+++ /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 <sys/prctl.h>
-#include <curl/curl.h>
-
-#include "sd-daemon.h"
-#include "utf8.h"
-#include "strv.h"
-#include "copy.h"
-#include "btrfs-util.h"
-#include "util.h"
-#include "macro.h"
-#include "mkdir.h"
-#include "path-util.h"
-#include "import-util.h"
-#include "curl-util.h"
-#include "import-job.h"
-#include "import-common.h"
-#include "import-tar.h"
-
-typedef enum TarProgress {
- TAR_DOWNLOADING,
- TAR_VERIFYING,
- TAR_FINALIZING,
- TAR_COPYING,
-} TarProgress;
-
-struct TarImport {
- sd_event *event;
- CurlGlue *glue;
-
- char *image_root;
-
- ImportJob *tar_job;
- ImportJob *checksum_job;
- ImportJob *signature_job;
-
- TarImportFinished on_finished;
- void *userdata;
-
- char *local;
- bool force_local;
- bool grow_machine_directory;
-
- pid_t tar_pid;
-
- char *temp_path;
- char *final_path;
-
- ImportVerify verify;
-};
-
-TarImport* tar_import_unref(TarImport *i) {
- if (!i)
- return NULL;
-
- if (i->tar_pid > 1) {
- (void) kill_and_sigcont(i->tar_pid, SIGKILL);
- (void) wait_for_terminate(i->tar_pid, NULL);
- }
-
- import_job_unref(i->tar_job);
- import_job_unref(i->checksum_job);
- import_job_unref(i->signature_job);
-
- curl_glue_unref(i->glue);
- sd_event_unref(i->event);
-
- if (i->temp_path) {
- (void) btrfs_subvol_remove(i->temp_path);
- (void) rm_rf_dangerous(i->temp_path, false, true, false);
- free(i->temp_path);
- }
-
- free(i->final_path);
- free(i->image_root);
- free(i->local);
- free(i);
-
- return NULL;
-}
-
-int tar_import_new(
- TarImport **ret,
- sd_event *event,
- const char *image_root,
- TarImportFinished on_finished,
- void *userdata) {
-
- _cleanup_(tar_import_unrefp) TarImport *i = NULL;
- int r;
-
- assert(ret);
- assert(event);
-
- i = new0(TarImport, 1);
- if (!i)
- return -ENOMEM;
-
- i->on_finished = on_finished;
- i->userdata = userdata;
-
- i->image_root = strdup(image_root ?: "/var/lib/machines");
- if (!i->image_root)
- return -ENOMEM;
-
- i->grow_machine_directory = path_startswith(i->image_root, "/var/lib/machines");
-
- if (event)
- i->event = sd_event_ref(event);
- else {
- r = sd_event_default(&i->event);
- if (r < 0)
- return r;
- }
-
- r = curl_glue_new(&i->glue, i->event);
- if (r < 0)
- return r;
-
- i->glue->on_finished = import_job_curl_on_finished;
- i->glue->userdata = i;
-
- *ret = i;
- i = NULL;
-
- return 0;
-}
-
-static void tar_import_report_progress(TarImport *i, TarProgress p) {
- unsigned percent;
-
- assert(i);
-
- switch (p) {
-
- case TAR_DOWNLOADING: {
- unsigned remain = 85;
-
- percent = 0;
-
- if (i->checksum_job) {
- percent += i->checksum_job->progress_percent * 5 / 100;
- remain -= 5;
- }
-
- if (i->signature_job) {
- percent += i->signature_job->progress_percent * 5 / 100;
- remain -= 5;
- }
-
- if (i->tar_job)
- percent += i->tar_job->progress_percent * remain / 100;
- break;
- }
-
- case TAR_VERIFYING:
- percent = 85;
- break;
-
- case TAR_FINALIZING:
- percent = 90;
- break;
-
- case TAR_COPYING:
- percent = 95;
- break;
-
- default:
- assert_not_reached("Unknown progress state");
- }
-
- sd_notifyf(false, "X_IMPORT_PROGRESS=%u", percent);
- log_debug("Combined progress %u%%", percent);
-}
-
-static int tar_import_make_local_copy(TarImport *i) {
- int r;
-
- assert(i);
- assert(i->tar_job);
-
- if (!i->local)
- return 0;
-
- if (!i->final_path) {
- r = import_make_path(i->tar_job->url, i->tar_job->etag, i->image_root, ".tar-", NULL, &i->final_path);
- if (r < 0)
- return log_oom();
- }
-
- r = import_make_local_copy(i->final_path, i->image_root, i->local, i->force_local);
- if (r < 0)
- return r;
-
- return 0;
-}
-
-static bool tar_import_is_done(TarImport *i) {
- assert(i);
- assert(i->tar_job);
-
- if (i->tar_job->state != IMPORT_JOB_DONE)
- return false;
- if (i->checksum_job && i->checksum_job->state != IMPORT_JOB_DONE)
- return false;
- if (i->signature_job && i->signature_job->state != IMPORT_JOB_DONE)
- return false;
-
- return true;
-}
-
-static void tar_import_job_on_finished(ImportJob *j) {
- TarImport *i;
- int r;
-
- assert(j);
- assert(j->userdata);
-
- i = j->userdata;
- if (j->error != 0) {
- if (j == i->checksum_job)
- log_error_errno(j->error, "Failed to retrieve SHA256 checksum, cannot verify. (Try --verify=no?)");
- else if (j == i->signature_job)
- log_error_errno(j->error, "Failed to retrieve signature file, cannot verify. (Try --verify=no?)");
- else
- log_error_errno(j->error, "Failed to retrieve image file. (Wrong URL?)");
-
- r = j->error;
- goto finish;
- }
-
- /* This is invoked if either the download completed
- * successfully, or the download was skipped because we
- * already have the etag. */
-
- if (!tar_import_is_done(i))
- return;
-
- j->disk_fd = safe_close(i->tar_job->disk_fd);
-
- if (i->tar_pid > 0) {
- r = wait_for_terminate_and_warn("tar", i->tar_pid, true);
- i->tar_pid = 0;
- if (r < 0)
- goto finish;
- }
-
- if (!i->tar_job->etag_exists) {
- /* This is a new download, verify it, and move it into place */
-
- tar_import_report_progress(i, TAR_VERIFYING);
-
- r = import_verify(i->tar_job, i->checksum_job, i->signature_job);
- if (r < 0)
- goto finish;
-
- tar_import_report_progress(i, TAR_FINALIZING);
-
- r = import_make_read_only(i->temp_path);
- if (r < 0)
- goto finish;
-
- if (rename(i->temp_path, i->final_path) < 0) {
- r = log_error_errno(errno, "Failed to rename to final image name: %m");
- goto finish;
- }
-
- free(i->temp_path);
- i->temp_path = NULL;
- }
-
- tar_import_report_progress(i, TAR_COPYING);
-
- r = tar_import_make_local_copy(i);
- if (r < 0)
- goto finish;
-
- r = 0;
-
-finish:
- if (i->on_finished)
- i->on_finished(i, r, i->userdata);
- else
- sd_event_exit(i->event, r);
-}
-
-static int tar_import_job_on_open_disk(ImportJob *j) {
- TarImport *i;
- int r;
-
- assert(j);
- assert(j->userdata);
-
- i = j->userdata;
- assert(i->tar_job == j);
- assert(!i->final_path);
- assert(!i->temp_path);
- assert(i->tar_pid <= 0);
-
- r = import_make_path(j->url, j->etag, i->image_root, ".tar-", NULL, &i->final_path);
- if (r < 0)
- return log_oom();
-
- r = tempfn_random(i->final_path, &i->temp_path);
- if (r < 0)
- return log_oom();
-
- mkdir_parents_label(i->temp_path, 0700);
-
- r = btrfs_subvol_make(i->temp_path);
- if (r == -ENOTTY) {
- if (mkdir(i->temp_path, 0755) < 0)
- return log_error_errno(errno, "Failed to create directory %s: %m", i->temp_path);
- } else if (r < 0)
- return log_error_errno(errno, "Failed to create subvolume %s: %m", i->temp_path);
-
- j->disk_fd = import_fork_tar(i->temp_path, &i->tar_pid);
- if (j->disk_fd < 0)
- return j->disk_fd;
-
- return 0;
-}
-
-static void tar_import_job_on_progress(ImportJob *j) {
- TarImport *i;
-
- assert(j);
- assert(j->userdata);
-
- i = j->userdata;
-
- tar_import_report_progress(i, TAR_DOWNLOADING);
-}
-
-int tar_import_pull(TarImport *i, const char *url, const char *local, bool force_local, ImportVerify verify) {
- int r;
-
- assert(i);
-
- if (!http_url_is_valid(url))
- return -EINVAL;
-
- if (local && !machine_name_is_valid(local))
- return -EINVAL;
-
- if (i->tar_job)
- return -EBUSY;
-
- r = free_and_strdup(&i->local, local);
- if (r < 0)
- return r;
- i->force_local = force_local;
- i->verify = verify;
-
- r = import_job_new(&i->tar_job, url, i->glue, i);
- if (r < 0)
- return r;
-
- i->tar_job->on_finished = tar_import_job_on_finished;
- i->tar_job->on_open_disk = tar_import_job_on_open_disk;
- i->tar_job->on_progress = tar_import_job_on_progress;
- i->tar_job->calc_checksum = verify != IMPORT_VERIFY_NO;
- i->tar_job->grow_machine_directory = i->grow_machine_directory;
-
- r = import_find_old_etags(url, i->image_root, DT_DIR, ".tar-", NULL, &i->tar_job->old_etags);
- if (r < 0)
- return r;
-
- r = import_make_verification_jobs(&i->checksum_job, &i->signature_job, verify, url, i->glue, tar_import_job_on_finished, i);
- if (r < 0)
- return r;
-
- r = import_job_begin(i->tar_job);
- if (r < 0)
- return r;
-
- if (i->checksum_job) {
- i->checksum_job->on_progress = tar_import_job_on_progress;
-
- r = import_job_begin(i->checksum_job);
- if (r < 0)
- return r;
- }
-
- if (i->signature_job) {
- i->signature_job->on_progress = tar_import_job_on_progress;
-
- r = import_job_begin(i->signature_job);
- if (r < 0)
- return r;
- }
-
- return 0;
-}
~ianmdlvl / elogind.git / blobdiff