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Jorgen Lundman4d3c95f2012-07-19 20:48:25 +00001/*
2 * ZFS filesystem port for Uboot by
3 * Jorgen Lundman <lundman at lundman.net>
4 *
5 * zfsfs support
6 * made from existing GRUB Sources by Sun, GNU and others.
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 */
21
22#ifndef __ZFS_COMMON__
23#define __ZFS_COMMON__
24
25#define SECTOR_SIZE 0x200
26#define SECTOR_BITS 9
27
28
29typedef enum zfs_endian {
30 UNKNOWN_ENDIAN = -2,
31 LITTLE_ENDIAN = -1,
32 BIG_ENDIAN = 0
33} zfs_endian_t;
34
35
36/* Endian macros. */
37#define zfs_to_cpu16(x, a) (((a) == BIG_ENDIAN) ? be16_to_cpu(x) \
38 : le16_to_cpu(x))
39#define cpu_to_zfs16(x, a) (((a) == BIG_ENDIAN) ? cpu_to_be16(x) \
40 : cpu_to_le16(x))
41
42#define zfs_to_cpu32(x, a) (((a) == BIG_ENDIAN) ? be32_to_cpu(x) \
43 : le32_to_cpu(x))
44#define cpu_to_zfs32(x, a) (((a) == BIG_ENDIAN) ? cpu_to_be32(x) \
45 : cpu_to_le32(x))
46
47#define zfs_to_cpu64(x, a) (((a) == BIG_ENDIAN) ? be64_to_cpu(x) \
48 : le64_to_cpu(x))
49#define cpu_to_zfs64(x, a) (((a) == BIG_ENDIAN) ? cpu_to_be64(x) \
50 : cpu_to_le64(x))
51
52
53enum zfs_errors {
54 ZFS_ERR_NONE = 0,
55 ZFS_ERR_NOT_IMPLEMENTED_YET = -1,
56 ZFS_ERR_BAD_FS = -2,
57 ZFS_ERR_OUT_OF_MEMORY = -3,
58 ZFS_ERR_FILE_NOT_FOUND = -4,
59 ZFS_ERR_BAD_FILE_TYPE = -5,
60 ZFS_ERR_OUT_OF_RANGE = -6,
61};
62
63struct zfs_filesystem {
64
65 /* Block Device Descriptor */
66 block_dev_desc_t *dev_desc;
67};
68
69
70extern block_dev_desc_t *zfs_dev_desc;
71
72struct device_s {
73 uint64_t part_length;
74};
75typedef struct device_s *device_t;
76
77struct zfs_file {
78 device_t device;
79 uint64_t size;
80 void *data;
81 uint64_t offset;
82};
83
84typedef struct zfs_file *zfs_file_t;
85
86struct zfs_dirhook_info {
87 int dir;
88 int mtimeset;
89 time_t mtime;
90 time_t mtime2;
91};
92
93
94
95
96struct zfs_filesystem *zfsget_fs(void);
97int init_fs(block_dev_desc_t *dev_desc);
98void deinit_fs(block_dev_desc_t *dev_desc);
99int zfs_open(zfs_file_t, const char *filename);
100uint64_t zfs_read(zfs_file_t, char *buf, uint64_t len);
101struct zfs_data *zfs_mount(device_t);
102int zfs_close(zfs_file_t);
103int zfs_ls(device_t dev, const char *path,
104 int (*hook) (const char *, const struct zfs_dirhook_info *));
105int zfs_devread(int sector, int byte_offset, int byte_len, char *buf);
106int zfs_set_blk_dev(block_dev_desc_t *rbdd, int part);
107void zfs_unmount(struct zfs_data *data);
108int lzjb_decompress(void *, void *, uint32_t, uint32_t);
109#endif