You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
44 lines
839 B
44 lines
839 B
/*
|
|
* 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, void *key)
|
|
{
|
|
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, void *key1, void *key2)
|
|
{
|
|
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;
|
|
}
|
|
|
|
|