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/*
* teamd_usock_common.h - Teamd unix socket api common things
* Copyright (C) 2013 Jiri Pirko <jiri@resnulli.us>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _TEAMD_USOCK_COMMON_H_
#define _TEAMD_USOCK_COMMON_H_
#include <stdio.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <linux/sockios.h>
#include "teamd.h"
#define TEAMD_USOCK_REQUEST_PREFIX "REQUEST"
#define TEAMD_USOCK_REPLY_ERR_PREFIX "REPLY_ERROR"
#define TEAMD_USOCK_REPLY_SUCC_PREFIX "REPLY_SUCCESS"
static inline void teamd_usock_get_sockpath(char *sockpath, size_t sockpath_len,
const char *team_devname)
{
snprintf(sockpath, sockpath_len, TEAMD_RUN_DIR"%s.sock", team_devname);
}
static inline int teamd_usock_recv_msg(int sock, char **p_str)
{
ssize_t len;
int expected_len;
char *buf;
int ret;
ret = ioctl(sock, SIOCINQ, &expected_len);
if (ret == -1)
return -errno;
buf = malloc(expected_len + 1);
if (!buf)
return -ENOMEM;
len = recv(sock, buf, expected_len, 0);
switch (len) {
case -1:
free(buf);
return -errno;
case 0:
free(buf);
/* use EPIPE to tell caller the connection was broken */
return -EPIPE;
}
buf[len] = '\0';
*p_str = buf;
return 0;
}
static inline char *teamd_usock_msg_getline(char **p_rest)
{
char *start = NULL;
char *rest = NULL;
char *str = *p_rest;
if (!str)
return NULL;
while (1) {
if (*str == '\0')
break;
if ((*str != '\n') && !start)
start = str;
if ((*str == '\n') && start) {
*str = '\0';
rest = str + 1;
break;
}
str++;
}
*p_rest = rest;
return start;
}
#endif /* _TEAMD_USOCK_COMMON_H_ */
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