kernel/tools/testing/selftests/pidfd/pidfd.h, branch linux-5.11.y

tests: add waitid() tests for non-blocking pidfds

2020-09-04T11:48:57Z

Verify that the PIDFD_NONBLOCK flag works with pidfd_open() and that waitid() with a non-blocking pidfd returns EAGAIN: TAP version 13 1..3 # Starting 3 tests from 1 test cases. # RUN global.wait_simple ... # OK global.wait_simple ok 1 global.wait_simple # RUN global.wait_states ... # OK global.wait_states ok 2 global.wait_states # RUN global.wait_nonblock ... # OK global.wait_nonblock ok 3 global.wait_nonblock # PASSED: 3 / 3 tests passed. # Totals: pass:3 fail:0 xfail:0 xpass:0 skip:0 error:0 Signed-off-by: Christian Brauner Reviewed-by: Josh Triplett Cc: Shuah Khan Cc: linux-kselftest@vger.kernel.org Link: https://lore.kernel.org/r/20200902102130.147672-5-christian.brauner@ubuntu.com

tests: add CLONE_NEWTIME setns tests

2020-07-08T09:14:22Z

Now that pidfds support CLONE_NEWTIME as well enable testing them in the setns() testuite. Signed-off-by: Christian Brauner Cc: Serge Hallyn Cc: Michael Kerrisk Cc: Dmitry Safonov Cc: Andrei Vagin Link: https://lore.kernel.org/r/20200706154912.3248030-5-christian.brauner@ubuntu.com

tests: test for setns() EINVAL regression

2020-06-16T22:48:54Z

Verify that setns() reports EINVAL when an fd is passed that refers to an open file but the file is not a file descriptor useable to interact with namespaces. Cc: Jan Stancek Cc: Cyril Hrubis Link: https://lore.kernel.org/lkml/20200615085836.GR12456@shao2-debian Signed-off-by: Christian Brauner

selftests: add pid namespace ENOMEM regression test

2020-03-25T12:50:34Z

We recently regressed (cf. [1] and its corresponding fix in [2]) returning ENOMEM when trying to create a process in a pid namespace whose init process/child subreaper has already died. This has caused confusion at least once before that (cf. [3]). Let's add a simple regression test to catch this in the future. [1]: 49cb2fc42ce4 ("fork: extend clone3() to support setting a PID") [2]: b26ebfe12f34 ("pid: Fix error return value in some cases") [3]: 35f71bc0a09a ("fork: report pid reservation failure properly") Cc: Corey Minyard Cc: Oleg Nesterov Cc: Adrian Reber Cc: Dmitry Safonov <0x7f454c46@gmail.com> Cc: Andrei Vagin Signed-off-by: Christian Brauner

test: Add test for pidfd getfd

2020-01-13T20:49:54Z

The following tests: * Fetch FD, and then compare via kcmp * Make sure getfd can be blocked by blocking ptrace_may_access * Making sure fetching bad FDs fails * Make sure trying to set flags to non-zero results in an EINVAL Signed-off-by: Sargun Dhillon Acked-by: Christian Brauner Link: https://lore.kernel.org/r/20200107175927.4558-5-sargun@sargun.me Signed-off-by: Christian Brauner

tests: move common definitions and functions into pidfd.h

2019-08-06T17:39:45Z

Move definitions and functions used across different pidfd tests into pidfd.h header. Signed-off-by: Suren Baghdasaryan Reviewed-by: Christian Brauner Link: https://lore.kernel.org/r/20190726162226.252750-1-surenb@google.com Signed-off-by: Christian Brauner

pidfd: add pidfd_wait tests

2019-08-06T17:39:30Z

Add tests for pidfd_wait() and CLONE_WAIT_PID: - test that waitid(P_PIDFD) fails on /proc/ - test that waitid(P_PIDFD) fails on /dev/null - test that waitid(P_PIDFD) can wait on a pidfd - test that waitid(P_PIDFD) can wait on a pidfd and return siginfo_t - test that waitid(P_PIDFD) works with WEXITED - test that waitid(P_PIDFD) works with WSTOPPED - test that waitid(P_PIDFD) works with WUNTRACED - test that waitid(P_PIDFD) works with WCONTINUED - test that waitid(P_PIDFD) works with WNOWAIT - test that waitid(P_PIDFD)works with WNOHANG Signed-off-by: Christian Brauner Reviewed-by: Kees Cook Cc: Arnd Bergmann Cc: "Eric W. Biederman" Cc: Joel Fernandes (Google) Cc: Thomas Gleixner Cc: David Howells Cc: Jann Horn Cc: Andy Lutomirsky Cc: Andrew Morton Cc: Oleg Nesterov Cc: Aleksa Sarai Cc: Linus Torvalds Cc: Al Viro Link: https://lore.kernel.org/r/20190727222229.6516-3-christian@brauner.io

tests: add pidfd_open() tests

2019-06-28T10:17:55Z

This adds testing for the new pidfd_open() syscalls. Specifically, we test: - that no invalid flags can be passed to pidfd_open() - that no invalid pid can be passed to pidfd_open() - that a pidfd can be retrieved with pidfd_open() - that the retrieved pidfd references the correct pid Signed-off-by: Christian Brauner Cc: Arnd Bergmann Cc: "Eric W. Biederman" Cc: Kees Cook Cc: Joel Fernandes (Google) Cc: Thomas Gleixner Cc: Jann Horn Cc: David Howells Cc: "Michael Kerrisk (man-pages)" Cc: Andy Lutomirsky Cc: Andrew Morton Cc: Oleg Nesterov Cc: Aleksa Sarai Cc: Linus Torvalds Cc: Al Viro Cc: linux-api@vger.kernel.org