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-rw-r--r--src/grp-machine/grp-import/systemd-import/import.c338
1 files changed, 338 insertions, 0 deletions
diff --git a/src/grp-machine/grp-import/systemd-import/import.c b/src/grp-machine/grp-import/systemd-import/import.c
new file mode 100644
index 0000000000..d6f772a159
--- /dev/null
+++ b/src/grp-machine/grp-import/systemd-import/import.c
@@ -0,0 +1,338 @@
+/***
+ 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 <systemd/sd-event.h>
+
+#include "systemd-basic/alloc-util.h"
+#include "systemd-basic/fd-util.h"
+#include "systemd-basic/fs-util.h"
+#include "systemd-basic/hostname-util.h"
+#include "systemd-basic/signal-util.h"
+#include "systemd-basic/string-util.h"
+#include "systemd-basic/verbs.h"
+#include "systemd-shared/import-util.h"
+#include "systemd-shared/machine-image.h"
+
+#include "import-raw.h"
+#include "import-tar.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;
+}
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