pfd_cache.c File Reference

#include <errno.h>
#include <fcntl.h>
#include <string.h>
#include <sys/stat.h>
#include <unistd.h>
#include <atalk/directory.h>
#include <atalk/logger.h>
#include <atalk/util.h>
#include "dircache.h"
#include "directory.h"
#include "pfd_cache.h"
#include "volume.h"

Data Structures
struct	pfd_slot

Macros
#define	PFD_SLOTS   16
#define	PFD_OPEN_FLAGS   (O_RDONLY | O_DIRECTORY)

Functions
static void	pfd_init_once (void)
static void	slot_retire (struct pfd_slot *s)
static int	slot_fill (struct pfd_slot *s, const struct vol *vol, const struct dir *parent)
static void	slot_move_to_front (int i)
static int	pfd_get (const struct vol *vol, const struct dir *parent)
static void	pfd_repair_path (struct dir *entry, const struct dir *parent)
int	pfd_ostat (const struct vol *vol, struct dir *entry, struct stat *st, int options)
	ostat(cfrombstr(entry->d_fullpath), st, options), accelerated.
void	pfd_purge (uint16_t vid, cnid_t did)
void	pfd_purge_vol (uint16_t vid)
void	pfd_shutdown (void)
void	pfd_stats_get (struct pfd_stats *out)
void	pfd_log_stats (void)

Variables
static struct pfd_slot	pfd_slots [PFD_SLOTS]
static int	pfd_initialized
static struct pfd_stats	pfd_stat

Macro Definition Documentation

PFD_OPEN_FLAGS

#define PFD_OPEN_FLAGS   (O_RDONLY | O_DIRECTORY)

PFD_SLOTS

#define PFD_SLOTS   16

Function Documentation

pfd_get()

int pfd_get ( const struct vol * vol, const struct dir * parent )

static

pfd_init_once()

void pfd_init_once ( void )

static

pfd_log_stats()

void pfd_log_stats

(

void

)

pfd_ostat()

int pfd_ostat	(	const struct vol *	vol,
		struct dir *	entry,
		struct stat *	st,
		int	options )

ostat(cfrombstr(entry->d_fullpath), st, options), accelerated.

Resolves entry's parent to a cached dir fd and fstatat()s the leaf name; any impediment (no parent entry, ghost parent, open failure) falls back to the full-path ostat internally. Callers cannot observe which path ran: return value and errno are exactly what ostat would produce.

On success the entry's d_fullpath is additionally repaired against the parent's — the relative stat can outlive a rename the path string hasn't caught up with (see pfd_repair_path).

pfd_purge()

void pfd_purge	(	uint16_t	vid,
		cnid_t	did )

pfd_purge_vol()

void pfd_purge_vol

(

uint16_t

vid

)

pfd_repair_path()

void pfd_repair_path ( struct dir * entry, const struct dir * parent )

static

pfd_shutdown()

void pfd_shutdown

(

void

)

pfd_stats_get()

void pfd_stats_get

(

struct pfd_stats *

out

)

slot_fill()

int slot_fill ( struct pfd_slot * s, const struct vol * vol, const struct dir * parent )

static

slot_move_to_front()

void slot_move_to_front ( int i )

static

slot_retire()

void slot_retire ( struct pfd_slot * s )

static

Variable Documentation

pfd_initialized

int pfd_initialized

static

pfd_slots

struct pfd_slot pfd_slots[PFD_SLOTS]

static

pfd_stat

struct pfd_stats pfd_stat

static