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04dc62a011
Pavel's fault that he's never tested shadowing of declarations in the filters. cf_define_symbol() has been modified to check the scope of the symbol it's given and it if it's an already defined symbol, but in a different scope, a copy is created in the current scope and redefined to the new meaning, the consequence being that it cf_define_symbol() now returns the new symbol you need to use when assigning aux and aux2.
118 lines
3.5 KiB
C
118 lines
3.5 KiB
C
/*
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* BIRD Internet Routing Daemon -- Configuration File Handling
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*
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* (c) 1998--2000 Martin Mares <mj@ucw.cz>
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*
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* Can be freely distributed and used under the terms of the GNU GPL.
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*/
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#ifndef _BIRD_CONF_H_
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#define _BIRD_CONF_H_
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#include "lib/resource.h"
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#include "lib/timer.h"
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/* Configuration structure */
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struct config {
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pool *pool; /* Pool the configuration is stored in */
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linpool *mem; /* Linear pool containing configuration data */
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list protos; /* Configured protocol instances (struct proto_config) */
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list tables; /* Configured routing tables (struct rtable_config) */
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list logfiles; /* Configured log fils (sysdep) */
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struct rtable_config *master_rtc; /* Configuration of master routing table */
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u32 router_id; /* Our Router ID */
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unsigned int proto_default_debug; /* Default protocol debug mask */
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int cli_debug; /* Tracing of CLI connections and commands */
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char *err_msg; /* Parser error message */
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int err_lino; /* Line containing error */
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char *file_name; /* Name of configuration file */
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struct symbol **sym_hash; /* Lexer: symbol hash table */
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struct symbol **sym_fallback; /* Lexer: fallback symbol hash table */
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int obstacle_count; /* Number of items blocking freeing of this config */
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int shutdown; /* This is a pseudo-config for daemon shutdown */
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bird_clock_t load_time; /* When we've got this configuration */
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};
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/* Please don't use these variables in protocols. Use proto_config->global instead. */
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extern struct config *config; /* Currently active configuration */
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extern struct config *new_config; /* Configuration being parsed */
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extern struct config *old_config; /* Old configuration when reconfiguration is in progress */
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extern struct config *future_config; /* New config held here if recon requested during recon */
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extern int shutting_down;
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extern bird_clock_t boot_time;
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struct config *config_alloc(byte *name);
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int config_parse(struct config *);
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int cli_parse(struct config *);
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void config_free(struct config *);
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int config_commit(struct config *);
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void cf_error(char *msg, ...) NORET;
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void config_add_obstacle(struct config *);
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void config_del_obstacle(struct config *);
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void order_shutdown(void);
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#define CONF_DONE 0
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#define CONF_PROGRESS 1
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#define CONF_QUEUED 2
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#define CONF_SHUTDOWN 3
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/* Pools */
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extern linpool *cfg_mem;
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#define cfg_alloc(size) lp_alloc(cfg_mem, size)
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#define cfg_allocu(size) lp_allocu(cfg_mem, size)
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#define cfg_allocz(size) lp_allocz(cfg_mem, size)
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char *cfg_strdup(char *c);
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/* Lexer */
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extern int (*cf_read_hook)(byte *buf, unsigned int max);
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struct symbol {
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struct symbol *next;
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struct sym_scope *scope;
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int class;
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int aux;
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void *aux2;
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void *def;
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char name[1];
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};
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/* Remember to update cf_symbol_class_name() */
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#define SYM_VOID 0
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#define SYM_PROTO 1
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#define SYM_NUMBER 2
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#define SYM_FUNCTION 3
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#define SYM_FILTER 4
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#define SYM_TABLE 5
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#define SYM_IPA 6
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#define SYM_VARIABLE 0x100 /* 0x100-0x1ff are variable types */
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extern int conf_lino;
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int cf_lex(void);
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void cf_lex_init(int is_cli);
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struct symbol *cf_find_symbol(byte *c);
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struct symbol *cf_default_name(char *template, int *counter);
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struct symbol *cf_define_symbol(struct symbol *symbol, int type, void *def);
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void cf_push_scope(struct symbol *);
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void cf_pop_scope(void);
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struct symbol *cf_walk_symbols(struct config *cf, struct symbol *sym, int *pos);
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char *cf_symbol_class_name(struct symbol *sym);
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/* Parser */
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int cf_parse(void);
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/* Sysdep hooks */
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void sysdep_preconfig(struct config *);
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int sysdep_commit(struct config *, struct config *);
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void sysdep_shutdown_done(void);
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#endif
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