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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | #ifndef _MSDOS_FS_SB |
| 2 | #define _MSDOS_FS_SB |
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| 3 | |||
| 4 | /* |
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| 5 | * MS-DOS file system in-core superblock data |
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| 6 | */ |
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| 7 | |||
| 8 | struct fat_mount_options { |
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| 9 | uid_t fs_uid; |
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| 10 | gid_t fs_gid; |
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| 11 | unsigned short fs_fmask; |
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| 12 | unsigned short fs_dmask; |
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| 13 | unsigned short codepage; /* Codepage for shortname conversions */ |
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| 14 | char *iocharset; /* Charset used for filename input/display */ |
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| 15 | unsigned short shortname; /* flags for shortname display/create rule */ |
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| 16 | unsigned char name_check; /* r = relaxed, n = normal, s = strict */ |
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| 17 | unsigned quiet:1, /* set = fake successful chmods and chowns */ |
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| 18 | showexec:1, /* set = only set x bit for com/exe/bat */ |
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| 19 | sys_immutable:1, /* set = system files are immutable */ |
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| 20 | dotsOK:1, /* set = hidden and system files are named '.filename' */ |
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| 21 | isvfat:1, /* 0=no vfat long filename support, 1=vfat support */ |
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| 22 | utf8:1, /* Use of UTF8 character set (Default) */ |
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| 23 | unicode_xlate:1, /* create escape sequences for unhandled Unicode */ |
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| 24 | numtail:1, /* Does first alias have a numeric '~1' type tail? */ |
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| 25 | atari:1, /* Use Atari GEMDOS variation of MS-DOS fs */ |
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| 26 | nocase:1; /* Does this need case conversion? 0=need case conversion*/ |
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| 27 | }; |
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| 28 | |||
| 29 | #define FAT_CACHE_NR 8 /* number of FAT cache */ |
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| 30 | |||
| 31 | struct fat_cache { |
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| 32 | int start_cluster; /* first cluster of the chain. */ |
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| 33 | int file_cluster; /* cluster number in the file. */ |
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| 34 | int disk_cluster; /* cluster number on disk. */ |
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| 35 | struct fat_cache *next; /* next cache entry */ |
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| 36 | }; |
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| 37 | |||
| 38 | struct msdos_sb_info { |
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| 39 | unsigned short sec_per_clus; /* sectors/cluster */ |
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| 40 | unsigned short cluster_bits; /* log2(cluster_size) */ |
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| 41 | unsigned int cluster_size; /* cluster size */ |
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| 42 | unsigned char fats,fat_bits; /* number of FATs, FAT bits (12 or 16) */ |
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| 43 | unsigned short fat_start; |
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| 44 | unsigned long fat_length; /* FAT start & length (sec.) */ |
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| 45 | unsigned long dir_start; |
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| 46 | unsigned short dir_entries; /* root dir start & entries */ |
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| 47 | unsigned long data_start; /* first data sector */ |
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| 48 | unsigned long clusters; /* number of clusters */ |
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| 49 | unsigned long root_cluster; /* first cluster of the root directory */ |
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| 50 | unsigned long fsinfo_sector; /* FAT32 fsinfo offset from start of disk */ |
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| 51 | struct semaphore fat_lock; |
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| 52 | int prev_free; /* previously returned free cluster number */ |
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| 53 | int free_clusters; /* -1 if undefined */ |
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| 54 | struct fat_mount_options options; |
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| 55 | struct nls_table *nls_disk; /* Codepage used on disk */ |
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| 56 | struct nls_table *nls_io; /* Charset used for input and display */ |
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| 57 | void *dir_ops; /* Opaque; default directory operations */ |
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| 58 | int dir_per_block; /* dir entries per block */ |
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| 59 | int dir_per_block_bits; /* log2(dir_per_block) */ |
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| 60 | |||
| 61 | spinlock_t cache_lock; |
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| 62 | struct fat_cache cache_array[FAT_CACHE_NR], *cache; |
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| 63 | }; |
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| 64 | |||
| 65 | #endif |