selftests/landlock: Add tests for whiteout object creation

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Add tests to check that whiteout object creation is guarded by
LANDLOCK_ACCESS_FS_MAKE_REG, in the cases where these are created from
userspace:

* Conventional creation with mknod()
* Linking or renaming an existing whiteout object
* renameat2() with RENAME_WHITEOUT,
  which creates a new whiteout object in the source location
* renameat2() with RENAME_EXCHANGE,
  with one of the renamed objects being a whiteout object

Signed-off-by: Günther Noack <gnoack@google.com>
Link: https://patch.msgid.link/20260813093157.1436894-4-gnoack@google.com
[mic: Update commit message as requested]
Signed-off-by: Mickaël Salaün <mic@digikod.net>

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Günther Noack 2026-08-13 11:31:54 +02:00 • committed by Mickaël Salaün

parent 672fa082d4

commit ee890889b3

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tools/testing/selftests/landlock/fs_test.c

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