Move sha2.h to platform code

FreeBSD has its own sha routines that the port uses.

Reviewed-by: Jorgen Lundman <[email protected]>
Reviewed-by: Igor Kozhukhov <[email protected]>
Reviewed-by: Brian Behlendorf <[email protected]>
Signed-off-by: Matt Macy <[email protected]>
Closes #9530 

5 files changed, 153 insertions, 5 deletions

diff --git a/include/os/linux/zfs/sys/Makefile.am b/include/os/linux/zfs/sys/Makefile.am
index c4e2df0d7..ca8d83e26 100644
--- a/include/os/linux/zfs/sys/Makefile.am
+++ b/include/os/linux/zfs/sys/Makefile.am
@@ -1,5 +1,6 @@
 KERNEL_H = \
 	$(top_srcdir)/include/os/linux/zfs/sys/policy.h \
+	$(top_srcdir)/include/os/linux/zfs/sys/sha2.h \
 	$(top_srcdir)/include/os/linux/zfs/sys/trace_acl.h \
 	$(top_srcdir)/include/os/linux/zfs/sys/trace_arc.h \
 	$(top_srcdir)/include/os/linux/zfs/sys/trace_common.h \
diff --git a/include/sys/sha2.h b/include/os/linux/zfs/sys/sha2.h
index 9039835f1..4dd966b6c 100644
--- a/include/sys/sha2.h
+++ b/include/os/linux/zfs/sys/sha2.h
@@ -27,11 +27,7 @@
 #ifndef _SYS_SHA2_H
 #define	_SYS_SHA2_H
 
-#ifdef  _KERNEL
 #include <sys/types.h>		/* for uint_* */
-#else
-#include <stdint.h>
-#endif
 
 #ifdef	__cplusplus
 extern "C" {
diff --git a/include/sys/Makefile.am b/include/sys/Makefile.am
index 9aad98f24..4d0afc18c 100644
--- a/include/sys/Makefile.am
+++ b/include/sys/Makefile.am
@@ -60,7 +60,6 @@ COMMON_H = \
 	$(top_srcdir)/include/sys/rrwlock.h \
 	$(top_srcdir)/include/sys/sa.h \
 	$(top_srcdir)/include/sys/sa_impl.h \
-	$(top_srcdir)/include/sys/sha2.h \
 	$(top_srcdir)/include/sys/skein.h \
 	$(top_srcdir)/include/sys/spa_boot.h \
 	$(top_srcdir)/include/sys/spa_checkpoint.h \
diff --git a/lib/libspl/include/sys/Makefile.am b/lib/libspl/include/sys/Makefile.am
index 6855a39d1..d84ed1ec4 100644
--- a/lib/libspl/include/sys/Makefile.am
+++ b/lib/libspl/include/sys/Makefile.am
@@ -26,6 +26,7 @@ libspl_HEADERS = \
 	$(top_srcdir)/lib/libspl/include/sys/poll.h \
 	$(top_srcdir)/lib/libspl/include/sys/priv.h \
 	$(top_srcdir)/lib/libspl/include/sys/processor.h \
+	$(top_srcdir)/lib/libspl/include/sys/sha2.h \
 	$(top_srcdir)/lib/libspl/include/sys/simd.h \
 	$(top_srcdir)/lib/libspl/include/sys/stack.h \
 	$(top_srcdir)/lib/libspl/include/sys/stdtypes.h \
diff --git a/lib/libspl/include/sys/sha2.h b/lib/libspl/include/sys/sha2.h
new file mode 100644
index 000000000..e2f66d225
--- /dev/null
+++ b/lib/libspl/include/sys/sha2.h
@@ -0,0 +1,151 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+/* Copyright 2013 Saso Kiselkov.  All rights reserved. */
+
+#ifndef _SYS_SHA2_H
+#define	_SYS_SHA2_H
+
+#include <stdint.h>
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+#define	SHA2_HMAC_MIN_KEY_LEN	1	/* SHA2-HMAC min key length in bytes */
+#define	SHA2_HMAC_MAX_KEY_LEN	INT_MAX	/* SHA2-HMAC max key length in bytes */
+
+#define	SHA256_DIGEST_LENGTH	32	/* SHA256 digest length in bytes */
+#define	SHA384_DIGEST_LENGTH	48	/* SHA384 digest length in bytes */
+#define	SHA512_DIGEST_LENGTH	64	/* SHA512 digest length in bytes */
+
+/* Truncated versions of SHA-512 according to FIPS-180-4, section 5.3.6 */
+#define	SHA512_224_DIGEST_LENGTH	28	/* SHA512/224 digest length */
+#define	SHA512_256_DIGEST_LENGTH	32	/* SHA512/256 digest length */
+
+#define	SHA256_HMAC_BLOCK_SIZE	64	/* SHA256-HMAC block size */
+#define	SHA512_HMAC_BLOCK_SIZE	128	/* SHA512-HMAC block size */
+
+#define	SHA256			0
+#define	SHA256_HMAC		1
+#define	SHA256_HMAC_GEN		2
+#define	SHA384			3
+#define	SHA384_HMAC		4
+#define	SHA384_HMAC_GEN		5
+#define	SHA512			6
+#define	SHA512_HMAC		7
+#define	SHA512_HMAC_GEN		8
+#define	SHA512_224		9
+#define	SHA512_256		10
+
+/*
+ * SHA2 context.
+ * The contents of this structure are a private interface between the
+ * Init/Update/Final calls of the functions defined below.
+ * Callers must never attempt to read or write any of the fields
+ * in this structure directly.
+ */
+typedef struct 	{
+	uint32_t algotype;		/* Algorithm Type */
+
+	/* state (ABCDEFGH) */
+	union {
+		uint32_t s32[8];	/* for SHA256 */
+		uint64_t s64[8];	/* for SHA384/512 */
+	} state;
+	/* number of bits */
+	union {
+		uint32_t c32[2];	/* for SHA256 , modulo 2^64 */
+		uint64_t c64[2];	/* for SHA384/512, modulo 2^128 */
+	} count;
+	union {
+		uint8_t		buf8[128];	/* undigested input */
+		uint32_t	buf32[32];	/* realigned input */
+		uint64_t	buf64[16];	/* realigned input */
+	} buf_un;
+} SHA2_CTX;
+
+typedef SHA2_CTX SHA256_CTX;
+typedef SHA2_CTX SHA384_CTX;
+typedef SHA2_CTX SHA512_CTX;
+
+extern void SHA256Init(SHA256_CTX *);
+
+extern void SHA256Update(SHA256_CTX *, const void *, size_t);
+
+extern void SHA256Final(void *, SHA256_CTX *);
+
+extern void SHA384Init(SHA384_CTX *);
+
+extern void SHA384Update(SHA384_CTX *, const void *, size_t);
+
+extern void SHA384Final(void *, SHA384_CTX *);
+
+extern void SHA512Init(SHA512_CTX *);
+
+extern void SHA512Update(SHA512_CTX *, const void *, size_t);
+
+extern void SHA512Final(void *, SHA512_CTX *);
+
+extern void SHA2Init(uint64_t mech, SHA2_CTX *);
+
+extern void SHA2Update(SHA2_CTX *, const void *, size_t);
+
+extern void SHA2Final(void *, SHA2_CTX *);
+
+#ifdef _SHA2_IMPL
+/*
+ * The following types/functions are all private to the implementation
+ * of the SHA2 functions and must not be used by consumers of the interface
+ */
+
+/*
+ * List of support mechanisms in this module.
+ *
+ * It is important to note that in the module, division or modulus calculations
+ * are used on the enumerated type to determine which mechanism is being used;
+ * therefore, changing the order or additional mechanisms should be done
+ * carefully
+ */
+typedef enum sha2_mech_type {
+	SHA256_MECH_INFO_TYPE,		/* SUN_CKM_SHA256 */
+	SHA256_HMAC_MECH_INFO_TYPE,	/* SUN_CKM_SHA256_HMAC */
+	SHA256_HMAC_GEN_MECH_INFO_TYPE,	/* SUN_CKM_SHA256_HMAC_GENERAL */
+	SHA384_MECH_INFO_TYPE,		/* SUN_CKM_SHA384 */
+	SHA384_HMAC_MECH_INFO_TYPE,	/* SUN_CKM_SHA384_HMAC */
+	SHA384_HMAC_GEN_MECH_INFO_TYPE,	/* SUN_CKM_SHA384_HMAC_GENERAL */
+	SHA512_MECH_INFO_TYPE,		/* SUN_CKM_SHA512 */
+	SHA512_HMAC_MECH_INFO_TYPE,	/* SUN_CKM_SHA512_HMAC */
+	SHA512_HMAC_GEN_MECH_INFO_TYPE,	/* SUN_CKM_SHA512_HMAC_GENERAL */
+	SHA512_224_MECH_INFO_TYPE,	/* SUN_CKM_SHA512_224 */
+	SHA512_256_MECH_INFO_TYPE	/* SUN_CKM_SHA512_256 */
+} sha2_mech_type_t;
+
+#endif /* _SHA2_IMPL */
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif /* _SYS_SHA2_H */