3 * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 */
19 /*
20 * Copyright 2010 Sun Microsystems, Inc. All rights reserved.
21 * Use is subject to license terms.
22 */
23
24 #ifndef _ZIO_H
25 #define _ZIO_H
26
27 #define ZEC_MAGIC 0x210da7ab10c7a11ULL /* zio data bloc tail */
28
29 typedef struct zio_eck {
30 uint64_t zec_magic; /* for validation, endianness */
31 zio_cksum_t zec_cksum; /* 256-bit checksum */
32 } zio_eck_t;
33
34 /*
35 * Gang block headers are self-checksumming and contain an array
36 * of block pointers.
37 */
38 #define SPA_GANGBLOCKSIZE SPA_MINBLOCKSIZE
39 #define SPA_GBH_NBLKPTRS ((SPA_GANGBLOCKSIZE - \
40 sizeof (zio_eck_t)) / sizeof (blkptr_t))
41 #define SPA_GBH_FILLER ((SPA_GANGBLOCKSIZE - \
42 sizeof (zio_eck_t) - \
56 enum zio_checksum {
57 ZIO_CHECKSUM_INHERIT = 0,
58 ZIO_CHECKSUM_ON,
59 ZIO_CHECKSUM_OFF,
60 ZIO_CHECKSUM_LABEL,
61 ZIO_CHECKSUM_GANG_HEADER,
62 ZIO_CHECKSUM_ZILOG,
63 ZIO_CHECKSUM_FLETCHER_2,
64 ZIO_CHECKSUM_FLETCHER_4,
65 ZIO_CHECKSUM_SHA256,
66 ZIO_CHECKSUM_ZILOG2,
67 ZIO_CHECKSUM_FUNCTIONS
68 };
69
70 enum zio_compress {
71 ZIO_COMPRESS_INHERIT = 0,
72 ZIO_COMPRESS_ON,
73 ZIO_COMPRESS_OFF,
74 ZIO_COMPRESS_LZJB,
75 ZIO_COMPRESS_EMPTY,
76 ZIO_COMPRESS_FUNCTIONS
77 };
78
79 #endif /* _ZIO_H */
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3 * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 */
19 /*
20 * Copyright 2010 Sun Microsystems, Inc. All rights reserved.
21 * Use is subject to license terms.
22 */
23 /*
24 * Copyright 2013 by Saso Kiselkov. All rights reserved.
25 */
26
27 #ifndef _ZIO_H
28 #define _ZIO_H
29
30 #define ZEC_MAGIC 0x210da7ab10c7a11ULL /* zio data bloc tail */
31
32 typedef struct zio_eck {
33 uint64_t zec_magic; /* for validation, endianness */
34 zio_cksum_t zec_cksum; /* 256-bit checksum */
35 } zio_eck_t;
36
37 /*
38 * Gang block headers are self-checksumming and contain an array
39 * of block pointers.
40 */
41 #define SPA_GANGBLOCKSIZE SPA_MINBLOCKSIZE
42 #define SPA_GBH_NBLKPTRS ((SPA_GANGBLOCKSIZE - \
43 sizeof (zio_eck_t)) / sizeof (blkptr_t))
44 #define SPA_GBH_FILLER ((SPA_GANGBLOCKSIZE - \
45 sizeof (zio_eck_t) - \
59 enum zio_checksum {
60 ZIO_CHECKSUM_INHERIT = 0,
61 ZIO_CHECKSUM_ON,
62 ZIO_CHECKSUM_OFF,
63 ZIO_CHECKSUM_LABEL,
64 ZIO_CHECKSUM_GANG_HEADER,
65 ZIO_CHECKSUM_ZILOG,
66 ZIO_CHECKSUM_FLETCHER_2,
67 ZIO_CHECKSUM_FLETCHER_4,
68 ZIO_CHECKSUM_SHA256,
69 ZIO_CHECKSUM_ZILOG2,
70 ZIO_CHECKSUM_FUNCTIONS
71 };
72
73 enum zio_compress {
74 ZIO_COMPRESS_INHERIT = 0,
75 ZIO_COMPRESS_ON,
76 ZIO_COMPRESS_OFF,
77 ZIO_COMPRESS_LZJB,
78 ZIO_COMPRESS_EMPTY,
79 ZIO_COMPRESS_GZIP_1,
80 ZIO_COMPRESS_GZIP_2,
81 ZIO_COMPRESS_GZIP_3,
82 ZIO_COMPRESS_GZIP_4,
83 ZIO_COMPRESS_GZIP_5,
84 ZIO_COMPRESS_GZIP_6,
85 ZIO_COMPRESS_GZIP_7,
86 ZIO_COMPRESS_GZIP_8,
87 ZIO_COMPRESS_GZIP_9,
88 ZIO_COMPRESS_ZLE,
89 ZIO_COMPRESS_LZ4,
90 ZIO_COMPRESS_FUNCTIONS
91 };
92
93 #endif /* _ZIO_H */
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