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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:29:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:29:51 +0000
commit6e7a315eb67cb6c113cf37e1d66c4f11a51a2b3e (patch)
tree32451fa3cdd9321fb2591fada9891b2cb70a9cd1 /include/grub/zfs/zio.h
parentInitial commit. (diff)
downloadgrub2-6e7a315eb67cb6c113cf37e1d66c4f11a51a2b3e.tar.xz
grub2-6e7a315eb67cb6c113cf37e1d66c4f11a51a2b3e.zip
Adding upstream version 2.06.upstream/2.06upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/grub/zfs/zio.h')
-rw-r--r--include/grub/zfs/zio.h95
1 files changed, 95 insertions, 0 deletions
diff --git a/include/grub/zfs/zio.h b/include/grub/zfs/zio.h
new file mode 100644
index 0000000..19ce136
--- /dev/null
+++ b/include/grub/zfs/zio.h
@@ -0,0 +1,95 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
+ *
+ * GRUB is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+/*
+ * Copyright 2010 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#ifndef _ZIO_H
+#define _ZIO_H
+
+#include <grub/zfs/spa.h>
+
+#define ZEC_MAGIC 0x210da7ab10c7a11ULL /* zio data bloc tail */
+
+typedef struct zio_eck {
+ grub_uint64_t zec_magic; /* for validation, endianness */
+ zio_cksum_t zec_cksum; /* 256-bit checksum */
+} GRUB_PACKED zio_eck_t;
+
+/*
+ * Gang block headers are self-checksumming and contain an array
+ * of block pointers.
+ */
+#define SPA_GANGBLOCKSIZE SPA_MINBLOCKSIZE
+#define SPA_GBH_NBLKPTRS ((SPA_GANGBLOCKSIZE - \
+ sizeof (zio_eck_t)) / sizeof (blkptr_t))
+#define SPA_GBH_FILLER ((SPA_GANGBLOCKSIZE - \
+ sizeof (zio_eck_t) - \
+ (SPA_GBH_NBLKPTRS * sizeof (blkptr_t))) /\
+ sizeof (grub_uint64_t))
+
+#define ZIO_GET_IOSIZE(zio) \
+ (BP_IS_GANG((zio)->io_bp) ? \
+ SPA_GANGBLOCKSIZE : BP_GET_PSIZE((zio)->io_bp))
+
+typedef struct zio_gbh {
+ blkptr_t zg_blkptr[SPA_GBH_NBLKPTRS];
+ grub_uint64_t zg_filler[SPA_GBH_FILLER];
+ zio_eck_t zg_tail;
+} zio_gbh_phys_t;
+
+enum zio_checksum {
+ ZIO_CHECKSUM_INHERIT = 0,
+ ZIO_CHECKSUM_ON,
+ ZIO_CHECKSUM_OFF,
+ ZIO_CHECKSUM_LABEL,
+ ZIO_CHECKSUM_GANG_HEADER,
+ ZIO_CHECKSUM_ZILOG,
+ ZIO_CHECKSUM_FLETCHER_2,
+ ZIO_CHECKSUM_FLETCHER_4,
+ ZIO_CHECKSUM_SHA256,
+ ZIO_CHECKSUM_ZILOG2,
+ ZIO_CHECKSUM_SHA256_MAC,
+ ZIO_CHECKSUM_FUNCTIONS
+};
+
+#define ZIO_CHECKSUM_ON_VALUE ZIO_CHECKSUM_FLETCHER_2
+#define ZIO_CHECKSUM_DEFAULT ZIO_CHECKSUM_ON
+
+enum zio_compress {
+ ZIO_COMPRESS_INHERIT = 0,
+ ZIO_COMPRESS_ON,
+ ZIO_COMPRESS_OFF,
+ ZIO_COMPRESS_LZJB,
+ ZIO_COMPRESS_EMPTY,
+ ZIO_COMPRESS_GZIP1,
+ ZIO_COMPRESS_GZIP2,
+ ZIO_COMPRESS_GZIP3,
+ ZIO_COMPRESS_GZIP4,
+ ZIO_COMPRESS_GZIP5,
+ ZIO_COMPRESS_GZIP6,
+ ZIO_COMPRESS_GZIP7,
+ ZIO_COMPRESS_GZIP8,
+ ZIO_COMPRESS_GZIP9,
+ ZIO_COMPRESS_ZLE,
+ ZIO_COMPRESS_LZ4,
+ ZIO_COMPRESS_FUNCTIONS
+};
+
+#endif /* _ZIO_H */