[Bug 2132150] [NEW] dd: O_DIRECT partial block writes fail

[Max Gilmour]

Public bug reported:

In the rust-coreutils versions currently in the archive, dd fails to
write partial blocks with the O_DIRECT flag. This is currently causing
autopkgtest failures for packages such as cryptsetup.

This issue is known upstream[1] and has been fixed in rust-coreutils
0.4.0[2].

Upgrading rust-coreutils to 0.4.0 will fix this bug.

================
Bug reproduction
================
Create a file with a size that's not a multiple of block size (3 8K blocks + 511 bytes):

root at test:~# for run in {1..25087}; do echo -n -e '\x42' >> test_direct_input.iso; done
root at test:~# dd if=/root/test_direct_input.iso of=/root/test_direct_output.img oflag=direct bs=8192 status=none
dd: IO error: Invalid input

This bug is reproducible for rust-coreutils 0.2.2 and 0.3.0.

[1]: https://github.com/uutils/coreutils/issues/9003
[2]: https://github.com/uutils/coreutils/pull/9016

** Affects: rust-coreutils (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: update-excuse

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https://bugs.launchpad.net/bugs/2132150

Title:
  dd: O_DIRECT partial block writes fail

Status in rust-coreutils package in Ubuntu:
  New

Bug description:
  In the rust-coreutils versions currently in the archive, dd fails to
  write partial blocks with the O_DIRECT flag. This is currently causing
  autopkgtest failures for packages such as cryptsetup.

  This issue is known upstream[1] and has been fixed in rust-coreutils
  0.4.0[2].

  Upgrading rust-coreutils to 0.4.0 will fix this bug.

  ================
  Bug reproduction
  ================
  Create a file with a size that's not a multiple of block size (3 8K blocks + 511 bytes):

  root at test:~# for run in {1..25087}; do echo -n -e '\x42' >> test_direct_input.iso; done
  root at test:~# dd if=/root/test_direct_input.iso of=/root/test_direct_output.img oflag=direct bs=8192 status=none
  dd: IO error: Invalid input

  This bug is reproducible for rust-coreutils 0.2.2 and 0.3.0.

  [1]: https://github.com/uutils/coreutils/issues/9003
  [2]: https://github.com/uutils/coreutils/pull/9016

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