projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * fs/partitions/osf.c | |
| 3 | * | |
| 4 | * Code extracted from drivers/block/genhd.c | |
| 5 | * | |
| 6 | * Copyright (C) 1991-1998 Linus Torvalds | |
| 7 | * Re-organised Feb 1998 Russell King | |
| 8 | */ | |
| 9 | ||
| 10 | #include "check.h" | |
| 11 | #include "osf.h" | |
| 12 | ||
| 34d211a2 | 13 | #define MAX_OSF_PARTITIONS 18 |
| 1eafbfeb | 14 | |
| 1493bf21 | 15 | int osf_partition(struct parsed_partitions *state) |
| 1da177e4 LT |
16 | { |
| 17 | int i; | |
| 18 | int slot = 1; | |
| 1eafbfeb | 19 | unsigned int npartitions; |
| 1da177e4 LT |
20 | Sector sect; |
| 21 | unsigned char *data; | |
| 22 | struct disklabel { | |
| 23 | __le32 d_magic; | |
| 24 | __le16 d_type,d_subtype; | |
| 25 | u8 d_typename[16]; | |
| 26 | u8 d_packname[16]; | |
| 27 | __le32 d_secsize; | |
| 28 | __le32 d_nsectors; | |
| 29 | __le32 d_ntracks; | |
| 30 | __le32 d_ncylinders; | |
| 31 | __le32 d_secpercyl; | |
| 32 | __le32 d_secprtunit; | |
| 33 | __le16 d_sparespertrack; | |
| 34 | __le16 d_sparespercyl; | |
| 35 | __le32 d_acylinders; | |
| 36 | __le16 d_rpm, d_interleave, d_trackskew, d_cylskew; | |
| 37 | __le32 d_headswitch, d_trkseek, d_flags; | |
| 38 | __le32 d_drivedata[5]; | |
| 39 | __le32 d_spare[5]; | |
| 40 | __le32 d_magic2; | |
| 41 | __le16 d_checksum; | |
| 42 | __le16 d_npartitions; | |
| 43 | __le32 d_bbsize, d_sbsize; | |
| 44 | struct d_partition { | |
| 45 | __le32 p_size; | |
| 46 | __le32 p_offset; | |
| 47 | __le32 p_fsize; | |
| 48 | u8 p_fstype; | |
| 49 | u8 p_frag; | |
| 50 | __le16 p_cpg; | |
| 1eafbfeb | 51 | } d_partitions[MAX_OSF_PARTITIONS]; |
| 1da177e4 LT |
52 | } * label; |
| 53 | struct d_partition * partition; | |
| 54 | ||
| 1493bf21 | 55 | data = read_part_sector(state, 0, §); |
| 1da177e4 LT |
56 | if (!data) |
| 57 | return -1; | |
| 58 | ||
| 59 | label = (struct disklabel *) (data+64); | |
| 60 | partition = label->d_partitions; | |
| 61 | if (le32_to_cpu(label->d_magic) != DISKLABELMAGIC) { | |
| 62 | put_dev_sector(sect); | |
| 63 | return 0; | |
| 64 | } | |
| 65 | if (le32_to_cpu(label->d_magic2) != DISKLABELMAGIC) { | |
| 66 | put_dev_sector(sect); | |
| 67 | return 0; | |
| 68 | } | |
| 1eafbfeb TW |
69 | npartitions = le16_to_cpu(label->d_npartitions); |
| 70 | if (npartitions > MAX_OSF_PARTITIONS) { | |
| 71 | put_dev_sector(sect); | |
| 72 | return 0; | |
| 73 | } | |
| 74 | for (i = 0 ; i < npartitions; i++, partition++) { | |
| 1da177e4 LT |
75 | if (slot == state->limit) |
| 76 | break; | |
| 77 | if (le32_to_cpu(partition->p_size)) | |
| 78 | put_partition(state, slot, | |
| 79 | le32_to_cpu(partition->p_offset), | |
| 80 | le32_to_cpu(partition->p_size)); | |
| 81 | slot++; | |
| 82 | } | |
| 9c867fbe | 83 | strlcat(state->pp_buf, "\n", PAGE_SIZE); |
| 1da177e4 LT |
84 | put_dev_sector(sect); |
| 85 | return 1; | |
| 86 | } |