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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2026-08-09 06:14:34 +02:00
Christian GöttscheandPaul Moore
7edea6e8c8
Check that an ID does not refer to a gap in the global array of definitions. Constify parameters of isvalid() function and change return type to bool. Signed-off-by: Christian Göttsche <cgzones@googlemail.com> Acked-by: Stephen Smalley <stephen.smalley.work@gmail.com> [PM: merge fixes, dropped boolean checks due to missing dependency] Signed-off-by: Paul Moore <paul@paul-moore.com>
57 lines
1.1 KiB
C
57 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Implementation of the symbol table type.
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*
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* Author : Stephen Smalley, <stephen.smalley.work@gmail.com>
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*/
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <linux/errno.h>
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#include "symtab.h"
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static unsigned int symhash(const void *key)
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{
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/*
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* djb2a
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* Public domain from cdb v0.75
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*/
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unsigned int hash = 5381;
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unsigned char c;
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while ((c = *(const unsigned char *)key++))
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hash = ((hash << 5) + hash) ^ c;
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return hash;
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}
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static int symcmp(const void *key1, const void *key2)
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{
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const char *keyp1, *keyp2;
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keyp1 = key1;
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keyp2 = key2;
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return strcmp(keyp1, keyp2);
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}
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static const struct hashtab_key_params symtab_key_params = {
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.hash = symhash,
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.cmp = symcmp,
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};
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int symtab_init(struct symtab *s, u32 size)
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{
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s->nprim = 0;
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return hashtab_init(&s->table, size);
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}
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int symtab_insert(struct symtab *s, char *name, void *datum)
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{
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return hashtab_insert(&s->table, name, datum, symtab_key_params);
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}
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void *symtab_search(const struct symtab *s, const char *name)
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{
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return hashtab_search(&s->table, name, symtab_key_params);
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}
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