/*
* 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 libc
* @{
*/
#include <assert.h>
#include <errno.h>
#include <io/logctl.h>
#include <ipc/logger.h>
#include <sysinfo.h>
#include <ns.h>
#include <str.h>
#include <vfs/vfs.h>
/** IPC session with the logger service. */
static async_sess_t *logger_session = NULL;
static errno_t start_logger_exchange(async_exch_t **exchange_out)
{
assert(exchange_out != NULL);
if (logger_session == NULL) {
errno_t rc;
logger_session = service_connect_blocking(SERVICE_LOGGER,
INTERFACE_LOGGER_CONTROL, 0, &rc);
if (logger_session == NULL)
return rc;
}
assert(logger_session != NULL);
async_exch_t *exchange = async_exchange_begin(logger_session);
if (exchange == NULL)
return ENOMEM;
*exchange_out = exchange;
return EOK;
}
/** Set default reported log level (global setting).
*
* This setting affects all logger clients whose reporting level was
* not yet changed.
*
* If logging level of client A is changed with logctl_set_log_level()
* to some level, this call will have no effect at that client's reporting
* level. Even if the actual value of the reporting level of client A is
* the same as current (previous) default log level.
*
* @param new_level New reported logging level.
* @return Error code of the conversion or EOK on success.
*/
errno_t logctl_set_default_level(log_level_t new_level)
{
async_exch_t *exchange = NULL;
errno_t rc = start_logger_exchange(&exchange);
if (rc != EOK)
return rc;
rc = (errno_t) async_req_1_0(exchange,
LOGGER_CONTROL_SET_DEFAULT_LEVEL, new_level);
async_exchange_end(exchange);
return rc;
}
/** Set reported log level of a single log.
*
* @see logctl_set_default_level
*
* @param logname Log name.
* @param new_level New reported logging level.
* @return Error code of the conversion or EOK on success.
*/
errno_t logctl_set_log_level(const char *logname, log_level_t new_level)
{
async_exch_t *exchange = NULL;
errno_t rc = start_logger_exchange(&exchange);
if (rc != EOK)
return rc;
aid_t reg_msg = async_send_1(exchange, LOGGER_CONTROL_SET_LOG_LEVEL,
new_level, NULL);
rc = async_data_write_start(exchange, logname, str_size(logname));
errno_t reg_msg_rc;
async_wait_for(reg_msg, ®_msg_rc);
async_exchange_end(exchange);
if (rc != EOK)
return rc;
return (errno_t) reg_msg_rc;
}
/** Set logger's VFS root.
*
* @return Error code or EOK on success.
*/
errno_t logctl_set_root(void)
{
async_exch_t *exchange = NULL;
errno_t rc = start_logger_exchange(&exchange);
if (rc != EOK)
return rc;
aid_t reg_msg = async_send_0(exchange, LOGGER_CONTROL_SET_ROOT, NULL);
async_exch_t *vfs_exch = vfs_exchange_begin();
rc = vfs_pass_handle(vfs_exch, vfs_root(), exchange);
vfs_exchange_end(vfs_exch);
errno_t reg_msg_rc;
async_wait_for(reg_msg, ®_msg_rc);
async_exchange_end(exchange);
if (rc != EOK)
return rc;
return (errno_t) reg_msg_rc;
}
/** @}
*/