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107 lines
2.1 KiB
107 lines
2.1 KiB
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
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#ifndef _LINUX_MINIX_FS_H |
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#define _LINUX_MINIX_FS_H |
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#include <linux/types.h> |
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#include <linux/magic.h> |
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/* |
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* The minix filesystem constants/structures |
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*/ |
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/* |
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* Thanks to Kees J Bot for sending me the definitions of the new |
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* minix filesystem (aka V2) with bigger inodes and 32-bit block |
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* pointers. |
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*/ |
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#define MINIX_ROOT_INO 1 |
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/* Not the same as the bogus LINK_MAX in <linux/limits.h>. Oh well. */ |
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#define MINIX_LINK_MAX 250 |
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#define MINIX2_LINK_MAX 65530 |
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#define MINIX_I_MAP_SLOTS 8 |
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#define MINIX_Z_MAP_SLOTS 64 |
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#define MINIX_VALID_FS 0x0001 /* Clean fs. */ |
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#define MINIX_ERROR_FS 0x0002 /* fs has errors. */ |
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#define MINIX_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct minix_inode))) |
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/* |
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* This is the original minix inode layout on disk. |
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* Note the 8-bit gid and atime and ctime. |
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*/ |
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struct minix_inode { |
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__u16 i_mode; |
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__u16 i_uid; |
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__u32 i_size; |
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__u32 i_time; |
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__u8 i_gid; |
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__u8 i_nlinks; |
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__u16 i_zone[9]; |
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}; |
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/* |
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* The new minix inode has all the time entries, as well as |
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* long block numbers and a third indirect block (7+1+1+1 |
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* instead of 7+1+1). Also, some previously 8-bit values are |
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* now 16-bit. The inode is now 64 bytes instead of 32. |
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*/ |
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struct minix2_inode { |
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__u16 i_mode; |
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__u16 i_nlinks; |
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__u16 i_uid; |
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__u16 i_gid; |
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__u32 i_size; |
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__u32 i_atime; |
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__u32 i_mtime; |
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__u32 i_ctime; |
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__u32 i_zone[10]; |
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}; |
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/* |
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* minix super-block data on disk |
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*/ |
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struct minix_super_block { |
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__u16 s_ninodes; |
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__u16 s_nzones; |
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__u16 s_imap_blocks; |
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__u16 s_zmap_blocks; |
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__u16 s_firstdatazone; |
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__u16 s_log_zone_size; |
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__u32 s_max_size; |
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__u16 s_magic; |
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__u16 s_state; |
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__u32 s_zones; |
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}; |
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/* |
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* V3 minix super-block data on disk |
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*/ |
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struct minix3_super_block { |
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__u32 s_ninodes; |
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__u16 s_pad0; |
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__u16 s_imap_blocks; |
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__u16 s_zmap_blocks; |
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__u16 s_firstdatazone; |
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__u16 s_log_zone_size; |
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__u16 s_pad1; |
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__u32 s_max_size; |
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__u32 s_zones; |
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__u16 s_magic; |
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__u16 s_pad2; |
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__u16 s_blocksize; |
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__u8 s_disk_version; |
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}; |
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struct minix_dir_entry { |
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__u16 inode; |
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char name[0]; |
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}; |
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struct minix3_dir_entry { |
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__u32 inode; |
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char name[0]; |
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}; |
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#endif
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