include/linux/affs_fs_sb.h

   1 #ifndef _AFFS_FS_SB
   2 #define _AFFS_FS_SB
   3
   4 /*
   5  * super-block data in memory
   6  *
   7  * Block numbers are adjusted for their actual size
   8  *
   9  */
  10
  11 struct affs_bm_info {
  12         u32 bm_key;                     /* Disk block number */
  13         u32 bm_free;                    /* Free blocks in here */
  14 };
  15
  16 struct affs_sb_info {
  17         int s_partition_size;           /* Partition size in blocks. */
  18         int s_reserved;                 /* Number of reserved blocks. */
  19         //u32 s_blksize;                        /* Initial device blksize */
  20         u32 s_data_blksize;             /* size of the data block w/o header */
  21         u32 s_root_block;               /* FFS root block number. */
  22         int s_hashsize;                 /* Size of hash table. */
  23         unsigned long s_flags;          /* See below. */
  24         uid_t s_uid;                    /* uid to override */
  25         gid_t s_gid;                    /* gid to override */
  26         umode_t s_mode;                 /* mode to override */
  27         struct buffer_head *s_root_bh;  /* Cached root block. */
  28         struct semaphore s_bmlock;      /* Protects bitmap access. */
  29         struct affs_bm_info *s_bitmap;  /* Bitmap infos. */
  30         u32 s_bmap_count;               /* # of bitmap blocks. */
  31         u32 s_bmap_bits;                /* # of bits in one bitmap blocks */
  32         u32 s_last_bmap;
  33         struct buffer_head *s_bmap_bh;
  34         char *s_prefix;                 /* Prefix for volumes and assigns. */
  35         int s_prefix_len;               /* Length of prefix. */
  36         char s_volume[32];              /* Volume prefix for absolute symlinks. */
  37 };
  38
  39 #define SF_INTL         0x0001          /* International filesystem. */
  40 #define SF_BM_VALID     0x0002          /* Bitmap is valid. */
  41 #define SF_IMMUTABLE    0x0004          /* Protection bits cannot be changed */
  42 #define SF_QUIET        0x0008          /* chmod errors will be not reported */
  43 #define SF_SETUID       0x0010          /* Ignore Amiga uid */
  44 #define SF_SETGID       0x0020          /* Ignore Amiga gid */
  45 #define SF_SETMODE      0x0040          /* Ignore Amiga protection bits */
  46 #define SF_MUFS         0x0100          /* Use MUFS uid/gid mapping */
  47 #define SF_OFS          0x0200          /* Old filesystem */
  48 #define SF_PREFIX       0x0400          /* Buffer for prefix is allocated */
  49 #define SF_VERBOSE      0x0800          /* Talk about fs when mounting */
  50
  51 /* short cut to get to the affs specific sb data */
  52 static inline struct affs_sb_info *AFFS_SB(struct super_block *sb)
  53 {
  54         return sb->s_fs_info;
  55 }
  56
  57 #endif