NetBSD/libexec/lfs_cleanerd/fdfs.h

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struct fd_buf {
char *buf; /* The buffer itself */
daddr_t start; /* Start of this buffer */
daddr_t end; /* End of this buffer */
};
struct fdfs {
int fd_fd; /* The file descriptor */
int fd_bufc; /* Number of segment buffers */
int fd_bufi; /* Index to next segment buffer */
struct fd_buf *fd_bufp; /* The buffers */
off_t fd_bsize; /* block size */
off_t fd_ssize; /* segment size */
};
struct uvnode * fd_vget(int, int, int, int);
int fd_preload(struct uvnode *, daddr_t);
int fd_vop_strategy(struct ubuf *);
int fd_vop_bwrite(struct ubuf *);
int fd_vop_bmap(struct uvnode *, daddr_t, daddr_t *);
char *fd_ptrget(struct uvnode *, daddr_t);
void fd_reclaim(struct uvnode *);
void fd_release(struct uvnode *);
void fd_release_all(struct uvnode *);