[PATCH 3.2 106/152] crypto: include crypto- module prefix in template

Ben Hutchings
2015-02-17T01:46:53Z

From: Kees Cook <keescook@chromium.org>

commit 4943ba16bbc2db05115707b3ff7b4874e9e3c560 upstream.

This adds the module loading prefix "crypto-" to the template lookup
as well.

For example, attempting to load 'vfat(blowfish)' via AF_ALG now correctly
includes the "crypto-" prefix at every level, correctly rejecting "vfat":

net-pf-38
algif-hash
crypto-vfat(blowfish)
crypto-vfat(blowfish)-all
crypto-vfat

Reported-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
[bwh: Backported to 3.2: drop changes to cmac and mcryptd which we don't have]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
--- a/arch/x86/crypto/fpu.c
+++ b/arch/x86/crypto/fpu.c
@@ -17,6 +17,7 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
+#include <linux/crypto.h>
#include <asm/i387.h>

struct crypto_fpu_ctx {
@@ -159,3 +160,5 @@ void __exit crypto_fpu_exit(void)
{
crypto_unregister_template(&crypto_fpu_tmpl);
}
+
+MODULE_ALIAS_CRYPTO("fpu");
--- a/crypto/algapi.c
+++ b/crypto/algapi.c
@@ -477,8 +477,8 @@ static struct crypto_template *__crypto_

struct crypto_template *crypto_lookup_template(const char *name)
{
- return try_then_request_module(__crypto_lookup_template(name), "%s",
- name);
+ return try_then_request_module(__crypto_lookup_template(name),
+ "crypto-%s", name);
}
EXPORT_SYMBOL_GPL(crypto_lookup_template);

--- a/crypto/authenc.c
+++ b/crypto/authenc.c
@@ -710,3 +710,4 @@ module_exit(crypto_authenc_module_exit);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Simple AEAD wrapper for IPsec");
+MODULE_ALIAS_CRYPTO("authenc");
--- a/crypto/authencesn.c
+++ b/crypto/authencesn.c
@@ -833,3 +833,4 @@ module_exit(crypto_authenc_esn_module_ex
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Steffen Klassert <steffen.klassert@secunet.com>");
MODULE_DESCRIPTION("AEAD wrapper for IPsec with extended sequence numbers");
+MODULE_ALIAS_CRYPTO("authencesn");
--- a/crypto/cbc.c
+++ b/crypto/cbc.c
@@ -289,3 +289,4 @@ module_exit(crypto_cbc_module_exit);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("CBC block cipher algorithm");
+MODULE_ALIAS_CRYPTO("cbc");
--- a/crypto/ccm.c
+++ b/crypto/ccm.c
@@ -890,3 +890,4 @@ MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Counter with CBC MAC");
MODULE_ALIAS_CRYPTO("ccm_base");
MODULE_ALIAS_CRYPTO("rfc4309");
+MODULE_ALIAS_CRYPTO("ccm");
--- a/crypto/chainiv.c
+++ b/crypto/chainiv.c
@@ -360,3 +360,4 @@ module_exit(chainiv_module_exit);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Chain IV Generator");
+MODULE_ALIAS_CRYPTO("chainiv");
--- a/crypto/cryptd.c
+++ b/crypto/cryptd.c
@@ -955,3 +955,4 @@ module_exit(cryptd_exit);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Software async crypto daemon");
+MODULE_ALIAS_CRYPTO("cryptd");
--- a/crypto/ctr.c
+++ b/crypto/ctr.c
@@ -422,3 +422,4 @@ module_exit(crypto_ctr_module_exit);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("CTR Counter block mode");
MODULE_ALIAS_CRYPTO("rfc3686");
+MODULE_ALIAS_CRYPTO("ctr");
--- a/crypto/cts.c
+++ b/crypto/cts.c
@@ -351,3 +351,4 @@ module_exit(crypto_cts_module_exit);

MODULE_LICENSE("Dual BSD/GPL");
MODULE_DESCRIPTION("CTS-CBC CipherText Stealing for CBC");
+MODULE_ALIAS_CRYPTO("cts");
--- a/crypto/ecb.c
+++ b/crypto/ecb.c
@@ -185,3 +185,4 @@ module_exit(crypto_ecb_module_exit);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("ECB block cipher algorithm");
+MODULE_ALIAS_CRYPTO("ecb");
--- a/crypto/eseqiv.c
+++ b/crypto/eseqiv.c
@@ -267,3 +267,4 @@ module_exit(eseqiv_module_exit);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Encrypted Sequence Number IV Generator");
+MODULE_ALIAS_CRYPTO("eseqiv");
--- a/crypto/gcm.c
+++ b/crypto/gcm.c
@@ -1377,3 +1377,4 @@ MODULE_AUTHOR("Mikko Herranen <mh1@iki.f
MODULE_ALIAS_CRYPTO("gcm_base");
MODULE_ALIAS_CRYPTO("rfc4106");
MODULE_ALIAS_CRYPTO("rfc4543");
+MODULE_ALIAS_CRYPTO("gcm");
--- a/crypto/hmac.c
+++ b/crypto/hmac.c
@@ -271,3 +271,4 @@ module_exit(hmac_module_exit);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("HMAC hash algorithm");
+MODULE_ALIAS_CRYPTO("hmac");
--- a/crypto/lrw.c
+++ b/crypto/lrw.c
@@ -312,3 +312,4 @@ module_exit(crypto_module_exit);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("LRW block cipher mode");
+MODULE_ALIAS_CRYPTO("lrw");
--- a/crypto/pcbc.c
+++ b/crypto/pcbc.c
@@ -295,3 +295,4 @@ module_exit(crypto_pcbc_module_exit);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("PCBC block cipher algorithm");
+MODULE_ALIAS_CRYPTO("pcbc");
--- a/crypto/pcrypt.c
+++ b/crypto/pcrypt.c
@@ -565,3 +565,4 @@ module_exit(pcrypt_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Steffen Klassert <steffen.klassert@secunet.com>");
MODULE_DESCRIPTION("Parallel crypto wrapper");
+MODULE_ALIAS_CRYPTO("pcrypt");
--- a/crypto/seqiv.c
+++ b/crypto/seqiv.c
@@ -363,3 +363,4 @@ module_exit(seqiv_module_exit);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Sequence Number IV Generator");
+MODULE_ALIAS_CRYPTO("seqiv");
--- a/crypto/vmac.c
+++ b/crypto/vmac.c
@@ -673,4 +673,5 @@ module_exit(vmac_module_exit);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("VMAC hash algorithm");
+MODULE_ALIAS_CRYPTO("vmac");

--- a/crypto/xcbc.c
+++ b/crypto/xcbc.c
@@ -286,3 +286,4 @@ module_exit(crypto_xcbc_module_exit);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("XCBC keyed hash algorithm");
+MODULE_ALIAS_CRYPTO("xcbc");
--- a/crypto/xts.c
+++ b/crypto/xts.c
@@ -289,3 +289,4 @@ module_exit(crypto_module_exit);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("XTS block cipher mode");
+MODULE_ALIAS_CRYPTO("xts");