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selftests/landlock: Add test for invalid ruleset file descriptor

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To align with fs_test's layout1.inval and layout0.proc_nsfs which test
EBADFD for landlock_add_rule(2), create a new base_test's
restrict_self_fd which test EBADFD for landlock_restrict_self(2).

Cc: Günther Noack <gnoack@google.com>
Cc: Paul Moore <paul@paul-moore.com>
Link: https://lore.kernel.org/r/20250320190717.2287696-21-mic@digikod.net
Signed-off-by: Mickaël Salaün <mic@digikod.net>
This commit is contained in:
Mickaël Salaün 2025-03-20 20:07:09 +01:00
parent ec2798d85b
commit ec12a8d4c1
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1 changed files with 11 additions and 0 deletions
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11
tools/testing/selftests/landlock/base_test.c
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@ -277,6 +277,17 @@ TEST(restrict_self_checks_ordering)
ASSERT_EQ(0, close(ruleset_fd));
}
TEST(restrict_self_fd)
{
int fd;
fd = open("/dev/null", O_RDONLY | O_CLOEXEC);
ASSERT_LE(0, fd);
EXPECT_EQ(-1, landlock_restrict_self(fd, 0));
EXPECT_EQ(EBADFD, errno);
}
TEST(ruleset_fd_io)
{
struct landlock_ruleset_attr ruleset_attr = {