93 lines
3.3 KiB
C
93 lines
3.3 KiB
C
#pragma once
|
|
|
|
#include <u_types.h>
|
|
#include <stdint.h>
|
|
#include <sys/types.h>
|
|
|
|
#define FS_FILE_NR 16 //!< 最大数量
|
|
|
|
typedef struct file
|
|
{
|
|
off_t f_off; //!< 文件读写偏移
|
|
umword_t f_flags; //!< flags.
|
|
void *priv_data; //!< 私有数据
|
|
} file_t;
|
|
|
|
typedef struct inode
|
|
{
|
|
mode_t i_mode; //!< 权限信息
|
|
size_t i_size; //!< 文件大小
|
|
ino_t i_no; //!< inode编号
|
|
size_t i_hlink; //!< 硬连接数
|
|
void *i_priv_data; //!< inode的私有数据
|
|
} inode_t;
|
|
|
|
typedef struct super_operations
|
|
{
|
|
|
|
struct inode *(*alloc_inode)(struct inode *p_inode); //!< 申请指定文件系统的inode
|
|
void (*free_inode)(struct inode *p_inode); //!< 释放指定文件系统的inode
|
|
|
|
int32_t (*read_inode)(struct inode *p_r_ino);
|
|
int (*notify_change)(int flags, struct inode *);
|
|
void (*write_inode)(struct inode *);
|
|
void (*put_inode)(struct inode *);
|
|
void (*put_super)(struct super_block *);
|
|
void (*write_super)(struct super_block *);
|
|
void (*statfs)(struct super_block *, struct statfs *);
|
|
int (*remount_fs)(struct super_block *, int *, char *);
|
|
} super_operations_t;
|
|
|
|
typedef struct super_block
|
|
{
|
|
struct inode *root_inode; //!< 根节点
|
|
super_operations_t *sb_ops; //!< super_block的操作
|
|
umword_t s_magic;
|
|
} super_block_t;
|
|
|
|
/**
|
|
* file对文件的操作
|
|
*/
|
|
struct file_operations
|
|
{
|
|
int (*lseek)(struct inode *, struct file *, off_t, int);
|
|
int (*read)(struct inode *, struct file *, char *, int);
|
|
int (*write)(struct inode *, struct file *, char *, int);
|
|
int (*readdir)(struct inode *, struct file *, struct dirent *, int);
|
|
int (*select)(struct inode *, struct file *, int, uint32_t *);
|
|
int (*poll)(struct inode *inode, struct file *fp, void *wait_tb,
|
|
struct timeval *timeout);
|
|
int (*ioctl)(struct inode *, struct file *, unsigned int, unsigned long);
|
|
int (*mmap)(struct inode *inode, struct file *fp, unsigned long addr,
|
|
size_t len, int mask, unsigned long off);
|
|
int (*mumap)(struct inode *inode, void *start, size_t len);
|
|
int (*open)(struct inode *inode, struct file *fp);
|
|
void (*release)(struct inode *ino, struct file *f);
|
|
int (*fsync)(struct inode *, struct file *);
|
|
};
|
|
|
|
/**
|
|
* inode对应的操作
|
|
*/
|
|
struct inode_operations
|
|
{
|
|
struct file_operations *default_file_ops;
|
|
int (*create)(struct inode *dir, const char *name, int len, int mode,
|
|
struct inode **result);
|
|
int (*lookup)(struct inode *dir, const char *file_name, int len,
|
|
struct inode **ret_inode);
|
|
int (*link)(struct inode *, struct inode *, const char *, int);
|
|
int (*unlink)(struct inode *, const char *, int);
|
|
int (*symlink)(struct inode *, const char *, int, const char *);
|
|
int (*mkdir)(struct inode *, const char *, int, int);
|
|
int (*rmdir)(struct inode *, const char *, int);
|
|
int (*mknod)(struct inode *, const char *, int, int, int);
|
|
int (*rename)(struct inode *, const char *, int, struct inode *, const char *,
|
|
int);
|
|
int (*readlink)(struct inode *, char *, int);
|
|
int (*follow_link)(struct inode *, struct inode *, int, int, struct inode **);
|
|
int (*bmap)(struct inode *, int);
|
|
void (*truncate)(struct inode *, int);
|
|
int (*permission)(struct inode *, int);
|
|
};
|