From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ua1-x932.google.com (mail-ua1-x932.google.com [IPv6:2607:f8b0:4864:20::932]) by sourceware.org (Postfix) with ESMTPS id EFD863858428 for ; Thu, 3 Feb 2022 17:46:58 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org EFD863858428 Received: by mail-ua1-x932.google.com with SMTP id r8so6696879uaj.0 for ; Thu, 03 Feb 2022 09:46:58 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=IshmM0AC66Qns4MrDemSq0pWadEcJYXF+udAuwvd42E=; b=eNgRL3181H8wCX6jNP8Cdxqlb1BN8TTSpG9p44VApGVfxZA6bu0ABb5jBV8nNPwsY9 zCjNMnOqTJpaKV5yTrRlDr+SdczUb9oKpn2nkYJGwX2L4QjOdgpUtlmigZI4aynDEUhD n1qP56IoCVQ67ZzJ14/0C5JsqqFZs+wePW1Ksg/91VDE1hIlhrIIgFht0BT0i7fjjfjN qJJUVbKx/VfXW75gdmK798p+Fg5O6vI99mMxHuIovIC4pYtIMybPe4/oMooTxDKaLQHg wTvCdg8RAErWorCZLuVFdlmTOpa7Q9uZ6/HTZs8Aso7r+uDYyfin4VKXWJsP6sdzIYKr Z+pg== X-Gm-Message-State: AOAM53005ovK77RuLnL1z5vx4rkZ1Hc/CNGiaXnDZXKL5Zjzp3bTP+oA TkE1QWWtqtgk7Ct2s29pMu6MfWai/8RaOQ== X-Google-Smtp-Source: ABdhPJzOtRNVeXcVBOvs6fXitfc/7VcLuqMPqN2kk9jEPsd39ATV6rnfUkG50IBNGExPEO4MifUrmw== X-Received: by 2002:a67:c907:: with SMTP id w7mr14017730vsk.60.1643910418299; Thu, 03 Feb 2022 09:46:58 -0800 (PST) Received: from birita.. ([2804:431:c7ca:709a:22aa:9542:591f:6eb9]) by smtp.gmail.com with ESMTPSA id m25sm7294887uaq.3.2022.02.03.09.46.56 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 03 Feb 2022 09:46:57 -0800 (PST) From: Adhemerval Zanella To: libc-alpha@sourceware.org Subject: [PATCH 14/15] linux: Add tst-mount to check for Linux new mount API Date: Thu, 3 Feb 2022 14:46:33 -0300 Message-Id: <20220203174634.3474775-15-adhemerval.zanella@linaro.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220203174634.3474775-1-adhemerval.zanella@linaro.org> References: <20220203174634.3474775-1-adhemerval.zanella@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-12.7 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, KAM_SHORT, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 03 Feb 2022 17:47:00 -0000 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 is far from extensive and only check for error path and minimal funcionality to see if arguments are issued correctly. Checked on x86_64-linux-gnu. --- 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 f7440fd9f3..cdaabba358 100644 --- a/sysdeps/unix/sysv/linux/Makefile +++ b/sysdeps/unix/sysv/linux/Makefile @@ -129,6 +129,7 @@ tests += tst-clone tst-clone2 tst-clone3 tst-fanotify tst-personality \ tst-epoll \ tst-pidfd \ tst-process_mrelease \ + tst-mount \ # 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 . */ + +#include +#include +#include +#include +#include +#include + +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); + + 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); + + 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); + } + + 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); + } + + _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 -- 2.32.0