diff options
| -rw-r--r-- | sysdeps/unix/sysv/linux/Makefile | 1 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/tst-mount.c | 95 |
2 files changed, 96 insertions, 0 deletions
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 \ # 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); + + 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 <support/test-driver.c> |