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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 16:29:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 16:29:51 +0000 |
commit | 6e7a315eb67cb6c113cf37e1d66c4f11a51a2b3e (patch) | |
tree | 32451fa3cdd9321fb2591fada9891b2cb70a9cd1 /include/grub/zfs/zio.h | |
parent | Initial commit. (diff) | |
download | grub2-upstream/2.06.tar.xz grub2-upstream/2.06.zip |
Adding upstream version 2.06.upstream/2.06upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | include/grub/zfs/zio.h | 95 |
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 */ |