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- /*
- * libuci - Library for the Unified Configuration Interface
- * Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
- *
- * this program is free software; you can redistribute it and/or modify
- * it under the terms of the gnu lesser general public license version 2.1
- * as published by the free software foundation
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
- #ifndef __LIBUCI_H
- #define __LIBUCI_H
- #include <setjmp.h>
- #include <stdio.h>
- #define UCI_CONFDIR "/etc/config"
- enum
- {
- UCI_OK = 0,
- UCI_ERR_MEM,
- UCI_ERR_INVAL,
- UCI_ERR_NOTFOUND,
- UCI_ERR_IO,
- UCI_ERR_PARSE,
- UCI_ERR_UNKNOWN,
- UCI_ERR_LAST
- };
- struct uci_list
- {
- void *next;
- void *prev;
- };
- struct uci_config;
- struct uci_section;
- struct uci_option;
- struct uci_parse_context;
- /**
- * uci_alloc: Allocate a new uci context
- */
- extern struct uci_context *uci_alloc(void);
- /**
- * uci_perror: Print the last uci error that occured
- * @ctx: uci context
- * @str: string to print before the error message
- */
- extern void uci_perror(struct uci_context *ctx, const char *str);
- /**
- * uci_load: Parse an uci config file and store it in the uci context
- *
- * @ctx: uci context
- * @name: name of the config file (relative to the config directory)
- */
- int uci_load(struct uci_context *ctx, const char *name);
- /**
- * uci_cleanup: Clean up after an error
- *
- * @ctx: uci context
- */
- int uci_cleanup(struct uci_context *ctx);
- /* UCI data structures */
- struct uci_context
- {
- struct uci_list root;
- /* for error handling only */
- struct uci_parse_context *pctx;
- /* private: */
- int errno;
- jmp_buf trap;
- jmp_buf trap_saved;
- int saved;
- };
- struct uci_parse_context
- {
- int line;
- int byte;
- /* private: */
- struct uci_config *cfg;
- FILE *file;
- char *buf;
- int bufsz;
- };
- struct uci_config
- {
- struct uci_list list;
- struct uci_list sections;
- struct uci_context *ctx;
- char *name;
- };
- struct uci_section
- {
- struct uci_list list;
- struct uci_list options;
- struct uci_config *config;
- char *type;
- char *name;
- };
- struct uci_option
- {
- struct uci_list list;
- struct uci_section *section;
- char *name;
- char *value;
- };
- /* linked list handling */
- #ifndef offsetof
- #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
- #endif
- #define uci_list_empty(list) (list->next == ptr)
- #define uci_list_entry(_type, _ptr) \
- ((struct uci_ ## _type *) ((char *)(_ptr) - offsetof(struct uci_ ## _type,list)))
- #define uci_foreach_entry(_type, _list, _ptr) \
- for(_ptr = uci_list_entry(_type, (_list)->next); \
- &_ptr->list != (_list); \
- _ptr = uci_list_entry(_type, _ptr->list.next))
- #endif
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