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/*

 * Implementation of the symbol table type.

 *

 * Author : Stephen Smalley, <sds@epoch.ncsc.mil>

 */

#include <linux/kernel.h>

#include <linux/slab.h>

#include <linux/string.h>

#include <linux/errno.h>

#include "symtab.h"

static unsigned int symhash(struct hashtab *h, const void *key)

{

        const char *p, *keyp;

        unsigned int size;

        unsigned int val;

        val = 0;

        keyp = key;

        size = strlen(keyp);

        for (p = keyp; (p - keyp) < size; p++)

                val = (val << 4 | (val >> (8*sizeof(unsigned int)-4))) ^ (*p);

        return val & (h->size - 1);

}

static int symcmp(struct hashtab *h, const void *key1, const void *key2)

{

        const char *keyp1, *keyp2;

        keyp1 = key1;

        keyp2 = key2;

        return strcmp(keyp1, keyp2);

}

int symtab_init(struct symtab *s, unsigned int size)

{

        s->table = hashtab_create(symhash, symcmp, size);

        if (!s->table)

                return -1;

        s->nprim = 0;

        return 0;

}