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selftests/pidfd: test extended attribute support 

Test that extended attributes are permanent.

Link: https://lore.kernel.org/20250618-work-pidfs-persistent-v2-14-98f3456fd552@kernel.org
Reviewed-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Christian Brauner 2025-06-18 22:53:48 +02:00
parent 49fba37259
commit 7442d093df
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GPG Key ID: 91C61BC06578DCA2
1 changed files with 35 additions and 0 deletions
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35
tools/testing/selftests/pidfd/pidfd_xattr_test.c
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@ -94,4 +94,39 @@ TEST_F(pidfs_xattr, set_get_list_xattr_multiple)
}
}
TEST_F(pidfs_xattr, set_get_list_xattr_persistent)
{
int ret;
char buf[32];
char list[PATH_MAX] = {};
ret = fsetxattr(self->child_pidfd, "trusted.persistent", "persistent value", strlen("persistent value"), 0);
ASSERT_EQ(ret, 0);
memset(buf, 0, sizeof(buf));
ret = fgetxattr(self->child_pidfd, "trusted.persistent", buf, sizeof(buf));
ASSERT_EQ(ret, strlen("persistent value"));
ASSERT_EQ(strcmp(buf, "persistent value"), 0);
ret = flistxattr(self->child_pidfd, list, sizeof(list));
ASSERT_GT(ret, 0);
ASSERT_EQ(strcmp(list, "trusted.persistent"), 0)
ASSERT_EQ(close(self->child_pidfd), 0);
self->child_pidfd = -EBADF;
sleep(2);
self->child_pidfd = sys_pidfd_open(self->child_pid, 0);
ASSERT_GE(self->child_pidfd, 0);
memset(buf, 0, sizeof(buf));
ret = fgetxattr(self->child_pidfd, "trusted.persistent", buf, sizeof(buf));
ASSERT_EQ(ret, strlen("persistent value"));
ASSERT_EQ(strcmp(buf, "persistent value"), 0);
ret = flistxattr(self->child_pidfd, list, sizeof(list));
ASSERT_GT(ret, 0);
ASSERT_EQ(strcmp(list, "trusted.persistent"), 0);
}
TEST_HARNESS_MAIN