repair/globals.h

   1 /*
   2  * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
   3  * All Rights Reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it would be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write the Free Software Foundation,
  16  * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  17  */
  18
  19 #ifndef _XFS_REPAIR_GLOBAL_H
  20 #define _XFS_REPAIR_GLOBAL_H
  21
  22 #ifndef EXTERN
  23 #define EXTERN extern
  24 #endif
  25
  26 /* useful macros */
  27
  28 #define rounddown(x, y) (((x)/(y))*(y))
  29
  30 /* error flags */
  31
  32 #define XR_OK                   0       /* good */
  33 #define XR_BAD_MAGIC            1       /* bad magic number */
  34 #define XR_BAD_BLOCKSIZE        2       /* bad block size */
  35 #define XR_BAD_BLOCKLOG         3       /* bad sb_blocklog field */
  36 #define XR_BAD_VERSION          4       /* bad version number */
  37 #define XR_BAD_INPROGRESS       5       /* in progress set */
  38 #define XR_BAD_FS_SIZE_DATA     6       /* ag sizes, number, fs size mismatch */
  39 #define XR_BAD_INO_SIZE_DATA    7       /* bad inode size or perblock fields */
  40 #define XR_BAD_SECT_SIZE_DATA   8       /* bad sector size info */
  41 #define XR_AGF_GEO_MISMATCH     9       /* agf info conflicts with sb */
  42 #define XR_AGI_GEO_MISMATCH     10      /* agf info conflicts with sb */
  43 #define XR_SB_GEO_MISMATCH      11      /* sb geo conflicts with fs sb geo */
  44 #define XR_EOF                  12      /* seeked beyond EOF */
  45 #define XR_BAD_RT_GEO_DATA      13      /* realtime geometry inconsistent */
  46 #define XR_BAD_INO_MAX_PCT      14      /* max % of inodes > 100% */
  47 #define XR_BAD_INO_ALIGN        15      /* bad inode alignment value */
  48 #define XR_INSUFF_SEC_SB        16      /* not enough matching secondary sbs */
  49 #define XR_BAD_SB_UNIT          17      /* bad stripe unit */
  50 #define XR_BAD_SB_WIDTH         18      /* bad stripe width */
  51 #define XR_BAD_SVN              19      /* bad shared version number */
  52 #define XR_BAD_ERR_CODE         20      /* Bad error code */
  53
  54 /* XFS filesystem (il)legal values */
  55
  56 #define XR_LOG2BSIZE_MIN        9       /* min/max fs blocksize (log2) */
  57 #define XR_LOG2BSIZE_MAX        16      /* 2^XR_* == blocksize */
  58
  59 #define NUM_SBS                 8       /* max # of sbs to verify */
  60 #define NUM_AGH_SECTS           4       /* # of components in an ag header */
  61
  62 #define MEM_ALIGN               128     /* I/O buf alignment - a cache line */
  63
  64 /*
  65  * secondary sb mask -- if the secondary sb feature bits has a
  66  * the partial sb mask bit set, then you depend on the fields
  67  * in it up to and including sb_inoalignmt but the unused part of the
  68  * sector may have trash in it.  If the sb has any bits set that are in
  69  * the good mask, then the entire sb and sector are good (was bzero'ed
  70  * by mkfs).  The third mask is for filesystems made by pre-6.5 campus
  71  * alpha mkfs's.  Those are rare so we'll check for those under
  72  * a special option.
  73  */
  74 #define XR_PART_SECSB_VNMASK    0x0F80  /* >= XFS_SB_VERSION_ALIGNBIT */
  75 #define XR_GOOD_SECSB_VNMASK    0x0F00  /* >= XFS_SB_VERSION_DALIGNBIT */
  76 #define XR_ALPHA_SECSB_VNMASK   0x0180  /* DALIGN|ALIGN bits */
  77
  78 /* global variables for xfs_repair */
  79
  80 /* arguments and argument flag variables */
  81
  82 EXTERN char     *fs_name;               /* name of filesystem */
  83 EXTERN int      verbose;                /* verbose flag, mostly for debugging */
  84
  85
  86 /* for reading stuff in manually (bypassing libsim) */
  87
  88 EXTERN char     *iobuf;                 /* large buffer */
  89 EXTERN int      iobuf_size;
  90 EXTERN char     *smallbuf;              /* small (1-4 page) buffer */
  91 EXTERN int      smallbuf_size;
  92 EXTERN char     *sb_bufs[NUM_SBS];      /* superblock buffers */
  93 EXTERN int      sbbuf_size;
  94
  95 /* direct I/O info */
  96
  97 EXTERN int      minio_align;            /* min I/O size and alignment */
  98 EXTERN int      mem_align;              /* memory alignment */
  99 EXTERN int      max_iosize;             /* max I/O size */
 100
 101 /* file descriptors */
 102
 103 EXTERN int      fs_fd;                  /* filesystem fd */
 104
 105 /* command-line flags */
 106
 107 EXTERN int      verbose;
 108 EXTERN int      no_modify;
 109 EXTERN int      dangerously;            /* live dangerously ... fix ro mount */
 110 EXTERN int      isa_file;
 111 EXTERN int      zap_log;
 112 EXTERN int      dumpcore;               /* abort, not exit on fatal errs */
 113 EXTERN int      delete_attr_ok;         /* can clear attrs w/o clearing files */
 114 EXTERN int      force_geo;              /* can set geo on low confidence info */
 115 EXTERN int      assume_xfs;             /* assume we have an xfs fs */
 116 EXTERN int      pre_65_beta;            /* fs was mkfs'ed by a version earlier * than 6.5-beta */
 117 EXTERN char     *log_name;              /* Name of log device */
 118 EXTERN int      log_spec;               /* Log dev specified as option */
 119 EXTERN char     *rt_name;               /* Name of realtime device */
 120 EXTERN int      rt_spec;                /* Realtime dev specified as option */
 121
 122 /* misc status variables */
 123
 124 EXTERN int              primary_sb_modified;
 125 EXTERN int              bad_ino_btree;
 126 EXTERN int              clear_sunit;
 127 EXTERN int              fs_is_dirty;
 128
 129 /* for hunting down the root inode */
 130
 131 EXTERN int              need_root_inode;
 132 EXTERN int              need_root_dotdot;
 133
 134 EXTERN int              need_rbmino;
 135 EXTERN int              need_rsumino;
 136
 137 EXTERN int              lost_quotas;
 138 EXTERN int              have_uquotino;
 139 EXTERN int              have_gquotino;
 140 EXTERN int              lost_uquotino;
 141 EXTERN int              lost_gquotino;
 142 EXTERN int              lost_pquotino;
 143
 144 EXTERN xfs_agino_t      first_prealloc_ino;
 145 EXTERN xfs_agino_t      last_prealloc_ino;
 146 EXTERN xfs_agblock_t    bnobt_root;
 147 EXTERN xfs_agblock_t    bcntbt_root;
 148 EXTERN xfs_agblock_t    inobt_root;
 149
 150 /* configuration vars -- fs geometry dependent */
 151
 152 EXTERN int              inodes_per_block;
 153 EXTERN int              inodes_per_cluster;     /* inodes per inode buffer */
 154 EXTERN unsigned int     glob_agcount;
 155 EXTERN int              chunks_pblock;  /* # of 64-ino chunks per allocation */
 156 EXTERN int              max_symlink_blocks;
 157 EXTERN __int64_t        fs_max_file_offset;
 158
 159 /* block allocation bitmaps */
 160
 161 EXTERN __uint64_t       **ba_bmap;      /* see incore.h */
 162 EXTERN __uint64_t       *rt_ba_bmap;    /* see incore.h */
 163
 164 /* realtime info */
 165
 166 EXTERN xfs_rtword_t     *btmcompute;
 167 EXTERN xfs_suminfo_t    *sumcompute;
 168
 169 /* inode tree records have full or partial backptr fields ? */
 170
 171 EXTERN int              full_backptrs;  /*
 172                                          * if 1, use backptrs_t component
 173                                          * of ino_un union, if 0, use
 174                                          * parent_list_t component.  see
 175                                          * incore.h for more details
 176                                          */
 177
 178 #define ORPHANAGE       "lost+found"
 179
 180 /* superblock counters */
 181
 182 EXTERN __uint64_t       sb_icount;      /* allocated (made) inodes */
 183 EXTERN __uint64_t       sb_ifree;       /* free inodes */
 184 EXTERN __uint64_t       sb_fdblocks;    /* free data blocks */
 185 EXTERN __uint64_t       sb_frextents;   /* free realtime extents */
 186
 187 EXTERN xfs_ino_t        orphanage_ino;
 188 EXTERN xfs_ino_t        old_orphanage_ino;
 189
 190 /* superblock geometry info */
 191
 192 EXTERN xfs_extlen_t     sb_inoalignmt;
 193 EXTERN __uint32_t       sb_unit;
 194 EXTERN __uint32_t       sb_width;
 195
 196 #endif /* _XFS_REPAIR_GLOBAL_H */