From 76fc60a2e3c6aa6e98cd3a5cb81a1855c637b274 Mon Sep 17 00:00:00 2001
From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Sat, 23 Feb 2008 11:12:06 +0800
Subject: [PATCH] [CRYPTO] skcipher: Move chainiv/seqiv into crypto_blkcipher
 module

For compatibility with dm-crypt initramfs setups it is useful to merge
chainiv/seqiv into the crypto_blkcipher module.  Since they're required
by most algorithms anyway this is an acceptable trade-off.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
 crypto/Makefile                    |  4 ++--
 crypto/ablkcipher.c                |  3 ---
 crypto/blkcipher.c                 | 29 +++++++++++++++++++++++++++++
 crypto/chainiv.c                   | 12 ++++--------
 crypto/eseqiv.c                    | 12 ++++--------
 include/crypto/internal/skcipher.h |  6 ++++++
 6 files changed, 45 insertions(+), 21 deletions(-)

diff --git a/crypto/Makefile b/crypto/Makefile
index 48c7583799..7cf36253a7 100644
--- a/crypto/Makefile
+++ b/crypto/Makefile
@@ -12,9 +12,9 @@ obj-$(CONFIG_CRYPTO_AEAD) += aead.o
 
 crypto_blkcipher-objs := ablkcipher.o
 crypto_blkcipher-objs += blkcipher.o
+crypto_blkcipher-objs += chainiv.o
+crypto_blkcipher-objs += eseqiv.o
 obj-$(CONFIG_CRYPTO_BLKCIPHER) += crypto_blkcipher.o
-obj-$(CONFIG_CRYPTO_BLKCIPHER) += chainiv.o
-obj-$(CONFIG_CRYPTO_BLKCIPHER) += eseqiv.o
 obj-$(CONFIG_CRYPTO_SEQIV) += seqiv.o
 
 crypto_hash-objs := hash.o
diff --git a/crypto/ablkcipher.c b/crypto/ablkcipher.c
index 3bcb099b4a..94140b3756 100644
--- a/crypto/ablkcipher.c
+++ b/crypto/ablkcipher.c
@@ -341,6 +341,3 @@ err:
 	return ERR_PTR(err);
 }
 EXPORT_SYMBOL_GPL(crypto_alloc_ablkcipher);
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("Asynchronous block chaining cipher type");
diff --git a/crypto/blkcipher.c b/crypto/blkcipher.c
index 4a7e65c4df..185f955fb0 100644
--- a/crypto/blkcipher.c
+++ b/crypto/blkcipher.c
@@ -696,5 +696,34 @@ void skcipher_geniv_exit(struct crypto_tfm *tfm)
 }
 EXPORT_SYMBOL_GPL(skcipher_geniv_exit);
 
+static int __init blkcipher_module_init(void)
+{
+	int err;
+
+	err = chainiv_module_init();
+	if (err)
+		goto out;
+
+	err = eseqiv_module_init();
+	if (err)
+		goto eseqiv_err;
+
+out:
+	return err;
+
+eseqiv_err:
+	chainiv_module_exit();
+	goto out;
+}
+
+static void __exit blkcipher_module_exit(void)
+{
+	eseqiv_module_exit();
+	chainiv_module_exit();
+}
+
+module_init(blkcipher_module_init);
+module_exit(blkcipher_module_exit);
+
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("Generic block chaining cipher type");
diff --git a/crypto/chainiv.c b/crypto/chainiv.c
index d17fa0454d..0a7cac6e90 100644
--- a/crypto/chainiv.c
+++ b/crypto/chainiv.c
@@ -314,18 +314,14 @@ static struct crypto_template chainiv_tmpl = {
 	.module = THIS_MODULE,
 };
 
-static int __init chainiv_module_init(void)
+int __init chainiv_module_init(void)
 {
 	return crypto_register_template(&chainiv_tmpl);
 }
+EXPORT_SYMBOL_GPL(chainiv_module_init);
 
-static void __exit chainiv_module_exit(void)
+void __exit chainiv_module_exit(void)
 {
 	crypto_unregister_template(&chainiv_tmpl);
 }
-
-module_init(chainiv_module_init);
-module_exit(chainiv_module_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("Chain IV Generator");
+EXPORT_SYMBOL_GPL(chainiv_module_exit);
diff --git a/crypto/eseqiv.c b/crypto/eseqiv.c
index eb90d27ae1..6f2cd063b6 100644
--- a/crypto/eseqiv.c
+++ b/crypto/eseqiv.c
@@ -247,18 +247,14 @@ static struct crypto_template eseqiv_tmpl = {
 	.module = THIS_MODULE,
 };
 
-static int __init eseqiv_module_init(void)
+int __init eseqiv_module_init(void)
 {
 	return crypto_register_template(&eseqiv_tmpl);
 }
+EXPORT_SYMBOL_GPL(eseqiv_module_init);
 
-static void __exit eseqiv_module_exit(void)
+void __exit eseqiv_module_exit(void)
 {
 	crypto_unregister_template(&eseqiv_tmpl);
 }
-
-module_init(eseqiv_module_init);
-module_exit(eseqiv_module_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("Encrypted Sequence Number IV Generator");
+EXPORT_SYMBOL_GPL(eseqiv_module_exit);
diff --git a/include/crypto/internal/skcipher.h b/include/crypto/internal/skcipher.h
index 2ba42cd7d6..a8f12644a1 100644
--- a/include/crypto/internal/skcipher.h
+++ b/include/crypto/internal/skcipher.h
@@ -15,6 +15,7 @@
 
 #include <crypto/algapi.h>
 #include <crypto/skcipher.h>
+#include <linux/init.h>
 #include <linux/types.h>
 
 struct rtattr;
@@ -64,6 +65,11 @@ void skcipher_geniv_free(struct crypto_instance *inst);
 int skcipher_geniv_init(struct crypto_tfm *tfm);
 void skcipher_geniv_exit(struct crypto_tfm *tfm);
 
+int __init eseqiv_module_init(void);
+void __exit eseqiv_module_exit(void);
+int __init chainiv_module_init(void);
+void __exit chainiv_module_exit(void);
+
 static inline struct crypto_ablkcipher *skcipher_geniv_cipher(
 	struct crypto_ablkcipher *geniv)
 {
-- 
2.39.5