numam-spdk/include/spdk/conf.h
Vitaliy Mysak 800b18d028 lib/conf: allow multiple sections with same name
Add disable_sections_merge() procedure that will allow
to have multiple sections with a same name.
This behaviour is how FIO treats such sections
and so will be used in bdevperf config file.

Change-Id: If221daeb7753d91b5d2608d25ccbb16f2d43ccce
Signed-off-by: Vitaliy Mysak <vitaliy.mysak@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/3433
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Mellanox Build Bot
2020-07-22 12:24:08 +00:00

216 lines
6.6 KiB
C

/*-
* BSD LICENSE
*
* Copyright (C) 2008-2012 Daisuke Aoyama <aoyama@peach.ne.jp>.
* Copyright (c) Intel Corporation.
* 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.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 COPYRIGHT
* OWNER OR CONTRIBUTORS 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.
*/
/** \file
* Configuration file parser
*/
#ifndef SPDK_CONF_H
#define SPDK_CONF_H
#include "spdk/stdinc.h"
#ifdef __cplusplus
extern "C" {
#endif
struct spdk_conf_value;
struct spdk_conf_item;
struct spdk_conf_section;
struct spdk_conf;
/**
* Allocate a configuration struct used for the initialization of SPDK app.
*
* \return a pointer to the allocated configuration struct.
*/
struct spdk_conf *spdk_conf_allocate(void);
/**
* Free the configuration struct.
*
* \param cp Configuration struct to free.
*/
void spdk_conf_free(struct spdk_conf *cp);
/**
* Read configuration file for spdk_conf struct.
*
* \param cp Configuration struct used for the initialization of SPDK app.
* \param file File to read that is created by user to configure SPDK app.
*
* \return 0 on success, -1 on failure.
*/
int spdk_conf_read(struct spdk_conf *cp, const char *file);
/**
* Find the specified section of the configuration.
*
* \param cp Configuration struct used for the initialization of SPDK app.
* \param name Name of section to find.
*
* \return a pointer to the requested section on success or NULL otherwise.
*/
struct spdk_conf_section *spdk_conf_find_section(struct spdk_conf *cp, const char *name);
/**
* Get the first section of the configuration.
*
* \param cp Configuration struct used for the initialization of SPDK app.
*
* \return a pointer to the requested section on success or NULL otherwise.
*/
struct spdk_conf_section *spdk_conf_first_section(struct spdk_conf *cp);
/**
* Get the next section of the configuration.
*
* \param sp The current section of the configuration.
*
* \return a pointer to the requested section on success or NULL otherwise.
*/
struct spdk_conf_section *spdk_conf_next_section(struct spdk_conf_section *sp);
/**
* Match prefix of the name of section.
*
* \param sp The section of the configuration.
* \param name_prefix Prefix name to match.
*
* \return ture on success, false on failure.
*/
bool spdk_conf_section_match_prefix(const struct spdk_conf_section *sp, const char *name_prefix);
/**
* Get the name of the section.
*
* \param sp The section of the configuration.
*
* \return the name of the section.
*/
const char *spdk_conf_section_get_name(const struct spdk_conf_section *sp);
/**
* Get the number of the section.
*
* \param sp The section of the configuration.
*
* \return the number of the section.
*/
int spdk_conf_section_get_num(const struct spdk_conf_section *sp);
/**
* Get the value of the item with name 'key' in the section.
*
* If key appears multiple times, idx1 will control which version to retrieve.
* Indices will start from the top of the configuration file at 0 and increment
* by one for each new apperarance. If the configuration key contains multiple
* whitespace delimited values, idx2 controls which value is returned. The index
* begins at 0.
*
*
* \param sp The section of the configuration.
* \param key Name of item.
* \param idx1 The index into the item list for the key.
* \param idx2 The index into the value list for the item.
*
* \return the requested value on success or NULL otherwise.
*/
char *spdk_conf_section_get_nmval(struct spdk_conf_section *sp, const char *key,
int idx1, int idx2);
/**
* Get the first value of the item with name 'key' in the section.
*
* \param sp The section of the configuration.
* \param key Name of item.
* \param idx The index into the value list for the item.
*
* \return the requested value on success or NULL otherwise.
*/
char *spdk_conf_section_get_nval(struct spdk_conf_section *sp, const char *key, int idx);
/**
* Get the first value of the first item with name 'key' in the section.
*
* \param sp The section of the configuration.
* \param key Name of item.
*
* \return the requested value on success or NULL otherwise.
*/
char *spdk_conf_section_get_val(struct spdk_conf_section *sp, const char *key);
/**
* Get the first value of the first item with name 'key' in the section.
*
* \param sp The section of the configuration.
* \param key Name of item.
*
* \return the requested value on success or NULL otherwise.
*/
int spdk_conf_section_get_intval(struct spdk_conf_section *sp, const char *key);
/**
* Get the bool value of the item with name 'key' in the section.
*
* This is used to check whether the service is enabled.
*
* \param sp The section of the configuration.
* \param key Name of item.
* \param default_val Default value.
*
* \return true if matching 'Yes/Y/True', false if matching 'No/N/False', default value otherwise.
*/
bool spdk_conf_section_get_boolval(struct spdk_conf_section *sp, const char *key, bool default_val);
/**
* Set the configuration as the default.
*
* \param cp Configuration to set.
*/
void spdk_conf_set_as_default(struct spdk_conf *cp);
/**
* Disable sections merging during 'spdk_conf_read()'
*
* \param cp Configuration to be read
*/
void spdk_conf_disable_sections_merge(struct spdk_conf *cp);
#ifdef __cplusplus
}
#endif
#endif