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/*
* FILE: s5fs_subr.h
* AUTHOR: afenn
* DESCR: S5 low-level subroutines
*/
#pragma once
#include "types.h"
#include "mm/pframe.h"
#include "fs/s5fs/s5fs.h"
struct s5fs;
struct s5_node;
long s5_alloc_inode(struct s5fs *s5fs, uint16_t type, devid_t devid);
void s5_free_inode(struct s5fs *s5fs, ino_t ino);
ssize_t s5_read_file(struct s5_node *sn, size_t pos, char *buf, size_t len);
ssize_t s5_write_file(struct s5_node *sn, size_t pos, const char *buf,
size_t len);
long s5_link(struct s5_node *dir, const char *name, size_t namelen,
struct s5_node *child);
long s5_find_dirent(struct s5_node *dir, const char *name, size_t namelen,
size_t *filepos);
void s5_remove_dirent(struct s5_node *dir, const char *name, size_t namelen,
struct s5_node *ent);
void s5_replace_dirent(struct s5_node *sn, const char *name, size_t namelen,
struct s5_node *old, struct s5_node *new);
long s5_file_block_to_disk_block(struct s5_node *sn, size_t file_blocknum,
int alloc, int *new);
long s5_inode_blocks(struct s5_node *vnode);
void s5_remove_blocks(struct s5_node *vnode);
/* Converts a vnode_t* to the s5fs_t* (s5fs file system) struct */
#define VNODE_TO_S5FS(vn) ((s5fs_t *)((vn)->vn_fs->fs_i))
#ifdef OLD
/* Converts an s5fs_t* to its memory object (the memory object of the block device) */
#define S5FS_TO_VMOBJ(s5fs) (&(s5fs)->s5f_bdev->bd_mobj)
#endif
pframe_t *s5_cache_and_clear_block(mobj_t *mo, long block, long loc);
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