NetBSD/libexec/lfs_cleanerd/cleaner.h

76 lines
2.0 KiB
C

#ifndef CLEANER_H_
#define CLEANER_H_
/*
* An abbreviated version of the SEGUSE data structure.
*/
struct clfs_seguse {
u_int32_t nbytes;
u_int32_t nsums;
u_int32_t flags;
u_int64_t lastmod;
u_int64_t priority;
};
/*
* The cleaner's view of the superblock data structure.
*/
struct clfs {
struct dlfs lfs_dlfs; /* Leverage LFS lfs_* defines here */
/* Ifile */
int clfs_ifilefd; /* Ifile file descriptor */
struct uvnode *lfs_ivnode; /* Ifile vnode */
struct lfs_fhandle clfs_ifilefh; /* Ifile file handle */
/* Device */
int clfs_devfd; /* Device file descriptor */
struct uvnode *clfs_devvp; /* Device vnode */
char *clfs_dev; /* Name of device */
/* Cache of segment status */
struct clfs_seguse *clfs_segtab; /* Abbreviated seguse table */
struct clfs_seguse **clfs_segtabp; /* pointers to same */
/* Progress status */
int clfs_nactive; /* How many segments' blocks we have */
int clfs_onhold; /* If cleaning this fs is on hold */
};
/*
* Fraction of the could-be-clean segments required to be clean.
*/
#define BUSY_LIM 0.5
#define IDLE_LIM 0.9
__BEGIN_DECLS
/* lfs_cleanerd.c */
void pwarn(const char *, ...);
void calc_cb(struct clfs *, int, struct clfs_seguse *);
int clean_fs(struct clfs *, CLEANERINFO *);
void dlog(char *, ...);
void handle_error(struct clfs **, int);
int init_fs(struct clfs *, char *);
int invalidate_segment(struct clfs *, int);
void lfs_ientry(IFILE **, struct clfs *, ino_t, struct ubuf **);
int load_segment(struct clfs *, int, BLOCK_INFO **, int *);
int needs_cleaning(struct clfs *, CLEANERINFO *);
int32_t parse_pseg(struct clfs *, daddr_t, BLOCK_INFO **, int *);
int reinit_fs(struct clfs *);
void reload_ifile(struct clfs *);
void toss_old_blocks(struct clfs *, BLOCK_INFO **, int *, int *);
/* cleansrv.c */
void check_control_socket(void);
void try_to_become_master(int, char **);
/* coalesce.c */
int log2int(int);
int clean_all_inodes(struct clfs *);
int fork_coalesce(struct clfs *);
__END_DECLS
#endif /* CLEANER_H_ */