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Linux doesn't perform enough canonicalization on certain filesystems #1094

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opened 2026-01-04 11:26:04 +00:00 by raito · 2 comments
raito commented 2026-01-04 11:26:04 +00:00
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Certain filesystem possess a special API akin to #1090 APIs.

https://man7.org/linux/man-pages/man2/ioctl_xfs_fsgetxattr.2.html

  This API is implemented by the ext4, xfs, btrfs, and f2fs
  filesystems on the Linux kernel.  Not all fields may be understood
  by filesystems other than xfs.

We should try to look if a filesystem supports them on Linux and scrub everything as much as possible as well. It's going to be hard to test without NixOS tests…

Certain filesystem possess a special API akin to #1090 APIs. https://man7.org/linux/man-pages/man2/ioctl_xfs_fsgetxattr.2.html > This API is implemented by the ext4, xfs, btrfs, and f2fs > filesystems on the Linux kernel. Not all fields may be understood > by filesystems other than xfs. We should try to look if a filesystem supports them on Linux and scrub everything as much as possible as well. It's going to be hard to test without NixOS tests…
pennae commented 2026-01-04 16:18:51 +00:00
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none of these are interesting for us. the marginally interesting ones requires very special capabilities to set, and even then they only prevent file deletion or renaming. everything else just sets performance characteristics, which is not something we need to be worried about a whole lot?

none of these are interesting for us. the marginally interesting ones requires very special capabilities to set, and even then they only prevent file deletion or renaming. everything else just sets performance characteristics, which is not something we need to be worried about a whole lot?
raito commented 2026-01-04 16:40:26 +00:00
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Works for me, just wanted a double check.

Works for me, just wanted a double check.
raito closed this issue 2026-01-04 16:40:26 +00:00
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lix-project/lix#1094
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