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/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2013 Intel Corporation. All rights reserved.
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stddef.h>
#include <errno.h>
#include <stdint.h>
#include <string.h>
#include <signal.h>
#include <sys/socket.h>
#include "hal-msg.h"
#include "ipc.h"
#include "log.h"
static int cmd_sk = -1;
static int notif_sk = -1;
void ipc_init(int command_sk, int notification_sk)
{
cmd_sk = command_sk;
notif_sk = notification_sk;
}
void ipc_cleanup(void)
{
cmd_sk = -1;
notif_sk = -1;
}
static void ipc_send(int sk, uint8_t service_id, uint8_t opcode, uint16_t len,
void *param, int fd)
{
struct msghdr msg;
struct iovec iv[2];
struct hal_hdr m;
char cmsgbuf[CMSG_SPACE(sizeof(int))];
struct cmsghdr *cmsg;
memset(&msg, 0, sizeof(msg));
memset(&m, 0, sizeof(m));
memset(cmsgbuf, 0, sizeof(cmsgbuf));
m.service_id = service_id;
m.opcode = opcode;
m.len = len;
iv[0].iov_base = &m;
iv[0].iov_len = sizeof(m);
iv[1].iov_base = param;
iv[1].iov_len = len;
msg.msg_iov = iv;
msg.msg_iovlen = 2;
if (fd >= 0) {
msg.msg_control = cmsgbuf;
msg.msg_controllen = sizeof(cmsgbuf);
cmsg = CMSG_FIRSTHDR(&msg);
cmsg->cmsg_level = SOL_SOCKET;
cmsg->cmsg_type = SCM_RIGHTS;
cmsg->cmsg_len = CMSG_LEN(sizeof(int));
/* Initialize the payload */
memcpy(CMSG_DATA(cmsg), &fd, sizeof(int));
}
if (sendmsg(sk, &msg, 0) < 0) {
error("IPC send failed, terminating :%s", strerror(errno));
raise(SIGTERM);
}
}
void ipc_send_rsp(uint8_t service_id, uint8_t opcode, uint8_t status)
{
struct hal_status s;
if (status == HAL_STATUS_SUCCESS) {
ipc_send(cmd_sk, service_id, opcode, 0, NULL, -1);
return;
}
s.code = status;
ipc_send(cmd_sk, service_id, HAL_OP_STATUS, sizeof(s), &s, -1);
}
void ipc_send_rsp_full(uint8_t service_id, uint8_t opcode, uint16_t len,
void *param, int fd)
{
ipc_send(cmd_sk, service_id, opcode, len, param, fd);
}
void ipc_send_notif(uint8_t service_id, uint8_t opcode, uint16_t len,
void *param)
{
if (notif_sk < 0)
return;
ipc_send(notif_sk, service_id, opcode, len, param, -1);
}
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