freebsd-skq/sbin/hastd/proto_common.c
Pawel Jakub Dawidek 5571414ca8 Fix a problem where hastd will stuck in recv(2) after sending request to
secondary, which died between send(2) and recv(2). Do it by adding timeout
to recv(2) for primary incoming and outgoing sockets and secondary outgoing
socket.

Reported by:	Mikolaj Golub <to.my.trociny@gmail.com>
Tested by:	Mikolaj Golub <to.my.trociny@gmail.com>
MFC after:	3 days
2010-04-29 15:36:32 +00:00

86 lines
2.4 KiB
C

/*-
* Copyright (c) 2009-2010 The FreeBSD Foundation
* All rights reserved.
*
* This software was developed by Pawel Jakub Dawidek under sponsorship from
* the FreeBSD Foundation.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/types.h>
#include <sys/socket.h>
#include <assert.h>
#include <errno.h>
#include <stdlib.h>
#include <strings.h>
#include "proto_impl.h"
/* Maximum size of packet we want to use when sending data. */
#ifndef MAX_SEND_SIZE
//#define MAX_SEND_SIZE 32768
#define MAX_SEND_SIZE 131072
#endif
int
proto_common_send(int fd, const unsigned char *data, size_t size)
{
ssize_t done;
size_t sendsize;
do {
sendsize = size < MAX_SEND_SIZE ? size : MAX_SEND_SIZE;
done = send(fd, data, sendsize, MSG_NOSIGNAL);
if (done == 0)
return (ENOTCONN);
else if (done < 0) {
if (errno == EINTR)
continue;
return (errno);
}
data += done;
size -= done;
} while (size > 0);
return (0);
}
int
proto_common_recv(int fd, unsigned char *data, size_t size)
{
ssize_t done;
do {
done = recv(fd, data, size, MSG_WAITALL);
} while (done == -1 && errno == EINTR);
if (done == 0)
return (ENOTCONN);
else if (done < 0)
return (errno);
return (0);
}