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f34e9ce5f4
Add a test to verify that the SIGURG signal created by an out-of-bound message in UNIX sockets is well controlled by the file_send_sigiotask hook. Test coverage for security/landlock is 92.2% of 1046 lines according to gcc/gcov-14. Signed-off-by: Tahera Fahimi <fahimitahera@gmail.com> Link: https://lore.kernel.org/r/50daeed4d4f60d71e9564d0f24004a373fc5f7d5.1725657728.git.fahimitahera@gmail.com [mic: Improve commit message and add test coverage, improve test with four variants to fully cover the hook, use abstract unix socket to avoid managing a file, use dedicated variable per process, add comments, avoid negative ASSERT, move close calls] Co-developed-by: Mickaël Salaün <mic@digikod.net> Signed-off-by: Mickaël Salaün <mic@digikod.net>