include/xfs_types.h

   1 /*
   2  * Copyright (c) 2000 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 #ifndef __XFS_TYPES_H__
  33 #define __XFS_TYPES_H__
  34
  35 /*
  36  * Some types are conditional based on the selected configuration.
  37  * Set XFS_BIG_FILES=1 or 0 and XFS_BIG_FILESYSTEMS=1 or 0 depending
  38  * on the desired configuration.
  39  * XFS_BIG_FILES needs pgno_t to be 64 bits (64-bit kernels).
  40  * XFS_BIG_FILESYSTEMS needs daddr_t to be 64 bits (N32 and 64-bit kernels).
  41  *
  42  * Expect these to be set from klocaldefs, or from the machine-type
  43  * defs files for the normal case.
  44  */
  45
  46 #define XFS_BIG_FILES           1
  47 #define XFS_BIG_FILESYSTEMS     1
  48
  49 typedef __uint32_t      xfs_agblock_t;  /* blockno in alloc. group */
  50 typedef __uint32_t      xfs_extlen_t;   /* extent length in blocks */
  51 typedef __uint32_t      xfs_agnumber_t; /* allocation group number */
  52 typedef __int32_t       xfs_extnum_t;   /* # of extents in a file */
  53 typedef __int16_t       xfs_aextnum_t;  /* # extents in an attribute fork */
  54 typedef __int64_t       xfs_fsize_t;    /* bytes in a file */
  55 typedef __uint64_t      xfs_ufsize_t;   /* unsigned bytes in a file */
  56
  57 typedef __int32_t       xfs_suminfo_t;  /* type of bitmap summary info */
  58 typedef __int32_t       xfs_rtword_t;   /* word type for bitmap manipulations */
  59
  60 typedef __int64_t       xfs_lsn_t;      /* log sequence number */
  61 typedef __int32_t       xfs_tid_t;      /* transaction identifier */
  62
  63 typedef __uint32_t      xfs_dablk_t;    /* dir/attr block number (in file) */
  64 typedef __uint32_t      xfs_dahash_t;   /* dir/attr hash value */
  65
  66 typedef __uint16_t      xfs_prid_t;     /* prid_t truncated to 16bits in XFS */
  67
  68 /*
  69  * These types are 64 bits on disk but are either 32 or 64 bits in memory.
  70  * Disk based types:
  71  */
  72 typedef __uint64_t      xfs_dfsbno_t;   /* blockno in filesystem (agno|agbno) */
  73 typedef __uint64_t      xfs_drfsbno_t;  /* blockno in filesystem (raw) */
  74 typedef __uint64_t      xfs_drtbno_t;   /* extent (block) in realtime area */
  75 typedef __uint64_t      xfs_dfiloff_t;  /* block number in a file */
  76 typedef __uint64_t      xfs_dfilblks_t; /* number of blocks in a file */
  77
  78 /*
  79  * Memory based types are conditional.
  80  */
  81 #if XFS_BIG_FILESYSTEMS
  82 typedef __uint64_t      xfs_fsblock_t;  /* blockno in filesystem (agno|agbno) */
  83 typedef __uint64_t      xfs_rfsblock_t; /* blockno in filesystem (raw) */
  84 typedef __uint64_t      xfs_rtblock_t;  /* extent (block) in realtime area */
  85 typedef __int64_t       xfs_srtblock_t; /* signed version of xfs_rtblock_t */
  86 #else
  87 typedef __uint32_t      xfs_fsblock_t;  /* blockno in filesystem (agno|agbno) */
  88 typedef __uint32_t      xfs_rfsblock_t; /* blockno in filesystem (raw) */
  89 typedef __uint32_t      xfs_rtblock_t;  /* extent (block) in realtime area */
  90 typedef __int32_t       xfs_srtblock_t; /* signed version of xfs_rtblock_t */
  91 #endif
  92 #if XFS_BIG_FILES
  93 typedef __uint64_t      xfs_fileoff_t;  /* block number in a file */
  94 typedef __int64_t       xfs_sfiloff_t;  /* signed block number in a file */
  95 typedef __uint64_t      xfs_filblks_t;  /* number of blocks in a file */
  96 #else
  97 typedef __uint32_t      xfs_fileoff_t;  /* block number in a file */
  98 typedef __int32_t       xfs_sfiloff_t;  /* signed block number in a file */
  99 typedef __uint32_t      xfs_filblks_t;  /* number of blocks in a file */
 100 #endif
 101
 102 typedef __uint8_t       xfs_arch_t;     /* architecutre of an xfs fs */
 103
 104 /*
 105  * Null values for the types.
 106  */
 107 #define NULLDFSBNO      ((xfs_dfsbno_t)-1)
 108 #define NULLDRFSBNO     ((xfs_drfsbno_t)-1)
 109 #define NULLDRTBNO      ((xfs_drtbno_t)-1)
 110 #define NULLDFILOFF     ((xfs_dfiloff_t)-1)
 111
 112 #define NULLFSBLOCK     ((xfs_fsblock_t)-1)
 113 #define NULLRFSBLOCK    ((xfs_rfsblock_t)-1)
 114 #define NULLRTBLOCK     ((xfs_rtblock_t)-1)
 115 #define NULLFILEOFF     ((xfs_fileoff_t)-1)
 116
 117 #define NULLAGBLOCK     ((xfs_agblock_t)-1)
 118 #define NULLAGNUMBER    ((xfs_agnumber_t)-1)
 119 #define NULLEXTNUM      ((xfs_extnum_t)-1)
 120
 121 #define NULLCOMMITLSN   ((xfs_lsn_t)-1)
 122
 123 /*
 124  * Max values for extlen, extnum, aextnum.
 125  */
 126 #define MAXEXTLEN       ((xfs_extlen_t)0x001fffff)      /* 21 bits */
 127 #define MAXEXTNUM       ((xfs_extnum_t)0x7fffffff)      /* signed int */
 128 #define MAXAEXTNUM      ((xfs_aextnum_t)0x7fff)         /* signed short */
 129
 130 /*
 131  * MAXNAMELEN is the length (including the terminating null) of
 132  * the longest permissible file (component) name.
 133  */
 134 #define MAXNAMELEN      256
 135
 136 typedef enum {
 137         XFS_LOOKUP_EQi, XFS_LOOKUP_LEi, XFS_LOOKUP_GEi
 138 } xfs_lookup_t;
 139
 140 typedef enum {
 141         XFS_BTNUM_BNOi, XFS_BTNUM_CNTi, XFS_BTNUM_BMAPi, XFS_BTNUM_INOi,
 142         XFS_BTNUM_MAX
 143 } xfs_btnum_t;
 144
 145
 146 #if defined(CONFIG_PROC_FS) && defined(__KERNEL__)
 147 /*
 148  * XFS global statistics
 149  */
 150 struct xfsstats {
 151 # define XFSSTAT_END_EXTENT_ALLOC       4
 152         __uint32_t              xs_allocx;
 153         __uint32_t              xs_allocb;
 154         __uint32_t              xs_freex;
 155         __uint32_t              xs_freeb;
 156 # define XFSSTAT_END_ALLOC_BTREE        (XFSSTAT_END_EXTENT_ALLOC+4)
 157         __uint32_t              xs_abt_lookup;
 158         __uint32_t              xs_abt_compare;
 159         __uint32_t              xs_abt_insrec;
 160         __uint32_t              xs_abt_delrec;
 161 # define XFSSTAT_END_BLOCK_MAPPING      (XFSSTAT_END_ALLOC_BTREE+7)
 162         __uint32_t              xs_blk_mapr;
 163         __uint32_t              xs_blk_mapw;
 164         __uint32_t              xs_blk_unmap;
 165         __uint32_t              xs_add_exlist;
 166         __uint32_t              xs_del_exlist;
 167         __uint32_t              xs_look_exlist;
 168         __uint32_t              xs_cmp_exlist;
 169 # define XFSSTAT_END_BLOCK_MAP_BTREE    (XFSSTAT_END_BLOCK_MAPPING+4)
 170         __uint32_t              xs_bmbt_lookup;
 171         __uint32_t              xs_bmbt_compare;
 172         __uint32_t              xs_bmbt_insrec;
 173         __uint32_t              xs_bmbt_delrec;
 174 # define XFSSTAT_END_DIRECTORY_OPS      (XFSSTAT_END_BLOCK_MAP_BTREE+4)
 175         __uint32_t              xs_dir_lookup;
 176         __uint32_t              xs_dir_create;
 177         __uint32_t              xs_dir_remove;
 178         __uint32_t              xs_dir_getdents;
 179 # define XFSSTAT_END_TRANSACTIONS       (XFSSTAT_END_DIRECTORY_OPS+3)
 180         __uint32_t              xs_trans_sync;
 181         __uint32_t              xs_trans_async;
 182         __uint32_t              xs_trans_empty;
 183 # define XFSSTAT_END_INODE_OPS          (XFSSTAT_END_TRANSACTIONS+7)
 184         __uint32_t              xs_ig_attempts;
 185         __uint32_t              xs_ig_found;
 186         __uint32_t              xs_ig_frecycle;
 187         __uint32_t              xs_ig_missed;
 188         __uint32_t              xs_ig_dup;
 189         __uint32_t              xs_ig_reclaims;
 190         __uint32_t              xs_ig_attrchg;
 191 # define XFSSTAT_END_LOG_OPS            (XFSSTAT_END_INODE_OPS+5)
 192         __uint32_t              xs_log_writes;
 193         __uint32_t              xs_log_blocks;
 194         __uint32_t              xs_log_noiclogs;
 195         __uint32_t              xs_log_force;
 196         __uint32_t              xs_log_force_sleep;
 197 # define XFSSTAT_END_TAIL_PUSHING       (XFSSTAT_END_LOG_OPS+10)
 198         __uint32_t              xs_try_logspace;
 199         __uint32_t              xs_sleep_logspace;
 200         __uint32_t              xs_push_ail;
 201         __uint32_t              xs_push_ail_success;
 202         __uint32_t              xs_push_ail_pushbuf;
 203         __uint32_t              xs_push_ail_pinned;
 204         __uint32_t              xs_push_ail_locked;
 205         __uint32_t              xs_push_ail_flushing;
 206         __uint32_t              xs_push_ail_restarts;
 207         __uint32_t              xs_push_ail_flush;
 208 # define XFSSTAT_END_WRITE_CONVERT      (XFSSTAT_END_TAIL_PUSHING+2)
 209         __uint32_t              xs_xstrat_quick;
 210         __uint32_t              xs_xstrat_split;
 211 # define XFSSTAT_END_READ_WRITE_OPS     (XFSSTAT_END_WRITE_CONVERT+2)
 212         __uint32_t              xs_write_calls;
 213         __uint32_t              xs_read_calls;
 214 # define XFSSTAT_END_ATTRIBUTE_OPS      (XFSSTAT_END_READ_WRITE_OPS+4)
 215         __uint32_t              xs_attr_get;
 216         __uint32_t              xs_attr_set;
 217         __uint32_t              xs_attr_remove;
 218         __uint32_t              xs_attr_list;
 219 # define XFSSTAT_END_QUOTA_OPS          (XFSSTAT_END_ATTRIBUTE_OPS+8)
 220         __uint32_t              xs_qm_dqreclaims;
 221         __uint32_t              xs_qm_dqreclaim_misses;
 222         __uint32_t              xs_qm_dquot_dups;
 223         __uint32_t              xs_qm_dqcachemisses;
 224         __uint32_t              xs_qm_dqcachehits;
 225         __uint32_t              xs_qm_dqwants;
 226         __uint32_t              xs_qm_dqshake_reclaims;
 227         __uint32_t              xs_qm_dqinact_reclaims;
 228 # define XFSSTAT_END_INODE_CLUSTER      (XFSSTAT_END_QUOTA_OPS+3)
 229         __uint32_t              xs_iflush_count;
 230         __uint32_t              xs_icluster_flushcnt;
 231         __uint32_t              xs_icluster_flushinode;
 232 # define XFSSTAT_END_VNODE_OPS          (XFSSTAT_END_INODE_CLUSTER+8)
 233         __uint32_t              vn_active;      /* # vnodes not on free lists */
 234         __uint32_t              vn_alloc;       /* # times vn_alloc called */
 235         __uint32_t              vn_get;         /* # times vn_get called */
 236         __uint32_t              vn_hold;        /* # times vn_hold called */
 237         __uint32_t              vn_rele;        /* # times vn_rele called */
 238         __uint32_t              vn_reclaim;     /* # times vn_reclaim called */
 239         __uint32_t              vn_remove;      /* # times vn_remove called */
 240         __uint32_t              vn_free;        /* # times vn_free called */
 241 /* Extra precision counters */
 242         __uint64_t              xs_xstrat_bytes;
 243         __uint64_t              xs_write_bytes;
 244         __uint64_t              xs_read_bytes;
 245 };
 246
 247 extern struct xfsstats xfsstats;
 248
 249 # define XFS_STATS_INC(count)           ( (count)++ )
 250 # define XFS_STATS_DEC(count)           ( (count)-- )
 251 # define XFS_STATS_ADD(count, inc)      ( (count) += (inc) )
 252 #else   /* !CONFIG_PROC_FS */
 253 # define XFS_STATS_INC(count)
 254 # define XFS_STATS_DEC(count)
 255 # define XFS_STATS_ADD(count, inc)
 256 #endif  /* !CONFIG_PROC_FS */
 257
 258
 259
 260 /* juggle IRIX device numbers - still used in ondisk structures */
 261
 262 #ifndef __KERNEL__
 263 #define MKDEV(major, minor)     makedev(major, minor)
 264 #endif
 265
 266 #define IRIX_DEV_BITSMAJOR      14
 267 #define IRIX_DEV_BITSMINOR      18
 268 #define IRIX_DEV_MAXMAJ         0x1ff
 269 #define IRIX_DEV_MAXMIN         0x3ffff
 270 #define IRIX_DEV_MAJOR(dev)     ((int)(((unsigned)(dev)>>IRIX_DEV_BITSMINOR) \
 271                                     & IRIX_DEV_MAXMAJ))
 272 #define IRIX_DEV_MINOR(dev)     ((int)((dev)&IRIX_DEV_MAXMIN))
 273 #define IRIX_MKDEV(major,minor) ((xfs_dev_t)(((major)<<IRIX_DEV_BITSMINOR) \
 274                                     | (minor&IRIX_DEV_MAXMIN)))
 275
 276 #define IRIX_DEV_TO_KDEVT(dev)  MKDEV(IRIX_DEV_MAJOR(dev),IRIX_DEV_MINOR(dev))
 277
 278 #ifdef __KERNEL__
 279 /* __psint_t is the same size as a pointer */
 280 #if (BITS_PER_LONG == 32)
 281 typedef __int32_t __psint_t;
 282 typedef __uint32_t __psunsigned_t;
 283 #elif (BITS_PER_LONG == 64)
 284 typedef __int64_t __psint_t;
 285 typedef __uint64_t __psunsigned_t;
 286 #else
 287 #error BITS_PER_LONG must be 32 or 64
 288 #endif
 289
 290
 291 /*
 292  * struct for passing owner/requestor id
 293  */
 294 typedef struct flid {
 295 #ifdef CELL_CAPABLE
 296         pid_t   fl_pid;
 297         sysid_t fl_sysid;
 298 #endif
 299 } flid_t;
 300
 301 #endif  /* __KERNEL__ */
 302
 303 #endif  /* !__XFS_TYPES_H */