45 lines
839 B
C
45 lines
839 B
C
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/*
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* Implementation of the symbol table type.
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*
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* Author : Stephen Smalley, <sds@epoch.ncsc.mil>
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*/
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <linux/errno.h>
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#include "symtab.h"
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static unsigned int symhash(struct hashtab *h, void *key)
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{
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char *p, *keyp;
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unsigned int size;
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unsigned int val;
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val = 0;
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keyp = key;
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size = strlen(keyp);
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for (p = keyp; (p - keyp) < size; p++)
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val = (val << 4 | (val >> (8*sizeof(unsigned int)-4))) ^ (*p);
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return val & (h->size - 1);
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}
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static int symcmp(struct hashtab *h, void *key1, void *key2)
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{
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char *keyp1, *keyp2;
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keyp1 = key1;
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keyp2 = key2;
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return strcmp(keyp1, keyp2);
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}
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int symtab_init(struct symtab *s, unsigned int size)
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{
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s->table = hashtab_create(symhash, symcmp, size);
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if (!s->table)
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return -1;
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s->nprim = 0;
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return 0;
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}
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