comm.c File Reference

#include <assert.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/param.h>
#include <sys/select.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/uio.h>
#include <time.h>
#include <unistd.h>
#include <atalk/cnid_bdb_private.h>
#include <atalk/compat.h>
#include <atalk/logger.h>
#include <atalk/util.h>
#include "db_param.h"
#include "usockfd.h"
#include "comm.h"

Data Structures
struct	connection

Macros
#define	USE_WRITEV

Functions
static void	invalidate_fd (int fd)
static int	check_fd (time_t timeout, const sigset_t *sigmask, time_t *now)
	Check for client requests.
int	comm_init (struct db_param *dbp, int ctrlfd, int clntfd)
int	comm_nbe (void)
int	comm_rcv (struct cnid_dbd_rqst *rqst, time_t timeout, const sigset_t *sigmask, time_t *now)
int	comm_snd (struct cnid_dbd_rply *rply)

Variables
static int	control_fd
static int	cur_fd
static struct connection *	fd_table
static int	fd_table_size
static int	fds_in_use = 0

Macro Definition Documentation

USE_WRITEV

#define USE_WRITEV

Function Documentation

check_fd()

static int check_fd ( time_t  timeout, const sigset_t *  sigmask, time_t *  now  )

static

Check for client requests.

We keep up to fd_table_size open descriptors in fd_table. If the table is full and we get a new descriptor via control_fd, we close a random decriptor in the table to make space. The affected client will automatically reconnect. For an EOF (descriptor is closed by the client, so a read here returns 0) comm_rcv will take care of things and clean up fd_table. The same happens for any read/write errors.

comm_init()

int comm_init	(	struct db_param *	dbp,
		int	ctrlfd,
		int	clntfd
	)

comm_nbe()

int comm_nbe

(

void

)

comm_rcv()

int comm_rcv	(	struct cnid_dbd_rqst *	rqst,
		time_t	timeout,
		const sigset_t *	sigmask,
		time_t *	now
	)

comm_snd()

int comm_snd

(

struct cnid_dbd_rply *

rply

)

invalidate_fd()

static void invalidate_fd ( int  fd )

static

Variable Documentation

control_fd

int control_fd

static

cur_fd

int cur_fd

static

fd_table

struct connection* fd_table

static

fd_table_size

int fd_table_size

static

fds_in_use

int fds_in_use = 0

static