| // Copyright 2017 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <limits.h> |
| #include <stdalign.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/stat.h> |
| #include <sys/statfs.h> |
| #include <sys/statvfs.h> |
| #include <sys/types.h> |
| #include <time.h> |
| #include <unistd.h> |
| |
| #include <fbl/string.h> |
| #include <fbl/string_buffer.h> |
| #include <fbl/unique_fd.h> |
| #include <fs-test-utils/fixture.h> |
| #include <fs-test-utils/unittest.h> |
| #include <fuchsia/hardware/block/c/fidl.h> |
| #include <fuchsia/hardware/block/volume/c/fidl.h> |
| #include <fuchsia/io/c/fidl.h> |
| #include <lib/fzl/fdio.h> |
| #include <unittest/unittest.h> |
| #include <zircon/device/block.h> |
| #include <zircon/device/vfs.h> |
| #include <zircon/syscalls.h> |
| |
| #include <fs-management/mount.h> |
| #include <ramdevice-client/ramdisk.h> |
| |
| #include <utility> |
| |
| namespace { |
| |
| fs_test_utils::FixtureOptions PartitionOverFvmWithRamdisk() { |
| fs_test_utils::FixtureOptions options = |
| fs_test_utils::FixtureOptions::Default(DISK_FORMAT_MINFS); |
| options.use_fvm = true; |
| options.fs_format = false; |
| options.fs_mount = false; |
| return options; |
| } |
| |
| fs_test_utils::FixtureOptions MinfsRamdiskOptions() { |
| fs_test_utils::FixtureOptions options = |
| fs_test_utils::FixtureOptions::Default(DISK_FORMAT_MINFS); |
| options.use_fvm = false; |
| options.fs_format = true; |
| options.fs_mount = true; |
| return options; |
| } |
| |
| bool CheckMountedFs(const char* path, const char* fs_name, size_t len) { |
| BEGIN_HELPER; |
| fbl::unique_fd fd(open(path, O_RDONLY | O_DIRECTORY)); |
| ASSERT_TRUE(fd); |
| |
| fuchsia_io_FilesystemInfo info; |
| zx_status_t status; |
| fzl::FdioCaller caller(std::move(fd)); |
| ASSERT_EQ(fuchsia_io_DirectoryAdminQueryFilesystem(caller.borrow_channel(), &status, &info), |
| ZX_OK); |
| ASSERT_EQ(status, ZX_OK); |
| ASSERT_EQ(strncmp(fs_name, reinterpret_cast<char*>(info.name), strlen(fs_name)), 0); |
| ASSERT_LE(info.used_nodes, info.total_nodes, "Used nodes greater than free nodes"); |
| ASSERT_LE(info.used_bytes, info.total_bytes, "Used bytes greater than free bytes"); |
| // TODO(planders): eventually check that total/used counts are > 0 |
| END_HELPER; |
| } |
| |
| bool MountUnmountShared(size_t block_size) { |
| BEGIN_HELPER; |
| |
| ramdisk_client_t* ramdisk = nullptr; |
| const char* mount_path = "/tmp/mount_unmount"; |
| |
| ASSERT_EQ(ramdisk_create(block_size, 1 << 16, &ramdisk), ZX_OK); |
| const char* ramdisk_path = ramdisk_get_path(ramdisk); |
| ASSERT_EQ(mkfs(ramdisk_path, DISK_FORMAT_MINFS, launch_stdio_sync, &default_mkfs_options), |
| ZX_OK); |
| ASSERT_EQ(mkdir(mount_path, 0666), 0); |
| ASSERT_TRUE(CheckMountedFs(mount_path, "memfs", strlen("memfs"))); |
| int fd = open(ramdisk_path, O_RDWR); |
| ASSERT_GT(fd, 0); |
| ASSERT_EQ(mount(fd, mount_path, DISK_FORMAT_MINFS, &default_mount_options, launch_stdio_async), |
| ZX_OK); |
| ASSERT_TRUE(CheckMountedFs(mount_path, "minfs", strlen("minfs"))); |
| ASSERT_EQ(umount(mount_path), ZX_OK); |
| ASSERT_TRUE(CheckMountedFs(mount_path, "memfs", strlen("memfs"))); |
| ASSERT_EQ(ramdisk_destroy(ramdisk), 0); |
| ASSERT_EQ(unlink(mount_path), 0); |
| END_HELPER; |
| } |
| |
| bool MountUnmount() { |
| BEGIN_TEST; |
| ASSERT_TRUE(MountUnmountShared(512)); |
| END_TEST; |
| } |
| |
| bool MountUnmountLargeBlock() { |
| BEGIN_TEST; |
| ASSERT_TRUE(MountUnmountShared(8192)); |
| END_TEST; |
| } |
| |
| bool MountMkdirUnmount() { |
| const char* mount_path = "/tmp/mount_mkdir_unmount"; |
| |
| BEGIN_TEST; |
| ramdisk_client_t* ramdisk = nullptr; |
| ASSERT_EQ(ramdisk_create(512, 1 << 16, &ramdisk), ZX_OK); |
| const char* ramdisk_path = ramdisk_get_path(ramdisk); |
| ASSERT_EQ(mkfs(ramdisk_path, DISK_FORMAT_MINFS, launch_stdio_sync, &default_mkfs_options), |
| ZX_OK); |
| int fd = open(ramdisk_path, O_RDWR); |
| ASSERT_GT(fd, 0); |
| mount_options_t options = default_mount_options; |
| options.create_mountpoint = true; |
| ASSERT_EQ(mount(fd, mount_path, DISK_FORMAT_MINFS, &options, launch_stdio_async), ZX_OK); |
| ASSERT_TRUE(CheckMountedFs(mount_path, "minfs", strlen("minfs"))); |
| ASSERT_EQ(umount(mount_path), ZX_OK); |
| ASSERT_TRUE(CheckMountedFs(mount_path, "memfs", strlen("memfs"))); |
| ASSERT_EQ(ramdisk_destroy(ramdisk), 0); |
| ASSERT_EQ(unlink(mount_path), 0); |
| END_TEST; |
| } |
| |
| bool FmountFunmount() { |
| const char* mount_path = "/tmp/mount_unmount"; |
| |
| BEGIN_TEST; |
| ramdisk_client_t* ramdisk = nullptr; |
| ASSERT_EQ(ramdisk_create(512, 1 << 16, &ramdisk), ZX_OK); |
| const char* ramdisk_path = ramdisk_get_path(ramdisk); |
| ASSERT_EQ(mkfs(ramdisk_path, DISK_FORMAT_MINFS, launch_stdio_sync, &default_mkfs_options), |
| ZX_OK); |
| ASSERT_EQ(mkdir(mount_path, 0666), 0); |
| ASSERT_TRUE(CheckMountedFs(mount_path, "memfs", strlen("memfs"))); |
| int fd = open(ramdisk_path, O_RDWR); |
| ASSERT_GT(fd, 0); |
| |
| int mountfd = open(mount_path, O_RDONLY | O_DIRECTORY | O_ADMIN); |
| ASSERT_GT(mountfd, 0, "Couldn't open mount point"); |
| ASSERT_EQ(fmount(fd, mountfd, DISK_FORMAT_MINFS, &default_mount_options, launch_stdio_async), |
| ZX_OK); |
| ASSERT_TRUE(CheckMountedFs(mount_path, "minfs", strlen("minfs"))); |
| ASSERT_EQ(fumount(mountfd), ZX_OK); |
| ASSERT_TRUE(CheckMountedFs(mount_path, "memfs", strlen("memfs"))); |
| ASSERT_EQ(ramdisk_destroy(ramdisk), 0); |
| ASSERT_EQ(close(mountfd), 0, "Couldn't close ex-mount point"); |
| ASSERT_EQ(unlink(mount_path), 0); |
| END_TEST; |
| } |
| |
| // All "parent" filesystems attempt to mount a MinFS ramdisk under malicious |
| // conditions. |
| // |
| // Note: For cases where "fmount" fails, we briefly sleep to allow the |
| // filesystem to unmount itself and relinquish control of the block device. |
| bool DoMountEvil(const char* parentfs_name, const char* mount_path) { |
| BEGIN_HELPER; |
| ramdisk_client_t* ramdisk = nullptr; |
| ASSERT_EQ(ramdisk_create(512, 1 << 16, &ramdisk), ZX_OK); |
| const char* ramdisk_path = ramdisk_get_path(ramdisk); |
| ASSERT_EQ(mkfs(ramdisk_path, DISK_FORMAT_MINFS, launch_stdio_sync, &default_mkfs_options), |
| ZX_OK); |
| ASSERT_EQ(mkdir(mount_path, 0666), 0); |
| |
| int fd = open(ramdisk_path, O_RDWR); |
| ASSERT_GT(fd, 0); |
| |
| int mountfd = open(mount_path, O_RDONLY | O_DIRECTORY | O_ADMIN); |
| ASSERT_GT(mountfd, 0, "Couldn't open mount point"); |
| |
| // Everything *would* be perfect to call fmount, when suddenly... |
| ASSERT_EQ(rmdir(mount_path), 0); |
| // The directory was unlinked! We can't mount now! |
| ASSERT_EQ(fmount(fd, mountfd, DISK_FORMAT_MINFS, &default_mount_options, launch_stdio_async), |
| ZX_ERR_NOT_DIR); |
| usleep(10000); |
| ASSERT_NE(fumount(mountfd), ZX_OK); |
| ASSERT_EQ(close(mountfd), 0, "Couldn't close unlinked not-mount point"); |
| |
| // Re-acquire the ramdisk mount point; it's always consumed... |
| fd = open(ramdisk_path, O_RDWR); |
| ASSERT_GT(fd, 0); |
| |
| // Okay, okay, let's get a new mount path... |
| mountfd = open(mount_path, O_CREAT | O_RDWR); |
| ASSERT_GT(mountfd, 0); |
| // Wait a sec, that was a file, not a directory! We can't mount that! |
| ASSERT_EQ(fmount(fd, mountfd, DISK_FORMAT_MINFS, &default_mount_options, launch_stdio_async), |
| ZX_ERR_ACCESS_DENIED); |
| usleep(10000); |
| ASSERT_NE(fumount(mountfd), ZX_OK); |
| ASSERT_EQ(close(mountfd), 0, "Couldn't close file not-mount point"); |
| ASSERT_EQ(unlink(mount_path), 0); |
| |
| // Re-acquire the ramdisk mount point again... |
| fd = open(ramdisk_path, O_RDWR); |
| ASSERT_GT(fd, 0); |
| ASSERT_EQ(mkdir(mount_path, 0666), 0); |
| // Try mounting without O_ADMIN (which is disallowed) |
| mountfd = open(mount_path, O_RDONLY | O_DIRECTORY); |
| ASSERT_GT(mountfd, 0, "Couldn't open mount point"); |
| ASSERT_EQ(fmount(fd, mountfd, DISK_FORMAT_MINFS, &default_mount_options, launch_stdio_async), |
| ZX_ERR_ACCESS_DENIED); |
| usleep(10000); |
| ASSERT_EQ(close(mountfd), 0, "Couldn't close the unpriviledged mount point"); |
| |
| // Okay, fine, let's mount successfully... |
| fd = open(ramdisk_path, O_RDWR); |
| ASSERT_GT(fd, 0); |
| mountfd = open(mount_path, O_RDONLY | O_DIRECTORY | O_ADMIN); |
| ASSERT_GT(mountfd, 0, "Couldn't open mount point"); |
| ASSERT_EQ(fmount(fd, mountfd, DISK_FORMAT_MINFS, &default_mount_options, launch_stdio_async), |
| ZX_OK); |
| // Awesome, that worked. But we shouldn't be able to mount again! |
| fd = open(ramdisk_path, O_RDWR); |
| ASSERT_GT(fd, 0); |
| ASSERT_EQ(fmount(fd, mountfd, DISK_FORMAT_MINFS, &default_mount_options, launch_stdio_async), |
| ZX_ERR_BAD_STATE); |
| usleep(10000); |
| ASSERT_TRUE(CheckMountedFs(mount_path, "minfs", strlen("minfs"))); |
| |
| // Let's try removing the mount point (we shouldn't be allowed to do so) |
| ASSERT_EQ(rmdir(mount_path), -1); |
| ASSERT_EQ(errno, EBUSY); |
| |
| // Let's try telling the target filesystem to shut down |
| // WITHOUT O_ADMIN |
| fbl::unique_fd badfd(open(mount_path, O_RDONLY | O_DIRECTORY)); |
| ASSERT_TRUE(badfd); |
| zx_status_t status; |
| fzl::FdioCaller caller(std::move(badfd)); |
| ASSERT_EQ(fuchsia_io_DirectoryAdminUnmount(caller.borrow_channel(), &status), ZX_OK); |
| ASSERT_EQ(status, ZX_ERR_ACCESS_DENIED); |
| ASSERT_EQ(close(caller.release().release()), 0); |
| |
| // Let's try unmounting the filesystem WITHOUT O_ADMIN |
| // (unpinning the remote handle from the parent FS). |
| badfd.reset(open(mount_path, O_RDONLY | O_DIRECTORY)); |
| ASSERT_TRUE(badfd); |
| zx_handle_t h; |
| caller.reset(std::move(badfd)); |
| ASSERT_EQ(fuchsia_io_DirectoryAdminUnmountNode(caller.borrow_channel(), &status, &h), ZX_OK); |
| ASSERT_EQ(h, ZX_HANDLE_INVALID); |
| ASSERT_EQ(status, ZX_ERR_ACCESS_DENIED); |
| ASSERT_EQ(close(caller.release().release()), 0); |
| |
| // When we unmount with an O_ADMIN handle, it should successfully detach. |
| ASSERT_EQ(fumount(mountfd), ZX_OK); |
| ASSERT_TRUE(CheckMountedFs(mount_path, parentfs_name, strlen(parentfs_name))); |
| ASSERT_EQ(close(mountfd), 0); |
| ASSERT_EQ(rmdir(mount_path), 0); |
| ASSERT_EQ(ramdisk_destroy(ramdisk), 0); |
| END_HELPER; |
| } |
| |
| bool MountEvilMemfs() { |
| BEGIN_TEST; |
| const char* mount_path = "/tmp/mount_evil"; |
| ASSERT_TRUE(DoMountEvil("memfs", mount_path)); |
| END_TEST; |
| } |
| |
| bool MountEvilMinfs() { |
| BEGIN_TEST; |
| ramdisk_client_t* ramdisk = nullptr; |
| ASSERT_EQ(ramdisk_create(512, 1 << 16, &ramdisk), ZX_OK); |
| const char* ramdisk_path = ramdisk_get_path(ramdisk); |
| ASSERT_EQ(mkfs(ramdisk_path, DISK_FORMAT_MINFS, launch_stdio_sync, &default_mkfs_options), |
| ZX_OK); |
| const char* parent_path = "/tmp/parent"; |
| ASSERT_EQ(mkdir(parent_path, 0666), 0); |
| int mountfd = open(parent_path, O_RDONLY | O_DIRECTORY | O_ADMIN); |
| ASSERT_GT(mountfd, 0, "Couldn't open mount point"); |
| int ramdiskfd = open(ramdisk_path, O_RDWR); |
| ASSERT_GT(ramdiskfd, 0); |
| ASSERT_EQ( |
| fmount(ramdiskfd, mountfd, DISK_FORMAT_MINFS, &default_mount_options, launch_stdio_async), |
| ZX_OK); |
| ASSERT_EQ(close(mountfd), 0); |
| |
| const char* mount_path = "/tmp/parent/mount_evil"; |
| ASSERT_TRUE(DoMountEvil("minfs", mount_path)); |
| |
| ASSERT_EQ(umount(parent_path), 0); |
| ASSERT_EQ(rmdir(parent_path), 0); |
| ASSERT_EQ(ramdisk_destroy(ramdisk), 0); |
| END_TEST; |
| } |
| |
| bool UmountTestEvil() { |
| const char* mount_path = "/tmp/umount_test_evil"; |
| |
| BEGIN_TEST; |
| |
| // Create a ramdisk, mount minfs |
| ramdisk_client_t* ramdisk = nullptr; |
| ASSERT_EQ(ramdisk_create(512, 1 << 16, &ramdisk), ZX_OK); |
| const char* ramdisk_path = ramdisk_get_path(ramdisk); |
| ASSERT_EQ(mkfs(ramdisk_path, DISK_FORMAT_MINFS, launch_stdio_sync, &default_mkfs_options), |
| ZX_OK); |
| ASSERT_EQ(mkdir(mount_path, 0666), 0); |
| ASSERT_TRUE(CheckMountedFs(mount_path, "memfs", strlen("memfs"))); |
| int fd = open(ramdisk_path, O_RDWR); |
| ASSERT_GT(fd, 0); |
| ASSERT_EQ(mount(fd, mount_path, DISK_FORMAT_MINFS, &default_mount_options, launch_stdio_async), |
| ZX_OK); |
| ASSERT_TRUE(CheckMountedFs(mount_path, "minfs", strlen("minfs"))); |
| |
| // Try re-opening the root without O_ADMIN. We shouldn't be able to umount. |
| fbl::unique_fd weak_root_fd(open(mount_path, O_RDONLY | O_DIRECTORY)); |
| ASSERT_TRUE(weak_root_fd); |
| zx_status_t status; |
| fzl::FdioCaller caller(std::move(weak_root_fd)); |
| ASSERT_EQ(fuchsia_io_DirectoryAdminUnmount(caller.borrow_channel(), &status), ZX_OK); |
| ASSERT_EQ(status, ZX_ERR_ACCESS_DENIED); |
| weak_root_fd.reset(caller.release().release()); |
| |
| // Try opening a non-root directory without O_ADMIN. We shouldn't be able |
| // to umount. |
| ASSERT_EQ(mkdirat(weak_root_fd.get(), "subdir", 0666), 0); |
| fbl::unique_fd weak_subdir_fd(openat(weak_root_fd.get(), "subdir", O_RDONLY | O_DIRECTORY)); |
| ASSERT_TRUE(weak_subdir_fd); |
| caller.reset(std::move(weak_subdir_fd)); |
| ASSERT_EQ(fuchsia_io_DirectoryAdminUnmount(caller.borrow_channel(), &status), ZX_OK); |
| ASSERT_EQ(status, ZX_ERR_ACCESS_DENIED); |
| |
| // Try opening a new directory with O_ADMIN. It shouldn't open. |
| weak_subdir_fd.reset(openat(weak_root_fd.get(), "subdir", O_RDONLY | O_DIRECTORY | O_ADMIN)); |
| ASSERT_FALSE(weak_subdir_fd); |
| |
| // Finally, umount using O_NOREMOTE and acquiring the connection |
| // that has "O_ADMIN" set. |
| ASSERT_EQ(umount(mount_path), ZX_OK); |
| ASSERT_TRUE(CheckMountedFs(mount_path, "memfs", strlen("memfs"))); |
| ASSERT_EQ(ramdisk_destroy(ramdisk), 0); |
| ASSERT_EQ(unlink(mount_path), 0); |
| END_TEST; |
| } |
| |
| bool DoubleMountRoot() { |
| const char* mount_path = "/tmp/double_mount_root"; |
| |
| BEGIN_TEST; |
| |
| // Create a ramdisk, mount minfs |
| ramdisk_client_t* ramdisk = nullptr; |
| ASSERT_EQ(ramdisk_create(512, 1 << 16, &ramdisk), ZX_OK); |
| const char* ramdisk_path = ramdisk_get_path(ramdisk); |
| ASSERT_EQ(mkfs(ramdisk_path, DISK_FORMAT_MINFS, launch_stdio_sync, &default_mkfs_options), |
| ZX_OK); |
| ASSERT_EQ(mkdir(mount_path, 0666), 0); |
| ASSERT_TRUE(CheckMountedFs(mount_path, "memfs", strlen("memfs"))); |
| int fd = open(ramdisk_path, O_RDWR); |
| ASSERT_GE(fd, 0); |
| ASSERT_EQ(mount(fd, mount_path, DISK_FORMAT_MINFS, &default_mount_options, launch_stdio_async), |
| ZX_OK); |
| ASSERT_TRUE(CheckMountedFs(mount_path, "minfs", strlen("minfs"))); |
| |
| // Create ANOTHER ramdisk, ready to be mounted... |
| // Try mounting again on top Minfs' remote root. |
| ramdisk_client_t* ramdisk2; |
| ASSERT_EQ(ramdisk_create(512, 1 << 16, &ramdisk2), ZX_OK); |
| const char* ramdisk_path2 = ramdisk_get_path(ramdisk2); |
| ASSERT_EQ(mkfs(ramdisk_path2, DISK_FORMAT_MINFS, launch_stdio_sync, &default_mkfs_options), |
| ZX_OK); |
| |
| // Try mounting on the mount point (locally; should fail because something is already mounted) |
| int mount_fd = open(mount_path, O_RDONLY | O_NOREMOTE | O_ADMIN); |
| ASSERT_GE(mount_fd, 0); |
| fd = open(ramdisk_path2, O_RDWR); |
| ASSERT_GE(fd, 0); |
| ASSERT_NE(fmount(fd, mount_fd, DISK_FORMAT_MINFS, &default_mount_options, launch_stdio_async), |
| ZX_OK); |
| ASSERT_EQ(close(mount_fd), 0); |
| |
| // Try mounting on the mount root (remote; should fail because MinFS doesn't allow mounting |
| // on top of the root directory). |
| mount_fd = open(mount_path, O_RDONLY | O_ADMIN); |
| ASSERT_GE(mount_fd, 0); |
| fd = open(ramdisk_path2, O_RDWR); |
| ASSERT_GE(fd, 0); |
| ASSERT_NE(fmount(fd, mount_fd, DISK_FORMAT_MINFS, &default_mount_options, launch_stdio_async), |
| ZX_OK); |
| ASSERT_EQ(close(mount_fd), 0); |
| |
| ASSERT_EQ(umount(mount_path), ZX_OK); |
| ASSERT_TRUE(CheckMountedFs(mount_path, "memfs", strlen("memfs"))); |
| ASSERT_EQ(ramdisk_destroy(ramdisk), 0); |
| ASSERT_EQ(ramdisk_destroy(ramdisk2), 0); |
| ASSERT_EQ(rmdir(mount_path), 0); |
| END_TEST; |
| } |
| |
| bool MountRemount() { |
| const char* mount_path = "/tmp/mount_remount"; |
| |
| BEGIN_TEST; |
| ramdisk_client_t* ramdisk = nullptr; |
| ASSERT_EQ(ramdisk_create(512, 1 << 16, &ramdisk), ZX_OK); |
| const char* ramdisk_path = ramdisk_get_path(ramdisk); |
| ASSERT_EQ(mkfs(ramdisk_path, DISK_FORMAT_MINFS, launch_stdio_sync, &default_mkfs_options), |
| ZX_OK); |
| ASSERT_EQ(mkdir(mount_path, 0666), 0); |
| |
| // We should still be able to mount and unmount the filesystem multiple times |
| for (size_t i = 0; i < 10; i++) { |
| int fd = open(ramdisk_path, O_RDWR); |
| ASSERT_GE(fd, 0); |
| ASSERT_EQ( |
| mount(fd, mount_path, DISK_FORMAT_MINFS, &default_mount_options, launch_stdio_async), |
| ZX_OK); |
| ASSERT_EQ(umount(mount_path), ZX_OK); |
| } |
| ASSERT_EQ(ramdisk_destroy(ramdisk), 0); |
| ASSERT_EQ(unlink(mount_path), 0); |
| END_TEST; |
| } |
| |
| bool MountFsck() { |
| const char* mount_path = "/tmp/mount_fsck"; |
| |
| BEGIN_TEST; |
| ramdisk_client_t* ramdisk = nullptr; |
| ASSERT_EQ(ramdisk_create(512, 1 << 16, &ramdisk), ZX_OK); |
| const char* ramdisk_path = ramdisk_get_path(ramdisk); |
| ASSERT_EQ(mkfs(ramdisk_path, DISK_FORMAT_MINFS, launch_stdio_sync, &default_mkfs_options), |
| ZX_OK); |
| ASSERT_EQ(mkdir(mount_path, 0666), 0); |
| int fd = open(ramdisk_path, O_RDWR); |
| ASSERT_GE(fd, 0, "Could not open ramdisk device"); |
| ASSERT_EQ(mount(fd, mount_path, DISK_FORMAT_MINFS, &default_mount_options, launch_stdio_async), |
| ZX_OK); |
| ASSERT_EQ(umount(mount_path), ZX_OK); |
| // fsck shouldn't require any user input for a newly mkfs'd filesystem |
| ASSERT_EQ(fsck(ramdisk_path, DISK_FORMAT_MINFS, &default_fsck_options, launch_stdio_sync), |
| ZX_OK); |
| ASSERT_EQ(ramdisk_destroy(ramdisk), 0); |
| ASSERT_EQ(unlink(mount_path), 0); |
| END_TEST; |
| } |
| |
| bool MountGetDevice() { |
| const char* mount_path = "/tmp/mount_get_device"; |
| |
| BEGIN_TEST; |
| ramdisk_client_t* ramdisk = nullptr; |
| ASSERT_EQ(ramdisk_create(512, 1 << 16, &ramdisk), ZX_OK); |
| const char* ramdisk_path = ramdisk_get_path(ramdisk); |
| ASSERT_EQ(mkfs(ramdisk_path, DISK_FORMAT_MINFS, launch_stdio_sync, &default_mkfs_options), |
| ZX_OK); |
| ASSERT_EQ(mkdir(mount_path, 0666), 0); |
| ASSERT_TRUE(CheckMountedFs(mount_path, "memfs", strlen("memfs"))); |
| |
| fbl::unique_fd mountfd(open(mount_path, O_RDONLY | O_ADMIN)); |
| ASSERT_TRUE(mountfd); |
| char device_buffer[1024]; |
| char* device_path = static_cast<char*>(device_buffer); |
| zx_status_t status; |
| size_t path_len; |
| fzl::FdioCaller caller(std::move(mountfd)); |
| ASSERT_EQ(fuchsia_io_DirectoryAdminGetDevicePath(caller.borrow_channel(), &status, |
| device_path, sizeof(device_buffer), |
| &path_len), |
| ZX_OK); |
| ASSERT_EQ(status, ZX_ERR_NOT_SUPPORTED); |
| |
| int fd = open(ramdisk_path, O_RDWR); |
| ASSERT_GT(fd, 0); |
| ASSERT_EQ(mount(fd, mount_path, DISK_FORMAT_MINFS, &default_mount_options, launch_stdio_async), |
| ZX_OK); |
| ASSERT_TRUE(CheckMountedFs(mount_path, "minfs", strlen("minfs"))); |
| |
| mountfd.reset(open(mount_path, O_RDONLY | O_ADMIN)); |
| ASSERT_TRUE(mountfd); |
| caller.reset(std::move(mountfd)); |
| ASSERT_EQ(fuchsia_io_DirectoryAdminGetDevicePath(caller.borrow_channel(), &status, |
| device_path, sizeof(device_buffer), |
| &path_len), |
| ZX_OK); |
| ASSERT_EQ(status, ZX_OK); |
| ASSERT_GT(path_len, 0, "Device path not found"); |
| ASSERT_EQ(strncmp(ramdisk_path, device_path, path_len), 0, "Unexpected device path"); |
| |
| mountfd.reset(open(mount_path, O_RDONLY)); |
| ASSERT_TRUE(mountfd); |
| caller.reset(std::move(mountfd)); |
| ASSERT_EQ(fuchsia_io_DirectoryAdminGetDevicePath(caller.borrow_channel(), &status, |
| device_path, sizeof(device_buffer), |
| &path_len), |
| ZX_OK); |
| ASSERT_EQ(status, ZX_ERR_ACCESS_DENIED); |
| |
| ASSERT_EQ(umount(mount_path), ZX_OK); |
| ASSERT_TRUE(CheckMountedFs(mount_path, "memfs", strlen("memfs"))); |
| |
| mountfd.reset(open(mount_path, O_RDONLY | O_ADMIN)); |
| ASSERT_TRUE(mountfd); |
| caller.reset(std::move(mountfd)); |
| ASSERT_EQ(fuchsia_io_DirectoryAdminGetDevicePath(caller.borrow_channel(), &status, |
| device_path, sizeof(device_buffer), |
| &path_len), |
| ZX_OK); |
| ASSERT_EQ(status, ZX_ERR_NOT_SUPPORTED); |
| |
| ASSERT_EQ(ramdisk_destroy(ramdisk), 0); |
| ASSERT_EQ(unlink(mount_path), 0); |
| END_TEST; |
| } |
| |
| // Mounts a minfs formatted partition to the desired point. |
| bool MountMinfs(int block_fd, bool read_only, const char* mount_path) { |
| BEGIN_HELPER; |
| mount_options_t options; |
| memcpy(&options, &default_mount_options, sizeof(mount_options_t)); |
| options.readonly = read_only; |
| |
| ASSERT_EQ(mount(block_fd, mount_path, DISK_FORMAT_MINFS, &options, launch_stdio_async), ZX_OK); |
| ASSERT_TRUE(CheckMountedFs(mount_path, "minfs", strlen("minfs"))); |
| END_HELPER; |
| } |
| |
| // Formats the ramdisk with minfs, and writes a small file to it. |
| bool CreateTestFile(const char* ramdisk_path, const char* mount_path, const char* file_name) { |
| BEGIN_HELPER; |
| ASSERT_EQ(mkfs(ramdisk_path, DISK_FORMAT_MINFS, launch_stdio_sync, &default_mkfs_options), |
| ZX_OK); |
| ASSERT_EQ(mkdir(mount_path, 0666), 0); |
| |
| int fd = open(ramdisk_path, O_RDWR); |
| ASSERT_GT(fd, 0); |
| ASSERT_TRUE(MountMinfs(fd, false, mount_path)); |
| |
| int root_fd = open(mount_path, O_RDONLY | O_DIRECTORY); |
| ASSERT_GE(root_fd, 0); |
| fd = openat(root_fd, file_name, O_CREAT | O_RDWR); |
| ASSERT_GE(fd, 0); |
| ASSERT_EQ(write(fd, "hello", 6), 6); |
| |
| ASSERT_EQ(close(fd), 0); |
| ASSERT_EQ(close(root_fd), 0); |
| ASSERT_EQ(umount(mount_path), ZX_OK); |
| END_HELPER; |
| } |
| |
| // Tests that setting read-only on the mount options works as expected. |
| bool MountReadonly() { |
| const char* mount_path = "/tmp/mount_readonly"; |
| const char file_name[] = "some_file"; |
| |
| BEGIN_TEST; |
| ramdisk_client_t* ramdisk = nullptr; |
| ASSERT_EQ(ramdisk_create(512, 1 << 16, &ramdisk), ZX_OK); |
| const char* ramdisk_path = ramdisk_get_path(ramdisk); |
| ASSERT_TRUE(CreateTestFile(ramdisk_path, mount_path, file_name)); |
| |
| int fd = open(ramdisk_path, O_RDWR); |
| ASSERT_GT(fd, 0); |
| |
| bool read_only = true; |
| ASSERT_TRUE(MountMinfs(fd, read_only, mount_path)); |
| |
| int root_fd = open(mount_path, O_RDONLY | O_DIRECTORY); |
| ASSERT_GE(root_fd, 0); |
| fd = openat(root_fd, file_name, O_CREAT | O_RDWR); |
| |
| // We can no longer open the file as writable |
| ASSERT_LT(fd, 0); |
| |
| // We CAN open it as readable though |
| fd = openat(root_fd, file_name, O_RDONLY); |
| ASSERT_GT(fd, 0); |
| ASSERT_LT(write(fd, "hello", 6), 0); |
| char buf[6]; |
| ASSERT_EQ(read(fd, buf, 6), 6); |
| ASSERT_EQ(memcmp(buf, "hello", 6), 0); |
| |
| ASSERT_LT(renameat(root_fd, file_name, root_fd, "new_file"), 0); |
| ASSERT_LT(unlinkat(root_fd, file_name, 0), 0); |
| |
| ASSERT_EQ(close(fd), 0); |
| ASSERT_EQ(close(root_fd), 0); |
| ASSERT_EQ(umount(mount_path), ZX_OK); |
| |
| ASSERT_EQ(ramdisk_destroy(ramdisk), 0); |
| ASSERT_EQ(unlink(mount_path), 0); |
| |
| END_TEST; |
| } |
| |
| // Test that when a block device claims to be read-only, the filesystem is mounted as read-only. |
| bool MountBlockReadonly() { |
| const char* mount_path = "/tmp/mount_readonly"; |
| const char file_name[] = "some_file"; |
| |
| BEGIN_TEST; |
| |
| ramdisk_client_t* ramdisk = nullptr; |
| ASSERT_EQ(ramdisk_create(512, 1 << 16, &ramdisk), ZX_OK); |
| const char* ramdisk_path = ramdisk_get_path(ramdisk); |
| ASSERT_TRUE(CreateTestFile(ramdisk_path, mount_path, file_name)); |
| |
| uint32_t flags = BLOCK_FLAG_READONLY; |
| ASSERT_EQ(ramdisk_set_flags(ramdisk, flags), ZX_OK); |
| |
| bool read_only = false; |
| ASSERT_TRUE(MountMinfs(ramdisk_get_block_fd(ramdisk), read_only, mount_path)); |
| |
| // We can't modify the file. |
| int root_fd = open(mount_path, O_RDONLY | O_DIRECTORY); |
| ASSERT_GE(root_fd, 0); |
| int fd = openat(root_fd, file_name, O_CREAT | O_RDWR); |
| ASSERT_LT(fd, 0); |
| |
| // We can open it as read-only. |
| fd = openat(root_fd, file_name, O_RDONLY); |
| ASSERT_GT(fd, 0); |
| ASSERT_EQ(close(fd), 0); |
| ASSERT_EQ(close(root_fd), 0); |
| ASSERT_EQ(umount(mount_path), ZX_OK); |
| |
| ASSERT_EQ(ramdisk_destroy(ramdisk), 0); |
| ASSERT_EQ(unlink(mount_path), 0); |
| |
| END_TEST; |
| } |
| |
| bool StatfsTest() { |
| const char* mount_path = "/tmp/mount_unmount"; |
| |
| BEGIN_TEST; |
| ramdisk_client_t* ramdisk = nullptr; |
| ASSERT_EQ(ramdisk_create(512, 1 << 16, &ramdisk), ZX_OK); |
| const char* ramdisk_path = ramdisk_get_path(ramdisk); |
| ASSERT_EQ(mkfs(ramdisk_path, DISK_FORMAT_MINFS, launch_stdio_sync, &default_mkfs_options), |
| ZX_OK); |
| ASSERT_EQ(mkdir(mount_path, 0666), 0); |
| int fd = open(ramdisk_path, O_RDWR); |
| ASSERT_GT(fd, 0); |
| ASSERT_EQ(mount(fd, mount_path, DISK_FORMAT_MINFS, &default_mount_options, launch_stdio_async), |
| ZX_OK); |
| |
| struct statfs stats; |
| int rc = statfs("", &stats); |
| int err = errno; |
| ASSERT_EQ(rc, -1); |
| ASSERT_EQ(err, ENOENT); |
| |
| rc = statfs(mount_path, &stats); |
| ASSERT_EQ(rc, 0); |
| |
| // Verify that at least some values make sense, without making the test too brittle. |
| ASSERT_EQ(stats.f_type, VFS_TYPE_MINFS); |
| ASSERT_NE(stats.f_fsid.__val[0] | stats.f_fsid.__val[1], 0); |
| ASSERT_EQ(stats.f_bsize, 8192u); |
| ASSERT_EQ(stats.f_namelen, 255u); |
| ASSERT_GT(stats.f_bavail, 0u); |
| ASSERT_GT(stats.f_ffree, 0u); |
| |
| ASSERT_EQ(umount(mount_path), ZX_OK); |
| ASSERT_EQ(ramdisk_destroy(ramdisk), 0); |
| ASSERT_EQ(unlink(mount_path), 0); |
| END_TEST; |
| } |
| |
| bool StatvfsTest() { |
| const char* mount_path = "/tmp/mount_unmount"; |
| |
| BEGIN_TEST; |
| ramdisk_client_t* ramdisk = nullptr; |
| ASSERT_EQ(ramdisk_create(512, 1 << 16, &ramdisk), ZX_OK); |
| const char* ramdisk_path = ramdisk_get_path(ramdisk); |
| ASSERT_EQ(mkfs(ramdisk_path, DISK_FORMAT_MINFS, launch_stdio_sync, &default_mkfs_options), |
| ZX_OK); |
| ASSERT_EQ(mkdir(mount_path, 0666), 0); |
| int fd = open(ramdisk_path, O_RDWR); |
| ASSERT_GT(fd, 0); |
| ASSERT_EQ(mount(fd, mount_path, DISK_FORMAT_MINFS, &default_mount_options, launch_stdio_async), |
| ZX_OK); |
| |
| struct statvfs stats; |
| int rc = statvfs("", &stats); |
| int err = errno; |
| ASSERT_EQ(rc, -1); |
| ASSERT_EQ(err, ENOENT); |
| |
| rc = statvfs(mount_path, &stats); |
| ASSERT_EQ(rc, 0); |
| |
| // Verify that at least some values make sense, without making the test too brittle. |
| ASSERT_NE(stats.f_fsid, 0); |
| ASSERT_EQ(stats.f_bsize, 8192u); |
| ASSERT_EQ(stats.f_frsize, 8192u); |
| ASSERT_EQ(stats.f_namemax, 255u); |
| ASSERT_GT(stats.f_bavail, 0u); |
| ASSERT_GT(stats.f_ffree, 0u); |
| ASSERT_GT(stats.f_favail, 0u); |
| |
| ASSERT_EQ(umount(mount_path), ZX_OK); |
| ASSERT_EQ(ramdisk_destroy(ramdisk), 0); |
| ASSERT_EQ(unlink(mount_path), 0); |
| END_TEST; |
| } |
| |
| bool GetPartitionSliceCount(const zx::unowned_channel& channel, size_t* out_count) { |
| BEGIN_HELPER; |
| |
| fuchsia_hardware_block_volume_VolumeInfo fvm_info; |
| zx_status_t status; |
| ASSERT_OK(fuchsia_hardware_block_volume_VolumeQuery(channel->get(), &status, &fvm_info)); |
| ASSERT_OK(status); |
| |
| size_t allocated_slices = 0; |
| uint64_t start_slices[1]; |
| start_slices[0] = 0; |
| while (start_slices[0] < fvm_info.vslice_count) { |
| fuchsia_hardware_block_volume_VsliceRange |
| ranges[fuchsia_hardware_block_volume_MAX_SLICE_REQUESTS]; |
| size_t actual_ranges_count; |
| ASSERT_OK(fuchsia_hardware_block_volume_VolumeQuerySlices( |
| channel->get(), start_slices, fbl::count_of(start_slices), &status, |
| ranges, &actual_ranges_count)); |
| ASSERT_OK(status); |
| ASSERT_EQ(1, actual_ranges_count); |
| start_slices[0] += ranges[0].count; |
| if (ranges[0].allocated) { |
| allocated_slices += ranges[0].count; |
| } |
| } |
| |
| *out_count = allocated_slices; |
| END_HELPER; |
| } |
| |
| // Reformat the partition using a number of slices and verify that there are as many slices as |
| // originally pre-allocated. |
| bool MkfsMinfsWithMinFvmSlices(fs_test_utils::Fixture* fixture) { |
| BEGIN_TEST; |
| mkfs_options_t options = default_mkfs_options; |
| size_t base_slices = 0; |
| ASSERT_OK( |
| mkfs(fixture->partition_path().c_str(), DISK_FORMAT_MINFS, launch_stdio_sync, |
| &default_mkfs_options)); |
| fbl::unique_fd partition_fd(open(fixture->partition_path().c_str(), O_RDONLY)); |
| ASSERT_TRUE(partition_fd); |
| fzl::UnownedFdioCaller caller(partition_fd.get()); |
| ASSERT_TRUE(GetPartitionSliceCount(zx::unowned_channel(caller.borrow_channel()), &base_slices)); |
| options.fvm_data_slices += 10; |
| |
| ASSERT_OK( |
| mkfs(fixture->partition_path().c_str(), DISK_FORMAT_MINFS, launch_stdio_sync, &options)); |
| size_t allocated_slices = 0; |
| ASSERT_TRUE(GetPartitionSliceCount(zx::unowned_channel(caller.borrow_channel()), |
| &allocated_slices)); |
| EXPECT_GE(allocated_slices, base_slices + 10); |
| |
| disk_format_t actual_format = detect_disk_format(partition_fd.get()); |
| ASSERT_EQ(actual_format, DISK_FORMAT_MINFS); |
| END_TEST; |
| } |
| |
| } // namespace |
| |
| BEGIN_TEST_CASE(fs_management_tests) |
| RUN_TEST_MEDIUM(MountUnmount) |
| RUN_TEST_MEDIUM(MountUnmountLargeBlock) |
| RUN_TEST_MEDIUM(MountMkdirUnmount) |
| RUN_TEST_MEDIUM(FmountFunmount) |
| RUN_TEST_MEDIUM(MountEvilMemfs) |
| RUN_TEST_MEDIUM(MountEvilMinfs) |
| RUN_TEST_MEDIUM(UmountTestEvil) |
| RUN_TEST_MEDIUM(DoubleMountRoot) |
| RUN_TEST_MEDIUM(MountRemount) |
| RUN_TEST_MEDIUM(MountFsck) |
| RUN_TEST_MEDIUM(MountGetDevice) |
| RUN_TEST_MEDIUM(MountReadonly) |
| RUN_TEST_MEDIUM(MountBlockReadonly) |
| RUN_TEST_MEDIUM(StatfsTest) |
| RUN_TEST_MEDIUM(StatvfsTest) |
| END_TEST_CASE(fs_management_tests) |
| |
| BEGIN_FS_TEST_CASE(fs_management_mkfs_tests, PartitionOverFvmWithRamdisk) |
| RUN_FS_TEST_F(MkfsMinfsWithMinFvmSlices) |
| END_FS_TEST_CASE(fs_management_mkfs_tests, PartitionOverFvmWithRamdisk) |
| |
| int main(int argc, char** argv) { |
| return fs_test_utils::RunWithMemFs( |
| [argc, argv]() { return unittest_run_all_tests(argc, argv) ? 0 : -1; }); |
| } |
