| /* |
| * This is the original minix inode layout on disk. |
| * Note the 8-bit gid and atime and ctime. |
| */ |
| struct minix1_inode { |
| uint16_t i_mode; |
| uint16_t i_uid; |
| uint32_t i_size; |
| uint32_t i_time; |
| uint8_t i_gid; |
| uint8_t i_nlinks; |
| uint16_t i_zone[9]; |
| }; |
| |
| /* |
| * The new minix inode has all the time entries, as well as |
| * long block numbers and a third indirect block (7+1+1+1 |
| * instead of 7+1+1). Also, some previously 8-bit values are |
| * now 16-bit. The inode is now 64 bytes instead of 32. |
| */ |
| struct minix2_inode { |
| uint16_t i_mode; |
| uint16_t i_nlinks; |
| uint16_t i_uid; |
| uint16_t i_gid; |
| uint32_t i_size; |
| uint32_t i_atime; |
| uint32_t i_mtime; |
| uint32_t i_ctime; |
| uint32_t i_zone[10]; |
| }; |
| |
| /* |
| * minix super-block data on disk |
| */ |
| struct minix_super_block { |
| uint16_t s_ninodes; |
| uint16_t s_nzones; |
| uint16_t s_imap_blocks; |
| uint16_t s_zmap_blocks; |
| uint16_t s_firstdatazone; |
| uint16_t s_log_zone_size; |
| uint32_t s_max_size; |
| uint16_t s_magic; |
| uint16_t s_state; |
| uint32_t s_zones; |
| }; |
| |
| struct minix_dir_entry { |
| uint16_t inode; |
| char name[0]; |
| }; |
| |
| /* Believe it or not, but mount.h has this one #defined */ |
| #undef BLOCK_SIZE |
| |
| enum { |
| BLOCK_SIZE = 1024, |
| BITS_PER_BLOCK = BLOCK_SIZE << 3, |
| |
| MINIX_ROOT_INO = 1, |
| MINIX_BAD_INO = 2, |
| |
| MINIX1_SUPER_MAGIC = 0x137F, /* original minix fs */ |
| MINIX1_SUPER_MAGIC2 = 0x138F, /* minix fs, 30 char names */ |
| MINIX2_SUPER_MAGIC = 0x2468, /* minix V2 fs */ |
| MINIX2_SUPER_MAGIC2 = 0x2478, /* minix V2 fs, 30 char names */ |
| MINIX_VALID_FS = 0x0001, /* clean fs */ |
| MINIX_ERROR_FS = 0x0002, /* fs has errors */ |
| |
| INODE_SIZE1 = sizeof(struct minix1_inode), |
| INODE_SIZE2 = sizeof(struct minix2_inode), |
| MINIX1_INODES_PER_BLOCK = BLOCK_SIZE / sizeof(struct minix1_inode), |
| MINIX2_INODES_PER_BLOCK = BLOCK_SIZE / sizeof(struct minix2_inode), |
| }; |
| |
| /* |
| Basic test script for regressions in mkfs/fsck. |
| Copies current dir into image (typically bbox build tree). |
| |
| #!/bin/sh |
| tmpdir=/tmp/minixtest-$$ |
| tmpimg=/tmp/minix-img-$$ |
| |
| mkdir $tmpdir |
| dd if=/dev/zero of=$tmpimg bs=1M count=20 || exit |
| ./busybox mkfs.minix $tmpimg || exit |
| mount -o loop $tmpimg $tmpdir || exit |
| cp -a "$PWD" $tmpdir |
| umount $tmpdir || exit |
| ./busybox fsck.minix -vfm $tmpimg || exit |
| echo "Continue?" |
| read junk |
| ./busybox fsck.minix -vfml $tmpimg || exit |
| rmdir $tmpdir |
| rm $tmpimg |
| |
| */ |