| /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
| |
| #include <getopt.h> |
| #include <locale.h> |
| |
| #include "sd-event.h" |
| #include "sd-id128.h" |
| |
| #include "alloc-util.h" |
| #include "build.h" |
| #include "discover-image.h" |
| #include "env-util.h" |
| #include "fd-util.h" |
| #include "fs-util.h" |
| #include "hostname-util.h" |
| #include "import-raw.h" |
| #include "import-tar.h" |
| #include "import-util.h" |
| #include "io-util.h" |
| #include "main-func.h" |
| #include "parse-argument.h" |
| #include "parse-util.h" |
| #include "signal-util.h" |
| #include "string-util.h" |
| #include "terminal-util.h" |
| #include "verbs.h" |
| |
| static const char *arg_image_root = "/var/lib/machines"; |
| static ImportFlags arg_import_flags = IMPORT_BTRFS_SUBVOL | IMPORT_BTRFS_QUOTA | IMPORT_CONVERT_QCOW2 | IMPORT_SYNC; |
| static uint64_t arg_offset = UINT64_MAX, arg_size_max = UINT64_MAX; |
| |
| static int normalize_local(const char *local, char **ret) { |
| _cleanup_free_ char *ll = NULL; |
| int r; |
| |
| assert(ret); |
| |
| if (arg_import_flags & IMPORT_DIRECT) { |
| |
| if (!local) |
| return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "No local path specified."); |
| |
| if (!path_is_absolute(local)) { |
| ll = path_join(arg_image_root, local); |
| if (!ll) |
| return log_oom(); |
| |
| local = ll; |
| } |
| |
| if (!path_is_valid(local)) |
| return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
| "Local path name '%s' is not valid.", local); |
| } else { |
| if (local) { |
| if (!hostname_is_valid(local, 0)) |
| return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
| "Local image name '%s' is not valid.", |
| local); |
| } else |
| local = "imported"; |
| |
| if (!FLAGS_SET(arg_import_flags, IMPORT_FORCE)) { |
| r = image_find(IMAGE_MACHINE, local, NULL, NULL); |
| if (r < 0) { |
| if (r != -ENOENT) |
| return log_error_errno(r, "Failed to check whether image '%s' exists: %m", local); |
| } else |
| return log_error_errno(SYNTHETIC_ERRNO(EEXIST), |
| "Image '%s' already exists.", |
| local); |
| } |
| } |
| |
| if (!ll) { |
| ll = strdup(local); |
| if (!ll) |
| return log_oom(); |
| } |
| |
| *ret = TAKE_PTR(ll); |
| return 0; |
| } |
| |
| static int open_source(const char *path, const char *local, int *ret_open_fd) { |
| _cleanup_close_ int open_fd = -EBADF; |
| int retval; |
| |
| assert(local); |
| assert(ret_open_fd); |
| |
| if (path) { |
| open_fd = open(path, O_RDONLY|O_CLOEXEC|O_NOCTTY); |
| if (open_fd < 0) |
| return log_error_errno(errno, "Failed to open source file '%s': %m", path); |
| |
| retval = open_fd; |
| |
| if (arg_offset != UINT64_MAX) |
| log_info("Importing '%s', saving at offset %" PRIu64 " in '%s'.", path, arg_offset, local); |
| else |
| log_info("Importing '%s', saving as '%s'.", path, local); |
| } else { |
| _cleanup_free_ char *pretty = NULL; |
| |
| retval = STDIN_FILENO; |
| |
| (void) fd_get_path(STDIN_FILENO, &pretty); |
| |
| if (arg_offset != UINT64_MAX) |
| log_info("Importing '%s', saving at offset %" PRIu64 " in '%s'.", strempty(pretty), arg_offset, local); |
| else |
| log_info("Importing '%s', saving as '%s'.", strempty(pretty), local); |
| } |
| |
| *ret_open_fd = TAKE_FD(open_fd); |
| return retval; |
| } |
| |
| static void on_tar_finished(TarImport *import, int error, void *userdata) { |
| sd_event *event = userdata; |
| assert(import); |
| |
| if (error == 0) |
| log_info("Operation completed successfully."); |
| |
| sd_event_exit(event, abs(error)); |
| } |
| |
| static int import_tar(int argc, char *argv[], void *userdata) { |
| _cleanup_(tar_import_unrefp) TarImport *import = NULL; |
| _cleanup_free_ char *ll = NULL, *normalized = NULL; |
| _cleanup_(sd_event_unrefp) sd_event *event = NULL; |
| const char *path = NULL, *local = NULL; |
| _cleanup_close_ int open_fd = -EBADF; |
| int r, fd; |
| |
| if (argc >= 2) |
| path = empty_or_dash_to_null(argv[1]); |
| |
| if (argc >= 3) |
| local = empty_or_dash_to_null(argv[2]); |
| else if (path) { |
| _cleanup_free_ char *l = NULL; |
| |
| r = path_extract_filename(path, &l); |
| if (r < 0) |
| return log_error_errno(r, "Failed to extract filename from path '%s': %m", path); |
| |
| r = tar_strip_suffixes(l, &ll); |
| if (r < 0) |
| return log_oom(); |
| |
| local = ll; |
| } |
| |
| r = normalize_local(local, &normalized); |
| if (r < 0) |
| return r; |
| |
| fd = open_source(path, normalized, &open_fd); |
| if (fd < 0) |
| return r; |
| |
| r = import_allocate_event_with_signals(&event); |
| if (r < 0) |
| return r; |
| |
| if (!FLAGS_SET(arg_import_flags, IMPORT_SYNC)) |
| log_info("File system synchronization on completion is off."); |
| |
| r = tar_import_new(&import, event, arg_image_root, on_tar_finished, event); |
| if (r < 0) |
| return log_error_errno(r, "Failed to allocate importer: %m"); |
| |
| r = tar_import_start( |
| import, |
| fd, |
| normalized, |
| arg_import_flags & IMPORT_FLAGS_MASK_TAR); |
| if (r < 0) |
| return log_error_errno(r, "Failed to import image: %m"); |
| |
| r = sd_event_loop(event); |
| if (r < 0) |
| return log_error_errno(r, "Failed to run event loop: %m"); |
| |
| log_info("Exiting."); |
| return -r; |
| } |
| |
| static void on_raw_finished(RawImport *import, int error, void *userdata) { |
| sd_event *event = userdata; |
| assert(import); |
| |
| if (error == 0) |
| log_info("Operation completed successfully."); |
| |
| sd_event_exit(event, abs(error)); |
| } |
| |
| static int import_raw(int argc, char *argv[], void *userdata) { |
| _cleanup_(raw_import_unrefp) RawImport *import = NULL; |
| _cleanup_free_ char *ll = NULL, *normalized = NULL; |
| _cleanup_(sd_event_unrefp) sd_event *event = NULL; |
| const char *path = NULL, *local = NULL; |
| _cleanup_close_ int open_fd = -EBADF; |
| int r, fd; |
| |
| if (argc >= 2) |
| path = empty_or_dash_to_null(argv[1]); |
| |
| if (argc >= 3) |
| local = empty_or_dash_to_null(argv[2]); |
| else if (path) { |
| _cleanup_free_ char *l = NULL; |
| |
| r = path_extract_filename(path, &l); |
| if (r < 0) |
| return log_error_errno(r, "Failed to extract filename from path '%s': %m", path); |
| |
| r = raw_strip_suffixes(l, &ll); |
| if (r < 0) |
| return log_oom(); |
| |
| local = ll; |
| } |
| |
| r = normalize_local(local, &normalized); |
| if (r < 0) |
| return r; |
| |
| fd = open_source(path, normalized, &open_fd); |
| if (fd < 0) |
| return fd; |
| |
| r = import_allocate_event_with_signals(&event); |
| if (r < 0) |
| return r; |
| |
| if (!FLAGS_SET(arg_import_flags, IMPORT_SYNC)) |
| log_info("File system synchronization on completion is off."); |
| |
| r = raw_import_new(&import, event, arg_image_root, on_raw_finished, event); |
| if (r < 0) |
| return log_error_errno(r, "Failed to allocate importer: %m"); |
| |
| r = raw_import_start( |
| import, |
| fd, |
| normalized, |
| arg_offset, |
| arg_size_max, |
| arg_import_flags & IMPORT_FLAGS_MASK_RAW); |
| if (r < 0) |
| return log_error_errno(r, "Failed to import image: %m"); |
| |
| r = sd_event_loop(event); |
| if (r < 0) |
| return log_error_errno(r, "Failed to run event loop: %m"); |
| |
| log_info("Exiting."); |
| return -r; |
| } |
| |
| static int help(int argc, char *argv[], void *userdata) { |
| |
| printf("%1$s [OPTIONS...] {COMMAND} ...\n" |
| "\n%4$sImport container or virtual machine images.%5$s\n" |
| "\n%2$sCommands:%3$s\n" |
| " tar FILE [NAME] Import a TAR image\n" |
| " raw FILE [NAME] Import a RAW image\n" |
| "\n%2$sOptions:%3$s\n" |
| " -h --help Show this help\n" |
| " --version Show package version\n" |
| " --force Force creation of image\n" |
| " --image-root=PATH Image root directory\n" |
| " --read-only Create a read-only image\n" |
| " --direct Import directly to specified file\n" |
| " --btrfs-subvol=BOOL Controls whether to create a btrfs subvolume\n" |
| " instead of a directory\n" |
| " --btrfs-quota=BOOL Controls whether to set up quota for btrfs\n" |
| " subvolume\n" |
| " --convert-qcow2=BOOL Controls whether to convert QCOW2 images to\n" |
| " regular disk images\n" |
| " --sync=BOOL Controls whether to sync() before completing\n" |
| " --offset=BYTES Offset to seek to in destination\n" |
| " --size-max=BYTES Maximum number of bytes to write to destination\n", |
| program_invocation_short_name, |
| ansi_underline(), |
| ansi_normal(), |
| ansi_highlight(), |
| ansi_normal()); |
| |
| return 0; |
| } |
| |
| static int parse_argv(int argc, char *argv[]) { |
| |
| enum { |
| ARG_VERSION = 0x100, |
| ARG_FORCE, |
| ARG_IMAGE_ROOT, |
| ARG_READ_ONLY, |
| ARG_DIRECT, |
| ARG_BTRFS_SUBVOL, |
| ARG_BTRFS_QUOTA, |
| ARG_CONVERT_QCOW2, |
| ARG_SYNC, |
| ARG_OFFSET, |
| ARG_SIZE_MAX, |
| }; |
| |
| static const struct option options[] = { |
| { "help", no_argument, NULL, 'h' }, |
| { "version", no_argument, NULL, ARG_VERSION }, |
| { "force", no_argument, NULL, ARG_FORCE }, |
| { "image-root", required_argument, NULL, ARG_IMAGE_ROOT }, |
| { "read-only", no_argument, NULL, ARG_READ_ONLY }, |
| { "direct", no_argument, NULL, ARG_DIRECT }, |
| { "btrfs-subvol", required_argument, NULL, ARG_BTRFS_SUBVOL }, |
| { "btrfs-quota", required_argument, NULL, ARG_BTRFS_QUOTA }, |
| { "convert-qcow2", required_argument, NULL, ARG_CONVERT_QCOW2 }, |
| { "sync", required_argument, NULL, ARG_SYNC }, |
| { "offset", required_argument, NULL, ARG_OFFSET }, |
| { "size-max", required_argument, NULL, ARG_SIZE_MAX }, |
| {} |
| }; |
| |
| int r, c; |
| |
| assert(argc >= 0); |
| assert(argv); |
| |
| while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) |
| |
| switch (c) { |
| |
| case 'h': |
| return help(0, NULL, NULL); |
| |
| case ARG_VERSION: |
| return version(); |
| |
| case ARG_FORCE: |
| arg_import_flags |= IMPORT_FORCE; |
| break; |
| |
| case ARG_IMAGE_ROOT: |
| arg_image_root = optarg; |
| break; |
| |
| case ARG_READ_ONLY: |
| arg_import_flags |= IMPORT_READ_ONLY; |
| break; |
| |
| case ARG_DIRECT: |
| arg_import_flags |= IMPORT_DIRECT; |
| break; |
| |
| case ARG_BTRFS_SUBVOL: |
| r = parse_boolean_argument("--btrfs-subvol=", optarg, NULL); |
| if (r < 0) |
| return r; |
| |
| SET_FLAG(arg_import_flags, IMPORT_BTRFS_SUBVOL, r); |
| break; |
| |
| case ARG_BTRFS_QUOTA: |
| r = parse_boolean_argument("--btrfs-quota=", optarg, NULL); |
| if (r < 0) |
| return r; |
| |
| SET_FLAG(arg_import_flags, IMPORT_BTRFS_QUOTA, r); |
| break; |
| |
| case ARG_CONVERT_QCOW2: |
| r = parse_boolean_argument("--convert-qcow2=", optarg, NULL); |
| if (r < 0) |
| return r; |
| |
| SET_FLAG(arg_import_flags, IMPORT_CONVERT_QCOW2, r); |
| break; |
| |
| case ARG_SYNC: |
| r = parse_boolean_argument("--sync=", optarg, NULL); |
| if (r < 0) |
| return r; |
| |
| SET_FLAG(arg_import_flags, IMPORT_SYNC, r); |
| break; |
| |
| case ARG_OFFSET: { |
| uint64_t u; |
| |
| r = safe_atou64(optarg, &u); |
| if (r < 0) |
| return log_error_errno(r, "Failed to parse --offset= argument: %s", optarg); |
| if (!FILE_SIZE_VALID(u)) |
| return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Argument to --offset= switch too large: %s", optarg); |
| |
| arg_offset = u; |
| break; |
| } |
| |
| case ARG_SIZE_MAX: { |
| uint64_t u; |
| |
| r = parse_size(optarg, 1024, &u); |
| if (r < 0) |
| return log_error_errno(r, "Failed to parse --size-max= argument: %s", optarg); |
| if (!FILE_SIZE_VALID(u)) |
| return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Argument to --size-max= switch too large: %s", optarg); |
| |
| arg_size_max = u; |
| break; |
| } |
| |
| case '?': |
| return -EINVAL; |
| |
| default: |
| assert_not_reached(); |
| } |
| |
| /* Make sure offset+size is still in the valid range if both set */ |
| if (arg_offset != UINT64_MAX && arg_size_max != UINT64_MAX && |
| ((arg_size_max > (UINT64_MAX - arg_offset)) || |
| !FILE_SIZE_VALID(arg_offset + arg_size_max))) |
| return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "File offset und maximum size out of range."); |
| |
| if (arg_offset != UINT64_MAX && !FLAGS_SET(arg_import_flags, IMPORT_DIRECT)) |
| return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "File offset only supported in --direct mode."); |
| |
| return 1; |
| } |
| |
| static int import_main(int argc, char *argv[]) { |
| static const Verb verbs[] = { |
| { "help", VERB_ANY, VERB_ANY, 0, help }, |
| { "tar", 2, 3, 0, import_tar }, |
| { "raw", 2, 3, 0, import_raw }, |
| {} |
| }; |
| |
| return dispatch_verb(argc, argv, verbs, NULL); |
| } |
| |
| static void parse_env(void) { |
| int r; |
| |
| /* Let's make these relatively low-level settings also controllable via env vars. User can then set |
| * them to systemd-import if they like to tweak behaviour */ |
| |
| r = getenv_bool("SYSTEMD_IMPORT_BTRFS_SUBVOL"); |
| if (r >= 0) |
| SET_FLAG(arg_import_flags, IMPORT_BTRFS_SUBVOL, r); |
| else if (r != -ENXIO) |
| log_warning_errno(r, "Failed to parse $SYSTEMD_IMPORT_BTRFS_SUBVOL: %m"); |
| |
| r = getenv_bool("SYSTEMD_IMPORT_BTRFS_QUOTA"); |
| if (r >= 0) |
| SET_FLAG(arg_import_flags, IMPORT_BTRFS_QUOTA, r); |
| else if (r != -ENXIO) |
| log_warning_errno(r, "Failed to parse $SYSTEMD_IMPORT_BTRFS_QUOTA: %m"); |
| |
| r = getenv_bool("SYSTEMD_IMPORT_SYNC"); |
| if (r >= 0) |
| SET_FLAG(arg_import_flags, IMPORT_SYNC, r); |
| else if (r != -ENXIO) |
| log_warning_errno(r, "Failed to parse $SYSTEMD_IMPORT_SYNC: %m"); |
| } |
| |
| static int run(int argc, char *argv[]) { |
| int r; |
| |
| setlocale(LC_ALL, ""); |
| log_parse_environment(); |
| log_open(); |
| |
| parse_env(); |
| |
| r = parse_argv(argc, argv); |
| if (r <= 0) |
| return r; |
| |
| (void) ignore_signals(SIGPIPE); |
| |
| return import_main(argc, argv); |
| } |
| |
| DEFINE_MAIN_FUNCTION(run); |
