|
/* Author : Stephen Smalley, <sds@tycho.nsa.gov> */
|
|
/* FLASK */
|
|
/*
|
* Implementation of the symbol table type.
|
*/
|
|
#include <string.h>
|
#include <sepol/policydb/hashtab.h>
|
#include <sepol/policydb/symtab.h>
|
|
static unsigned int symhash(hashtab_t h, const_hashtab_key_t key)
|
{
|
const char *p, *keyp;
|
size_t size;
|
unsigned int val;
|
|
val = 0;
|
keyp = (const char *)key;
|
size = strlen(keyp);
|
for (p = keyp; ((size_t) (p - keyp)) < size; p++)
|
val =
|
(val << 4 | (val >> (8 * sizeof(unsigned int) - 4))) ^ (*p);
|
return val & (h->size - 1);
|
}
|
|
static int symcmp(hashtab_t h
|
__attribute__ ((unused)), const_hashtab_key_t key1,
|
const_hashtab_key_t key2)
|
{
|
return strcmp(key1, key2);
|
}
|
|
int symtab_init(symtab_t * s, unsigned int size)
|
{
|
s->table = hashtab_create(symhash, symcmp, size);
|
if (!s->table)
|
return -1;
|
s->nprim = 0;
|
return 0;
|
}
|
|
void symtab_destroy(symtab_t * s)
|
{
|
if (!s)
|
return;
|
if (s->table)
|
hashtab_destroy(s->table);
|
return;
|
}
|
/* FLASK */
|
