From: Carlos O'Donell <carlos@redhat.com>
To: Adhemerval Zanella <adhemerval.zanella@linaro.org>,
libc-alpha@sourceware.org
Subject: Re: [PATCH v7 4/5] linux: Add tst-mount to check for Linux new mount API
Date: Mon, 4 Jul 2022 17:45:32 -0400 [thread overview]
Message-ID: <1ec93ab7-bf63-52b6-7b37-4d01e6135216@redhat.com> (raw)
In-Reply-To: <20220624195919.435424-5-adhemerval.zanella@linaro.org>
On 6/24/22 15:59, Adhemerval Zanella wrote:
> The new mount API was added on Linux 5.2 with six new syscalls:
> fsopen, fsconfig, fsmount, move_mount, fspick, and open_tree.
>
> The new test verifies minimal functionality along with error paths
> for specific arguments and their corner cases.
>
> Checked on x86_64-linux-gnu.
LGTM. Exercises error paths.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
> ---
> sysdeps/unix/sysv/linux/Makefile | 1 +
> sysdeps/unix/sysv/linux/tst-mount.c | 95 +++++++++++++++++++++++++++++
> 2 files changed, 96 insertions(+)
> create mode 100644 sysdeps/unix/sysv/linux/tst-mount.c
>
> diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile
> index 7ffcf7ed83..2ccc92b6b8 100644
> --- a/sysdeps/unix/sysv/linux/Makefile
> +++ b/sysdeps/unix/sysv/linux/Makefile
> @@ -130,6 +130,7 @@ tests += tst-clone tst-clone2 tst-clone3 tst-fanotify tst-personality \
> tst-getauxval \
> tst-pidfd \
> tst-process_mrelease \
> + tst-mount \
OK.
> # tests
>
> # process_madvise requires CAP_SYS_ADMIN.
> diff --git a/sysdeps/unix/sysv/linux/tst-mount.c b/sysdeps/unix/sysv/linux/tst-mount.c
> new file mode 100644
> index 0000000000..12a665f950
> --- /dev/null
> +++ b/sysdeps/unix/sysv/linux/tst-mount.c
> @@ -0,0 +1,95 @@
> +/* Basic tests for the new Linux API added on Linux 5.2.
> + Copyright (C) 2022 Free Software Foundation, Inc.
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public License as
> + published by the Free Software Foundation; either version 2.1 of the
> + License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; see the file COPYING.LIB. If
> + not, see <https://www.gnu.org/licenses/>. */
> +
> +#include <errno.h>
> +#include <support/check.h>
> +#include <support/xunistd.h>
> +#include <support/namespace.h>
> +#include <sys/wait.h>
> +#include <sys/mount.h>
> +
> +static void
> +subprocess (void)
> +{
> + int r = fsopen ("it_should_be_not_a_valid_mount", 0);
> + TEST_VERIFY_EXIT (r == -1);
> + if (errno == ENOSYS)
> + FAIL_UNSUPPORTED ("kernel does not support new mount API, skipping test");
> + TEST_COMPARE (errno, ENODEV);
OK. Invalid mount path.
> +
> + int fd = fsopen ("tmpfs", FSOPEN_CLOEXEC);
> + TEST_VERIFY (fd != -1);
> +
> + TEST_COMPARE (fsconfig (-1, FSCONFIG_SET_STRING, "size", "2048", 0), -1);
> + TEST_COMPARE (errno, EINVAL);
> +
> + {
> + int r = fsconfig (fd, FSCONFIG_SET_STRING, "size", "2048", 0);
> + TEST_VERIFY (r != -1);
> + r = fsconfig (fd, FSCONFIG_CMD_CREATE, NULL, NULL, 0);
> + TEST_VERIFY (r != -1);
> + }
> +
> + TEST_COMPARE (fsmount (-1, FSMOUNT_CLOEXEC, MOUNT_ATTR_NODEV), -1);
> + TEST_COMPARE (errno, EBADF);
OK. -1 is an invalid fd.
> +
> + int mfd = fsmount (fd, FSMOUNT_CLOEXEC, MOUNT_ATTR_NODEV);
> + TEST_VERIFY (mfd != -1);
> +
> + TEST_COMPARE (move_mount (-1, "", AT_FDCWD, "/tmp", 0), -1);
> + TEST_COMPARE (errno, ENOENT);
> + {
> + int r = move_mount (mfd, "", AT_FDCWD, "/tmp", MOVE_MOUNT_F_EMPTY_PATH);
> + TEST_VERIFY (r != -1);
> + }
> +
> + TEST_COMPARE (fspick (AT_FDCWD, "", 0), -1);
> + TEST_COMPARE (errno, ENOENT);
> + {
> + int pfd = fspick (AT_FDCWD, "/tmp", FSPICK_CLOEXEC);
> + TEST_VERIFY (pfd != -1);
> + }
OK.
> +
> + TEST_COMPARE (open_tree (AT_FDCWD, "", 0), -1);
> + TEST_COMPARE (errno, ENOENT);
> + {
> + int fd_tree = open_tree (AT_FDCWD, "/tmp",
> + OPEN_TREE_CLONE | OPEN_TREE_CLOEXEC);
> + TEST_VERIFY (fd_tree != -1);
OK.
> + }
> +
> + _exit (0);
> +}
> +
> +static int
> +do_test (void)
> +{
> + support_become_root ();
> +
> + pid_t pid = xfork ();
> + if (pid == 0)
> + subprocess ();
> +
> + int status;
> + xwaitpid (pid, &status, 0);
> + TEST_VERIFY (WIFEXITED (status));
> +
> + return 0;
> +}
> +
> +#include <support/test-driver.c>
--
Cheers,
Carlos.
next prev parent reply other threads:[~2022-07-04 21:45 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-24 19:59 [PATCH v7 0/5] linux: Add new syscalls Adhemerval Zanella
2022-06-24 19:59 ` [PATCH v7 1/5] linux: Add fsconfig Adhemerval Zanella
2022-07-04 21:36 ` Carlos O'Donell
2022-07-11 8:16 ` Fangrui Song
2022-07-11 14:47 ` Carlos O'Donell
2022-06-24 19:59 ` [PATCH v7 2/5] linux: Add fspick Adhemerval Zanella
2022-07-04 21:39 ` Carlos O'Donell
2022-06-24 19:59 ` [PATCH v7 3/5] linux: Add open_tree Adhemerval Zanella
2022-07-04 21:42 ` Carlos O'Donell
2022-06-24 19:59 ` [PATCH v7 4/5] linux: Add tst-mount to check for Linux new mount API Adhemerval Zanella
2022-07-04 21:45 ` Carlos O'Donell [this message]
2022-06-24 19:59 ` [PATCH v7 5/5] linux: Add mount_setattr Adhemerval Zanella
2022-07-04 21:51 ` Carlos O'Donell
2022-07-06 9:25 ` Andreas Schwab
2022-07-06 12:21 ` Adhemerval Zanella
2022-07-10 2:28 ` Rudi Heitbaum
2022-07-11 12:51 ` Adhemerval Zanella
2022-07-11 13:13 ` Rudi Heitbaum
2022-07-12 13:11 ` Rudi Heitbaum
2022-07-12 15:33 ` Adhemerval Zanella Netto
2022-07-11 8:30 ` Andreas Schwab
2022-07-11 8:55 ` Florian Weimer
2022-07-11 12:49 ` Adhemerval Zanella
2022-07-11 12:53 ` Florian Weimer
2022-07-25 15:08 ` Andreas Schwab
2022-07-26 0:28 ` Rudi Heitbaum
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