HelenOS sources

root/uspace/srv/logger/ctl.c

DEFINITIONS

1. handle_log_level_change
2. logger_connection_handler_control

/*
 * Copyright (c) 2012 Vojtech Horky
 * All rights reserved.
 *
 * 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 name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
 */

/**
 * @addtogroup logger
 * @{
 */

/** @file
 */

#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <io/logctl.h>
#include <ipc/logger.h>
#include <vfs/vfs.h>
#include "logger.h"

static errno_t handle_log_level_change(sysarg_t new_level)
{
        void *full_name;
        errno_t rc = async_data_write_accept(&full_name, true, 0, 0, 0, NULL);
        if (rc != EOK) {
                return rc;
        }

        logger_log_t *log = find_log_by_name_and_lock(full_name);
        free(full_name);
        if (log == NULL)
                return ENOENT;

        log->logged_level = new_level;

        log_unlock(log);

        return EOK;
}

void logger_connection_handler_control(ipc_call_t *icall)
{
        errno_t rc;
        int fd;

        async_accept_0(icall);
        logger_log("control: new client.\n");

        while (true) {
                ipc_call_t call;
                async_get_call(&call);

                if (!ipc_get_imethod(&call)) {
                        async_answer_0(&call, EOK);
                        break;
                }

                switch (ipc_get_imethod(&call)) {
                case LOGGER_CONTROL_SET_DEFAULT_LEVEL:
                        rc = set_default_logging_level(ipc_get_arg1(&call));
                        async_answer_0(&call, rc);
                        break;
                case LOGGER_CONTROL_SET_LOG_LEVEL:
                        rc = handle_log_level_change(ipc_get_arg1(&call));
                        async_answer_0(&call, rc);
                        break;
                case LOGGER_CONTROL_SET_ROOT:
                        rc = vfs_receive_handle(true, &fd);
                        if (rc == EOK) {
                                rc = vfs_root_set(fd);
                                vfs_put(fd);
                        }
                        async_answer_0(&call, rc);
                        break;
                default:
                        async_answer_0(&call, EINVAL);
                        break;
                }
        }

        logger_log("control: client terminated.\n");
}

/**
 * @}
 */