zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/app/busybox/src/util-linux/volume_id/luks.c b/ap/app/busybox/src/util-linux/volume_id/luks.c
new file mode 100644
index 0000000..f9b3766
--- /dev/null
+++ b/ap/app/busybox/src/util-linux/volume_id/luks.c
@@ -0,0 +1,100 @@
+/*
+ * volume_id - reads filesystem label and uuid
+ *
+ * Copyright (C) 2005 W. Michael Petullo <mike@flyn.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "volume_id_internal.h"
+
+#define LUKS_MAGIC_L 6
+#define UUID_STRING_L 40
+#define LUKS_CIPHERNAME_L 32
+#define LUKS_CIPHERMODE_L 32
+#define LUKS_HASHSPEC_L 32
+#define LUKS_DIGESTSIZE 20
+#define LUKS_SALTSIZE 32
+#define LUKS_NUMKEYS 8
+
+static const uint8_t LUKS_MAGIC[] = { 'L','U','K','S', 0xba, 0xbe };
+
+struct luks_phdr {
+ uint8_t magic[LUKS_MAGIC_L];
+ uint16_t version;
+ uint8_t cipherName[LUKS_CIPHERNAME_L];
+ uint8_t cipherMode[LUKS_CIPHERMODE_L];
+ uint8_t hashSpec[LUKS_HASHSPEC_L];
+ uint32_t payloadOffset;
+ uint32_t keyBytes;
+ uint8_t mkDigest[LUKS_DIGESTSIZE];
+ uint8_t mkDigestSalt[LUKS_SALTSIZE];
+ uint32_t mkDigestIterations;
+ uint8_t uuid[UUID_STRING_L];
+ struct {
+ uint32_t active;
+ uint32_t passwordIterations;
+ uint8_t passwordSalt[LUKS_SALTSIZE];
+ uint32_t keyMaterialOffset;
+ uint32_t stripes;
+ } keyblock[LUKS_NUMKEYS];
+};
+
+enum {
+ EXPECTED_SIZE_luks_phdr = 0
+ + 1 * LUKS_MAGIC_L
+ + 2
+ + 1 * LUKS_CIPHERNAME_L
+ + 1 * LUKS_CIPHERMODE_L
+ + 1 * LUKS_HASHSPEC_L
+ + 4
+ + 4
+ + 1 * LUKS_DIGESTSIZE
+ + 1 * LUKS_SALTSIZE
+ + 4
+ + 1 * UUID_STRING_L
+ + LUKS_NUMKEYS * (0
+ + 4
+ + 4
+ + 1 * LUKS_SALTSIZE
+ + 4
+ + 4
+ )
+};
+
+struct BUG_bad_size_luks_phdr {
+ char BUG_bad_size_luks_phdr[
+ sizeof(struct luks_phdr) == EXPECTED_SIZE_luks_phdr ?
+ 1 : -1];
+};
+
+int FAST_FUNC volume_id_probe_luks(struct volume_id *id /*,uint64_t off*/)
+{
+#define off ((uint64_t)0)
+ struct luks_phdr *header;
+
+ header = volume_id_get_buffer(id, off, sizeof(*header));
+ if (header == NULL)
+ return -1;
+
+ if (memcmp(header->magic, LUKS_MAGIC, LUKS_MAGIC_L))
+ return -1;
+
+// volume_id_set_usage(id, VOLUME_ID_CRYPTO);
+ volume_id_set_uuid(id, header->uuid, UUID_DCE_STRING);
+ IF_FEATURE_BLKID_TYPE(id->type = "crypto_LUKS";)
+
+ return 0;
+}