Home | History | Annotate | Line # | Download | only in lfs_cleanerd
cleaner.h revision 1.15 
      1 #ifndef CLEANER_H_
      2 #define CLEANER_H_
      3 
      4 /*
      5  * An abbreviated version of the SEGUSE data structure.
      6  */
      7 struct clfs_seguse {
      8 	u_int32_t nbytes;
      9 	u_int32_t nsums;
     10 	u_int32_t flags;
     11 	u_int64_t lastmod;
     12 	u_int64_t priority;
     13 };
     14 
     15 /*
     16  * The cleaner's view of the superblock data structure.
     17  */
     18 struct clfs {
     19 	union {
     20 		struct dlfs u_32;
     21 		struct dlfs64 u_64;
     22 	} lfs_dlfs_u;
     23 	unsigned lfs_is64 : 1,
     24 		lfs_dobyteswap : 1,
     25 		lfs_hasolddirfmt : 1;
     26 
     27 	/* Ifile */
     28 	int clfs_ifilefd;	   /* Ifile file descriptor */
     29 	struct uvnode *lfs_ivnode; /* Ifile vnode */
     30 	struct lfs_fhandle clfs_ifilefh;	   /* Ifile file handle */
     31 
     32 	/* Device */
     33 	int clfs_devfd;		   /* Device file descriptor */
     34 	struct uvnode *clfs_devvp; /* Device vnode */
     35 	char *clfs_dev;		   /* Name of device */
     36 
     37 	/* Cache of segment status */
     38 	struct clfs_seguse  *clfs_segtab;  /* Abbreviated seguse table */
     39 	struct clfs_seguse **clfs_segtabp; /* pointers to same */
     40 
     41 	/* Progress status */
     42 	int clfs_nactive;	   /* How many segments' blocks we have */
     43 	int clfs_onhold;	   /* If cleaning this fs is on hold */
     44 };
     45 
     46 /*
     47  * Get lfs accessors that use struct clfs. This must come after the
     48  * definition of struct clfs. (blah)
     49  */
     50 #define STRUCT_LFS struct clfs
     51 #include <ufs/lfs/lfs_accessors.h>
     52 
     53 /*
     54  * Fraction of the could-be-clean segments required to be clean.
     55  */
     56 #define BUSY_LIM 0.5
     57 #define IDLE_LIM 0.9
     58 
     59 __BEGIN_DECLS
     60 
     61 /* lfs_cleanerd.c */
     62 void pwarn(const char *, ...);
     63 void calc_cb(struct clfs *, int, struct clfs_seguse *);
     64 void dlog(const char *, ...);
     65 void handle_error(struct clfs **, int);
     66 int init_fs(struct clfs *, char *);
     67 int invalidate_segment(struct clfs *, int);
     68 void lfs_ientry(IFILE **, struct clfs *, ino_t, struct ubuf **);
     69 int load_segment(struct clfs *, int, BLOCK_INFO **, int *);
     70 int reinit_fs(struct clfs *);
     71 void reload_ifile(struct clfs *);
     72 void toss_old_blocks(struct clfs *, BLOCK_INFO **, blkcnt_t *, int *);
     73 
     74 /* cleansrv.c */
     75 void check_control_socket(void);
     76 void try_to_become_master(int, char **);
     77 
     78 /* coalesce.c */
     79 int clean_all_inodes(struct clfs *);
     80 int fork_coalesce(struct clfs *);
     81 
     82 __END_DECLS
     83 
     84 #endif /* CLEANER_H_ */
     85