| 1 | #include <stdlib.h>
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| 2 | #include <assert.h>
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| 3 | #include <mem.h>
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| 4 | #include "mfs.h"
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| 5 | #include "mfs_utils.h"
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| 6 |
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| 7 | struct mfs_inode *mfs_read_inode_raw(const struct mfs_instance *instance,
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| 8 | uint16_t inum)
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| 9 | {
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| 10 | struct mfs_inode *ino;
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| 11 | struct mfs_sb_info *sbi;
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| 12 | block_t *b;
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| 13 | int i;
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| 14 |
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| 15 | const int ino_off = inum % V1_INODES_PER_BLOCK;
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| 16 | const size_t ino_size = sizeof(struct mfs_inode);
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| 17 |
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| 18 | ino = (struct mfs_inode *) malloc(ino_size);
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| 19 |
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| 20 | if (!ino)
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| 21 | return NULL;
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| 22 |
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| 23 | sbi = instance->sbi;
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| 24 | assert(sbi);
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| 25 |
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| 26 | const int itable_off = 2 + sbi->ibmap_blocks + sbi->zbmap_blocks;
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| 27 |
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| 28 | block_get(&b, instance->handle, itable_off + inum / V1_INODES_PER_BLOCK,
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| 29 | BLOCK_FLAGS_NONE);
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| 30 |
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| 31 | memcpy(ino, ((uint8_t *) b->data) + ino_off * ino_size, ino_size);
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| 32 |
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| 33 | ino->i_mode = conv16(sbi->native, ino->i_mode);
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| 34 | ino->i_uid = conv16(sbi->native, ino->i_uid);
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| 35 | ino->i_size = conv32(sbi->native, ino->i_size);
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| 36 | ino->i_mtime = conv32(sbi->native, ino->i_mtime);
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| 37 |
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| 38 | for (i = 0; i < V1_NR_DIRECT_ZONES; ++i)
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| 39 | ino->i_dzone[i] = conv16(sbi->native, ino->i_dzone[i]);
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| 40 |
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| 41 | for (i = 0; i < V1_NR_INDIRECT_ZONES; ++i)
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| 42 | ino->i_izone[i] = conv16(sbi->native, ino->i_izone[i]);
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| 43 |
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| 44 | block_put(b);
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| 45 |
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| 46 | return ino;
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| 47 | }
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| 48 |
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| 49 | struct mfs2_inode *mfs2_read_inode_raw(const struct mfs_instance *instance,
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| 50 | uint32_t inum)
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| 51 | {
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| 52 | struct mfs2_inode *ino;
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| 53 | struct mfs_sb_info *sbi;
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| 54 | block_t *b;
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| 55 | int i;
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| 56 |
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| 57 | const size_t ino_size = sizeof(struct mfs2_inode);
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| 58 |
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| 59 | ino = (struct mfs2_inode *) malloc(ino_size);
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| 60 |
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| 61 | if (!ino)
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| 62 | return NULL;
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| 63 |
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| 64 | sbi = instance->sbi;
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| 65 | assert(sbi);
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| 66 |
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| 67 | const int itable_off = 2 + sbi->ibmap_blocks + sbi->zbmap_blocks;
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| 68 | const int ino_off = inum % V3_INODES_PER_BLOCK(sbi->block_size);
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| 69 |
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| 70 | block_get(&b, instance->handle,
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| 71 | itable_off + inum / V3_INODES_PER_BLOCK(sbi->block_size),
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| 72 | BLOCK_FLAGS_NONE);
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| 73 |
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| 74 | memcpy(ino, ((uint8_t *)b->data) + ino_off * ino_size, ino_size);
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| 75 |
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| 76 | ino->i_mode = conv16(sbi->native, ino->i_mode);
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| 77 | ino->i_nlinks = conv16(sbi->native, ino->i_nlinks);
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| 78 | ino->i_uid = conv16(sbi->native, ino->i_uid);
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| 79 | ino->i_gid = conv16(sbi->native, ino->i_gid);
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| 80 | ino->i_size = conv32(sbi->native, ino->i_size);
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| 81 | ino->i_atime = conv32(sbi->native, ino->i_atime);
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| 82 | ino->i_mtime = conv32(sbi->native, ino->i_mtime);
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| 83 | ino->i_ctime = conv32(sbi->native, ino->i_ctime);
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| 84 |
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| 85 | for (i = 0; i < V2_NR_DIRECT_ZONES; ++i)
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| 86 | ino->i_dzone[i] = conv32(sbi->native, ino->i_dzone[i]);
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| 87 |
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| 88 | for (i = 0; i < V2_NR_INDIRECT_ZONES; ++i)
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| 89 | ino->i_izone[i] = conv32(sbi->native, ino->i_izone[i]);
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| 90 |
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| 91 | block_put(b);
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| 92 |
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| 93 | return ino;
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| 94 | }
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| 95 |
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