+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- 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 "event-util.h"
-#include "verbs.h"
-#include "build.h"
-#include "machine-image.h"
-#include "import-util.h"
-#include "export-tar.h"
-#include "export-raw.h"
-
-static ImportCompressType arg_compress = IMPORT_COMPRESS_UNKNOWN;
-
-static void determine_compression_from_filename(const char *p) {
-
- if (arg_compress != IMPORT_COMPRESS_UNKNOWN)
- return;
-
- if (!p) {
- arg_compress = IMPORT_COMPRESS_UNCOMPRESSED;
- return;
- }
-
- if (endswith(p, ".xz"))
- arg_compress = IMPORT_COMPRESS_XZ;
- else if (endswith(p, ".gz"))
- arg_compress = IMPORT_COMPRESS_GZIP;
- else if (endswith(p, ".bz2"))
- arg_compress = IMPORT_COMPRESS_BZIP2;
- else
- arg_compress = IMPORT_COMPRESS_UNCOMPRESSED;
-}
-
-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(TarExport *export, int error, void *userdata) {
- sd_event *event = userdata;
- assert(export);
-
- if (error == 0)
- log_info("Operation completed successfully.");
-
- sd_event_exit(event, abs(error));
-}
-
-static int export_tar(int argc, char *argv[], void *userdata) {
- _cleanup_(tar_export_unrefp) TarExport *export = NULL;
- _cleanup_event_unref_ sd_event *event = NULL;
- _cleanup_(image_unrefp) Image *image = NULL;
- const char *path = NULL, *local = NULL;
- _cleanup_close_ int open_fd = -1;
- int r, fd;
-
- if (machine_name_is_valid(argv[1])) {
- r = image_find(argv[1], &image);
- if (r < 0)
- return log_error_errno(r, "Failed to look for machine %s: %m", argv[1]);
- if (r == 0) {
- log_error("Machine image %s not found.", argv[1]);
- return -ENOENT;
- }
-
- local = image->path;
- } else
- local = argv[1];
-
- if (argc >= 3)
- path = argv[2];
- if (isempty(path) || streq(path, "-"))
- path = NULL;
-
- determine_compression_from_filename(path);
-
- if (path) {
- open_fd = open(path, O_WRONLY|O_CREAT|O_TRUNC|O_CLOEXEC|O_NOCTTY, 0666);
- if (open_fd < 0)
- return log_error_errno(errno, "Failed to open tar image for export: %m");
-
- fd = open_fd;
-
- log_info("Exporting '%s', saving to '%s' with compression '%s'.", local, path, import_compress_type_to_string(arg_compress));
- } else {
- _cleanup_free_ char *pretty = NULL;
-
- fd = STDOUT_FILENO;
-
- (void) readlink_malloc("/proc/self/fd/1", &pretty);
- log_info("Exporting '%s', saving to '%s' with compression '%s'.", local, strna(pretty), import_compress_type_to_string(arg_compress));
- }
-
- 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, SIGTERM, SIGINT, -1) == 0);
- sd_event_add_signal(event, NULL, SIGTERM, interrupt_signal_handler, NULL);
- sd_event_add_signal(event, NULL, SIGINT, interrupt_signal_handler, NULL);
-
- r = tar_export_new(&export, event, on_tar_finished, event);
- if (r < 0)
- return log_error_errno(r, "Failed to allocate exporter: %m");
-
- r = tar_export_start(export, local, fd, arg_compress);
- if (r < 0)
- return log_error_errno(r, "Failed to export 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(RawExport *export, int error, void *userdata) {
- sd_event *event = userdata;
- assert(export);
-
- if (error == 0)
- log_info("Operation completed successfully.");
-
- sd_event_exit(event, abs(error));
-}
-
-static int export_raw(int argc, char *argv[], void *userdata) {
- _cleanup_(raw_export_unrefp) RawExport *export = NULL;
- _cleanup_event_unref_ sd_event *event = NULL;
- _cleanup_(image_unrefp) Image *image = NULL;
- const char *path = NULL, *local = NULL;
- _cleanup_close_ int open_fd = -1;
- int r, fd;
-
- if (machine_name_is_valid(argv[1])) {
- r = image_find(argv[1], &image);
- if (r < 0)
- return log_error_errno(r, "Failed to look for machine %s: %m", argv[1]);
- if (r == 0) {
- log_error("Machine image %s not found.", argv[1]);
- return -ENOENT;
- }
-
- local = image->path;
- } else
- local = argv[1];
-
- if (argc >= 3)
- path = argv[2];
- if (isempty(path) || streq(path, "-"))
- path = NULL;
-
- determine_compression_from_filename(path);
-
- if (path) {
- open_fd = open(path, O_WRONLY|O_CREAT|O_TRUNC|O_CLOEXEC|O_NOCTTY, 0666);
- if (open_fd < 0)
- return log_error_errno(errno, "Failed to open raw image for export: %m");
-
- fd = open_fd;
-
- log_info("Exporting '%s', saving to '%s' with compression '%s'.", local, path, import_compress_type_to_string(arg_compress));
- } else {
- _cleanup_free_ char *pretty = NULL;
-
- fd = STDOUT_FILENO;
-
- (void) readlink_malloc("/proc/self/fd/1", &pretty);
- log_info("Exporting '%s', saving to '%s' with compression '%s'.", local, strna(pretty), import_compress_type_to_string(arg_compress));
- }
-
- 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, SIGTERM, SIGINT, -1) == 0);
- sd_event_add_signal(event, NULL, SIGTERM, interrupt_signal_handler, NULL);
- sd_event_add_signal(event, NULL, SIGINT, interrupt_signal_handler, NULL);
-
- r = raw_export_new(&export, event, on_raw_finished, event);
- if (r < 0)
- return log_error_errno(r, "Failed to allocate exporter: %m");
-
- r = raw_export_start(export, local, fd, arg_compress);
- if (r < 0)
- return log_error_errno(r, "Failed to export 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"
- "Export container or virtual machine images.\n\n"
- " -h --help Show this help\n"
- " --version Show package version\n"
- " --format=FORMAT Select format\n\n"
- "Commands:\n"
- " tar NAME [FILE] Export a TAR image\n"
- " raw NAME [FILE] Export a RAW image\n",
- program_invocation_short_name);
-
- return 0;
-}
-
-static int parse_argv(int argc, char *argv[]) {
-
- enum {
- ARG_VERSION = 0x100,
- ARG_FORMAT,
- };
-
- static const struct option options[] = {
- { "help", no_argument, NULL, 'h' },
- { "version", no_argument, NULL, ARG_VERSION },
- { "format", required_argument, NULL, ARG_FORMAT },
- {}
- };
-
- 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:
- puts(PACKAGE_STRING);
- puts(SYSTEMD_FEATURES);
- return 0;
-
- case ARG_FORMAT:
- if (streq(optarg, "uncompressed"))
- arg_compress = IMPORT_COMPRESS_UNCOMPRESSED;
- else if (streq(optarg, "xz"))
- arg_compress = IMPORT_COMPRESS_XZ;
- else if (streq(optarg, "gzip"))
- arg_compress = IMPORT_COMPRESS_GZIP;
- else if (streq(optarg, "bzip2"))
- arg_compress = IMPORT_COMPRESS_BZIP2;
- else {
- log_error("Unknown format: %s", optarg);
- return -EINVAL;
- }
- break;
-
- case '?':
- return -EINVAL;
-
- default:
- assert_not_reached("Unhandled option");
- }
-
- return 1;
-}
-
-static int export_main(int argc, char *argv[]) {
-
- static const Verb verbs[] = {
- { "help", VERB_ANY, VERB_ANY, 0, help },
- { "tar", 2, 3, 0, export_tar },
- { "raw", 2, 3, 0, export_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;
-
- ignore_signals(SIGPIPE, -1);
-
- r = export_main(argc, argv);
-
-finish:
- return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
-}
~ianmdlvl / elogind.git / blobdiff