[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

FreeBSD/Linux Kernel Cross Reference
sys/msdosfs/msdosfsmount.h

Version: -  FREEBSD  -  FREEBSD10  -  FREEBSD9  -  FREEBSD92  -  FREEBSD91  -  FREEBSD90  -  FREEBSD8  -  FREEBSD82  -  FREEBSD81  -  FREEBSD80  -  FREEBSD7  -  FREEBSD74  -  FREEBSD73  -  FREEBSD72  -  FREEBSD71  -  FREEBSD70  -  FREEBSD6  -  FREEBSD64  -  FREEBSD63  -  FREEBSD62  -  FREEBSD61  -  FREEBSD60  -  FREEBSD5  -  FREEBSD55  -  FREEBSD54  -  FREEBSD53  -  FREEBSD52  -  FREEBSD51  -  FREEBSD50  -  FREEBSD4  -  FREEBSD3  -  FREEBSD22  -  cheribsd  -  linux-2.6  -  linux-2.4.22  -  MK83  -  MK84  -  PLAN9  -  DFBSD  -  NETBSD  -  NETBSD5  -  NETBSD4  -  NETBSD3  -  NETBSD20  -  OPENBSD  -  xnu-517  -  xnu-792  -  xnu-792.6.70  -  xnu-1228  -  xnu-1456.1.26  -  xnu-1699.24.8  -  xnu-2050.18.24  -  OPENSOLARIS  -  minix-3-1-1  -  FREEBSD-LIBC  -  FREEBSD8-LIBC  -  FREEBSD7-LIBC  -  FREEBSD6-LIBC  -  GLIBC27 
SearchContext: -  none  -  3  -  10 

    1 /* $FreeBSD: src/sys/msdosfs/msdosfsmount.h,v 1.16.2.3 2000/10/27 09:50:24 bde Exp $ */
    2 /*      $NetBSD: msdosfsmount.h,v 1.17 1997/11/17 15:37:07 ws Exp $     */
    3 
    4 /*-
    5  * Copyright (C) 1994, 1995, 1997 Wolfgang Solfrank.
    6  * Copyright (C) 1994, 1995, 1997 TooLs GmbH.
    7  * All rights reserved.
    8  * Original code by Paul Popelka (paulp@uts.amdahl.com) (see below).
    9  *
   10  * Redistribution and use in source and binary forms, with or without
   11  * modification, are permitted provided that the following conditions
   12  * are met:
   13  * 1. Redistributions of source code must retain the above copyright
   14  *    notice, this list of conditions and the following disclaimer.
   15  * 2. Redistributions in binary form must reproduce the above copyright
   16  *    notice, this list of conditions and the following disclaimer in the
   17  *    documentation and/or other materials provided with the distribution.
   18  * 3. All advertising materials mentioning features or use of this software
   19  *    must display the following acknowledgement:
   20  *      This product includes software developed by TooLs GmbH.
   21  * 4. The name of TooLs GmbH may not be used to endorse or promote products
   22  *    derived from this software without specific prior written permission.
   23  *
   24  * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
   25  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   26  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   27  * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   28  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   29  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
   30  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
   31  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
   32  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
   33  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   34  */
   35 /*
   36  * Written by Paul Popelka (paulp@uts.amdahl.com)
   37  *
   38  * You can do anything you want with this software, just don't say you wrote
   39  * it, and don't remove this notice.
   40  *
   41  * This software is provided "as is".
   42  *
   43  * The author supplies this software to be publicly redistributed on the
   44  * understanding that the author is not responsible for the correct
   45  * functioning of this software in any circumstances and is not liable for
   46  * any damages caused by this software.
   47  *
   48  * October 1992
   49  */
   50 
   51 #ifndef _MSDOSFS_MSDOSFSMOUNT_H_
   52 #define _MSDOSFS_MSDOSFSMOUNT_H_
   53 
   54 #ifdef KERNEL
   55 
   56 #ifdef MALLOC_DECLARE
   57 MALLOC_DECLARE(M_MSDOSFSMNT);
   58 #endif
   59 
   60 /*
   61  * Layout of the mount control block for a msdos file system.
   62  */
   63 struct msdosfsmount {
   64         struct mount *pm_mountp;/* vfs mount struct for this fs */
   65         dev_t pm_dev;           /* block special device mounted */
   66         uid_t pm_uid;           /* uid to set as owner of the files */
   67         gid_t pm_gid;           /* gid to set as owner of the files */
   68         mode_t pm_mask;         /* mask to and with file protection bits */
   69         struct vnode *pm_devvp; /* vnode for block device mntd */
   70         struct bpb50 pm_bpb;    /* BIOS parameter blk for this fs */
   71         u_long pm_BlkPerSec;    /* How many DEV_BSIZE blocks fit inside a physical sector */
   72         u_long pm_FATsecs;      /* actual number of fat sectors */
   73         u_long pm_fatblk;       /* block # of first FAT */
   74         u_long pm_rootdirblk;   /* block # (cluster # for FAT32) of root directory number */
   75         u_long pm_rootdirsize;  /* size in blocks (not clusters) */
   76         u_long pm_firstcluster; /* block number of first cluster */
   77         u_long pm_nmbrofclusters;       /* # of clusters in filesystem */
   78         u_long pm_maxcluster;   /* maximum cluster number */
   79         u_long pm_freeclustercount;     /* number of free clusters */
   80         u_long pm_cnshift;      /* shift file offset right this amount to get a cluster number */
   81         u_long pm_crbomask;     /* and a file offset with this mask to get cluster rel offset */
   82         u_long pm_bnshift;      /* shift file offset right this amount to get a block number */
   83         u_long pm_bpcluster;    /* bytes per cluster */
   84         u_long pm_fmod;         /* ~0 if fs is modified, this can rollover to 0 */
   85         u_long pm_fatblocksize; /* size of fat blocks in bytes */
   86         u_long pm_fatblocksec;  /* size of fat blocks in sectors */
   87         u_long pm_fatsize;      /* size of fat in bytes */
   88         u_int32_t pm_fatmask;   /* mask to use for fat numbers */
   89         u_long pm_fsinfo;       /* fsinfo block number */
   90         u_long pm_nxtfree;      /* next free cluster in fsinfo block */
   91         u_int pm_fatmult;       /* these 2 values are used in fat */
   92         u_int pm_fatdiv;        /*      offset computation */
   93         u_int pm_curfat;        /* current fat for FAT32 (0 otherwise) */
   94         u_int *pm_inusemap;     /* ptr to bitmap of in-use clusters */
   95         u_int pm_flags;         /* see below */
   96         struct netexport pm_export;     /* export information */
   97         u_int16_t pm_u2w[128];  /* Local->Unicode table */
   98         u_int8_t  pm_ul[128];   /* Local upper->lower table */
   99         u_int8_t  pm_lu[128];   /* Local lower->upper table */
  100         u_int8_t  pm_d2u[128];  /* DOS->local table */
  101         u_int8_t  pm_u2d[128];  /* Local->DOS table */
  102 };
  103 /* Byte offset in FAT on filesystem pmp, cluster cn */
  104 #define FATOFS(pmp, cn) ((cn) * (pmp)->pm_fatmult / (pmp)->pm_fatdiv)
  105 
  106 
  107 #define VFSTOMSDOSFS(mp)        ((struct msdosfsmount *)mp->mnt_data)
  108 
  109 /* Number of bits in one pm_inusemap item: */
  110 #define N_INUSEBITS     (8 * sizeof(u_int))
  111 
  112 /*
  113  * Shorthand for fields in the bpb contained in the msdosfsmount structure.
  114  */
  115 #define pm_BytesPerSec  pm_bpb.bpbBytesPerSec
  116 #define pm_ResSectors   pm_bpb.bpbResSectors
  117 #define pm_FATs         pm_bpb.bpbFATs
  118 #define pm_RootDirEnts  pm_bpb.bpbRootDirEnts
  119 #define pm_Sectors      pm_bpb.bpbSectors
  120 #define pm_Media        pm_bpb.bpbMedia
  121 #define pm_SecPerTrack  pm_bpb.bpbSecPerTrack
  122 #define pm_Heads        pm_bpb.bpbHeads
  123 #define pm_HiddenSects  pm_bpb.bpbHiddenSecs
  124 #define pm_HugeSectors  pm_bpb.bpbHugeSectors
  125 
  126 /*
  127  * Convert pointer to buffer -> pointer to direntry
  128  */
  129 #define bptoep(pmp, bp, dirofs) \
  130         ((struct direntry *)(((bp)->b_data)     \
  131          + ((dirofs) & (pmp)->pm_crbomask)))
  132 
  133 /*
  134  * Convert block number to cluster number
  135  */
  136 #define de_bn2cn(pmp, bn) \
  137         ((bn) >> ((pmp)->pm_cnshift - (pmp)->pm_bnshift))
  138 
  139 /*
  140  * Convert cluster number to block number
  141  */
  142 #define de_cn2bn(pmp, cn) \
  143         ((cn) << ((pmp)->pm_cnshift - (pmp)->pm_bnshift))
  144 
  145 /*
  146  * Convert file offset to cluster number
  147  */
  148 #define de_cluster(pmp, off) \
  149         ((off) >> (pmp)->pm_cnshift)
  150 
  151 /*
  152  * Clusters required to hold size bytes
  153  */
  154 #define de_clcount(pmp, size) \
  155         (((size) + (pmp)->pm_bpcluster - 1) >> (pmp)->pm_cnshift)
  156 
  157 /*
  158  * Convert file offset to block number
  159  */
  160 #define de_blk(pmp, off) \
  161         (de_cn2bn(pmp, de_cluster((pmp), (off))))
  162 
  163 /*
  164  * Convert cluster number to file offset
  165  */
  166 #define de_cn2off(pmp, cn) \
  167         ((cn) << (pmp)->pm_cnshift)
  168 
  169 /*
  170  * Convert block number to file offset
  171  */
  172 #define de_bn2off(pmp, bn) \
  173         ((bn) << (pmp)->pm_bnshift)
  174 /*
  175  * Map a cluster number into a filesystem relative block number.
  176  */
  177 #define cntobn(pmp, cn) \
  178         (de_cn2bn((pmp), (cn)-CLUST_FIRST) + (pmp)->pm_firstcluster)
  179 
  180 /*
  181  * Calculate block number for directory entry in root dir, offset dirofs
  182  */
  183 #define roottobn(pmp, dirofs) \
  184         (de_blk((pmp), (dirofs)) + (pmp)->pm_rootdirblk)
  185 
  186 /*
  187  * Calculate block number for directory entry at cluster dirclu, offset
  188  * dirofs
  189  */
  190 #define detobn(pmp, dirclu, dirofs) \
  191         ((dirclu) == MSDOSFSROOT \
  192          ? roottobn((pmp), (dirofs)) \
  193          : cntobn((pmp), (dirclu)))
  194 
  195 /*
  196  * Calculate fsinfo block size
  197  */
  198 #define fsi_size(pmp) \
  199         (1024 << ((pmp)->pm_BlkPerSec >> 2))
  200 
  201 int msdosfs_init __P((struct vfsconf *vfsp));
  202 int msdosfs_mountroot __P((void));
  203 
  204 #endif /* KERNEL */
  205 
  206 /*
  207  *  Arguments to mount MSDOS filesystems.
  208  */
  209 struct msdosfs_args {
  210         char    *fspec;         /* blocks special holding the fs to mount */
  211         struct  export_args export;     /* network export information */
  212         uid_t   uid;            /* uid that owns msdosfs files */
  213         gid_t   gid;            /* gid that owns msdosfs files */
  214         mode_t  mask;           /* mask to be applied for msdosfs perms */
  215         int     flags;          /* see below */
  216         int magic;              /* version number */
  217         u_int16_t u2w[128];     /* Local->Unicode table */
  218         u_int8_t  ul[128];      /* Local upper->lower table */
  219         u_int8_t  lu[128];      /* Local lower->upper table */
  220         u_int8_t  d2u[128];     /* DOS->local table */
  221         u_int8_t  u2d[128];     /* Local->DOS table */
  222 };
  223 
  224 /*
  225  * Msdosfs mount options:
  226  */
  227 #define MSDOSFSMNT_SHORTNAME    1       /* Force old DOS short names only */
  228 #define MSDOSFSMNT_LONGNAME     2       /* Force Win'95 long names */
  229 #define MSDOSFSMNT_NOWIN95      4       /* Completely ignore Win95 entries */
  230 #ifndef __FreeBSD__
  231 #define MSDOSFSMNT_GEMDOSFS     8       /* This is a gemdos-flavour */
  232 #endif
  233 #define MSDOSFSMNT_U2WTABLE     0x10    /* Local->Unicode and local<->DOS   */
  234                                         /* tables loaded                    */
  235 #define MSDOSFSMNT_ULTABLE      0x20    /* Local upper<->lower table loaded */
  236 /* All flags above: */
  237 #define MSDOSFSMNT_MNTOPT \
  238         (MSDOSFSMNT_SHORTNAME|MSDOSFSMNT_LONGNAME|MSDOSFSMNT_NOWIN95 \
  239          /*|MSDOSFSMNT_GEMDOSFS*/|MSDOSFSMNT_U2WTABLE|MSDOSFSMNT_ULTABLE)
  240 #define MSDOSFSMNT_RONLY        0x80000000      /* mounted read-only    */
  241 #define MSDOSFSMNT_WAITONFAT    0x40000000      /* mounted synchronous  */
  242 #define MSDOSFS_FATMIRROR       0x20000000      /* FAT is mirrored */
  243 
  244 #define MSDOSFS_ARGSMAGIC       0xe4eff300
  245 
  246 #endif /* !_MSDOSFS_MSDOSFSMOUNT_H_ */

Cache object: 761bce1055f13af5cc8de2700dd2c2f5


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.