crypto: api - add a helper to (un)register a array of templates

This patch add a helper to (un)register a array of templates. The following patches will use this helper to simplify the code. Signed-off-by: Xiongfeng Wang <[email protected]> Reviewed-by: Eric Biggers <[email protected]> Signed-off-by: Herbert Xu <[email protected]>
CarlFK · Jan 25, 2019 · 9572442 · 9572442
1 parent 747bd2a
commit 9572442
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Showing 2 changed files with 29 additions and 0 deletions.
diff --git a/crypto/algapi.c b/crypto/algapi.c
@@ -494,6 +494,24 @@ int crypto_register_template(struct crypto_template *tmpl)
 }
 EXPORT_SYMBOL_GPL(crypto_register_template);
 
+int crypto_register_templates(struct crypto_template *tmpls, int count)
+{
+	int i, err;
+
+	for (i = 0; i < count; i++) {
+		err = crypto_register_template(&tmpls[i]);
+		if (err)
+			goto out;
+	}
+	return 0;
+
+out:
+	for (--i; i >= 0; --i)
+		crypto_unregister_template(&tmpls[i]);
+	return err;
+}
+EXPORT_SYMBOL_GPL(crypto_register_templates);
+
 void crypto_unregister_template(struct crypto_template *tmpl)
 {
 	struct crypto_instance *inst;
@@ -523,6 +541,15 @@ void crypto_unregister_template(struct crypto_template *tmpl)
 }
 EXPORT_SYMBOL_GPL(crypto_unregister_template);
 
+void crypto_unregister_templates(struct crypto_template *tmpls, int count)
+{
+	int i;
+
+	for (i = count - 1; i >= 0; --i)
+		crypto_unregister_template(&tmpls[i]);
+}
+EXPORT_SYMBOL_GPL(crypto_unregister_templates);
+
 static struct crypto_template *__crypto_lookup_template(const char *name)
 {
 	struct crypto_template *q, *tmpl = NULL;

diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h
@@ -143,7 +143,9 @@ extern const struct crypto_type crypto_blkcipher_type;
 void crypto_mod_put(struct crypto_alg *alg);
 
 int crypto_register_template(struct crypto_template *tmpl);
+int crypto_register_templates(struct crypto_template *tmpls, int count);
 void crypto_unregister_template(struct crypto_template *tmpl);
+void crypto_unregister_templates(struct crypto_template *tmpls, int count);
 struct crypto_template *crypto_lookup_template(const char *name);
 
 int crypto_register_instance(struct crypto_template *tmpl,