msdos_fs_sb.h
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上传日期：2013-02-24
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- #ifndef _MSDOS_FS_SB
- #define _MSDOS_FS_SB
- #include<linux/fat_cvf.h>
- /*
- * MS-DOS file system in-core superblock data
- */
- struct fat_mount_options {
- uid_t fs_uid;
- gid_t fs_gid;
- unsigned short fs_umask;
- unsigned short codepage; /* Codepage for shortname conversions */
- char *iocharset; /* Charset used for filename input/display */
- unsigned short shortname; /* flags for shortname display/create rule */
- unsigned char name_check; /* r = relaxed, n = normal, s = strict */
- unsigned char conversion; /* b = binary, t = text, a = auto */
- unsigned quiet:1, /* set = fake successful chmods and chowns */
- showexec:1, /* set = only set x bit for com/exe/bat */
- sys_immutable:1, /* set = system files are immutable */
- dotsOK:1, /* set = hidden and system files are named '.filename' */
- isvfat:1, /* 0=no vfat long filename support, 1=vfat support */
- utf8:1, /* Use of UTF8 character set (Default) */
- unicode_xlate:1, /* create escape sequences for unhandled Unicode */
- posixfs:1, /* Allow names like makefile and Makefile to coexist */
- numtail:1, /* Does first alias have a numeric '~1' type tail? */
- atari:1, /* Use Atari GEMDOS variation of MS-DOS fs */
- fat32:1, /* Is this a FAT32 partition? */
- nocase:1; /* Does this need case conversion? 0=need case conversion*/
- };
- struct msdos_sb_info {
- unsigned short cluster_size; /* sectors/cluster */
- unsigned short cluster_bits; /* sectors/cluster */
- unsigned char fats,fat_bits; /* number of FATs, FAT bits (12 or 16) */
- unsigned short fat_start;
- unsigned long fat_length; /* FAT start & length (sec.) */
- unsigned long dir_start;
- unsigned short dir_entries; /* root dir start & entries */
- unsigned long data_start; /* first data sector */
- unsigned long clusters; /* number of clusters */
- unsigned long root_cluster; /* first cluster of the root directory */
- unsigned long fsinfo_sector; /* FAT32 fsinfo offset from start of disk */
- struct semaphore fat_lock;
- int prev_free; /* previously returned free cluster number */
- int free_clusters; /* -1 if undefined */
- struct fat_mount_options options;
- struct nls_table *nls_disk; /* Codepage used on disk */
- struct nls_table *nls_io; /* Charset used for input and display */
- struct cvf_format* cvf_format;
- void *dir_ops; /* Opaque; default directory operations */
- void *private_data;
- int dir_per_block; /* dir entries per block */
- int dir_per_block_bits; /* log2(dir_per_block) */
- };
- #endif
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