0314acfb2d
Mostly removal of unused parameters from calls. Change-Id: I0eb7b568265d1669492d958e78b9e69d7cf6fc05
74 lines
2.6 KiB
C
74 lines
2.6 KiB
C
/* Prototypes for -lminixfs. */
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#ifndef _MINIX_FSLIB_H
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#define _MINIX_FSLIB_H
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#include <minix/fsdriver.h>
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struct buf {
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/* Data portion of the buffer. */
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void *data;
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/* Header portion of the buffer - internal to libminixfs. */
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struct buf *lmfs_next; /* used to link all free bufs in a chain */
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struct buf *lmfs_prev; /* used to link all free bufs the other way */
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struct buf *lmfs_hash; /* used to link bufs on hash chains */
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dev_t lmfs_dev; /* major | minor device where block resides */
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block64_t lmfs_blocknr; /* block number of its (minor) device */
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char lmfs_count; /* number of users of this buffer */
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char lmfs_needsetcache; /* to be identified to VM */
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unsigned int lmfs_bytes; /* Number of bytes allocated in bp */
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u32_t lmfs_flags; /* Flags shared between VM and FS */
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/* If any, which inode & offset does this block correspond to?
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* If none, VMC_NO_INODE
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*/
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ino_t lmfs_inode;
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u64_t lmfs_inode_offset;
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};
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void lmfs_markdirty(struct buf *bp);
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void lmfs_markclean(struct buf *bp);
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int lmfs_isclean(struct buf *bp);
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dev_t lmfs_dev(struct buf *bp);
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int lmfs_bufs_in_use(void);
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int lmfs_nr_bufs(void);
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void lmfs_flushall(void);
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void lmfs_flushdev(dev_t dev);
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int lmfs_fs_block_size(void);
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void lmfs_may_use_vmcache(int);
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void lmfs_set_blocksize(int blocksize);
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void lmfs_reset_rdwt_err(void);
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int lmfs_rdwt_err(void);
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void lmfs_buf_pool(int new_nr_bufs);
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struct buf *lmfs_get_block(dev_t dev, block64_t block, int how);
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struct buf *lmfs_get_block_ino(dev_t dev, block64_t block, int how, ino_t ino,
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u64_t off);
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void lmfs_put_block(struct buf *bp);
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void lmfs_free_block(dev_t dev, block64_t block);
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void lmfs_zero_block_ino(dev_t dev, ino_t ino, u64_t off);
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void lmfs_invalidate(dev_t device);
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void lmfs_rw_scattered(dev_t, struct buf **, int, int);
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void lmfs_setquiet(int q);
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void lmfs_cache_reevaluate(void);
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void lmfs_blockschange(int delta);
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/* calls that libminixfs does into fs */
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void fs_blockstats(u64_t *blocks, u64_t *free);
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/* get_block arguments */
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#define NORMAL 0 /* forces get_block to do disk read */
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#define NO_READ 1 /* prevents get_block from doing disk read */
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#define PREFETCH 2 /* tells get_block not to read or mark dev */
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#define PEEK 3 /* returns NULL if not in cache or VM cache */
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#define END_OF_FILE (-104) /* eof detected */
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/* Block I/O helper functions. */
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void lmfs_driver(dev_t dev, char *label);
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ssize_t lmfs_bio(dev_t dev, struct fsdriver_data *data, size_t bytes,
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off_t pos, int call);
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void lmfs_bflush(dev_t dev);
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#endif /* _MINIX_FSLIB_H */
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