2017-11-18 17:09:20 +01:00
|
|
|
/* SPDX-License-Identifier: LGPL-2.1+ */
|
2015-03-05 00:56:08 +01:00
|
|
|
|
|
|
|
#include <linux/fs.h>
|
|
|
|
|
|
|
|
#include "sd-daemon.h"
|
|
|
|
#include "sd-event.h"
|
2015-10-24 22:58:24 +02:00
|
|
|
|
2015-10-27 03:01:06 +01:00
|
|
|
#include "alloc-util.h"
|
2015-03-05 00:56:08 +01:00
|
|
|
#include "btrfs-util.h"
|
|
|
|
#include "copy.h"
|
2015-10-25 13:14:12 +01:00
|
|
|
#include "fd-util.h"
|
2015-10-26 18:05:03 +01:00
|
|
|
#include "fileio.h"
|
2015-10-26 21:16:26 +01:00
|
|
|
#include "fs-util.h"
|
2015-10-24 22:58:24 +02:00
|
|
|
#include "hostname-util.h"
|
|
|
|
#include "import-common.h"
|
|
|
|
#include "import-compress.h"
|
2015-10-25 13:14:12 +01:00
|
|
|
#include "import-tar.h"
|
2015-10-25 14:08:25 +01:00
|
|
|
#include "io-util.h"
|
2015-03-05 00:56:08 +01:00
|
|
|
#include "machine-pool.h"
|
2015-10-24 22:58:24 +02:00
|
|
|
#include "mkdir.h"
|
|
|
|
#include "path-util.h"
|
|
|
|
#include "process-util.h"
|
2015-03-05 00:56:08 +01:00
|
|
|
#include "qcow2-util.h"
|
2015-10-24 22:58:24 +02:00
|
|
|
#include "ratelimit.h"
|
|
|
|
#include "rm-rf.h"
|
|
|
|
#include "string-util.h"
|
|
|
|
#include "util.h"
|
2015-03-05 00:56:08 +01:00
|
|
|
|
|
|
|
struct TarImport {
|
|
|
|
sd_event *event;
|
|
|
|
|
|
|
|
char *image_root;
|
|
|
|
|
|
|
|
TarImportFinished on_finished;
|
|
|
|
void *userdata;
|
|
|
|
|
|
|
|
char *local;
|
|
|
|
bool force_local;
|
|
|
|
bool read_only;
|
|
|
|
bool grow_machine_directory;
|
|
|
|
|
|
|
|
char *temp_path;
|
|
|
|
char *final_path;
|
|
|
|
|
|
|
|
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;
|
|
|
|
|
2015-03-09 17:55:07 +01:00
|
|
|
sd_event_source_unref(i->input_event_source);
|
2015-03-05 00:56:08 +01:00
|
|
|
|
|
|
|
if (i->tar_pid > 1) {
|
|
|
|
(void) kill_and_sigcont(i->tar_pid, SIGKILL);
|
|
|
|
(void) wait_for_terminate(i->tar_pid, NULL);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (i->temp_path) {
|
2015-04-06 10:57:17 +02:00
|
|
|
(void) rm_rf(i->temp_path, REMOVE_ROOT|REMOVE_PHYSICAL|REMOVE_SUBVOLUME);
|
2015-03-05 00:56:08 +01:00
|
|
|
free(i->temp_path);
|
|
|
|
}
|
|
|
|
|
|
|
|
import_compress_free(&i->compress);
|
|
|
|
|
2015-03-09 17:55:07 +01:00
|
|
|
sd_event_unref(i->event);
|
2015-03-05 00:56:08 +01:00
|
|
|
|
|
|
|
safe_close(i->tar_fd);
|
|
|
|
|
|
|
|
free(i->final_path);
|
|
|
|
free(i->image_root);
|
|
|
|
free(i->local);
|
2016-10-17 00:28:30 +02:00
|
|
|
return mfree(i);
|
2015-03-05 00:56:08 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
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);
|
|
|
|
|
|
|
|
i = new0(TarImport, 1);
|
|
|
|
if (!i)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
i->input_fd = i->tar_fd = -1;
|
|
|
|
i->on_finished = on_finished;
|
|
|
|
i->userdata = userdata;
|
|
|
|
|
2015-03-09 17:55:07 +01:00
|
|
|
RATELIMIT_INIT(i->progress_rate_limit, 100 * USEC_PER_MSEC, 1);
|
2015-03-05 00:56:08 +01:00
|
|
|
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 {
|
|
|
|
r = sd_event_default(&i->event);
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
2018-04-05 07:26:26 +02:00
|
|
|
*ret = TAKE_PTR(i);
|
2015-03-05 00:56:08 +01:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void tar_import_report_progress(TarImport *i) {
|
|
|
|
unsigned percent;
|
|
|
|
assert(i);
|
|
|
|
|
|
|
|
/* We have no size information, unless the source is a regular file */
|
|
|
|
if (!S_ISREG(i->st.st_mode))
|
|
|
|
return;
|
|
|
|
|
|
|
|
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);
|
|
|
|
|
|
|
|
if (percent == i->last_percent)
|
|
|
|
return;
|
|
|
|
|
2018-05-11 11:16:52 +02:00
|
|
|
if (!ratelimit_below(&i->progress_rate_limit))
|
2015-03-05 00:56:08 +01:00
|
|
|
return;
|
|
|
|
|
|
|
|
sd_notifyf(false, "X_IMPORT_PROGRESS=%u", percent);
|
|
|
|
log_info("Imported %u%%.", percent);
|
|
|
|
|
|
|
|
i->last_percent = percent;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int tar_import_finish(TarImport *i) {
|
|
|
|
int r;
|
|
|
|
|
|
|
|
assert(i);
|
|
|
|
assert(i->tar_fd >= 0);
|
|
|
|
assert(i->temp_path);
|
|
|
|
assert(i->final_path);
|
|
|
|
|
|
|
|
i->tar_fd = safe_close(i->tar_fd);
|
|
|
|
|
|
|
|
if (i->tar_pid > 0) {
|
2017-12-28 00:51:19 +01:00
|
|
|
r = wait_for_terminate_and_check("tar", i->tar_pid, WAIT_LOG);
|
2015-03-05 00:56:08 +01:00
|
|
|
i->tar_pid = 0;
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (i->read_only) {
|
|
|
|
r = import_make_read_only(i->temp_path);
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
2015-04-06 10:57:17 +02:00
|
|
|
if (i->force_local)
|
|
|
|
(void) rm_rf(i->final_path, REMOVE_ROOT|REMOVE_PHYSICAL|REMOVE_SUBVOLUME);
|
2015-03-05 00:56:08 +01:00
|
|
|
|
2015-03-10 18:15:52 +01:00
|
|
|
r = rename_noreplace(AT_FDCWD, i->temp_path, AT_FDCWD, i->final_path);
|
|
|
|
if (r < 0)
|
|
|
|
return log_error_errno(r, "Failed to move image into place: %m");
|
2015-03-05 00:56:08 +01:00
|
|
|
|
2015-09-08 18:43:11 +02:00
|
|
|
i->temp_path = mfree(i->temp_path);
|
2015-03-05 00:56:08 +01:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int tar_import_fork_tar(TarImport *i) {
|
|
|
|
int r;
|
|
|
|
|
|
|
|
assert(i);
|
|
|
|
|
|
|
|
assert(!i->final_path);
|
|
|
|
assert(!i->temp_path);
|
|
|
|
assert(i->tar_fd < 0);
|
|
|
|
|
2016-10-23 17:43:27 +02:00
|
|
|
i->final_path = strjoin(i->image_root, "/", i->local);
|
2015-03-05 00:56:08 +01:00
|
|
|
if (!i->final_path)
|
|
|
|
return log_oom();
|
|
|
|
|
2015-06-15 19:09:02 +02:00
|
|
|
r = tempfn_random(i->final_path, NULL, &i->temp_path);
|
2015-03-05 00:56:08 +01:00
|
|
|
if (r < 0)
|
|
|
|
return log_oom();
|
|
|
|
|
|
|
|
(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)
|
2015-11-05 13:44:06 +01:00
|
|
|
return log_error_errno(r, "Failed to create subvolume %s: %m", i->temp_path);
|
2015-10-21 19:45:44 +02:00
|
|
|
else
|
|
|
|
(void) import_assign_pool_quota_and_warn(i->temp_path);
|
2015-03-05 00:56:08 +01:00
|
|
|
|
2015-03-09 17:55:07 +01:00
|
|
|
i->tar_fd = import_fork_tar_x(i->temp_path, &i->tar_pid);
|
2015-03-05 00:56:08 +01:00
|
|
|
if (i->tar_fd < 0)
|
|
|
|
return i->tar_fd;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
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));
|
|
|
|
|
|
|
|
l = read(i->input_fd, i->buffer + i->buffer_size, sizeof(i->buffer) - i->buffer_size);
|
|
|
|
if (l < 0) {
|
2015-03-09 17:55:07 +01:00
|
|
|
if (errno == EAGAIN)
|
|
|
|
return 0;
|
|
|
|
|
2015-03-05 00:56:08 +01:00
|
|
|
r = log_error_errno(errno, "Failed to read input file: %m");
|
|
|
|
goto finish;
|
|
|
|
}
|
|
|
|
if (l == 0) {
|
|
|
|
if (i->compress.type == IMPORT_COMPRESS_UNKNOWN) {
|
2017-05-13 17:24:37 +02:00
|
|
|
log_error("Premature end of file.");
|
2015-03-05 00:56:08 +01:00
|
|
|
r = -EIO;
|
|
|
|
goto finish;
|
|
|
|
}
|
|
|
|
|
|
|
|
r = tar_import_finish(i);
|
|
|
|
goto finish;
|
|
|
|
}
|
|
|
|
|
|
|
|
i->buffer_size += l;
|
|
|
|
|
|
|
|
if (i->compress.type == IMPORT_COMPRESS_UNKNOWN) {
|
|
|
|
r = import_uncompress_detect(&i->compress, i->buffer, i->buffer_size);
|
|
|
|
if (r < 0) {
|
2017-05-13 17:24:37 +02:00
|
|
|
log_error_errno(r, "Failed to detect file compression: %m");
|
2015-03-05 00:56:08 +01:00
|
|
|
goto finish;
|
|
|
|
}
|
|
|
|
if (r == 0) /* Need more data */
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
r = tar_import_fork_tar(i);
|
|
|
|
if (r < 0)
|
|
|
|
goto finish;
|
|
|
|
}
|
|
|
|
|
|
|
|
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;
|
|
|
|
|
|
|
|
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;
|
|
|
|
|
2015-03-09 17:55:07 +01:00
|
|
|
r = fd_nonblock(fd, true);
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
|
|
|
|
2015-03-05 00:56:08 +01:00
|
|
|
r = free_and_strdup(&i->local, local);
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
|
|
|
i->force_local = force_local;
|
|
|
|
i->read_only = read_only;
|
|
|
|
|
|
|
|
if (fstat(fd, &i->st) < 0)
|
|
|
|
return -errno;
|
|
|
|
|
|
|
|
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;
|
|
|
|
|
|
|
|
i->input_fd = fd;
|
|
|
|
return r;
|
|
|
|
}
|