/*
* Copyright (c) 2001-2020 Mellanox Technologies, Ltd. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - 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.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <sys/socket.h>
#include <sys/un.h>
#include "hash.h"
#include "tc.h"
#include "daemon.h"
extern int open_store(void);
extern void close_store(void);
extern int open_flow(void);
extern void close_flow(void);
extern int open_message(void);
extern void close_message(void);
extern int proc_message(void);
extern int open_notify(void);
extern void close_notify(void);
extern int proc_notify(void);
int proc_loop(void)
{
int rc = 0;
log_debug("setting working directory ...\n");
if ((mkdir(daemon_cfg.notify_dir, 0777) != 0) && (errno != EEXIST)) {
rc = -errno;
log_error("failed create folder %s (errno = %d)\n",
daemon_cfg.notify_dir, errno);
goto err;
}
log_debug("setting store ...\n");
rc = open_store();
if (rc < 0) {
goto err;
}
log_debug("setting flow ...\n");
rc = open_flow();
if (rc < 0) {
goto err;
}
log_debug("setting notification ...\n");
rc = open_notify();
if (rc < 0) {
goto err;
}
log_debug("setting message processing ...\n");
rc = open_message();
if (rc < 0) {
goto err;
}
log_debug("starting loop ...\n");
while ((0 == daemon_cfg.sig) && (errno != EINTR)) {
fd_set readfds;
struct timeval tv;
int max_fd = -1;
FD_ZERO(&readfds);
FD_SET(daemon_cfg.sock_fd, &readfds);
max_fd = daemon_cfg.sock_fd;
FD_SET(daemon_cfg.notify_fd, &readfds);
max_fd = (max_fd < daemon_cfg.notify_fd ? daemon_cfg.notify_fd : max_fd);
/* Use timeout for select() call */
tv.tv_sec = 60;
tv.tv_usec = 0;
rc = select(max_fd + 1, &readfds, NULL, NULL, &tv);
if (rc < 0) {
rc = 0;
if (errno != EINTR) {
rc = -errno;
log_error("Failed select() errno %d (%s)\n", errno,
strerror(errno));
}
goto err;
} else if (rc == 0) {
continue;
}
/* Check messages from processes */
if (FD_ISSET(daemon_cfg.sock_fd, &readfds)) {
log_debug("message processing ...\n");
rc = proc_message();
}
/* Check any events from file system monitor */
if (FD_ISSET(daemon_cfg.notify_fd, &readfds)) {
log_debug("notification processing ...\n");
rc = proc_notify();
}
}
err:
log_debug("finishing loop ...\n");
close_message();
close_notify();
close_flow();
close_store();
return rc;
}