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todo: upstream our ioctls to rustix, forbid unsafe #123

@allisonkarlitskaya

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@allisonkarlitskaya

We have a small number of custom ioctl implementations:

  • FS_IOC_ENABLE_VERITY
  • FS_IOC_MEASURE_VERITY
  • LOOP_CTL_GET_FREE
  • LOOP_CONFIGURE

these are all of the unsafe code in all of composefs-rs.

The reason we implement those ourselves is pretty simple: rustix doesn't contain support. We should look into seeing if upstream would accept these so that we can forbid unsafe code in composefs-rs.

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