repair/globals.h

   1 /*
   2  * Copyright (c) 2000-2002 Silicon Graphics, Inc.  All Rights Reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of version 2 of the GNU General Public License as
   6  * published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it would be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  11  *
  12  * Further, this software is distributed without any warranty that it is
  13  * free of the rightful claim of any third person regarding infringement
  14  * or the like.  Any license provided herein, whether implied or
  15  * otherwise, applies only to this software file.  Patent licenses, if
  16  * any, provided herein do not apply to combinations of this program with
  17  * other software, or any other product whatsoever.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, write the Free Software Foundation, Inc., 59
  21  * Temple Place - Suite 330, Boston MA 02111-1307, USA.
  22  *
  23  * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
  24  * Mountain View, CA  94043, or:
  25  *
  26  * http://www.sgi.com
  27  *
  28  * For further information regarding this notice, see:
  29  *
  30  * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
  31  */
  32
  33 #ifndef _XFS_REPAIR_GLOBAL_H
  34 #define _XFS_REPAIR_GLOBAL_H
  35
  36 #ifndef EXTERN
  37 #define EXTERN extern
  38 #endif
  39
  40 /* useful macros */
  41
  42 #define rounddown(x, y) (((x)/(y))*(y))
  43
  44 /* error flags */
  45
  46 #define XR_OK                   0       /* good */
  47 #define XR_BAD_MAGIC            1       /* bad magic number */
  48 #define XR_BAD_BLOCKSIZE        2       /* bad block size */
  49 #define XR_BAD_BLOCKLOG         3       /* bad sb_blocklog field */
  50 #define XR_BAD_VERSION          4       /* bad version number */
  51 #define XR_BAD_INPROGRESS       5       /* in progress set */
  52 #define XR_BAD_FS_SIZE_DATA     6       /* ag sizes, number, fs size mismatch */
  53 #define XR_BAD_INO_SIZE_DATA    7       /* bad inode size or perblock fields */
  54 #define XR_BAD_SECT_SIZE_DATA   8       /* bad sector size info */
  55 #define XR_AGF_GEO_MISMATCH     9       /* agf info conflicts with sb */
  56 #define XR_AGI_GEO_MISMATCH     10      /* agf info conflicts with sb */
  57 #define XR_SB_GEO_MISMATCH      11      /* sb geo conflicts with fs sb geo */
  58 #define XR_EOF                  12      /* seeked beyond EOF */
  59 #define XR_BAD_RT_GEO_DATA      13      /* realtime geometry inconsistent */
  60 #define XR_BAD_INO_MAX_PCT      14      /* max % of inodes > 100% */
  61 #define XR_BAD_INO_ALIGN        15      /* bad inode alignment value */
  62 #define XR_INSUFF_SEC_SB        16      /* not enough matching secondary sbs */
  63 #define XR_BAD_SB_UNIT          17      /* bad stripe unit */
  64 #define XR_BAD_SB_WIDTH         18      /* bad stripe width */
  65 #define XR_BAD_SVN              19      /* bad shared version number */
  66 #define XR_BAD_ERR_CODE         20      /* Bad error code */
  67
  68 /* XFS filesystem (il)legal values */
  69
  70 #define XR_LOG2BSIZE_MIN        9       /* min/max fs blocksize (log2) */
  71 #define XR_LOG2BSIZE_MAX        16      /* 2^XR_* == blocksize */
  72
  73 #define NUM_SBS                 8       /* max # of sbs to verify */
  74 #define NUM_AGH_SECTS           4       /* # of components in an ag header */
  75
  76 #define MEM_ALIGN               128     /* I/O buf alignment - a cache line */
  77
  78 /*
  79  * secondary sb mask -- if the secondary sb feature bits has a
  80  * the partial sb mask bit set, then you depend on the fields
  81  * in it up to and including sb_inoalignmt but the unused part of the
  82  * sector may have trash in it.  If the sb has any bits set that are in
  83  * the good mask, then the entire sb and sector are good (was bzero'ed
  84  * by mkfs).  The third mask is for filesystems made by pre-6.5 campus
  85  * alpha mkfs's.  Those are rare so we'll check for those under
  86  * a special option.
  87  */
  88 #define XR_PART_SECSB_VNMASK    0x0F80  /* >= XFS_SB_VERSION_ALIGNBIT */
  89 #define XR_GOOD_SECSB_VNMASK    0x0F00  /* >= XFS_SB_VERSION_DALIGNBIT */
  90 #define XR_ALPHA_SECSB_VNMASK   0x0180  /* DALIGN|ALIGN bits */
  91
  92 /* global variables for xfs_repair */
  93
  94 /* arguments and argument flag variables */
  95
  96 EXTERN char     *fs_name;               /* name of filesystem */
  97 EXTERN int      verbose;                /* verbose flag, mostly for debugging */
  98
  99
 100 /* for reading stuff in manually (bypassing libsim) */
 101
 102 EXTERN char     *iobuf;                 /* large buffer */
 103 EXTERN int      iobuf_size;
 104 EXTERN char     *smallbuf;              /* small (1-4 page) buffer */
 105 EXTERN int      smallbuf_size;
 106 EXTERN char     *sb_bufs[NUM_SBS];      /* superblock buffers */
 107 EXTERN int      sbbuf_size;
 108
 109 /* direct I/O info */
 110
 111 EXTERN int      minio_align;            /* min I/O size and alignment */
 112 EXTERN int      mem_align;              /* memory alignment */
 113 EXTERN int      max_iosize;             /* max I/O size */
 114
 115 /* file descriptors */
 116
 117 EXTERN int      fs_fd;                  /* filesystem fd */
 118
 119 /* command-line flags */
 120
 121 EXTERN int      verbose;
 122 EXTERN int      no_modify;
 123 EXTERN int      isa_file;
 124 EXTERN int      zap_log;
 125 EXTERN int      dumpcore;               /* abort, not exit on fatal errs */
 126 EXTERN int      delete_attr_ok;         /* can clear attrs w/o clearing files */
 127 EXTERN int      force_geo;              /* can set geo on low confidence info */
 128 EXTERN int      assume_xfs;             /* assume we have an xfs fs */
 129 EXTERN int      pre_65_beta;            /* fs was mkfs'ed by a version earlier * than 6.5-beta */
 130 EXTERN char     *log_name;              /* Name of log device */
 131 EXTERN int      log_spec;               /* Log dev specified as option */
 132 EXTERN char     *rt_name;               /* Name of realtime device */
 133 EXTERN int      rt_spec;                /* Realtime dev specified as option */
 134
 135 /* misc status variables */
 136
 137 EXTERN int              primary_sb_modified;
 138 EXTERN int              bad_ino_btree;
 139 EXTERN int              clear_sunit;
 140 EXTERN int              fs_is_dirty;
 141
 142 /* for hunting down the root inode */
 143
 144 EXTERN int              need_root_inode;
 145 EXTERN int              need_root_dotdot;
 146
 147 EXTERN int              need_rbmino;
 148 EXTERN int              need_rsumino;
 149
 150 EXTERN int              lost_quotas;
 151 EXTERN int              have_uquotino;
 152 EXTERN int              have_gquotino;
 153 EXTERN int              lost_uquotino;
 154 EXTERN int              lost_gquotino;
 155
 156 EXTERN xfs_agino_t      first_prealloc_ino;
 157 EXTERN xfs_agino_t      last_prealloc_ino;
 158 EXTERN xfs_agblock_t    bnobt_root;
 159 EXTERN xfs_agblock_t    bcntbt_root;
 160 EXTERN xfs_agblock_t    inobt_root;
 161
 162 /* configuration vars -- fs geometry dependent */
 163
 164 EXTERN int              inodes_per_block;
 165 EXTERN int              inodes_per_cluster;     /* inodes per inode buffer */
 166 EXTERN unsigned int     glob_agcount;
 167 EXTERN int              chunks_pblock;  /* # of 64-ino chunks per allocation */
 168 EXTERN int              max_symlink_blocks;
 169 EXTERN __int64_t        fs_max_file_offset;
 170
 171 /* block allocation bitmaps */
 172
 173 EXTERN __uint64_t       **ba_bmap;      /* see incore.h */
 174 EXTERN __uint64_t       *rt_ba_bmap;    /* see incore.h */
 175
 176 /* realtime info */
 177
 178 EXTERN xfs_rtword_t     *btmcompute;
 179 EXTERN xfs_suminfo_t    *sumcompute;
 180
 181 /* inode tree records have full or partial backptr fields ? */
 182
 183 EXTERN int              full_backptrs;  /*
 184                                          * if 1, use backptrs_t component
 185                                          * of ino_un union, if 0, use
 186                                          * parent_list_t component.  see
 187                                          * incore.h for more details
 188                                          */
 189
 190 #define ORPHANAGE       "lost+found"
 191
 192 /* superblock counters */
 193
 194 EXTERN __uint64_t       sb_icount;      /* allocated (made) inodes */
 195 EXTERN __uint64_t       sb_ifree;       /* free inodes */
 196 EXTERN __uint64_t       sb_fdblocks;    /* free data blocks */
 197 EXTERN __uint64_t       sb_frextents;   /* free realtime extents */
 198
 199 EXTERN xfs_ino_t        orphanage_ino;
 200 EXTERN xfs_ino_t        old_orphanage_ino;
 201
 202 /* superblock geometry info */
 203
 204 EXTERN xfs_extlen_t     sb_inoalignmt;
 205 EXTERN __uint32_t       sb_unit;
 206 EXTERN __uint32_t       sb_width;
 207
 208 #endif /* _XFS_REPAIR_GLOBAL_H */