The management of the IP/name cache. More...

#include "HashData.h"
#include "HashTable.h"
#include "log.h"
#include "nfs_core.h"
#include "nfs_exports.h"
#include "config_parsing.h"
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>

Functions
uint32_t	ip_name_value_hash_func (hash_parameter_t p_hparam, hash_buffer_t buffclef)
uint64_t	ip_name_rbt_hash_func (hash_parameter_t p_hparam, hash_buffer_t buffclef)
int	compare_ip_name (hash_buffer_t buff1, hash_buffer_t buff2)
int	display_ip_name_key (hash_buffer_t pbuff, char str)
int	display_ip_name_val (hash_buffer_t pbuff, char str)
int	nfs_ip_name_add (sockaddr_t ipaddr, char hostname)
int	nfs_ip_name_get (sockaddr_t ipaddr, char hostname)
int	nfs_ip_name_remove (sockaddr_t *ipaddr)
int	nfs_Init_ip_name (nfs_ip_name_parameter_t param)
int	nfs_ip_name_populate (char *path)
void	nfs_ip_name_get_stats (hash_stat_t *phstat)
Variables
hash_table_t *	ht_ip_name
unsigned int	expiration_time

Detailed Description

The management of the IP/name cache.

Author:

Author:: leibovic

Date:

Date:: 2006/01/20 07:39:23

Version:

Revision:: 1.6

nfs_ip_name.c : The management of the IP/name cache.

Definition in file nfs_ip_name.c.

Function Documentation

int compare_ip_name	(	hash_buffer_t *	buff1,
		hash_buffer_t *	buff2
	)

compare_ip_name: compares the ip address stored in the key buffers.

compare the ip address stored in the key buffers. This function is to be used as 'compare_key' field in the hashtable storing the nfs duplicated requests.

Parameters:

buff1	[IN] first key
buff2	[IN] second key

Returns:: 0 if keys are identifical, 1 if they are different.

Definition at line 115 of file nfs_ip_name.c.

int display_ip_name_key	(	hash_buffer_t *	pbuff,
		char *	str
	)

display_ip_name_key: displays the ip_name stored in the buffer.

displays the ip_name key stored in the buffer. This function is to be used as 'key_to_str' field.

Parameters:

buff1	[IN] buffer to display
buff2	[OUT] output string

Returns:: number of character written.

Definition at line 132 of file nfs_ip_name.c.

int display_ip_name_val	(	hash_buffer_t *	pbuff,
		char *	str
	)

display_ip_name_vale: displays the ip_name stored in the buffer.

displays the ip_name value stored in the buffer. This function is to be used as 'val_to_str' field.

Parameters:

buff1	[IN] buffer to display
buff2	[OUT] output string

Returns:: number of character written.

Definition at line 152 of file nfs_ip_name.c.

uint64_t ip_name_rbt_hash_func	(	hash_parameter_t *	p_hparam,
		hash_buffer_t *	buffclef
	)

ip_name_rbt_hash_func: computes the rbt value for the entry in IP/name cache.

Computes the rbt value for the entry in IP/name cache. This function is called internal in the HasTable_* function

Parameters:

hparam	[IN] hash table parameter.
buffcleff[in]	pointer to the hash key buffer

Returns:: the computed rbt value.

See also:: HashTable_Init

Definition at line 96 of file nfs_ip_name.c.

uint32_t ip_name_value_hash_func	(	hash_parameter_t *	p_hparam,
		hash_buffer_t *	buffclef
	)

ip_name_rbt_hash_func: computes the hash value for the entry in IP/name cache.

Computes the hash value for the entry in IP/name cache. This function is called internal in the HasTable_* function

Parameters:

hparam	[IN] hash table parameter.
buffcleff[in]	pointer to the hash key buffer

Returns:: the computed hash value.

See also:: HashTable_Init

Definition at line 75 of file nfs_ip_name.c.

int nfs_Init_ip_name ( nfs_ip_name_parameter_t param )

nfs_Init_ip_name: Init the hashtable for IP/name cache.

Perform all the required initialization for hashtable IP/name cache

Parameters:

param [IN] parameter used to init the ip name cache

Returns:: 0 if successful, -1 otherwise

Definition at line 348 of file nfs_ip_name.c.

int nfs_ip_name_add	(	sockaddr_t *	ipaddr,
		char *	hostname
	)

nfs_ip_name_add: adds an entry in the duplicate requests cache.

Adds an entry in the duplicate requests cache.

Parameters:

ipaddr	[IN] the ipaddr to be used as key
hostname	[IN] the hostname added (found by using gethostbyaddr)

Returns:: IP_NAME_SUCCESS if successfull
.; IP_NAME_INSERT_MALLOC_ERROR if an error occured during the insertion process; IP_NAME_NETDB_ERROR if an error occured during the netdb query (via gethostbyaddr).

Definition at line 174 of file nfs_ip_name.c.

int nfs_ip_name_get	(	sockaddr_t *	ipaddr,
		char *	hostname
	)

nfs_ip_name_get: Tries to get an entry for ip_name cache.

Tries to get an entry for ip_name cache.

Parameters:

ipaddr	[IN] the ip address requested
hostname	[OUT] the hostname

Returns:: the result previously set if *pstatus == IP_NAME_SUCCESS

Definition at line 265 of file nfs_ip_name.c.

void nfs_ip_name_get_stats ( hash_stat_t * phstat )

nfs_ip_name_get_stats: gets the hash table statistics for the IP_NAME Table.

Gets the hash table statistics for the IP_NAME Table.

Parameters:

phstat [OUT] pointer to the resulting stats.

Returns:: nothing (void function)

See also:: HashTable_GetStats

Definition at line 476 of file nfs_ip_name.c.

int nfs_ip_name_populate ( char * path )

Definition at line 362 of file nfs_ip_name.c.

int nfs_ip_name_remove ( sockaddr_t * ipaddr )

nfs_ip_name_remove: Tries to remove an entry for ip_name cache

Tries to remove an entry for ip_name cache.

Parameters:

ipaddr [IN] the ip address to be uncached.

Returns:: the result previously set if *pstatus == IP_NAME_SUCCESS

Definition at line 307 of file nfs_ip_name.c.

Variable Documentation

unsigned int expiration_time

Definition at line 58 of file nfs_ip_name.c.

hash_table_t* ht_ip_name

Definition at line 57 of file nfs_ip_name.c.

nfs_ip_name.c File Reference

Functions

Variables

Detailed Description

Function Documentation

Variable Documentation