS];    /* pointer to quota files */
1.27      elad       97:        kauth_cred_t   um_cred[MAXQUOTAS];      /* quota file access cred */
1.1       mycroft    98:        u_long  um_nindir;                      /* indirect ptrs per block */
1.8       chs        99:        u_long  um_lognindir;                   /* log2 of um_nindir */
1.1       mycroft   100:        u_long  um_bptrtodb;                    /* indir ptr to disk block */
                    101:        u_long  um_seqinc;                      /* inc between seq blocks */
1.29      ad        102:        kmutex_t um_lock;                       /* lock on global data */
1.36      bouyer    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:
1.16      hannken   120:        void    *um_oldfscompat;                /* save 4.2 rotbl */
1.17      mycroft   121:        int     um_maxsymlinklen;
                    122:        int     um_dirblksiz;
1.22      yamt      123:        u_int64_t um_maxfilesize;
1.34      hannken   124:        void    *um_snapinfo;                   /* snapshot private data */
1.23      yamt      125:
                    126:        const struct ufs_ops *um_ops;
1.39      drochner  127:
                    128:        void *um_discarddata;
1.23      yamt      129: };
                    130:
                    131: struct ufs_ops {
                    132:        void (*uo_itimes)(struct inode *ip, const struct timespec *,
                    133:            const struct timespec *, const struct timespec *);
1.24      yamt      134:        int (*uo_update)(struct vnode *, const struct timespec *,
                    135:            const struct timespec *, int);
1.33      pooka     136:        int (*uo_truncate)(struct vnode *, off_t, int, kauth_cred_t);
1.27      elad      137:        int (*uo_valloc)(struct vnode *, int, kauth_cred_t, struct vnode **);
1.24      yamt      138:        int (*uo_vfree)(struct vnode *, ino_t, int);
1.27      elad      139:        int (*uo_balloc)(struct vnode *, off_t, int, kauth_cred_t, int,
1.24      yamt      140:            struct buf **);
1.40      hannken   141:         void (*uo_snapgone)(struct vnode *);
1.1       mycroft   142: };
1.7       bouyer    143:
1.24      yamt      144: #define        UFS_OPS(vp)     (VFSTOUFS((vp)->v_mount)->um_ops)
                    145:
1.23      yamt      146: #define        UFS_ITIMES(vp, acc, mod, cre) \
1.24      yamt      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))
1.33      pooka     150: #define        UFS_TRUNCATE(vp, off, flags, cr) \
                    151:        (*UFS_OPS(vp)->uo_truncate)((vp), (off), (flags), (cr))
1.24      yamt      152: #define        UFS_VALLOC(vp, mode, cr, vpp) \
                    153:        (*UFS_OPS(vp)->uo_valloc)((vp), (mode), (cr), (vpp))
                    154: #define        UFS_VFREE(vp, ino, mode) \
                    155:        (*UFS_OPS(vp)->uo_vfree)((vp), (ino), (mode))
                    156: #define        UFS_BALLOC(vp, off, size, cr, flags, bpp) \
                    157:        (*UFS_OPS(vp)->uo_balloc)((vp), (off), (size), (cr), (flags), (bpp))
1.40      hannken   158: #define        UFS_SNAPGONE(vp) \
                    159:        (*UFS_OPS(vp)->uo_snapgone)((vp))
1.23      yamt      160:
1.7       bouyer    161: /* UFS-specific flags */
                    162: #define UFS_NEEDSWAP   0x01    /* filesystem metadata need byte-swapping */
1.9       dbj       163: #define UFS_ISAPPLEUFS 0x02    /* filesystem is Apple UFS */
1.36      bouyer    164: #define UFS_QUOTA      0x04    /* filesystem has QUOTA (v1) */
                    165: #define UFS_QUOTA2     0x08    /* filesystem has QUOTA2 */
1.11      fvdl      166:
                    167: /*
                    168:  * Filesystem types
                    169:  */
                    170: #define UFS1  1
                    171: #define UFS2  2
                    172:
1.3       mycroft   173:
1.1       mycroft   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))
1.9       dbj       182:
                    183: #ifdef APPLE_UFS
1.17      mycroft   184: #define UFS_MPISAPPLEUFS(ump)  ((ump)->um_flags & UFS_ISAPPLEUFS)
1.9       dbj       185: #else
1.17      mycroft   186: #define UFS_MPISAPPLEUFS(ump)  (0)
1.9       dbj       187: #endif
1.1       mycroft   188:
                    189: /*
                    190:  * Macros to access file system parameters in the ufsmount structure.
                    191:  * Used by ufs_bmap.
                    192:  */
1.3       mycroft   193: #define MNINDIR(ump)                   ((ump)->um_nindir)
                    194: #define        blkptrtodb(ump, b)              ((b) << (ump)->um_bptrtodb)
1.38      riastrad  195:
                    196: /*
                    197:  * Predicate for byte-swapping support.
                    198:  */
                    199: #define        FSFMT(vp)       (((vp)->v_mount->mnt_iflag & IMNT_DTYPE) == 0)
                    200:
1.6       fvdl      201: #endif /* _KERNEL */
1.10      matt      202:
                    203: #endif /* !_UFS_UFS_UFSMOUNT_H_ */

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