mirror of
git://sourceware.org/git/lvm2.git
synced 2024-10-28 20:25:52 +03:00
760d1fac55
To have better control were the config tree could be modified use more const pointers and very carefully downcast them back to non-const (for config tree merge).
124 lines
3.8 KiB
C
124 lines
3.8 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"
|
|
|
|
struct device;
|
|
struct cmd_context;
|
|
|
|
enum {
|
|
CFG_STRING,
|
|
CFG_FLOAT,
|
|
CFG_INT,
|
|
CFG_EMPTY_ARRAY
|
|
};
|
|
|
|
struct config_value {
|
|
int type;
|
|
union {
|
|
int64_t i;
|
|
float r;
|
|
const char *str;
|
|
} v;
|
|
struct config_value *next; /* for arrays */
|
|
};
|
|
|
|
struct config_node {
|
|
const char *key;
|
|
struct config_node *parent, *sib, *child;
|
|
struct config_value *v;
|
|
};
|
|
|
|
struct config_tree {
|
|
struct config_node *root;
|
|
};
|
|
|
|
struct config_tree_list {
|
|
struct dm_list list;
|
|
struct config_tree *cft;
|
|
};
|
|
|
|
struct config_tree *create_config_tree(const char *filename, int keep_open);
|
|
struct config_tree *create_config_tree_from_string(struct cmd_context *cmd,
|
|
const char *config_settings);
|
|
int override_config_tree_from_string(struct cmd_context *cmd,
|
|
const char *config_settings);
|
|
void destroy_config_tree(struct config_tree *cft);
|
|
|
|
typedef uint32_t (*checksum_fn_t) (uint32_t initial, const uint8_t *buf, uint32_t size);
|
|
|
|
int read_config_fd(struct 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 read_config_file(struct config_tree *cft);
|
|
int write_config_file(struct config_tree *cft, const char *file,
|
|
int argc, char **argv);
|
|
|
|
typedef int (*putline_fn)(const char *line, void *baton);
|
|
int write_config_node(const struct config_node *cn, putline_fn putline, void *baton);
|
|
|
|
time_t config_file_timestamp(struct config_tree *cft);
|
|
int config_file_changed(struct config_tree *cft);
|
|
int merge_config_tree(struct cmd_context *cmd, struct config_tree *cft,
|
|
struct config_tree *newdata);
|
|
|
|
const struct config_node *find_config_node(const struct config_node *cn,
|
|
const char *path);
|
|
const char *find_config_str(const struct config_node *cn, const char *path,
|
|
const char *fail);
|
|
int find_config_int(const struct config_node *cn, const char *path, int fail);
|
|
float find_config_float(const struct config_node *cn, const char *path,
|
|
float fail);
|
|
|
|
/*
|
|
* These versions check an override tree, if present, first.
|
|
*/
|
|
const struct config_node *find_config_tree_node(struct cmd_context *cmd,
|
|
const char *path);
|
|
const char *find_config_tree_str(struct cmd_context *cmd,
|
|
const char *path, const char *fail);
|
|
int find_config_tree_int(struct cmd_context *cmd, const char *path,
|
|
int fail);
|
|
float find_config_tree_float(struct cmd_context *cmd, const char *path,
|
|
float fail);
|
|
|
|
/*
|
|
* Understands (0, ~0), (y, n), (yes, no), (on,
|
|
* off), (true, false).
|
|
*/
|
|
int find_config_bool(const struct config_node *cn, const char *path, int fail);
|
|
int find_config_tree_bool(struct cmd_context *cmd, const char *path, int fail);
|
|
|
|
int get_config_uint32(const struct config_node *cn, const char *path,
|
|
uint32_t *result);
|
|
|
|
int get_config_uint64(const struct config_node *cn, const char *path,
|
|
uint64_t *result);
|
|
|
|
int get_config_str(const struct config_node *cn, const char *path,
|
|
const char **result);
|
|
|
|
unsigned maybe_config_section(const char *str, unsigned len);
|
|
|
|
const char *config_parent_name(const struct config_node *n);
|
|
|
|
struct config_node *clone_config_node(struct dm_pool *mem, const struct config_node *cn,
|
|
int siblings);
|
|
#endif
|