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selftests/pidfd: check PIDFD_THREAD survives open_by_handle_at()

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Verify that a thread pidfd reopened via open_by_handle_at() still
reports PIDFD_THREAD in F_GETFL.

Signed-off-by: Li Chen <me@linux.beauty>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/20260716052726.1032092-1-me@linux.beauty
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
This commit is contained in:
Christian Brauner 2026-07-22 13:50:53 +02:00
parent bb6bc13c53
commit 58af123ec7
1 changed files with 1 additions and 0 deletions
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tools/testing/selftests/pidfd/pidfd_file_handle_test.c
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@ -373,6 +373,7 @@ TEST_F(file_handle, open_by_handle_at_valid_flags)
O_CLOEXEC |
O_EXCL);
ASSERT_GE(pidfd, 0);
ASSERT_NE(fcntl(pidfd, F_GETFL) & PIDFD_THREAD, 0);
ASSERT_EQ(fstat(pidfd, &st2), 0);
ASSERT_TRUE(st1.st_dev == st2.st_dev && st1.st_ino == st2.st_ino);