4472b590c7
This patch changes the prefetch API so that file systems must now provide a set of block numbers, rather than a set of buffers. The result is a leaner and more well-defined API; linear computation of the range of blocks to prefetch; duplicates no longer interfering with the prefetch process; guaranteed inclusion of the block needed next into the prefetch range; and, limits and policy decisions better established by libminixfs now actually being moved into libminixfs. Change-Id: I7e44daf2d2d164bc5e2f1473ad717f3ff0f0a77f
108 lines
3.4 KiB
C
108 lines
3.4 KiB
C
#ifndef __MFS_PROTO_H__
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#define __MFS_PROTO_H__
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/* Some shortcuts to functions in -lminixfs */
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#define put_block(b) lmfs_put_block(b)
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/* Function prototypes. */
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/* Structs used in prototypes must be declared as such first. */
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struct buf;
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struct filp;
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struct inode;
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struct super_block;
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/* cache.c */
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zone_t alloc_zone(dev_t dev, zone_t z);
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void free_zone(dev_t dev, zone_t numb);
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struct buf *get_block(dev_t dev, block_t block, int how);
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/* inode.c */
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struct inode *alloc_inode(dev_t dev, mode_t bits, uid_t uid, gid_t gid);
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void dup_inode(struct inode *ip);
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struct inode *find_inode(dev_t dev, ino_t numb);
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int fs_putnode(ino_t ino_nr, unsigned int count);
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void init_inode_cache(void);
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struct inode *get_inode(dev_t dev, ino_t numb);
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void put_inode(struct inode *rip);
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void update_times(struct inode *rip);
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void rw_inode(struct inode *rip, int rw_flag);
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/* link.c */
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int fs_trunc(ino_t ino_nr, off_t start, off_t end);
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int fs_link(ino_t dir_nr, char *name, ino_t ino_nr);
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ssize_t fs_rdlink(ino_t ino_nr, struct fsdriver_data *data, size_t bytes);
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int fs_rename(ino_t old_dir_nr, char *old_name, ino_t new_dir_nr,
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char *new_name);
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int fs_unlink(ino_t dir_nr, char *name, int call);
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int truncate_inode(struct inode *rip, off_t len);
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/* misc.c */
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void fs_sync(void);
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/* mount.c */
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int fs_mount(dev_t dev, unsigned int flags, struct fsdriver_node *root_node,
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unsigned int *res_flags);
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void fs_unmount(void);
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int fs_mountpt(ino_t ino_nr);
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/* open.c */
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int fs_create(ino_t dir_nr, char *name, mode_t mode, uid_t uid, gid_t gid,
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struct fsdriver_node *node);
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int fs_mkdir(ino_t dir_nr, char *name, mode_t mode, uid_t uid, gid_t gid);
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int fs_mknod(ino_t dir_nr, char *name, mode_t mode, uid_t uid, gid_t gid,
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dev_t dev);
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int fs_slink(ino_t dir_nr, char *name, uid_t uid, gid_t gid,
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struct fsdriver_data *data, size_t bytes);
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void fs_seek(ino_t ino_nr);
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/* path.c */
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int fs_lookup(ino_t dir_nr, char *name, struct fsdriver_node *node,
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int *is_mountpt);
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struct inode *advance(struct inode *dirp, const char *string);
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int search_dir(struct inode *ldir_ptr, const char *string, ino_t *numb,
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int flag);
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/* protect.c */
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int fs_chmod(ino_t ino, mode_t *mode);
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int fs_chown(ino_t ino, uid_t uid, gid_t gid, mode_t *mode);
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/* read.c */
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ssize_t fs_readwrite(ino_t ino_nr, struct fsdriver_data *data, size_t bytes,
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off_t pos, int call);
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block_t read_map(struct inode *rip, off_t pos, int opportunistic);
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struct buf *get_block_map(register struct inode *rip, u64_t position);
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zone_t rd_indir(struct buf *bp, int index);
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ssize_t fs_getdents(ino_t ino_nr, struct fsdriver_data *data, size_t bytes,
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off_t *posp);
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/* stadir.c */
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int fs_stat(ino_t ino_nr, struct stat *statbuf);
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int fs_statvfs(struct statvfs *st);
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/* super.c */
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bit_t alloc_bit(struct super_block *sp, int map, bit_t origin);
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void free_bit(struct super_block *sp, int map, bit_t bit_returned);
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unsigned int get_block_size(dev_t dev);
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int read_super(struct super_block *sp);
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int write_super(struct super_block *sp);
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/* stats.c */
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bit_t count_free_bits(struct super_block *sp, int map);
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/* time.c */
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int fs_utime(ino_t ino_t, struct timespec *atime, struct timespec *mtime);
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/* utility.c */
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unsigned conv2(int norm, int w);
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long conv4(int norm, long x);
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/* write.c */
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void clear_zone(struct inode *rip, off_t pos, int flag);
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struct buf *new_block(struct inode *rip, off_t position);
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void zero_block(struct buf *bp);
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int write_map(struct inode *, off_t, zone_t, int);
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#endif
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