-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
+/* SPDX-License-Identifier: LGPL-2.1+ */
/***
This file is part of systemd.
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
-#include <sys/prctl.h>
-#include <curl/curl.h>
+#include <linux/fs.h>
-#include "utf8.h"
-#include "strv.h"
-#include "copy.h"
+#include "sd-daemon.h"
+#include "sd-event.h"
+
+#include "alloc-util.h"
#include "btrfs-util.h"
-#include "util.h"
-#include "macro.h"
-#include "mkdir.h"
-#include "import-util.h"
-#include "curl-util.h"
-#include "import-job.h"
+#include "copy.h"
+#include "fd-util.h"
+#include "fileio.h"
+#include "fs-util.h"
+#include "hostname-util.h"
#include "import-common.h"
+#include "import-compress.h"
#include "import-tar.h"
+#include "io-util.h"
+#include "machine-pool.h"
+#include "mkdir.h"
+#include "path-util.h"
+#include "process-util.h"
+#include "qcow2-util.h"
+#include "ratelimit.h"
+#include "rm-rf.h"
+#include "string-util.h"
+#include "util.h"
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;
-
- pid_t tar_pid;
+ bool read_only;
+ bool grow_machine_directory;
char *temp_path;
char *final_path;
- ImportVerify verify;
+ int input_fd;
+ int tar_fd;
+
+ ImportCompress compress;
+
+ uint64_t written_since_last_grow;
+
+ sd_event_source *input_event_source;
+
+ uint8_t buffer[16*1024];
+ size_t buffer_size;
+
+ uint64_t written_compressed;
+ uint64_t written_uncompressed;
+
+ struct stat st;
+
+ pid_t tar_pid;
+
+ unsigned last_percent;
+ RateLimit progress_rate_limit;
};
TarImport* tar_import_unref(TarImport *i) {
if (!i)
return NULL;
+ sd_event_source_unref(i->input_event_source);
+
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);
+ (void) rm_rf(i->temp_path, REMOVE_ROOT|REMOVE_PHYSICAL|REMOVE_SUBVOLUME);
free(i->temp_path);
}
+ import_compress_free(&i->compress);
+
+ sd_event_unref(i->event);
+
+ safe_close(i->tar_fd);
+
free(i->final_path);
free(i->image_root);
free(i->local);
- free(i);
-
- return NULL;
+ return mfree(i);
}
int tar_import_new(
int r;
assert(ret);
- assert(event);
i = new0(TarImport, 1);
if (!i)
return -ENOMEM;
+ i->input_fd = i->tar_fd = -1;
i->on_finished = on_finished;
i->userdata = userdata;
+ RATELIMIT_INIT(i->progress_rate_limit, 100 * USEC_PER_MSEC, 1);
+ i->last_percent = (unsigned) -1;
+
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 {
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 int tar_import_make_local_copy(TarImport *i) {
- int r;
-
+static void tar_import_report_progress(TarImport *i) {
+ unsigned percent;
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();
- }
+ /* We have no size information, unless the source is a regular file */
+ if (!S_ISREG(i->st.st_mode))
+ return;
- r = import_make_local_copy(i->final_path, i->image_root, i->local, i->force_local);
- if (r < 0)
- return r;
+ if (i->written_compressed >= (uint64_t) i->st.st_size)
+ percent = 100;
+ else
+ percent = (unsigned) ((i->written_compressed * UINT64_C(100)) / (uint64_t) i->st.st_size);
- return 0;
-}
+ if (percent == i->last_percent)
+ return;
-static bool tar_import_is_done(TarImport *i) {
- assert(i);
- assert(i->tar_job);
+ if (!ratelimit_test(&i->progress_rate_limit))
+ return;
- 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;
+ sd_notifyf(false, "X_IMPORT_PROGRESS=%u", percent);
+ log_info("Imported %u%%.", percent);
- return true;
+ i->last_percent = percent;
}
-static void tar_import_job_on_finished(ImportJob *j) {
- TarImport *i;
+static int tar_import_finish(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;
+ assert(i);
+ assert(i->tar_fd >= 0);
+ assert(i->temp_path);
+ assert(i->final_path);
- j->disk_fd = safe_close(i->tar_job->disk_fd);
+ i->tar_fd = safe_close(i->tar_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;
+ return r;
}
- if (!i->tar_job->etag_exists) {
- /* This is a new download, verify it, and move it into place */
-
- r = import_verify(i->tar_job, i->checksum_job, i->signature_job);
- if (r < 0)
- goto finish;
-
+ if (i->read_only) {
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;
+ return r;
}
- r = tar_import_make_local_copy(i);
+ if (i->force_local)
+ (void) rm_rf(i->final_path, REMOVE_ROOT|REMOVE_PHYSICAL|REMOVE_SUBVOLUME);
+
+ r = rename_noreplace(AT_FDCWD, i->temp_path, AT_FDCWD, i->final_path);
if (r < 0)
- goto finish;
+ return log_error_errno(r, "Failed to move image into place: %m");
- r = 0;
+ i->temp_path = mfree(i->temp_path);
-finish:
- if (i->on_finished)
- i->on_finished(i, r, i->userdata);
- else
- sd_event_exit(i->event, r);
+ return 0;
}
-static int tar_import_job_on_open_disk(ImportJob *j) {
- _cleanup_close_pair_ int pipefd[2] = { -1 , -1 };
- TarImport *i;
+static int tar_import_fork_tar(TarImport *i) {
int r;
- assert(j);
- assert(j->userdata);
+ assert(i);
- i = j->userdata;
- assert(i->tar_job == j);
assert(!i->final_path);
assert(!i->temp_path);
- assert(i->tar_pid <= 0);
+ assert(i->tar_fd < 0);
- r = import_make_path(j->url, j->etag, i->image_root, ".tar-", NULL, &i->final_path);
- if (r < 0)
+ i->final_path = strjoin(i->image_root, "/", i->local);
+ if (!i->final_path)
return log_oom();
- r = tempfn_random(i->final_path, &i->temp_path);
+ r = tempfn_random(i->final_path, NULL, &i->temp_path);
if (r < 0)
return log_oom();
- mkdir_parents_label(i->temp_path, 0700);
+ (void) 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);
+ 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(i->temp_path, &i->tar_pid);
- if (j->disk_fd < 0)
- return j->disk_fd;
+ i->tar_fd = import_fork_tar_x(i->temp_path, &i->tar_pid);
+ if (i->tar_fd < 0)
+ return i->tar_fd;
return 0;
}
-int tar_import_pull(TarImport *i, const char *url, const char *local, bool force_local, ImportVerify verify) {
+static int tar_import_write(const void *p, size_t sz, void *userdata) {
+ TarImport *i = userdata;
+ int r;
+
+ if (i->grow_machine_directory && i->written_since_last_grow >= GROW_INTERVAL_BYTES) {
+ i->written_since_last_grow = 0;
+ grow_machine_directory();
+ }
+
+ r = loop_write(i->tar_fd, p, sz, false);
+ if (r < 0)
+ return r;
+
+ i->written_uncompressed += sz;
+ i->written_since_last_grow += sz;
+
+ return 0;
+}
+
+static int tar_import_process(TarImport *i) {
+ ssize_t l;
int r;
assert(i);
+ assert(i->buffer_size < sizeof(i->buffer));
- if (!http_url_is_valid(url))
- return -EINVAL;
+ l = read(i->input_fd, i->buffer + i->buffer_size, sizeof(i->buffer) - i->buffer_size);
+ if (l < 0) {
+ if (errno == EAGAIN)
+ return 0;
- if (local && !machine_name_is_valid(local))
- return -EINVAL;
+ r = log_error_errno(errno, "Failed to read input file: %m");
+ goto finish;
+ }
+ if (l == 0) {
+ if (i->compress.type == IMPORT_COMPRESS_UNKNOWN) {
+ log_error("Premature end of file.");
+ r = -EIO;
+ goto finish;
+ }
- if (i->tar_job)
- return -EBUSY;
+ r = tar_import_finish(i);
+ goto finish;
+ }
- r = free_and_strdup(&i->local, local);
- if (r < 0)
- return r;
- i->force_local = force_local;
- i->verify = verify;
+ i->buffer_size += l;
- r = import_job_new(&i->tar_job, url, i->glue, i);
- if (r < 0)
- return r;
+ if (i->compress.type == IMPORT_COMPRESS_UNKNOWN) {
+ r = import_uncompress_detect(&i->compress, i->buffer, i->buffer_size);
+ if (r < 0) {
+ log_error_errno(r, "Failed to detect file compression: %m");
+ goto finish;
+ }
+ if (r == 0) /* Need more data */
+ return 0;
- 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->calc_checksum = verify != IMPORT_VERIFY_NO;
+ r = tar_import_fork_tar(i);
+ if (r < 0)
+ goto finish;
+ }
- 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_uncompress(&i->compress, i->buffer, i->buffer_size, tar_import_write, i);
+ if (r < 0) {
+ log_error_errno(r, "Failed to decode and write: %m");
+ goto finish;
+ }
+
+ i->written_compressed += i->buffer_size;
+ i->buffer_size = 0;
+
+ tar_import_report_progress(i);
+
+ return 0;
+
+finish:
+ if (i->on_finished)
+ i->on_finished(i, r, i->userdata);
+ else
+ sd_event_exit(i->event, r);
+
+ return 0;
+}
+
+static int tar_import_on_input(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
+ TarImport *i = userdata;
+
+ return tar_import_process(i);
+}
+
+static int tar_import_on_defer(sd_event_source *s, void *userdata) {
+ TarImport *i = userdata;
- r = import_make_verification_jobs(&i->checksum_job, &i->signature_job, verify, url, i->glue, tar_import_job_on_finished, i);
+ return tar_import_process(i);
+}
+
+int tar_import_start(TarImport *i, int fd, const char *local, bool force_local, bool read_only) {
+ int r;
+
+ assert(i);
+ assert(fd >= 0);
+ assert(local);
+
+ if (!machine_name_is_valid(local))
+ return -EINVAL;
+
+ if (i->input_fd >= 0)
+ return -EBUSY;
+
+ r = fd_nonblock(fd, true);
if (r < 0)
return r;
- r = import_job_begin(i->tar_job);
+ r = free_and_strdup(&i->local, local);
if (r < 0)
return r;
+ i->force_local = force_local;
+ i->read_only = read_only;
- if (i->checksum_job) {
- r = import_job_begin(i->checksum_job);
- if (r < 0)
- return r;
- }
+ if (fstat(fd, &i->st) < 0)
+ return -errno;
- if (i->signature_job) {
- r = import_job_begin(i->signature_job);
+ r = sd_event_add_io(i->event, &i->input_event_source, fd, EPOLLIN, tar_import_on_input, i);
+ if (r == -EPERM) {
+ /* This fd does not support epoll, for example because it is a regular file. Busy read in that case */
+ r = sd_event_add_defer(i->event, &i->input_event_source, tar_import_on_defer, i);
if (r < 0)
return r;
+
+ r = sd_event_source_set_enabled(i->input_event_source, SD_EVENT_ON);
}
+ if (r < 0)
+ return r;
- return 0;
+ i->input_fd = fd;
+ return r;
}
projects / thirdparty / systemd.git / blobdiff