pfd_cache.h

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/* Parent-directory fd cache — module and threading contract documented in
 * pfd_cache.c */
 
#ifndef AFPD_PFD_CACHE_H
#define AFPD_PFD_CACHE_H 1
 
#include <sys/stat.h>
 
#include <atalk/directory.h>
 
#include "volume.h"
 
/* One absolute re-ground probe per this many uses of a slot — the
 * ground-truth bound on rename-away staleness (unit tests assert on it) */
#define PFD_REGROUND_INTERVAL 256
 
struct pfd_stats {
    unsigned long long hits;            
    unsigned long long opens;           
    unsigned long long
    sync_refreshes;  
    unsigned long long probe_refreshes; 
    unsigned long long regrounds;       
    unsigned long long fallbacks;       
    unsigned long long purges;          
    unsigned long long path_repairs;    
};
 
extern int  pfd_ostat(const struct vol *vol, struct dir *entry,
                      struct stat *st, int options);
extern void pfd_purge(uint16_t vid, cnid_t did);
extern void pfd_purge_vol(uint16_t vid);
extern void pfd_shutdown(void);
extern void pfd_log_stats(void);
extern void pfd_stats_get(struct pfd_stats *out);
 
#endif /* AFPD_PFD_CACHE_H */