From 7ad5d6bf5d7fcc61eace7e933b305f69d439fcc9 Mon Sep 17 00:00:00 2001 From: Luke Shumaker Date: Wed, 10 May 2017 15:51:29 -0400 Subject: ./tools/notsd-move --- src/import/import-raw.c | 465 ------------------------------------------------ 1 file changed, 465 deletions(-) delete mode 100644 src/import/import-raw.c (limited to 'src/import/import-raw.c') diff --git a/src/import/import-raw.c b/src/import/import-raw.c deleted file mode 100644 index 29f3f896e5..0000000000 --- a/src/import/import-raw.c +++ /dev/null @@ -1,465 +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 . -***/ - -#include - -#include "sd-daemon.h" -#include "sd-event.h" - -#include "alloc-util.h" -#include "btrfs-util.h" -#include "chattr-util.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-raw.h" -#include "io-util.h" -#include "machine-pool.h" -#include "mkdir.h" -#include "path-util.h" -#include "qcow2-util.h" -#include "ratelimit.h" -#include "rm-rf.h" -#include "string-util.h" -#include "util.h" - -struct RawImport { - sd_event *event; - - char *image_root; - - RawImportFinished 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 output_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; - - unsigned last_percent; - RateLimit progress_rate_limit; -}; - -RawImport* raw_import_unref(RawImport *i) { - if (!i) - return NULL; - - sd_event_unref(i->event); - - if (i->temp_path) { - (void) unlink(i->temp_path); - free(i->temp_path); - } - - import_compress_free(&i->compress); - - sd_event_source_unref(i->input_event_source); - - safe_close(i->output_fd); - - free(i->final_path); - free(i->image_root); - free(i->local); - return mfree(i); -} - -int raw_import_new( - RawImport **ret, - sd_event *event, - const char *image_root, - RawImportFinished on_finished, - void *userdata) { - - _cleanup_(raw_import_unrefp) RawImport *i = NULL; - int r; - - assert(ret); - - i = new0(RawImport, 1); - if (!i) - return -ENOMEM; - - i->input_fd = i->output_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 { - r = sd_event_default(&i->event); - if (r < 0) - return r; - } - - *ret = i; - i = NULL; - - return 0; -} - -static void raw_import_report_progress(RawImport *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; - - if (!ratelimit_test(&i->progress_rate_limit)) - return; - - sd_notifyf(false, "X_IMPORT_PROGRESS=%u", percent); - log_info("Imported %u%%.", percent); - - i->last_percent = percent; -} - -static int raw_import_maybe_convert_qcow2(RawImport *i) { - _cleanup_close_ int converted_fd = -1; - _cleanup_free_ char *t = NULL; - int r; - - assert(i); - - r = qcow2_detect(i->output_fd); - if (r < 0) - return log_error_errno(r, "Failed to detect whether this is a QCOW2 image: %m"); - if (r == 0) - return 0; - - /* This is a QCOW2 image, let's convert it */ - r = tempfn_random(i->final_path, NULL, &t); - if (r < 0) - return log_oom(); - - converted_fd = open(t, O_RDWR|O_CREAT|O_EXCL|O_NOCTTY|O_CLOEXEC, 0664); - if (converted_fd < 0) - return log_error_errno(errno, "Failed to create %s: %m", t); - - r = chattr_fd(converted_fd, FS_NOCOW_FL, FS_NOCOW_FL); - if (r < 0) - log_warning_errno(r, "Failed to set file attributes on %s: %m", t); - - log_info("Unpacking QCOW2 file."); - - r = qcow2_convert(i->output_fd, converted_fd); - if (r < 0) { - unlink(t); - return log_error_errno(r, "Failed to convert qcow2 image: %m"); - } - - (void) unlink(i->temp_path); - free(i->temp_path); - i->temp_path = t; - t = NULL; - - safe_close(i->output_fd); - i->output_fd = converted_fd; - converted_fd = -1; - - return 1; -} - -static int raw_import_finish(RawImport *i) { - int r; - - assert(i); - assert(i->output_fd >= 0); - assert(i->temp_path); - assert(i->final_path); - - /* In case this was a sparse file, make sure the file system is right */ - if (i->written_uncompressed > 0) { - if (ftruncate(i->output_fd, i->written_uncompressed) < 0) - return log_error_errno(errno, "Failed to truncate file: %m"); - } - - r = raw_import_maybe_convert_qcow2(i); - if (r < 0) - return r; - - if (S_ISREG(i->st.st_mode)) { - (void) copy_times(i->input_fd, i->output_fd); - (void) copy_xattr(i->input_fd, i->output_fd); - } - - if (i->read_only) { - r = import_make_read_only_fd(i->output_fd); - if (r < 0) - return r; - } - - 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) - return log_error_errno(r, "Failed to move image into place: %m"); - - i->temp_path = mfree(i->temp_path); - - return 0; -} - -static int raw_import_open_disk(RawImport *i) { - int r; - - assert(i); - - assert(!i->final_path); - assert(!i->temp_path); - assert(i->output_fd < 0); - - i->final_path = strjoin(i->image_root, "/", i->local, ".raw", NULL); - if (!i->final_path) - return log_oom(); - - r = tempfn_random(i->final_path, NULL, &i->temp_path); - if (r < 0) - return log_oom(); - - (void) mkdir_parents_label(i->temp_path, 0700); - - i->output_fd = open(i->temp_path, O_RDWR|O_CREAT|O_EXCL|O_NOCTTY|O_CLOEXEC, 0664); - if (i->output_fd < 0) - return log_error_errno(errno, "Failed to open destination %s: %m", i->temp_path); - - r = chattr_fd(i->output_fd, FS_NOCOW_FL, FS_NOCOW_FL); - if (r < 0) - log_warning_errno(r, "Failed to set file attributes on %s: %m", i->temp_path); - - return 0; -} - -static int raw_import_try_reflink(RawImport *i) { - off_t p; - int r; - - assert(i); - assert(i->input_fd >= 0); - assert(i->output_fd >= 0); - - if (i->compress.type != IMPORT_COMPRESS_UNCOMPRESSED) - return 0; - - if (!S_ISREG(i->st.st_mode)) - return 0; - - p = lseek(i->input_fd, 0, SEEK_CUR); - if (p == (off_t) -1) - return log_error_errno(errno, "Failed to read file offset of input file: %m"); - - /* Let's only try a btrfs reflink, if we are reading from the beginning of the file */ - if ((uint64_t) p != (uint64_t) i->buffer_size) - return 0; - - r = btrfs_reflink(i->input_fd, i->output_fd); - if (r >= 0) - return 1; - - return 0; -} - -static int raw_import_write(const void *p, size_t sz, void *userdata) { - RawImport *i = userdata; - ssize_t n; - - if (i->grow_machine_directory && i->written_since_last_grow >= GROW_INTERVAL_BYTES) { - i->written_since_last_grow = 0; - grow_machine_directory(); - } - - n = sparse_write(i->output_fd, p, sz, 64); - if (n < 0) - return -errno; - if ((size_t) n < sz) - return -EIO; - - i->written_uncompressed += sz; - i->written_since_last_grow += sz; - - return 0; -} - -static int raw_import_process(RawImport *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) { - if (errno == EAGAIN) - return 0; - - 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: %m"); - r = -EIO; - goto finish; - } - - r = raw_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) { - log_error("Failed to detect file compression: %m"); - goto finish; - } - if (r == 0) /* Need more data */ - return 0; - - r = raw_import_open_disk(i); - if (r < 0) - goto finish; - - r = raw_import_try_reflink(i); - if (r < 0) - goto finish; - if (r > 0) { - r = raw_import_finish(i); - goto finish; - } - } - - r = import_uncompress(&i->compress, i->buffer, i->buffer_size, raw_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; - - raw_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 raw_import_on_input(sd_event_source *s, int fd, uint32_t revents, void *userdata) { - RawImport *i = userdata; - - return raw_import_process(i); -} - -static int raw_import_on_defer(sd_event_source *s, void *userdata) { - RawImport *i = userdata; - - return raw_import_process(i); -} - -int raw_import_start(RawImport *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 = 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, raw_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, raw_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; -} -- cgit v1.2.3-54-g00ecf