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 110