2 Copyright (C) 2019-2020 Carl Hetherington <cth@carlh.net>
4 This file is part of DCP-o-matic.
6 DCP-o-matic is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 DCP-o-matic is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
21 #include "lib/disk_writer_messages.h"
22 #include "lib/compose.hpp"
23 #include "lib/exceptions.h"
24 #include "lib/cross.h"
25 #include "lib/digester.h"
26 #include "lib/file_log.h"
27 #include "lib/dcpomatic_log.h"
28 #include "lib/nanomsg.h"
30 #include <lwext4/ext4_mbr.h>
31 #include <lwext4/ext4_fs.h>
32 #include <lwext4/ext4_mkfs.h>
33 #include <lwext4/ext4_errno.h>
34 #include <lwext4/ext4_debug.h>
35 #include <lwext4/ext4.h>
38 #ifdef DCPOMATIC_POSIX
39 #include <sys/ioctl.h>
40 #include <sys/types.h>
47 #include <lwext4/file_dev.h>
51 #ifdef DCPOMATIC_LINUX
53 #include <polkit/polkit.h>
55 #include <lwext4/file_dev.h>
60 #ifdef DCPOMATIC_WINDOWS
62 #include <lwext4/file_windows.h>
68 #include <sys/types.h>
69 #include <boost/filesystem.hpp>
75 using std::runtime_error;
77 using boost::optional;
79 #ifdef DCPOMATIC_LINUX
80 static PolkitAuthority* polkit_authority = 0;
82 static boost::filesystem::path dcp_path;
83 static std::string device;
84 static uint64_t const block_size = 4096;
85 static Nanomsg* nanomsg = 0;
89 count (boost::filesystem::path dir, uint64_t& total_bytes)
91 using namespace boost::filesystem;
92 for (directory_iterator i = directory_iterator(dir); i != directory_iterator(); ++i) {
93 if (is_directory(*i)) {
94 count (*i, total_bytes);
96 total_bytes += file_size (*i);
103 write (boost::filesystem::path from, boost::filesystem::path to, uint64_t& total_remaining, uint64_t total)
106 int r = ext4_fopen(&out, to.generic_string().c_str(), "wb");
108 throw CopyError (String::compose("Failed to open file %1", to.generic_string()), r);
111 FILE* in = fopen_boost (from, "rb");
114 throw CopyError (String::compose("Failed to open file %1", from.string()), 0);
117 uint8_t* buffer = new uint8_t[block_size];
120 uint64_t remaining = file_size (from);
121 while (remaining > 0) {
122 uint64_t const this_time = min(remaining, block_size);
123 size_t read = fread (buffer, 1, this_time, in);
124 if (read != this_time) {
128 throw CopyError (String::compose("Short read; expected %1 but read %2", this_time, read), 0);
131 digester.add (buffer, this_time);
134 r = ext4_fwrite (&out, buffer, this_time, &written);
139 throw CopyError ("Write failed", r);
141 if (written != this_time) {
145 throw CopyError (String::compose("Short write; expected %1 but wrote %2", this_time, written), 0);
147 remaining -= this_time;
148 total_remaining -= this_time;
149 nanomsg->blocking_send(String::compose(DISK_WRITER_PROGRESS "\n%1\n", (1 - float(total_remaining) / total)));
156 return digester.get ();
161 read (boost::filesystem::path from, boost::filesystem::path to, uint64_t& total_remaining, uint64_t total)
164 LOG_DISK("Opening %1 for read", to.generic_string());
165 int r = ext4_fopen(&in, to.generic_string().c_str(), "rb");
167 throw VerifyError (String::compose("Failed to open file %1", to.generic_string()), r);
169 LOG_DISK("Opened %1 for read", to.generic_string());
171 uint8_t* buffer = new uint8_t[block_size];
174 uint64_t remaining = file_size (from);
175 while (remaining > 0) {
176 uint64_t const this_time = min(remaining, block_size);
178 r = ext4_fread (&in, buffer, this_time, &read);
179 if (read != this_time) {
182 throw VerifyError (String::compose("Short read; expected %1 but read %2", this_time, read), 0);
185 digester.add (buffer, this_time);
186 remaining -= this_time;
187 total_remaining -= this_time;
188 nanomsg->blocking_send(String::compose(DISK_WRITER_PROGRESS "\n%1\n", (1 - float(total_remaining) / total)));
194 return digester.get ();
198 /** @param from File to copy from.
199 * @param to Directory to copy to.
203 copy (boost::filesystem::path from, boost::filesystem::path to, uint64_t& total_remaining, uint64_t total)
205 LOG_DISK ("Copy %1 -> %2", from.string(), to.generic_string());
207 using namespace boost::filesystem;
209 path const cr = to / from.filename();
211 if (is_directory(from)) {
212 int r = ext4_dir_mk (cr.generic_string().c_str());
214 throw CopyError (String::compose("Failed to create directory %1", cr.generic_string()), r);
217 for (directory_iterator i = directory_iterator(from); i != directory_iterator(); ++i) {
218 copy (i->path(), cr, total_remaining, total);
221 string const write_digest = write (from, cr, total_remaining, total);
222 LOG_DISK ("Wrote %1 %2 with %3", from.string(), cr.generic_string(), write_digest);
223 string const read_digest = read (from, cr, total_remaining, total);
224 LOG_DISK ("Read %1 %2 with %3", from.string(), cr.generic_string(), write_digest);
225 if (write_digest != read_digest) {
226 throw VerifyError ("Hash of written data is incorrect", 0);
236 // ext4_dmask_set (DEBUG_ALL);
238 /* We rely on static initialization for these */
239 static struct ext4_fs fs;
240 static struct ext4_mkfs_info info;
241 info.block_size = 1024;
242 info.inode_size = 128;
243 info.journal = false;
246 file_windows_name_set(device.c_str());
247 struct ext4_blockdev* bd = file_windows_dev_get();
249 file_dev_name_set (device.c_str());
250 struct ext4_blockdev* bd = file_dev_get ();
254 throw CopyError ("Failed to open drive", 0);
256 LOG_DISK_NC ("Opened drive");
258 struct ext4_mbr_parts parts;
259 parts.division[0] = 100;
260 parts.division[1] = 0;
261 parts.division[2] = 0;
262 parts.division[3] = 0;
264 #ifdef DCPOMATIC_LINUX
265 PrivilegeEscalator e;
268 /* XXX: not sure if disk_id matters */
269 int r = ext4_mbr_write (bd, &parts, 0);
272 throw CopyError ("Failed to write MBR", r);
274 LOG_DISK_NC ("Wrote MBR");
276 #ifdef DCPOMATIC_WINDOWS
277 struct ext4_mbr_bdevs bdevs;
278 r = ext4_mbr_scan (bd, &bdevs);
280 throw CopyError ("Failed to read MBR", r);
283 file_windows_partition_set (bdevs.partitions[0].part_offset, bdevs.partitions[0].part_size);
286 #ifdef DCPOMATIC_LINUX
287 /* Re-read the partition table */
288 int fd = open(device.c_str(), O_RDONLY);
289 ioctl(fd, BLKRRPART, NULL);
293 #ifdef DCPOMATIC_POSIX
294 string partition = device;
295 /* XXX: don't know if this logic is sensible */
296 if (partition.size() > 0 && isdigit(partition[partition.length() - 1])) {
301 file_dev_name_set (partition.c_str());
302 bd = file_dev_get ();
306 throw CopyError ("Failed to open partition", 0);
308 LOG_DISK_NC ("Opened partition");
310 nanomsg->blocking_send(DISK_WRITER_FORMATTING "\n");
312 r = ext4_mkfs(&fs, bd, &info, F_SET_EXT4);
314 throw CopyError ("Failed to make filesystem", r);
316 LOG_DISK_NC ("Made filesystem");
318 r = ext4_device_register(bd, "ext4_fs");
320 throw CopyError ("Failed to register device", r);
322 LOG_DISK_NC ("Registered device");
324 r = ext4_mount("ext4_fs", "/mp/", false);
326 throw CopyError ("Failed to mount device", r);
328 LOG_DISK_NC ("Mounted device");
330 uint64_t total_bytes = 0;
331 count (dcp_path, total_bytes);
333 /* XXX: this is a hack. We are going to "treat" every byte twice; write it, and then verify it. Double the
334 * bytes totals so that progress works itself out (assuming write is the same speed as read).
337 copy (dcp_path, "/mp", total_bytes, total_bytes);
339 r = ext4_umount("/mp/");
341 throw CopyError ("Failed to unmount device", r);
344 nanomsg->blocking_send(DISK_WRITER_OK "\n");
345 } catch (CopyError& e) {
346 LOG_DISK("CopyError: %1 %2", e.message(), e.number());
347 nanomsg->blocking_send(String::compose(DISK_WRITER_ERROR "\n%1\n%2\n", e.message(), e.number()));
348 } catch (VerifyError& e) {
349 LOG_DISK("VerifyError: %1 %2", e.message(), e.number());
350 nanomsg->blocking_send(String::compose(DISK_WRITER_ERROR "\n%1\n%2\n", e.message(), e.number()));
351 } catch (exception& e) {
352 LOG_DISK("Exception: %1", e.what());
353 nanomsg->blocking_send(String::compose(DISK_WRITER_ERROR "\n%1\n0\n", e.what()));
356 #ifdef DCPOMATIC_LINUX
359 polkit_callback (GObject *, GAsyncResult* res, gpointer)
361 PolkitAuthorizationResult* result = polkit_authority_check_authorization_finish (polkit_authority, res, 0);
362 if (result && polkit_authorization_result_get_is_authorized(result)) {
366 g_object_unref (result);
374 optional<string> s = nanomsg->nonblocking_get ();
381 } else if (*s == "W") {
382 dcp_path = nanomsg->blocking_get();
383 device = nanomsg->blocking_get();
385 LOG_DISK ("Here we go writing %1 to %2", dcp_path, device);
387 #ifdef DCPOMATIC_LINUX
388 polkit_authority = polkit_authority_get_sync (0, 0);
389 PolkitSubject* subject = polkit_unix_process_new (getppid());
390 polkit_authority_check_authorization (
391 polkit_authority, subject, "com.dcpomatic.write-drive", 0, POLKIT_CHECK_AUTHORIZATION_FLAGS_ALLOW_USER_INTERACTION, 0, polkit_callback, 0
404 /* XXX: this is a hack, but I expect we'll need logs and I'm not sure if there's
405 * a better place to put them.
407 dcpomatic_log.reset(new FileLog(config_path() / "disk_writer.log"));
408 dcpomatic_log->set_types (dcpomatic_log->types() | LogEntry::TYPE_DISK);
409 LOG_DISK_NC("dcpomatic_disk_writer started");
412 nanomsg = new Nanomsg (false);
413 } catch (runtime_error& e) {
414 LOG_DISK_NC("Could not set up nanomsg socket");
418 Glib::RefPtr<Glib::MainLoop> ml = Glib::MainLoop::create ();
419 Glib::signal_timeout().connect(sigc::ptr_fun(&idle), 500);