47 lines
1.5 KiB
Plaintext
47 lines
1.5 KiB
Plaintext
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Implementation of UFS2 on Haiku
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===============================
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While making a device for testing I have used a usb drive and formatted it to
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UFS2 by using the following commands in FreeBSD. Here da0 is usb.
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gpart destroy -F /dev/da0
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gpart create -s gpt /dev/da0
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gpart add -t freebsd-ufs /dev/da0
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newfs /dev/da0p1
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By running the following commands you can run the implemented code of UFS2.
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Commands
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--------
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# Building the ufs2 shell
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jam -q "<build>ufs2_shell"
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To run it, use
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jam run objects/linux/x86_64/release/tests/add-ons/kernel/file_systems/ufs2/ufs2_shell/ufs2_shell <path_to_the_image>
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If you are using a usb drive then you may not be able to open it so, you just
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need to add sudo in the beginning of above command and make sure that you have
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not mounted the usb drive.
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Alternatively you can start from an existing freebsd image, so it has some files in it:
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Download FreeBSD-12.1-RELEASE-amd64-mini-memstick.img
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diskimage register FreeBSD-12.1-RELEASE-amd64-mini-memstick.img to access the MBR style partitions inside it (on Linux probably using mount -o loop or something like that)
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dd if=/dev/disk/virtual/files/8/1 bs=8K skip=1 of=fbsd_ufstest.img to extract the filesystem from the partition (skipping the freebsd disklabel)
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Check the result: file fbsd_ufstest.img
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fbsd_ufstest.img: Unix Fast File system [v2] (little-endian)
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During the implementation of the project the following links were found useful.
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https://github.com/freebsd/freebsd/blob/master/sys/ufs/ffs/fs.h
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https://flylib.com/books/en/2.48.1/ufs2_inodes.html
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