WIMLIB_EXTRACT_FLAG_NO_PRESERVE_DIR_STRUCTURE | \
WIMLIB_EXTRACT_FLAG_WIMBOOT)
+/* Send WIMLIB_PROGRESS_MSG_EXTRACT_FILE_STRUCTURE or
+ * WIMLIB_PROGRESS_MSG_EXTRACT_METADATA. */
+int
+do_file_extract_progress(struct apply_ctx *ctx, enum wimlib_progress_msg msg)
+{
+ ctx->count_until_file_progress = 512; /* Arbitrary value to limit calls */
+ return extract_progress(ctx, msg);
+}
+
/* Check whether the extraction of a dentry should be skipped completely. */
static bool
dentry_is_supported(struct wim_dentry *dentry,
if (ret)
goto read_error;
- if ((flags & PWM_ALLOW_WIM_HDR) && buf.stream_hdr.magic == PWM_MAGIC) {
+ if ((flags & PWM_ALLOW_WIM_HDR) &&
+ le64_to_cpu(buf.stream_hdr.magic) == PWM_MAGIC)
+ {
BUILD_BUG_ON(sizeof(buf.pwm_hdr) < sizeof(buf.stream_hdr));
ret = full_read(&pwm->in_fd, &buf.stream_hdr + 1,
sizeof(buf.pwm_hdr) - sizeof(buf.stream_hdr));
lte_unbind_wim_resource_spec(found_lte);
lte_bind_wim_resource_spec(needed_lte, rspec);
- ret = (*cbs->begin_stream)(needed_lte, 0,
+ ret = (*cbs->begin_stream)(needed_lte,
cbs->begin_stream_ctx);
if (ret) {
lte_unbind_wim_resource_spec(needed_lte);
}
ret = 0;
out:
- if (found_lte->resource_location != RESOURCE_IN_WIM)
+ if (found_lte && found_lte->resource_location != RESOURCE_IN_WIM)
FREE(rspec);
free_lookup_table_entry(found_lte);
return ret;
}
+/* Creates a temporary file opened for writing. The open file descriptor is
+ * returned in @fd_ret and its name is returned in @name_ret (dynamically
+ * allocated). */
static int
-begin_extract_stream_with_progress(struct wim_lookup_table_entry *lte,
- u32 flags, void *_ctx)
+create_temporary_file(struct filedes *fd_ret, tchar **name_ret)
+{
+ tchar *name;
+ int open_flags;
+ int raw_fd;
+
+retry:
+ name = ttempnam(NULL, T("wimlib"));
+ if (!name) {
+ ERROR_WITH_ERRNO("Failed to create temporary filename");
+ return WIMLIB_ERR_NOMEM;
+ }
+
+ open_flags = O_WRONLY | O_CREAT | O_EXCL | O_BINARY;
+#ifdef __WIN32__
+ open_flags |= _O_SHORT_LIVED;
+#endif
+ raw_fd = topen(name, open_flags, 0600);
+
+ if (raw_fd < 0) {
+ if (errno == EEXIST) {
+ FREE(name);
+ goto retry;
+ }
+ ERROR_WITH_ERRNO("Failed to create temporary file "
+ "\"%"TS"\"", name);
+ FREE(name);
+ return WIMLIB_ERR_OPEN;
+ }
+
+ filedes_init(fd_ret, raw_fd);
+ *name_ret = name;
+ return 0;
+}
+
+static int
+begin_extract_stream_wrapper(struct wim_lookup_table_entry *lte, void *_ctx)
{
struct apply_ctx *ctx = _ctx;
ctx->cur_stream = lte;
+ ctx->cur_stream_offset = 0;
- return (*ctx->saved_cbs->begin_stream)(lte, flags,
- ctx->saved_cbs->begin_stream_ctx);
+ if (unlikely(lte->out_refcnt > MAX_OPEN_STREAMS))
+ return create_temporary_file(&ctx->tmpfile_fd, &ctx->tmpfile_name);
+ else
+ return (*ctx->saved_cbs->begin_stream)(lte, ctx->saved_cbs->begin_stream_ctx);
}
static int
-consume_chunk_with_progress(const void *chunk, size_t size, void *_ctx)
+extract_chunk_wrapper(const void *chunk, size_t size, void *_ctx)
{
struct apply_ctx *ctx = _ctx;
union wimlib_progress_info *progress = &ctx->progress;
int ret;
+ ctx->cur_stream_offset += size;
+
if (likely(ctx->supported_features.hard_links)) {
progress->extract.completed_bytes +=
(u64)size * ctx->cur_stream->out_refcnt;
+ if (ctx->cur_stream_offset == ctx->cur_stream->size)
+ progress->extract.completed_streams += ctx->cur_stream->out_refcnt;
} else {
const struct stream_owner *owners = stream_owners(ctx->cur_stream);
for (u32 i = 0; i < ctx->cur_stream->out_refcnt; i++) {
d_extraction_alias_node)
{
progress->extract.completed_bytes += size;
+ if (ctx->cur_stream_offset == ctx->cur_stream->size)
+ progress->extract.completed_streams++;
}
}
}
{
ctx->next_progress = UINT64_MAX;
} else {
- ctx->next_progress += progress->extract.total_bytes / 128;
- if (ctx->next_progress > progress->extract.total_bytes)
+ /* Send new message as soon as another 1/128 of the
+ * total has been extracted. (Arbitrary number.) */
+ ctx->next_progress =
+ progress->extract.completed_bytes +
+ progress->extract.total_bytes / 128;
+
+ /* ... Unless that would be more than 5000000 bytes, in
+ * which case send the next after the next 5000000
+ * bytes. (Another arbitrary number.) */
+ if (progress->extract.completed_bytes + 5000000 <
+ ctx->next_progress)
+ ctx->next_progress =
+ progress->extract.completed_bytes + 5000000;
+
+ /* ... But always send a message as soon as we're
+ * completely done. */
+ if (progress->extract.total_bytes < ctx->next_progress)
ctx->next_progress = progress->extract.total_bytes;
}
}
- return (*ctx->saved_cbs->consume_chunk)(chunk, size,
- ctx->saved_cbs->consume_chunk_ctx);
+
+ if (unlikely(filedes_valid(&ctx->tmpfile_fd))) {
+ /* Just extracting to temporary file for now. */
+ ret = full_write(&ctx->tmpfile_fd, chunk, size);
+ if (ret) {
+ ERROR_WITH_ERRNO("Error writing data to "
+ "temporary file \"%"TS"\"",
+ ctx->tmpfile_name);
+ }
+ return ret;
+ } else {
+ return (*ctx->saved_cbs->consume_chunk)(chunk, size,
+ ctx->saved_cbs->consume_chunk_ctx);
+ }
+}
+
+static int
+extract_from_tmpfile(const tchar *tmpfile_name, struct apply_ctx *ctx)
+{
+ struct wim_lookup_table_entry tmpfile_lte;
+ struct wim_lookup_table_entry *orig_lte = ctx->cur_stream;
+ const struct read_stream_list_callbacks *cbs = ctx->saved_cbs;
+ int ret;
+ const u32 orig_refcnt = orig_lte->out_refcnt;
+
+ BUILD_BUG_ON(MAX_OPEN_STREAMS < ARRAY_LEN(orig_lte->inline_stream_owners));
+
+ struct stream_owner *owners = orig_lte->stream_owners;
+
+ /* Copy the stream's data from the temporary file to each of its
+ * destinations.
+ *
+ * This is executed only in the very uncommon case that a
+ * single-instance stream is being extracted to more than
+ * MAX_OPEN_STREAMS locations! */
+
+ memcpy(&tmpfile_lte, orig_lte, sizeof(struct wim_lookup_table_entry));
+ tmpfile_lte.resource_location = RESOURCE_IN_FILE_ON_DISK;
+ tmpfile_lte.file_on_disk = ctx->tmpfile_name;
+ ret = 0;
+ for (u32 i = 0; i < orig_refcnt; i++) {
+
+ /* Note: it usually doesn't matter whether we pass the original
+ * stream entry to callbacks provided by the extraction backend
+ * as opposed to the tmpfile stream entry, since they shouldn't
+ * actually read data from the stream other than through the
+ * read_stream_prefix() call below. But for
+ * WIMLIB_EXTRACT_FLAG_WIMBOOT mode on Windows it does matter
+ * because it needs the original stream location in order to
+ * create the external backing reference. */
+
+ orig_lte->out_refcnt = 1;
+ orig_lte->inline_stream_owners[0] = owners[i];
+
+ ret = (*cbs->begin_stream)(orig_lte, cbs->begin_stream_ctx);
+ if (ret)
+ break;
+
+ /* Extra SHA-1 isn't necessary here, but it shouldn't hurt as
+ * this case is very rare anyway. */
+ ret = extract_stream(&tmpfile_lte, tmpfile_lte.size,
+ cbs->consume_chunk,
+ cbs->consume_chunk_ctx);
+
+ ret = (*cbs->end_stream)(orig_lte, ret, cbs->end_stream_ctx);
+ if (ret)
+ break;
+ }
+ FREE(owners);
+ orig_lte->out_refcnt = 0;
+ return ret;
+}
+
+static int
+end_extract_stream_wrapper(struct wim_lookup_table_entry *stream,
+ int status, void *_ctx)
+{
+ struct apply_ctx *ctx = _ctx;
+
+ if (unlikely(filedes_valid(&ctx->tmpfile_fd))) {
+ filedes_close(&ctx->tmpfile_fd);
+ if (!status)
+ status = extract_from_tmpfile(ctx->tmpfile_name, ctx);
+ filedes_invalidate(&ctx->tmpfile_fd);
+ tunlink(ctx->tmpfile_name);
+ FREE(ctx->tmpfile_name);
+ return status;
+ } else {
+ return (*ctx->saved_cbs->end_stream)(stream, status,
+ ctx->saved_cbs->end_stream_ctx);
+ }
}
/*
*
* This also works if the WIM is being read from a pipe, whereas attempting to
* read streams directly (e.g. with read_full_stream_into_buf()) will not.
+ *
+ * This also will split up streams that will need to be extracted to more than
+ * MAX_OPEN_STREAMS locations, as measured by the 'out_refcnt' of each stream.
+ * Therefore, the apply_operations implementation need not worry about running
+ * out of file descriptors, unless it might open more than one file descriptor
+ * per nominal destination (e.g. Win32 currently might because the destination
+ * file system might not support hard links).
*/
int
extract_stream_list(struct apply_ctx *ctx,
const struct read_stream_list_callbacks *cbs)
{
struct read_stream_list_callbacks wrapper_cbs = {
- .begin_stream = begin_extract_stream_with_progress,
+ .begin_stream = begin_extract_stream_wrapper,
.begin_stream_ctx = ctx,
- .consume_chunk = consume_chunk_with_progress,
+ .consume_chunk = extract_chunk_wrapper,
.consume_chunk_ctx = ctx,
- .end_stream = cbs->end_stream,
- .end_stream_ctx = cbs->end_stream_ctx,
+ .end_stream = end_extract_stream_wrapper,
+ .end_stream_ctx = ctx,
};
- if (ctx->progfunc) {
- ctx->saved_cbs = cbs;
- cbs = &wrapper_cbs;
- }
+ ctx->saved_cbs = cbs;
if (ctx->extract_flags & WIMLIB_EXTRACT_FLAG_FROM_PIPE) {
- return load_streams_from_pipe(ctx, cbs);
+ return load_streams_from_pipe(ctx, &wrapper_cbs);
} else {
return read_stream_list(&ctx->stream_list,
offsetof(struct wim_lookup_table_entry,
extraction_list),
- cbs, VERIFY_STREAM_HASHES);
+ &wrapper_cbs, VERIFY_STREAM_HASHES);
}
}
if (dentry_is_root(dentry))
return 0;
+#ifdef WITH_NTFS_3G
if (ctx->extract_flags & WIMLIB_EXTRACT_FLAG_NTFS) {
dentry->d_extraction_name = dentry->file_name;
dentry->d_extraction_name_nchars = dentry->file_name_nbytes /
sizeof(utf16lechar);
return 0;
}
+#endif
if (!ctx->supported_features.case_sensitive_filenames) {
struct wim_dentry *other;
return 0;
ctx->progress.extract.total_bytes += lte->size;
- ctx->progress.extract.num_streams++;
+ ctx->progress.extract.total_streams++;
if (inode->i_visited)
return 0;
ctx->progress.extract.target = target;
}
INIT_LIST_HEAD(&ctx->stream_list);
+ filedes_invalidate(&ctx->tmpfile_fd);
ret = (*ops->get_supported_features)(target, &ctx->supported_features);
if (ret)
}
#endif
-#ifndef __WIN32__
if (extract_flags & WIMLIB_EXTRACT_FLAG_WIMBOOT) {
+#ifdef __WIN32__
+ if (!wim->filename)
+ return WIMLIB_ERR_NO_FILENAME;
+#else
ERROR("WIMBoot extraction is only supported on Windows!");
return WIMLIB_ERR_UNSUPPORTED;
- }
#endif
+ }
+
if ((extract_flags & (WIMLIB_EXTRACT_FLAG_RPFIX |
WIMLIB_EXTRACT_FLAG_NORPFIX |
git://wimlib.net / wimlib / blobdiff