105 lines
2.2 KiB
C
105 lines
2.2 KiB
C
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#ifndef __KERNEL_FS_FS_H__
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# define __KERNEL_FS_FS_H__
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#include <stddef.h>
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#include <stdint.h>
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#include <kernel/types.h>
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// FS flags
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#define FS_RDWR (0x01)
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#define FS_RDONLY (0x02)
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#define FS_NO_DEVICE (0x02)
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// Internal file operations
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struct file_system_operations
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{
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void *(*mount)(void);
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void *(*umount)(void);
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};
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// Internal super block operations
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// TODO
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/*struct super_operations
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{
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// Inode management part.
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// void *(*alloc_inode)(struct super_block *sb);
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// void (*destroy_inode)(void *inode);
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// Internal FS primitives
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// int (*sync_fs)(struct super_block *sb, int wait);
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// int (*statfs) (struct dentry *, struct kstatfs *);
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};*/
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// Internal Inode operations
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struct inode_operations
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{
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// Inode walk part.
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void *(*find_next_sibling)(void *inode);
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void *(*find_first_child)(void *inode);
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void *(*find_parent)(void *inode);
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// Inode memory part.
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void *(*create)(void *parent_inode, char const *name, mode_t mode);
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void *(*mkdir)(void *parent_inode, char const *name, mode_t mode);
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int (*rmdir)(void *inode);
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int (*rename)(void *indde, char const *name);
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// Inode informartions part.
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int (*get_name)(void *inode, char *buf, size_t count);
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mode_t (*get_mode)(void *inode);
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};
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struct file_operations
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{
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ssize_t (*read)(void *inode, void *buf, size_t count, off_t pos);
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ssize_t (*write)(void *inode, const void *buf, size_t count, off_t pos);
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};
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// Based on UNIX Kernel 2.6.39
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struct file_system_type
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{
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const char *fs_name;
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uint8_t fs_flags;
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struct file_system_operations filesystem_operations;
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struct file_operations file_operations;
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struct inode_operations inode_operations;
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struct file_system_type *next;
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};
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#define VFS_DENTRY_NAME_LENGHT 24
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// Used to walk into VFS
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struct dentry
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{
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// File name.
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char name[VFS_DENTRY_NAME_LENGHT];
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// Internal inode
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void *inode;
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// Internal file informations
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mode_t mode;
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// Linked list
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struct dentry *parent;
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struct dentry *child;
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struct dentry *next;
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// Mount point
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struct {
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void *inode;
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struct file_operations *file_op;
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struct inode_operations *inode_op;
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} mnt;
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// Internal dentry openrations
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struct {
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struct file_operations *file_op;
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struct inode_operations *inode_op;
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} dentry_op;
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};
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#endif /*__KERNEL_FS_FS_H__*/
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