include/linux/minix

/* */
   1 #ifndef _LINUX_MINIX_FS_H
   2 #define _LINUX_MINIX_FS_H
   3 
   4 /*
   5  * The minix filesystem constants/structures
   6  */
   7 
   8 /*
   9  * Thanks to Kees J Bot for sending me the definitions of the new
  10  * minix filesystem (aka V2) with bigger inodes and 32-bit block
  11  * pointers. It's not actually implemented yet, but I'll look into
  12  * it.
  13  */
  14 
  15 #define MINIX_ROOT_INO 1
  16 
  17 /* Not the same as the bogus LINK_MAX in <linux/limits.h>. Oh well. */
  18 #define MINIX_LINK_MAX  250
  19 
  20 #define MINIX_I_MAP_SLOTS       8
  21 #define MINIX_Z_MAP_SLOTS       8
  22 #define MINIX_SUPER_MAGIC       0x137F          /* original minix fs */
  23 #define MINIX_SUPER_MAGIC2      0x138F          /* minix fs, 30 char names */
  24 #define NEW_MINIX_SUPER_MAGIC   0x2468          /* minix V2 - not implemented */
  25 #define MINIX_VALID_FS          0x0001          /* Clean fs. */
  26 #define MINIX_ERROR_FS          0x0002          /* fs has errors. */
  27 
  28 #define MINIX_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct minix_inode)))
  29 
  30 /*
  31  * This is the original minix inode layout on disk.
  32  * Note the 8-bit gid and atime and ctime.
  33  */
  34 struct minix_inode {
  35         __u16 i_mode;
  36         __u16 i_uid;
  37         __u32 i_size;
  38         __u32 i_time;
  39         __u8  i_gid;
  40         __u8  i_nlinks;
  41         __u16 i_zone[9];
  42 };
  43 
  44 /*
  45  * The new minix inode has all the time entries, as well as
  46  * long block numbers and a third indirect block (7+1+1+1
  47  * instead of 7+1+1). Also, some previously 8-bit values are
  48  * now 16-bit. The inode is now 64 bytes instead of 32.
  49  */
  50 struct new_minix_inode {
  51         __u16 i_mode;
  52         __u16 i_nlinks;
  53         __u16 i_uid;
  54         __u16 i_gid;
  55         __u32 i_size;
  56         __u32 i_atime;
  57         __u32 i_mtime;
  58         __u32 i_ctime;
  59         __u32 i_zone[10];
  60 };
  61 
  62 /*
  63  * minix super-block data on disk
  64  */
  65 struct minix_super_block {
  66         __u16 s_ninodes;
  67         __u16 s_nzones;
  68         __u16 s_imap_blocks;
  69         __u16 s_zmap_blocks;
  70         __u16 s_firstdatazone;
  71         __u16 s_log_zone_size;
  72         __u32 s_max_size;
  73         __u16 s_magic;
  74         __u16 s_state;
  75 };
  76 
  77 struct minix_dir_entry {
  78         __u16 inode;
  79         char name[0];
  80 };
  81 
  82 #ifdef __KERNEL__
  83 
  84 extern int minix_lookup(struct inode * dir,const char * name, int len,
  85         struct inode ** result);
  86 extern int minix_create(struct inode * dir,const char * name, int len, int mode,
  87         struct inode ** result);
  88 extern int minix_mkdir(struct inode * dir, const char * name, int len, int mode);
  89 extern int minix_rmdir(struct inode * dir, const char * name, int len);
  90 extern int minix_unlink(struct inode * dir, const char * name, int len);
  91 extern int minix_symlink(struct inode * inode, const char * name, int len,
  92         const char * symname);
  93 extern int minix_link(struct inode * oldinode, struct inode * dir, const char * name, int len);
  94 extern int minix_mknod(struct inode * dir, const char * name, int len, int mode, int rdev);
  95 extern int minix_rename(struct inode * old_dir, const char * old_name, int old_len,
  96         struct inode * new_dir, const char * new_name, int new_len);
  97 extern struct inode * minix_new_inode(const struct inode * dir);
  98 extern void minix_free_inode(struct inode * inode);
  99 extern unsigned long minix_count_free_inodes(struct super_block *sb);
 100 extern int minix_new_block(struct super_block * sb);
 101 extern void minix_free_block(struct super_block * sb, int block);
 102 extern unsigned long minix_count_free_blocks(struct super_block *sb);
 103 
 104 extern int minix_bmap(struct inode *,int);
 105 
 106 extern struct buffer_head * minix_getblk(struct inode *, int, int);
 107 extern struct buffer_head * minix_bread(struct inode *, int, int);
 108 
 109 extern void minix_truncate(struct inode *);
 110 extern void minix_put_super(struct super_block *);
 111 extern struct super_block *minix_read_super(struct super_block *,void *,int);
 112 extern void minix_write_super(struct super_block *);
 113 extern int minix_remount (struct super_block * sb, int * flags, char * data);
 114 extern void minix_read_inode(struct inode *);
 115 extern void minix_write_inode(struct inode *);
 116 extern void minix_put_inode(struct inode *);
 117 extern void minix_statfs(struct super_block *, struct statfs *);
 118 extern int minix_sync_inode(struct inode *);
 119 extern int minix_sync_file(struct inode *, struct file *);
 120 
 121 extern struct inode_operations minix_file_inode_operations;
 122 extern struct inode_operations minix_dir_inode_operations;
 123 extern struct inode_operations minix_symlink_inode_operations;
 124 
 125 #endif /* __KERNEL__ */
 126 
 127 #endif
/* */
root/include/linux/minix_fs.h

INCLUDED FROM
