| Jorgen Lundman | 9b4a1f9 | 2012-07-19 20:48:25 +0000 | [diff] [blame] | 1 | /* |
| 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 | |
| 29 | typedef 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 | |
| 53 | enum 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 | |
| 63 | struct zfs_filesystem { |
| 64 | |
| 65 | /* Block Device Descriptor */ |
| 66 | block_dev_desc_t *dev_desc; |
| 67 | }; |
| 68 | |
| 69 | |
| 70 | extern block_dev_desc_t *zfs_dev_desc; |
| 71 | |
| 72 | struct device_s { |
| 73 | uint64_t part_length; |
| 74 | }; |
| 75 | typedef struct device_s *device_t; |
| 76 | |
| 77 | struct zfs_file { |
| 78 | device_t device; |
| 79 | uint64_t size; |
| 80 | void *data; |
| 81 | uint64_t offset; |
| 82 | }; |
| 83 | |
| 84 | typedef struct zfs_file *zfs_file_t; |
| 85 | |
| 86 | struct zfs_dirhook_info { |
| 87 | int dir; |
| 88 | int mtimeset; |
| 89 | time_t mtime; |
| 90 | time_t mtime2; |
| 91 | }; |
| 92 | |
| 93 | |
| 94 | |
| 95 | |
| 96 | struct zfs_filesystem *zfsget_fs(void); |
| 97 | int init_fs(block_dev_desc_t *dev_desc); |
| 98 | void deinit_fs(block_dev_desc_t *dev_desc); |
| 99 | int zfs_open(zfs_file_t, const char *filename); |
| 100 | uint64_t zfs_read(zfs_file_t, char *buf, uint64_t len); |
| 101 | struct zfs_data *zfs_mount(device_t); |
| 102 | int zfs_close(zfs_file_t); |
| 103 | int zfs_ls(device_t dev, const char *path, |
| 104 | int (*hook) (const char *, const struct zfs_dirhook_info *)); |
| 105 | int zfs_devread(int sector, int byte_offset, int byte_len, char *buf); |
| 106 | int zfs_set_blk_dev(block_dev_desc_t *rbdd, int part); |
| 107 | void zfs_unmount(struct zfs_data *data); |
| 108 | int lzjb_decompress(void *, void *, uint32_t, uint32_t); |
| 109 | #endif |