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https://gitlab.nic.cz/labs/bird.git
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Merge branch 'master' into int-new
This commit is contained in:
Ondrej Zajicek (work)
commit
a1dc526760
152
conf/cf-lex.l
152
conf/cf-lex.l
@ -48,6 +48,7 @@
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#include "conf/conf.h"
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#include "conf/cf-parse.tab.h"
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#include "lib/string.h"
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#include "lib/hash.h"
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struct keyword {
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byte *name;
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@ -57,22 +58,32 @@ struct keyword {
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#include "conf/keywords.h"
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#define KW_HASH_SIZE 64
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static struct keyword *kw_hash[KW_HASH_SIZE];
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static int kw_hash_inited;
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#define SYM_HASH_SIZE 128
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static uint cf_hash(byte *c);
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#define KW_KEY(n) n->name
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#define KW_NEXT(n) n->next
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#define KW_EQ(a,b) !strcmp(a,b)
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#define KW_FN(k) cf_hash(k)
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#define KW_ORDER 8 /* Fixed */
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#define SYM_KEY(n) n->name, n->scope->active
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#define SYM_NEXT(n) n->next
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#define SYM_EQ(a,s1,b,s2) !strcmp(a,b) && s1 == s2
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#define SYM_FN(k,s) cf_hash(k)
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#define SYM_ORDER 6 /* Initial */
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#define SYM_REHASH sym_rehash
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#define SYM_PARAMS /8, *1, 2, 2, 6, 20
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HASH_DEFINE_REHASH_FN(SYM, struct symbol)
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HASH(struct keyword) kw_hash;
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struct sym_scope {
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struct sym_scope *next; /* Next on scope stack */
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struct symbol *name; /* Name of this scope */
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int active; /* Currently entered */
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};
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static struct sym_scope *conf_this_scope;
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static int cf_hash(byte *c);
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static inline struct symbol * cf_get_sym(byte *c, uint h0);
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linpool *cfg_mem;
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int (*cf_read_hook)(byte *buf, unsigned int max, int fd);
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@ -254,11 +265,9 @@ else: {
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yytext[yyleng-1] = 0;
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yytext++;
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}
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unsigned int h = cf_hash(yytext);
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struct keyword *k = kw_hash[h & (KW_HASH_SIZE-1)];
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while (k)
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{
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if (!strcmp(k->name, yytext))
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struct keyword *k = HASH_FIND(kw_hash, KW, yytext);
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if (k)
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{
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if (k->value > 0)
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return k->value;
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@ -268,9 +277,8 @@ else: {
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return ENUM;
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}
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}
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k=k->next;
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}
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cf_lval.s = cf_get_sym(yytext, h);
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cf_lval.s = cf_get_symbol(yytext);
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return SYM;
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}
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@ -333,13 +341,13 @@ else: {
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%%
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static int
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static uint
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cf_hash(byte *c)
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{
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unsigned int h = 13;
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uint h = 13 << 24;
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while (*c)
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h = (h * 37) + *c++;
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h = h + (h >> 2) + (h >> 5) + ((uint) *c++ << 24);
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return h;
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}
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@ -504,58 +512,29 @@ check_eof(void)
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}
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static struct symbol *
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cf_new_sym(byte *c, uint h0)
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cf_new_symbol(byte *c)
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{
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uint h = h0 & (SYM_HASH_SIZE-1);
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struct symbol *s, **ht;
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int l;
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struct symbol *s;
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if (!new_config->sym_hash)
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new_config->sym_hash = cfg_allocz(SYM_HASH_SIZE * sizeof(struct keyword *));
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ht = new_config->sym_hash;
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l = strlen(c);
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uint l = strlen(c);
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if (l > SYM_MAX_LEN)
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cf_error("Symbol too long");
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s = cfg_alloc(sizeof(struct symbol) + l);
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s->next = ht[h];
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ht[h] = s;
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s->scope = conf_this_scope;
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s->class = SYM_VOID;
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s->def = NULL;
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s->aux = 0;
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strcpy(s->name, c);
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if (!new_config->sym_hash.data)
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HASH_INIT(new_config->sym_hash, new_config->pool, SYM_ORDER);
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HASH_INSERT2(new_config->sym_hash, SYM, new_config->pool, s);
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return s;
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}
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static struct symbol *
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cf_find_sym(struct config *cfg, byte *c, uint h0)
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{
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uint h = h0 & (SYM_HASH_SIZE-1);
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struct symbol *s, **ht;
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if (ht = cfg->sym_hash)
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{
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for(s = ht[h]; s; s=s->next)
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if (!strcmp(s->name, c) && s->scope->active)
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return s;
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}
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if (ht = cfg->sym_fallback)
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{
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/* We know only top-level scope is active */
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for(s = ht[h]; s; s=s->next)
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if (!strcmp(s->name, c) && s->scope->active)
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return s;
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}
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return NULL;
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}
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static inline struct symbol *
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cf_get_sym(byte *c, uint h0)
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{
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return cf_find_sym(new_config, c, h0) ?: cf_new_sym(c, h0);
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}
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/**
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* cf_find_symbol - find a symbol by name
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* @cfg: specificed config
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@ -570,7 +549,18 @@ cf_get_sym(byte *c, uint h0)
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struct symbol *
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cf_find_symbol(struct config *cfg, byte *c)
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{
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return cf_find_sym(cfg, c, cf_hash(c));
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struct symbol *s;
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if (cfg->sym_hash.data &&
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(s = HASH_FIND(cfg->sym_hash, SYM, c, 1)))
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return s;
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if (cfg->fallback &&
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cfg->fallback->sym_hash.data &&
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(s = HASH_FIND(cfg->fallback->sym_hash, SYM, c, 1)))
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return s;
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return NULL;
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}
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/**
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@ -585,7 +575,7 @@ cf_find_symbol(struct config *cfg, byte *c)
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struct symbol *
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cf_get_symbol(byte *c)
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{
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return cf_get_sym(c, cf_hash(c));
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return cf_find_symbol(new_config, c) ?: cf_new_symbol(c);
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}
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struct symbol *
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@ -598,7 +588,7 @@ cf_default_name(char *template, int *counter)
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for(;;)
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{
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bsprintf(buf, template, ++(*counter));
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s = cf_get_sym(buf, cf_hash(buf));
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s = cf_get_symbol(buf);
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if (s->class == SYM_VOID)
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return s;
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if (!perc)
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@ -629,7 +619,7 @@ cf_define_symbol(struct symbol *sym, int type, void *def)
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{
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if (sym->scope == conf_this_scope)
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cf_error("Symbol already defined");
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sym = cf_new_sym(sym->name, cf_hash(sym->name));
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sym = cf_new_symbol(sym->name);
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}
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sym->class = type;
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sym->def = def;
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@ -639,15 +629,11 @@ cf_define_symbol(struct symbol *sym, int type, void *def)
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static void
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cf_lex_init_kh(void)
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{
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struct keyword *k;
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HASH_INIT(kw_hash, &root_pool, KW_ORDER);
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struct keyword *k;
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for (k=keyword_list; k->name; k++)
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{
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unsigned h = cf_hash(k->name) & (KW_HASH_SIZE-1);
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k->next = kw_hash[h];
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kw_hash[h] = k;
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}
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kw_hash_inited = 1;
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HASH_INSERT(kw_hash, KW, k);
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}
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/**
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@ -661,7 +647,7 @@ cf_lex_init_kh(void)
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void
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cf_lex_init(int is_cli, struct config *c)
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{
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if (!kw_hash_inited)
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if (!kw_hash.data)
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cf_lex_init_kh();
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ifs_head = ifs = push_ifs(NULL);
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@ -720,24 +706,6 @@ cf_pop_scope(void)
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ASSERT(conf_this_scope);
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}
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struct symbol *
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cf_walk_symbols(struct config *cf, struct symbol *sym, int *pos)
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{
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for(;;)
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{
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if (!sym)
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{
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if (*pos >= SYM_HASH_SIZE)
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return NULL;
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sym = cf->sym_hash[(*pos)++];
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}
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else
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sym = sym->next;
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if (sym && sym->scope->active)
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return sym;
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}
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}
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/**
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* cf_symbol_class_name - get name of a symbol class
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* @sym: symbol
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@ -166,7 +166,7 @@ int
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cli_parse(struct config *c)
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{
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int done = 0;
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c->sym_fallback = config->sym_hash;
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c->fallback = config;
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new_config = c;
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cfg_mem = c->mem;
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if (setjmp(conf_jmpbuf))
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@ -177,7 +177,7 @@ cli_parse(struct config *c)
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done = 1;
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cleanup:
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c->sym_fallback = NULL;
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c->fallback = NULL;
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new_config = NULL;
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cfg_mem = NULL;
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return done;
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12
conf/conf.h
12
conf/conf.h
@ -11,6 +11,7 @@
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#include "sysdep/config.h"
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#include "lib/ip.h"
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#include "lib/hash.h"
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#include "lib/resource.h"
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#include "sysdep/unix/timer.h"
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@ -52,8 +53,8 @@ struct config {
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char *err_file_name; /* File name containing error */
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char *file_name; /* Name of main configuration file */
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int file_fd; /* File descriptor of main 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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HASH(struct symbol) sym_hash; /* Lexer: symbol hash table */
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struct config *fallback; /* Link to regular config for CLI parsing */
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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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@ -114,6 +115,12 @@ struct symbol {
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char name[1];
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};
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struct sym_scope {
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struct sym_scope *next; /* Next on scope stack */
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struct symbol *name; /* Name of this scope */
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int active; /* Currently entered */
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};
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#define SYM_MAX_LEN 64
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/* Remember to update cf_symbol_class_name() */
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@ -155,7 +162,6 @@ 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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static inline int cf_symbol_is_constant(struct symbol *sym)
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14
nest/cmds.c
14
nest/cmds.c
@ -46,20 +46,22 @@ cmd_show_status(void)
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void
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cmd_show_symbols(struct sym_show_data *sd)
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{
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int pos = 0;
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struct symbol *sym = sd->sym;
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if (sym)
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cli_msg(1010, "%-8s\t%s", sym->name, cf_symbol_class_name(sym));
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if (sd->sym)
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cli_msg(1010, "%-8s\t%s", sd->sym->name, cf_symbol_class_name(sd->sym));
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else
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{
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while (sym = cf_walk_symbols(config, sym, &pos))
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HASH_WALK(config->sym_hash, next, sym)
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{
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if (!sym->scope->active)
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continue;
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if (sd->type && (sym->class != sd->type))
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continue;
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cli_msg(-1010, "%-8s\t%s", sym->name, cf_symbol_class_name(sym));
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}
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HASH_WALK_END;
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cli_msg(0, "");
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}
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}
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