diff options
Diffstat (limited to 'src/import/pull-tar.c')
| -rw-r--r-- | src/import/pull-tar.c | 563 |
1 files changed, 0 insertions, 563 deletions
diff --git a/src/import/pull-tar.c b/src/import/pull-tar.c deleted file mode 100644 index 8c61c46f73..0000000000 --- a/src/import/pull-tar.c +++ /dev/null @@ -1,563 +0,0 @@ -/*** - 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 <curl/curl.h> -#include <sys/prctl.h> - -#include "sd-daemon.h" - -#include "alloc-util.h" -#include "btrfs-util.h" -#include "copy.h" -#include "curl-util.h" -#include "fd-util.h" -#include "fileio.h" -#include "fs-util.h" -#include "hostname-util.h" -#include "import-common.h" -#include "import-util.h" -#include "macro.h" -#include "mkdir.h" -#include "path-util.h" -#include "process-util.h" -#include "pull-common.h" -#include "pull-job.h" -#include "pull-tar.h" -#include "rm-rf.h" -#include "string-util.h" -#include "strv.h" -#include "utf8.h" -#include "util.h" -#include "web-util.h" - -typedef enum TarProgress { - TAR_DOWNLOADING, - TAR_VERIFYING, - TAR_FINALIZING, - TAR_COPYING, -} TarProgress; - -struct TarPull { - sd_event *event; - CurlGlue *glue; - - char *image_root; - - PullJob *tar_job; - PullJob *settings_job; - PullJob *checksum_job; - PullJob *signature_job; - - TarPullFinished on_finished; - void *userdata; - - char *local; - bool force_local; - bool grow_machine_directory; - bool settings; - - pid_t tar_pid; - - char *final_path; - char *temp_path; - - char *settings_path; - char *settings_temp_path; - - ImportVerify verify; -}; - -TarPull* tar_pull_unref(TarPull *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); - } - - pull_job_unref(i->tar_job); - pull_job_unref(i->settings_job); - pull_job_unref(i->checksum_job); - pull_job_unref(i->signature_job); - - curl_glue_unref(i->glue); - sd_event_unref(i->event); - - if (i->temp_path) { - (void) rm_rf(i->temp_path, REMOVE_ROOT|REMOVE_PHYSICAL|REMOVE_SUBVOLUME); - free(i->temp_path); - } - - if (i->settings_temp_path) { - (void) unlink(i->settings_temp_path); - free(i->settings_temp_path); - } - - free(i->final_path); - free(i->settings_path); - free(i->image_root); - free(i->local); - free(i); - - return NULL; -} - -int tar_pull_new( - TarPull **ret, - sd_event *event, - const char *image_root, - TarPullFinished on_finished, - void *userdata) { - - _cleanup_(tar_pull_unrefp) TarPull *i = NULL; - int r; - - assert(ret); - - i = new0(TarPull, 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 = pull_job_curl_on_finished; - i->glue->userdata = i; - - *ret = i; - i = NULL; - - return 0; -} - -static void tar_pull_report_progress(TarPull *i, TarProgress p) { - unsigned percent; - - assert(i); - - switch (p) { - - case TAR_DOWNLOADING: { - unsigned remain = 85; - - percent = 0; - - if (i->settings_job) { - percent += i->settings_job->progress_percent * 5 / 100; - remain -= 5; - } - - 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_pull_make_local_copy(TarPull *i) { - int r; - - assert(i); - assert(i->tar_job); - - if (!i->local) - return 0; - - if (!i->final_path) { - r = pull_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 = pull_make_local_copy(i->final_path, i->image_root, i->local, i->force_local); - if (r < 0) - return r; - - if (i->settings) { - const char *local_settings; - assert(i->settings_job); - - if (!i->settings_path) { - r = pull_make_path(i->settings_job->url, i->settings_job->etag, i->image_root, ".settings-", NULL, &i->settings_path); - if (r < 0) - return log_oom(); - } - - local_settings = strjoina(i->image_root, "/", i->local, ".nspawn"); - - r = copy_file_atomic(i->settings_path, local_settings, 0664, i->force_local, 0); - if (r == -EEXIST) - log_warning_errno(r, "Settings file %s already exists, not replacing.", local_settings); - else if (r == -ENOENT) - log_debug_errno(r, "Skipping creation of settings file, since none was found."); - else if (r < 0) - log_warning_errno(r, "Failed to copy settings files %s, ignoring: %m", local_settings); - else - log_info("Created new settings file %s.", local_settings); - } - - return 0; -} - -static bool tar_pull_is_done(TarPull *i) { - assert(i); - assert(i->tar_job); - - if (!PULL_JOB_IS_COMPLETE(i->tar_job)) - return false; - if (i->settings_job && !PULL_JOB_IS_COMPLETE(i->settings_job)) - return false; - if (i->checksum_job && !PULL_JOB_IS_COMPLETE(i->checksum_job)) - return false; - if (i->signature_job && !PULL_JOB_IS_COMPLETE(i->signature_job)) - return false; - - return true; -} - -static void tar_pull_job_on_finished(PullJob *j) { - TarPull *i; - int r; - - assert(j); - assert(j->userdata); - - i = j->userdata; - - if (j == i->settings_job) { - if (j->error != 0) - log_info_errno(j->error, "Settings file could not be retrieved, proceeding without."); - } else 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_pull_is_done(i)) - return; - - i->tar_job->disk_fd = safe_close(i->tar_job->disk_fd); - if (i->settings_job) - i->settings_job->disk_fd = safe_close(i->settings_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 (r > 0) { - r = -EIO; - goto finish; - } - } - - if (!i->tar_job->etag_exists) { - /* This is a new download, verify it, and move it into place */ - - tar_pull_report_progress(i, TAR_VERIFYING); - - r = pull_verify(i->tar_job, i->settings_job, i->checksum_job, i->signature_job); - if (r < 0) - goto finish; - - tar_pull_report_progress(i, TAR_FINALIZING); - - r = import_make_read_only(i->temp_path); - if (r < 0) - goto finish; - - r = rename_noreplace(AT_FDCWD, i->temp_path, AT_FDCWD, i->final_path); - if (r < 0) { - log_error_errno(r, "Failed to rename to final image name: %m"); - goto finish; - } - - i->temp_path = mfree(i->temp_path); - - if (i->settings_job && - i->settings_job->error == 0 && - !i->settings_job->etag_exists) { - - assert(i->settings_temp_path); - assert(i->settings_path); - - /* Also move the settings file into place, if - * it exist. Note that we do so only if we - * also moved the tar file in place, to keep - * things strictly in sync. */ - - r = import_make_read_only(i->settings_temp_path); - if (r < 0) - goto finish; - - r = rename_noreplace(AT_FDCWD, i->settings_temp_path, AT_FDCWD, i->settings_path); - if (r < 0) { - log_error_errno(r, "Failed to rename settings file: %m"); - goto finish; - } - - i->settings_temp_path = mfree(i->settings_temp_path); - } - } - - tar_pull_report_progress(i, TAR_COPYING); - - r = tar_pull_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_pull_job_on_open_disk_tar(PullJob *j) { - TarPull *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 = pull_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, NULL, &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(r, "Failed to create subvolume %s: %m", i->temp_path); - else - (void) import_assign_pool_quota_and_warn(i->temp_path); - - j->disk_fd = import_fork_tar_x(i->temp_path, &i->tar_pid); - if (j->disk_fd < 0) - return j->disk_fd; - - return 0; -} - -static int tar_pull_job_on_open_disk_settings(PullJob *j) { - TarPull *i; - int r; - - assert(j); - assert(j->userdata); - - i = j->userdata; - assert(i->settings_job == j); - assert(!i->settings_path); - assert(!i->settings_temp_path); - - r = pull_make_path(j->url, j->etag, i->image_root, ".settings-", NULL, &i->settings_path); - if (r < 0) - return log_oom(); - - r = tempfn_random(i->settings_path, NULL, &i->settings_temp_path); - if (r < 0) - return log_oom(); - - mkdir_parents_label(i->settings_temp_path, 0700); - - j->disk_fd = open(i->settings_temp_path, O_RDWR|O_CREAT|O_EXCL|O_NOCTTY|O_CLOEXEC, 0664); - if (j->disk_fd < 0) - return log_error_errno(errno, "Failed to create %s: %m", i->settings_temp_path); - - return 0; -} - -static void tar_pull_job_on_progress(PullJob *j) { - TarPull *i; - - assert(j); - assert(j->userdata); - - i = j->userdata; - - tar_pull_report_progress(i, TAR_DOWNLOADING); -} - -int tar_pull_start( - TarPull *i, - const char *url, - const char *local, - bool force_local, - ImportVerify verify, - bool settings) { - - int r; - - assert(i); - assert(verify < _IMPORT_VERIFY_MAX); - assert(verify >= 0); - - 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; - i->settings = settings; - - /* Set up download job for TAR file */ - r = pull_job_new(&i->tar_job, url, i->glue, i); - if (r < 0) - return r; - - i->tar_job->on_finished = tar_pull_job_on_finished; - i->tar_job->on_open_disk = tar_pull_job_on_open_disk_tar; - i->tar_job->on_progress = tar_pull_job_on_progress; - i->tar_job->calc_checksum = verify != IMPORT_VERIFY_NO; - i->tar_job->grow_machine_directory = i->grow_machine_directory; - - r = pull_find_old_etags(url, i->image_root, DT_DIR, ".tar-", NULL, &i->tar_job->old_etags); - if (r < 0) - return r; - - /* Set up download job for the settings file (.nspawn) */ - if (settings) { - r = pull_make_settings_job(&i->settings_job, url, i->glue, tar_pull_job_on_finished, i); - if (r < 0) - return r; - - i->settings_job->on_open_disk = tar_pull_job_on_open_disk_settings; - i->settings_job->on_progress = tar_pull_job_on_progress; - i->settings_job->calc_checksum = verify != IMPORT_VERIFY_NO; - - r = pull_find_old_etags(i->settings_job->url, i->image_root, DT_REG, ".settings-", NULL, &i->settings_job->old_etags); - if (r < 0) - return r; - } - - /* Set up download of checksum/signature files */ - r = pull_make_verification_jobs(&i->checksum_job, &i->signature_job, verify, url, i->glue, tar_pull_job_on_finished, i); - if (r < 0) - return r; - - r = pull_job_begin(i->tar_job); - if (r < 0) - return r; - - if (i->settings_job) { - r = pull_job_begin(i->settings_job); - if (r < 0) - return r; - } - - if (i->checksum_job) { - i->checksum_job->on_progress = tar_pull_job_on_progress; - - r = pull_job_begin(i->checksum_job); - if (r < 0) - return r; - } - - if (i->signature_job) { - i->signature_job->on_progress = tar_pull_job_on_progress; - - r = pull_job_begin(i->signature_job); - if (r < 0) - return r; - } - - return 0; -} |