| /* SPDX-License-Identifier: LGPL-2.1+ */ |
| /*** |
| This file is part of systemd. |
| |
| Copyright 2015 Lennart Poettering |
| |
| systemd 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. |
| |
| systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>. |
| ***/ |
| |
| #include <getopt.h> |
| |
| #include "sd-event.h" |
| |
| #include "alloc-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 "machine-image.h" |
| #include "signal-util.h" |
| #include "string-util.h" |
| #include "verbs.h" |
| |
| static bool arg_force = false; |
| static bool arg_read_only = false; |
| static const char *arg_image_root = "/var/lib/machines"; |
| |
| static int interrupt_signal_handler(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) { |
| log_notice("Transfer aborted."); |
| sd_event_exit(sd_event_source_get_event(s), EINTR); |
| return 0; |
| } |
| |
| 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_(sd_event_unrefp) sd_event *event = NULL; |
| const char *path = NULL, *local = NULL; |
| _cleanup_free_ char *ll = NULL; |
| _cleanup_close_ int open_fd = -1; |
| int r, fd; |
| |
| if (argc >= 2) |
| path = argv[1]; |
| if (isempty(path) || streq(path, "-")) |
| path = NULL; |
| |
| if (argc >= 3) |
| local = argv[2]; |
| else if (path) |
| local = basename(path); |
| if (isempty(local) || streq(local, "-")) |
| local = NULL; |
| |
| if (local) { |
| r = tar_strip_suffixes(local, &ll); |
| if (r < 0) |
| return log_oom(); |
| |
| local = ll; |
| |
| if (!machine_name_is_valid(local)) { |
| log_error("Local image name '%s' is not valid.", local); |
| return -EINVAL; |
| } |
| |
| if (!arg_force) { |
| r = image_find(local, NULL); |
| if (r < 0) |
| return log_error_errno(r, "Failed to check whether image '%s' exists: %m", local); |
| else if (r > 0) { |
| log_error("Image '%s' already exists.", local); |
| return -EEXIST; |
| } |
| } |
| } else |
| local = "imported"; |
| |
| if (path) { |
| open_fd = open(path, O_RDONLY|O_CLOEXEC|O_NOCTTY); |
| if (open_fd < 0) |
| return log_error_errno(errno, "Failed to open tar image to import: %m"); |
| |
| fd = open_fd; |
| |
| log_info("Importing '%s', saving as '%s'.", path, local); |
| } else { |
| _cleanup_free_ char *pretty = NULL; |
| |
| fd = STDIN_FILENO; |
| |
| (void) readlink_malloc("/proc/self/fd/0", &pretty); |
| log_info("Importing '%s', saving as '%s'.", strna(pretty), local); |
| } |
| |
| r = sd_event_default(&event); |
| if (r < 0) |
| return log_error_errno(r, "Failed to allocate event loop: %m"); |
| |
| assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0); |
| (void) sd_event_add_signal(event, NULL, SIGTERM, interrupt_signal_handler, NULL); |
| (void) sd_event_add_signal(event, NULL, SIGINT, interrupt_signal_handler, NULL); |
| |
| 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, local, arg_force, arg_read_only); |
| 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_(sd_event_unrefp) sd_event *event = NULL; |
| const char *path = NULL, *local = NULL; |
| _cleanup_free_ char *ll = NULL; |
| _cleanup_close_ int open_fd = -1; |
| int r, fd; |
| |
| if (argc >= 2) |
| path = argv[1]; |
| if (isempty(path) || streq(path, "-")) |
| path = NULL; |
| |
| if (argc >= 3) |
| local = argv[2]; |
| else if (path) |
| local = basename(path); |
| if (isempty(local) || streq(local, "-")) |
| local = NULL; |
| |
| if (local) { |
| r = raw_strip_suffixes(local, &ll); |
| if (r < 0) |
| return log_oom(); |
| |
| local = ll; |
| |
| if (!machine_name_is_valid(local)) { |
| log_error("Local image name '%s' is not valid.", local); |
| return -EINVAL; |
| } |
| |
| if (!arg_force) { |
| r = image_find(local, NULL); |
| if (r < 0) |
| return log_error_errno(r, "Failed to check whether image '%s' exists: %m", local); |
| else if (r > 0) { |
| log_error("Image '%s' already exists.", local); |
| return -EEXIST; |
| } |
| } |
| } else |
| local = "imported"; |
| |
| if (path) { |
| open_fd = open(path, O_RDONLY|O_CLOEXEC|O_NOCTTY); |
| if (open_fd < 0) |
| return log_error_errno(errno, "Failed to open raw image to import: %m"); |
| |
| fd = open_fd; |
| |
| log_info("Importing '%s', saving as '%s'.", path, local); |
| } else { |
| _cleanup_free_ char *pretty = NULL; |
| |
| fd = STDIN_FILENO; |
| |
| (void) readlink_malloc("/proc/self/fd/0", &pretty); |
| log_info("Importing '%s', saving as '%s'.", pretty, local); |
| } |
| |
| r = sd_event_default(&event); |
| if (r < 0) |
| return log_error_errno(r, "Failed to allocate event loop: %m"); |
| |
| assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0); |
| (void) sd_event_add_signal(event, NULL, SIGTERM, interrupt_signal_handler, NULL); |
| (void) sd_event_add_signal(event, NULL, SIGINT, interrupt_signal_handler, NULL); |
| |
| 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, local, arg_force, arg_read_only); |
| 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("%s [OPTIONS...] {COMMAND} ...\n\n" |
| "Import container or virtual machine images.\n\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\n" |
| "Commands:\n" |
| " tar FILE [NAME] Import a TAR image\n" |
| " raw FILE [NAME] Import a RAW image\n", |
| program_invocation_short_name); |
| |
| return 0; |
| } |
| |
| static int parse_argv(int argc, char *argv[]) { |
| |
| enum { |
| ARG_VERSION = 0x100, |
| ARG_FORCE, |
| ARG_IMAGE_ROOT, |
| ARG_READ_ONLY, |
| }; |
| |
| 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 }, |
| {} |
| }; |
| |
| int 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_force = true; |
| break; |
| |
| case ARG_IMAGE_ROOT: |
| arg_image_root = optarg; |
| break; |
| |
| case ARG_READ_ONLY: |
| arg_read_only = true; |
| break; |
| |
| case '?': |
| return -EINVAL; |
| |
| default: |
| assert_not_reached("Unhandled option"); |
| } |
| |
| 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); |
| } |
| |
| int main(int argc, char *argv[]) { |
| int r; |
| |
| setlocale(LC_ALL, ""); |
| log_parse_environment(); |
| log_open(); |
| |
| r = parse_argv(argc, argv); |
| if (r <= 0) |
| goto finish; |
| |
| (void) ignore_signals(SIGPIPE, -1); |
| |
| r = import_main(argc, argv); |
| |
| finish: |
| return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; |
| } |