From: Shaun Tancheff <shaun.tancheff@hpe.com>
Date: Thu, 22 Jul 2021 07:45:37 +0000 (-0500)
Subject: LU-14880 libcfs: Use crypto/sha2.h if available
X-Git-Tag: 2.14.54~36
X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=commitdiff_plain;h=e9cffb256d10a3bb28c957f0bf06c61793a9610b

LU-14880 libcfs: Use crypto/sha2.h if available

As of Linux commit a24d22b225ce158651378869a6b88105c4bdb887
   crypto: sha - split sha.h into sha1.h and sha2.h

sha.h is removed and sha2.h or sha3.h is preferred.

Test-Parameters: trivial
Fixes: a813e81870 ("LU-12275 sec: add llcrypt as file encryption library")
Signed-off-by: Shaun Tancheff <shaun.tancheff@hpe.com>
Change-Id: Iead5e1cb23e79a400da3cbfeb4c35c834e821d62
Reviewed-on: https://review.whamcloud.com/44373
Reviewed-by: James Simmons <jsimmons@infradead.org>
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Sebastien Buisson <sbuisson@ddn.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
---

diff --git a/libcfs/autoconf/lustre-libcfs.m4 b/libcfs/autoconf/lustre-libcfs.m4
index 3f8c687..6b0755d 100644
--- a/libcfs/autoconf/lustre-libcfs.m4
+++ b/libcfs/autoconf/lustre-libcfs.m4
@@ -1555,6 +1555,18 @@ kfree_sensitive_exists, [
 EXTRA_KCFLAGS="$tmp_flags"
 ]) # LIBCFS_HAVE_KFREE_SENSITIVE
 
+#
+# LIBCFS_HAVE_CRYPTO_SHA2_HEADER
+#
+# Kernel v5.10-rc1-114-ga24d22b225ce
+# crypto: sha - split sha.h into sha1.h and sha2.h
+#
+AC_DEFUN([LIBCFS_HAVE_CRYPTO_SHA2_HEADER], [
+LB_CHECK_LINUX_HEADER([crypto/sha2.h], [
+	AC_DEFINE(HAVE_CRYPTO_SHA2_HEADER, 1,
+		[crypto/sha2.h is present])])
+]) # LIBCFS_HAVE_CRYPTO_SHA2_HEADER
+
 AC_DEFUN([LIBCFS_PROG_LINUX_SRC], [
 	LIBCFS_SRC_HAVE_PROC_OPS
 
@@ -1688,6 +1700,7 @@ LIBCFS_VMALLOC_2ARGS
 LIBCFS_SEC_RELEASE_SECCTX
 # 5.10
 LIBCFS_HAVE_KFREE_SENSITIVE
+LIBCFS_HAVE_CRYPTO_SHA2_HEADER
 ]) # LIBCFS_PROG_LINUX
 
 #
diff --git a/libcfs/libcfs/crypto/hkdf.c b/libcfs/libcfs/crypto/hkdf.c
index 147f14b..8874bcb 100644
--- a/libcfs/libcfs/crypto/hkdf.c
+++ b/libcfs/libcfs/crypto/hkdf.c
@@ -14,8 +14,11 @@
  */
 
 #include <crypto/hash.h>
+#ifdef HAVE_CRYPTO_SHA2_HEADER
+#include <crypto/sha2.h>
+#else
 #include <crypto/sha.h>
-
+#endif
 #include "llcrypt_private.h"
 
 /*
diff --git a/libcfs/libcfs/crypto/keysetup.c b/libcfs/libcfs/crypto/keysetup.c
index 0beab0c..784eacc 100644
--- a/libcfs/libcfs/crypto/keysetup.c
+++ b/libcfs/libcfs/crypto/keysetup.c
@@ -13,7 +13,11 @@
  */
 
 #include <crypto/aes.h>
+#ifdef HAVE_CRYPTO_SHA2_HEADER
+#include <crypto/sha2.h>
+#else
 #include <crypto/sha.h>
+#endif
 #include <crypto/skcipher.h>
 #include <linux/key.h>