android_kernel_motorola_sm6225/security/selinux/ss/symtab.c
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00

44 lines
839 B
C

/*
* 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;
}