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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /security/selinux/ss/symtab.c
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!
Diffstat (limited to 'security/selinux/ss/symtab.c')
-rw-r--r--security/selinux/ss/symtab.c44
1 files changed, 44 insertions, 0 deletions
diff --git a/security/selinux/ss/symtab.c b/security/selinux/ss/symtab.c
new file mode 100644
index 00000000000..24a10d36d3b
--- /dev/null
+++ b/security/selinux/ss/symtab.c
@@ -0,0 +1,44 @@
1/*
2 * Implementation of the symbol table type.
3 *
4 * Author : Stephen Smalley, <sds@epoch.ncsc.mil>
5 */
6#include <linux/kernel.h>
7#include <linux/slab.h>
8#include <linux/string.h>
9#include <linux/errno.h>
10#include "symtab.h"
11
12static unsigned int symhash(struct hashtab *h, void *key)
13{
14 char *p, *keyp;
15 unsigned int size;
16 unsigned int val;
17
18 val = 0;
19 keyp = key;
20 size = strlen(keyp);
21 for (p = keyp; (p - keyp) < size; p++)
22 val = (val << 4 | (val >> (8*sizeof(unsigned int)-4))) ^ (*p);
23 return val & (h->size - 1);
24}
25
26static int symcmp(struct hashtab *h, void *key1, void *key2)
27{
28 char *keyp1, *keyp2;
29
30 keyp1 = key1;
31 keyp2 = key2;
32 return strcmp(keyp1, keyp2);
33}
34
35
36int symtab_init(struct symtab *s, unsigned int size)
37{
38 s->table = hashtab_create(symhash, symcmp, size);
39 if (!s->table)
40 return -1;
41 s->nprim = 0;
42 return 0;
43}
44