mirror of
git://sourceware.org/git/lvm2.git
synced 2024-10-28 20:25:52 +03:00
386886f71c
For example, the old call and reference: find_config_tree_str(cmd, "devices/dir", DEFAULT_DEV_DIR) ...now becomes: find_config_tree_str(cmd, devices_dir_CFG) So we're referring to the named configuration ID instead of passing the configuration path and the default value is taken from central config definition in config_settings.h automatically.
125 lines
4.5 KiB
C
125 lines
4.5 KiB
C
/*
|
|
* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
|
|
* Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
|
|
*
|
|
* This file is part of LVM2.
|
|
*
|
|
* This copyrighted material is made available to anyone wishing to use,
|
|
* modify, copy, or redistribute it subject to the terms and conditions
|
|
* of the GNU Lesser General Public License v.2.1.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public License
|
|
* along with this program; if not, write to the Free Software Foundation,
|
|
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#ifndef _LVM_CONFIG_H
|
|
#define _LVM_CONFIG_H
|
|
|
|
#include "lvm-types.h"
|
|
#include "defaults.h"
|
|
|
|
/* 16 bits: 3 bits for major, 4 bits for minor, 9 bits for patchlevel */
|
|
/* Max LVM version supported: 7.15.511. Just extend bits if ever needed. */
|
|
#define vsn(major, minor, patchlevel) (major << 13 | minor << 9 | patchlevel)
|
|
|
|
struct device;
|
|
struct cmd_context;
|
|
|
|
#define CFG_PATH_MAX_LEN 64
|
|
|
|
/*
|
|
* Structures used for definition of a configuration tree.
|
|
*/
|
|
|
|
/* configuration definition item type (for item's accepted types) */
|
|
typedef enum {
|
|
CFG_TYPE_SECTION = 0, /* section */
|
|
CFG_TYPE_ARRAY = 1, /* setting */
|
|
CFG_TYPE_BOOL = 2, /* setting */
|
|
CFG_TYPE_INT = 4, /* setting */
|
|
CFG_TYPE_FLOAT = 8, /* setting */
|
|
CFG_TYPE_STRING = 16 /* setting */
|
|
} cfg_def_type_t;
|
|
|
|
/* configuration definition item value (for item's default value) */
|
|
typedef union {
|
|
const int v_CFG_TYPE_BOOL, v_CFG_TYPE_INT;
|
|
const float v_CFG_TYPE_FLOAT;
|
|
const char *v_CFG_TYPE_STRING, *v_CFG_TYPE_ARRAY;
|
|
} cfg_def_value_t;
|
|
|
|
/* configuration definition item flags: */
|
|
|
|
/* whether the configuration item name is variable */
|
|
#define CFG_NAME_VARIABLE 0x01
|
|
/* whether empty value is allowed */
|
|
#define CFG_ALLOW_EMPTY 0x02
|
|
/* whether the configuration item is for advanced use only */
|
|
#define CFG_ADVANCED 0x04
|
|
/* whether the configuraton item is not officially supported */
|
|
#define CFG_UNSUPPORTED 0x08
|
|
|
|
/* configuration definition item structure */
|
|
typedef struct cfg_def_item {
|
|
int id; /* ID of this item */
|
|
int parent; /* ID of parent item */
|
|
const char *name; /* name of the item in configuration tree */
|
|
cfg_def_type_t type; /* configuration item type */
|
|
cfg_def_value_t default_value; /* default value (only for settings) */
|
|
uint16_t flags; /* configuration item definition flags */
|
|
uint16_t since_version; /* version this item appeared in */
|
|
const char *comment; /* brief comment */
|
|
} cfg_def_item_t;
|
|
|
|
/*
|
|
* Register ID for each possible item in the configuration tree.
|
|
*/
|
|
enum {
|
|
#define cfg_section(id, name, parent, flags, since_version, comment) id,
|
|
#define cfg(id, name, parent, flags, type, default_value, since_version, comment) id,
|
|
#define cfg_array(id, name, parent, flags, types, default_value, since_version, comment) id,
|
|
#include "config_settings.h"
|
|
#undef cfg_section
|
|
#undef cfg
|
|
#undef cfg_array
|
|
};
|
|
|
|
int config_def_get_path(char *buf, size_t buf_size, int id);
|
|
|
|
int override_config_tree_from_string(struct cmd_context *cmd,
|
|
const char *config_settings);
|
|
struct dm_config_tree *remove_overridden_config_tree(struct cmd_context *cmd);
|
|
|
|
typedef uint32_t (*checksum_fn_t) (uint32_t initial, const uint8_t *buf, uint32_t size);
|
|
|
|
struct dm_config_tree *config_file_open(const char *filename, int keep_open);
|
|
int config_file_read_fd(struct dm_config_tree *cft, struct device *dev,
|
|
off_t offset, size_t size, off_t offset2, size_t size2,
|
|
checksum_fn_t checksum_fn, uint32_t checksum);
|
|
int config_file_read(struct dm_config_tree *cft);
|
|
int config_write(struct dm_config_tree *cft, const char *file,
|
|
int argc, char **argv);
|
|
void config_file_destroy(struct dm_config_tree *cft);
|
|
|
|
time_t config_file_timestamp(struct dm_config_tree *cft);
|
|
int config_file_changed(struct dm_config_tree *cft);
|
|
int config_file_check(struct dm_config_tree *cft, const char **filename, struct stat *info);
|
|
|
|
|
|
int merge_config_tree(struct cmd_context *cmd, struct dm_config_tree *cft,
|
|
struct dm_config_tree *newdata);
|
|
|
|
/*
|
|
* These versions check an override tree, if present, first.
|
|
*/
|
|
const struct dm_config_node *find_config_tree_node(struct cmd_context *cmd, int id);
|
|
const char *find_config_tree_str(struct cmd_context *cmd, int id);
|
|
const char *find_config_tree_str_allow_empty(struct cmd_context *cmd, int id);
|
|
int find_config_tree_int(struct cmd_context *cmd, int id);
|
|
int64_t find_config_tree_int64(struct cmd_context *cmd, int id);
|
|
float find_config_tree_float(struct cmd_context *cmd, int id);
|
|
int find_config_tree_bool(struct cmd_context *cmd, int id);
|
|
|
|
#endif
|