108 lines
3.6 KiB
C
108 lines
3.6 KiB
C
#ifndef _LINUX_EXT_FS_H
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#define _LINUX_EXT_FS_H
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/*
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* The ext filesystem constants/structures
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*/
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#define EXT_NAME_LEN 255
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#define EXT_ROOT_INO 1
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#define EXT_SUPER_MAGIC 0x137D
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#define EXT_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct ext_inode)))
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struct ext_inode {
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unsigned short i_mode;
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unsigned short i_uid;
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unsigned long i_size;
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unsigned long i_time;
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unsigned short i_gid;
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unsigned short i_nlinks;
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unsigned long i_zone[12];
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};
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struct ext_free_inode {
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unsigned long count;
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unsigned long free[14];
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unsigned long next;
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};
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struct ext_free_block {
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unsigned long count;
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unsigned long free[254];
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unsigned long next;
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};
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struct ext_super_block {
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unsigned long s_ninodes;
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unsigned long s_nzones;
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unsigned long s_firstfreeblock;
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unsigned long s_freeblockscount;
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unsigned long s_firstfreeinode;
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unsigned long s_freeinodescount;
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unsigned long s_firstdatazone;
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unsigned long s_log_zone_size;
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unsigned long s_max_size;
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unsigned long s_reserved1;
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unsigned long s_reserved2;
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unsigned long s_reserved3;
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unsigned long s_reserved4;
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unsigned long s_reserved5;
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unsigned short s_magic;
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};
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struct ext_dir_entry {
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unsigned long inode;
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unsigned short rec_len;
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unsigned short name_len;
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char name[EXT_NAME_LEN];
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};
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extern int ext_open(struct inode * inode, struct file * filp);
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extern void ext_release(struct inode * inode, struct file * filp);
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extern int ext_lookup(struct inode * dir,const char * name, int len,
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struct inode ** result);
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extern int ext_create(struct inode * dir,const char * name, int len, int mode,
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struct inode ** result);
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extern int ext_mkdir(struct inode * dir, const char * name, int len, int mode);
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extern int ext_rmdir(struct inode * dir, const char * name, int len);
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extern int ext_unlink(struct inode * dir, const char * name, int len);
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extern int ext_symlink(struct inode * inode, const char * name, int len,
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const char * symname);
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extern int ext_link(struct inode * oldinode, struct inode * dir, const char * name, int len);
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extern int ext_mknod(struct inode * dir, const char * name, int len, int mode, int rdev);
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extern int ext_rename(struct inode * old_dir, const char * old_name, int old_len,
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struct inode * new_dir, const char * new_name, int new_len);
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extern struct inode * ext_new_inode(const struct inode * dir);
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extern void ext_free_inode(struct inode * inode);
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extern unsigned long ext_count_free_inodes(struct super_block *sb);
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extern int ext_new_block(struct super_block * sb);
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extern void ext_free_block(struct super_block * sb, int block);
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extern unsigned long ext_count_free_blocks(struct super_block *sb);
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extern int ext_bmap(struct inode *,int);
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extern struct buffer_head * ext_getblk(struct inode *, int, int);
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extern struct buffer_head * ext_bread(struct inode *, int, int);
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extern void ext_truncate(struct inode *);
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extern void ext_put_super(struct super_block *);
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extern void ext_write_super(struct super_block *);
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extern struct super_block *ext_read_super(struct super_block *,void *,int);
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extern void ext_read_inode(struct inode *);
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extern void ext_write_inode(struct inode *);
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extern void ext_put_inode(struct inode *);
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extern void ext_statfs(struct super_block *, struct statfs *);
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extern int ext_sync_inode(struct inode *);
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extern int ext_sync_file(struct inode *, struct file *);
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extern int ext_lseek(struct inode *, struct file *, off_t, int);
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extern int ext_read(struct inode *, struct file *, char *, int);
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extern int ext_write(struct inode *, struct file *, char *, int);
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extern struct inode_operations ext_file_inode_operations;
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extern struct inode_operations ext_dir_inode_operations;
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extern struct inode_operations ext_symlink_inode_operations;
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#endif
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