#include "dentry.h"
#include "lookup_table.h"
#include "xml.h"
-#include "lzx.h"
-#include "xpress.h"
-
#ifdef ENABLE_MULTITHREADED_COMPRESSION
# include <pthread.h>
/*
* compress_func_t- Pointer to a function to compresses a chunk
- * of a WIM resource. This may be either xpress_compress()
- * (xpress-compress.c) or lzx_compress() (lzx-compress.c).
+ * of a WIM resource. This may be either
+ * wimlib_xpress_compress() (xpress-compress.c) or
+ * wimlib_lzx_compress() (lzx-compress.c).
*
* @chunk: Uncompressed data of the chunk.
* @chunk_size: Size of the uncompressed chunk, in bytes.
get_compress_func(int out_ctype)
{
if (out_ctype == WIMLIB_COMPRESSION_TYPE_LZX)
- return lzx_compress;
+ return wimlib_lzx_compress;
else
- return xpress_compress;
+ return wimlib_xpress_compress;
}
/*
*
* @chunk: Uncompressed data of the chunk.
* @chunk_size: Size of the chunk (<= WIM_CHUNK_SIZE)
- * @out_fp: FILE * to write tho chunk to.
- * @out_ctype: Compression type to use when writing the chunk (ignored if no
- * chunk table provided)
+ * @out_fp: FILE * to write the chunk to.
+ * @compress: Compression function to use (NULL if writing uncompressed
+ * data).
* @chunk_tab: Pointer to chunk table being created. It is updated with the
* offset of the chunk we write.
*
* Returns 0 on success; nonzero on failure.
*/
static int
-write_wim_resource_chunk(const u8 chunk[], unsigned chunk_size,
+write_wim_resource_chunk(const void *chunk, unsigned chunk_size,
FILE *out_fp, compress_func_t compress,
struct chunk_table *chunk_tab)
{
const u8 *out_chunk;
unsigned out_chunk_size;
- if (chunk_tab) {
+ if (compress) {
u8 *compressed_chunk = alloca(chunk_size);
out_chunk_size = compress(chunk, chunk_size, compressed_chunk);
return 0;
}
-/* Prepare for multiple reads to a resource by caching a FILE * or NTFS
- * attribute pointer in the lookup table entry. */
-static int
-prepare_resource_for_read(struct wim_lookup_table_entry *lte
-
- #ifdef WITH_NTFS_3G
- , ntfs_inode **ni_ret
- #endif
- )
-{
- switch (lte->resource_location) {
- case RESOURCE_IN_FILE_ON_DISK:
- if (!lte->file_on_disk_fp) {
- lte->file_on_disk_fp = tfopen(lte->file_on_disk, T("rb"));
- if (!lte->file_on_disk_fp) {
- ERROR_WITH_ERRNO("Failed to open the file "
- "`%"TS"'", lte->file_on_disk);
- return WIMLIB_ERR_OPEN;
- }
- }
- break;
-#ifdef WITH_NTFS_3G
- case RESOURCE_IN_NTFS_VOLUME:
- if (!lte->attr) {
- struct ntfs_location *loc = lte->ntfs_loc;
- ntfs_inode *ni;
- wimlib_assert(loc);
- ni = ntfs_pathname_to_inode(*loc->ntfs_vol_p, NULL, loc->path);
- if (!ni) {
- ERROR_WITH_ERRNO("Failed to open inode `%"TS"' in NTFS "
- "volume", loc->path);
- return WIMLIB_ERR_NTFS_3G;
- }
- lte->attr = ntfs_attr_open(ni,
- loc->is_reparse_point ? AT_REPARSE_POINT : AT_DATA,
- loc->stream_name,
- loc->stream_name_nchars);
- if (!lte->attr) {
- ERROR_WITH_ERRNO("Failed to open attribute of `%"TS"' in "
- "NTFS volume", loc->path);
- ntfs_inode_close(ni);
- return WIMLIB_ERR_NTFS_3G;
- }
- *ni_ret = ni;
- }
- break;
-#endif
-#ifdef __WIN32__
- case RESOURCE_WIN32:
- if (lte->win32_file_on_disk_fp == INVALID_HANDLE_VALUE) {
- lte->win32_file_on_disk_fp =
- win32_open_file_data_only(lte->file_on_disk);
- if (lte->win32_file_on_disk_fp == INVALID_HANDLE_VALUE) {
- ERROR("Win32 API: Can't open %"TS, lte->file_on_disk);
- win32_error_last();
- return WIMLIB_ERR_OPEN;
- }
- }
- break;
-#endif
- default:
- break;
- }
- return 0;
-}
-
-/* Undo prepare_resource_for_read() by closing the cached FILE * or NTFS
- * attribute. */
-static void
-end_wim_resource_read(struct wim_lookup_table_entry *lte
- #ifdef WITH_NTFS_3G
- , ntfs_inode *ni
- #endif
- )
-{
- if (lte->resource_location == RESOURCE_IN_FILE_ON_DISK
- && lte->file_on_disk_fp)
- {
- fclose(lte->file_on_disk_fp);
- lte->file_on_disk_fp = NULL;
- }
-#ifdef WITH_NTFS_3G
- else if (lte->resource_location == RESOURCE_IN_NTFS_VOLUME) {
- if (lte->attr) {
- ntfs_attr_close(lte->attr);
- lte->attr = NULL;
- }
- if (ni)
- ntfs_inode_close(ni);
- }
-#endif
-#ifdef __WIN32__
- else if (lte->resource_location == RESOURCE_WIN32
- && lte->win32_file_on_disk_fp != INVALID_HANDLE_VALUE)
- {
- win32_close_file(lte->win32_file_on_disk_fp);
- lte->win32_file_on_disk_fp = INVALID_HANDLE_VALUE;
- }
-#endif
-}
-
static int
write_uncompressed_resource_and_truncate(struct wim_lookup_table_entry *lte,
FILE *out_fp,
"output WIM file", file_offset);
return WIMLIB_ERR_WRITE;
}
- ret = write_wim_resource(lte, out_fp, WIMLIB_COMPRESSION_TYPE_NONE,
- out_res_entry, 0);
- if (ret != 0)
+ ret = write_wim_resource(lte, out_fp,
+ WIMLIB_COMPRESSION_TYPE_NONE,
+ out_res_entry,
+ 0);
+ if (ret)
return ret;
return fflush_and_ftruncate(out_fp,
file_offset + wim_resource_size(lte));
}
-/*
- * Writes a WIM resource to a FILE * opened for writing. The resource may be
- * written uncompressed or compressed depending on the @out_ctype parameter.
- *
- * If by chance the resource compresses to more than the original size (this may
- * happen with random data or files than are pre-compressed), the resource is
- * instead written uncompressed (and this is reflected in the @out_res_entry by
- * removing the WIM_RESHDR_FLAG_COMPRESSED flag).
- *
- * @lte: The lookup table entry for the WIM resource.
- * @out_fp: The FILE * to write the resource to.
- * @out_ctype: The compression type of the resource to write. Note: if this is
- * the same as the compression type of the WIM resource we
- * need to read, we simply copy the data (i.e. we do not
- * uncompress it, then compress it again).
- * @out_res_entry: If non-NULL, a resource entry that is filled in with the
- * offset, original size, compressed size, and compression flag
- * of the output resource.
- *
- * Returns 0 on success; nonzero on failure.
- */
+struct write_resource_ctx {
+ compress_func_t compress;
+ struct chunk_table *chunk_tab;
+ FILE *out_fp;
+ SHA_CTX sha_ctx;
+ bool doing_sha;
+};
+
+static int
+write_resource_cb(const void *chunk, size_t chunk_size, void *_ctx)
+{
+ struct write_resource_ctx *ctx = _ctx;
+
+ if (ctx->doing_sha)
+ sha1_update(&ctx->sha_ctx, chunk, chunk_size);
+
+ if (ctx->compress) {
+ return write_wim_resource_chunk(chunk, chunk_size,
+ ctx->out_fp, ctx->compress,
+ ctx->chunk_tab);
+ } else {
+ if (fwrite(chunk, 1, chunk_size, ctx->out_fp) != chunk_size) {
+ ERROR_WITH_ERRNO("Error writing to output WIM");
+ return WIMLIB_ERR_WRITE;
+ } else {
+ return 0;
+ }
+ }
+}
+
int
write_wim_resource(struct wim_lookup_table_entry *lte,
FILE *out_fp, int out_ctype,
struct resource_entry *out_res_entry,
int flags)
{
- u64 bytes_remaining;
- u64 original_size;
- u64 old_compressed_size;
- u64 new_compressed_size;
- u64 offset;
+ struct write_resource_ctx write_ctx;
+ u64 new_size;
+ off_t offset;
int ret;
- struct chunk_table *chunk_tab = NULL;
- bool raw;
- off_t file_offset;
- compress_func_t compress = NULL;
-#ifdef WITH_NTFS_3G
- ntfs_inode *ni = NULL;
-#endif
-
- wimlib_assert(lte);
- /* Original size of the resource */
- original_size = wim_resource_size(lte);
-
- /* Compressed size of the resource (as it exists now) */
- old_compressed_size = wim_resource_compressed_size(lte);
+ if (wim_resource_size(lte) == 0) {
+ /* Empty resource; nothing needs to be done, so just return
+ * success. */
+ return 0;
+ }
- /* Current offset in output file */
- file_offset = ftello(out_fp);
- if (file_offset == -1) {
- ERROR_WITH_ERRNO("Failed to get offset in output "
- "stream");
+ offset = ftello(out_fp);
+ if (offset == -1) {
+ ERROR_WITH_ERRNO("Can't get position in output WIM");
return WIMLIB_ERR_WRITE;
}
- /* Are the compression types the same? If so, do a raw copy (copy
- * without decompressing and recompressing the data). */
- raw = (wim_resource_compression_type(lte) == out_ctype
- && out_ctype != WIMLIB_COMPRESSION_TYPE_NONE
- && !(flags & WIMLIB_RESOURCE_FLAG_RECOMPRESS));
+ /* Can we simply copy the compressed data without recompressing it? */
- if (raw) {
+ if (!(flags & WIMLIB_RESOURCE_FLAG_RECOMPRESS) &&
+ lte->resource_location == RESOURCE_IN_WIM &&
+ wimlib_get_compression_type(lte->wim) == out_ctype)
+ {
flags |= WIMLIB_RESOURCE_FLAG_RAW;
- bytes_remaining = old_compressed_size;
+ write_ctx.doing_sha = false;
} else {
- flags &= ~WIMLIB_RESOURCE_FLAG_RAW;
- bytes_remaining = original_size;
+ write_ctx.doing_sha = true;
+ sha1_init(&write_ctx.sha_ctx);
}
- /* Empty resource; nothing needs to be done, so just return success. */
- if (bytes_remaining == 0)
- return 0;
-
- /* Buffer for reading chunks for the resource */
- u8 buf[min(WIM_CHUNK_SIZE, bytes_remaining)];
-
- /* If we are writing a compressed resource and not doing a raw copy, we
- * need to initialize the chunk table */
- if (out_ctype != WIMLIB_COMPRESSION_TYPE_NONE && !raw) {
- ret = begin_wim_resource_chunk_tab(lte, out_fp, file_offset,
- &chunk_tab);
- if (ret != 0)
- goto out;
- }
-
- /* If the WIM resource is in an external file, open a FILE * to it so we
- * don't have to open a temporary one in read_wim_resource() for each
- * chunk. */
-#ifdef WITH_NTFS_3G
- ret = prepare_resource_for_read(lte, &ni);
-#else
- ret = prepare_resource_for_read(lte);
-#endif
- if (ret != 0)
- goto out;
-
- /* If we aren't doing a raw copy, we will compute the SHA1 message
- * digest of the resource as we read it, and verify it's the same as the
- * hash given in the lookup table entry once we've finished reading the
- * resource. */
- SHA_CTX ctx;
- if (!raw) {
- sha1_init(&ctx);
- compress = get_compress_func(out_ctype);
- }
- offset = 0;
-
- /* While there are still bytes remaining in the WIM resource, read a
- * chunk of the resource, update SHA1, then write that chunk using the
- * desired compression type. */
- do {
- u64 to_read = min(bytes_remaining, WIM_CHUNK_SIZE);
- ret = read_wim_resource(lte, buf, to_read, offset, flags);
- if (ret != 0)
- goto out_fclose;
- if (!raw)
- sha1_update(&ctx, buf, to_read);
- ret = write_wim_resource_chunk(buf, to_read, out_fp,
- compress, chunk_tab);
- if (ret != 0)
- goto out_fclose;
- bytes_remaining -= to_read;
- offset += to_read;
- } while (bytes_remaining);
-
- /* Raw copy: The new compressed size is the same as the old compressed
- * size
- *
- * Using WIMLIB_COMPRESSION_TYPE_NONE: The new compressed size is the
- * original size
- *
- * Using a different compression type: Call
- * finish_wim_resource_chunk_tab() and it will provide the new
- * compressed size.
- */
- if (raw) {
- new_compressed_size = old_compressed_size;
+ /* Initialize the chunk table and set the compression function if
+ * compressing the resource. */
+ if (out_ctype == WIMLIB_COMPRESSION_TYPE_NONE ||
+ (flags & WIMLIB_RESOURCE_FLAG_RAW)) {
+ write_ctx.compress = NULL;
+ write_ctx.chunk_tab = NULL;
} else {
- if (out_ctype == WIMLIB_COMPRESSION_TYPE_NONE)
- new_compressed_size = original_size;
- else {
- ret = finish_wim_resource_chunk_tab(chunk_tab, out_fp,
- &new_compressed_size);
- if (ret != 0)
- goto out_fclose;
- }
+ write_ctx.compress = get_compress_func(out_ctype);
+ ret = begin_wim_resource_chunk_tab(lte, out_fp,
+ offset,
+ &write_ctx.chunk_tab);
+ if (ret)
+ return ret;
}
- /* Verify SHA1 message digest of the resource, unless we are doing a raw
- * write (in which case we never even saw the uncompressed data). Or,
- * if the hash we had before is all 0's, just re-set it to be the new
- * hash. */
- if (!raw) {
+ /* Write the data */
+ write_ctx.out_fp = out_fp;
+ ret = read_resource_prefix(lte, wim_resource_size(lte),
+ write_resource_cb, &write_ctx, 0);
+
+ /* Verify SHA1 message digest of the resource, or set the hash for the
+ * first time. */
+ if (write_ctx.doing_sha) {
u8 md[SHA1_HASH_SIZE];
- sha1_final(md, &ctx);
- if (is_zero_hash(lte->hash)) {
+ sha1_final(md, &write_ctx.sha_ctx);
+ if (lte->unhashed) {
copy_hash(lte->hash, md);
} else if (!hashes_equal(md, lte->hash)) {
ERROR("WIM resource has incorrect hash!");
- if (lte->resource_location == RESOURCE_IN_FILE_ON_DISK) {
- ERROR("We were reading it from `%"TS"'; maybe "
+ if (lte_filename_valid(lte)) {
+ ERROR("We were reading it from \"%"TS"\"; maybe "
"it changed while we were reading it.",
lte->file_on_disk);
}
ret = WIMLIB_ERR_INVALID_RESOURCE_HASH;
- goto out_fclose;
+ goto out_free_chunk_tab;
}
}
- if (!raw && new_compressed_size >= original_size &&
- out_ctype != WIMLIB_COMPRESSION_TYPE_NONE)
- {
- /* Oops! We compressed the resource to larger than the original
- * size. Write the resource uncompressed instead. */
- ret = write_uncompressed_resource_and_truncate(lte,
- out_fp,
- file_offset,
- out_res_entry);
- if (ret != 0)
- goto out_fclose;
+ out_res_entry->flags = lte->resource_entry.flags;
+ out_res_entry->original_size = wim_resource_size(lte);
+ out_res_entry->offset = offset;
+ if (flags & WIMLIB_RESOURCE_FLAG_RAW) {
+ /* Doing a raw write: The new compressed size is the same as
+ * the compressed size in the other WIM. */
+ new_size = lte->resource_entry.size;
+ } else if (out_ctype == WIMLIB_COMPRESSION_TYPE_NONE) {
+ /* Using WIMLIB_COMPRESSION_TYPE_NONE: The new compressed size
+ * is the original size. */
+ new_size = lte->resource_entry.original_size;
+ out_res_entry->flags &= ~WIM_RESHDR_FLAG_COMPRESSED;
} else {
- if (out_res_entry) {
- out_res_entry->size = new_compressed_size;
- out_res_entry->original_size = original_size;
- out_res_entry->offset = file_offset;
- out_res_entry->flags = lte->resource_entry.flags
- & ~WIM_RESHDR_FLAG_COMPRESSED;
- if (out_ctype != WIMLIB_COMPRESSION_TYPE_NONE)
- out_res_entry->flags |= WIM_RESHDR_FLAG_COMPRESSED;
+ /* Using a different compression type: Call
+ * finish_wim_resource_chunk_tab() and it will provide the new
+ * compressed size. */
+ ret = finish_wim_resource_chunk_tab(write_ctx.chunk_tab, out_fp,
+ &new_size);
+ if (ret)
+ goto out_free_chunk_tab;
+ if (new_size >= wim_resource_size(lte)) {
+ /* Oops! We compressed the resource to larger than the original
+ * size. Write the resource uncompressed instead. */
+ ret = write_uncompressed_resource_and_truncate(lte,
+ out_fp,
+ offset,
+ out_res_entry);
+ goto out_free_chunk_tab;
}
+ out_res_entry->flags |= WIM_RESHDR_FLAG_COMPRESSED;
}
+ out_res_entry->size = new_size;
ret = 0;
-out_fclose:
-#ifdef WITH_NTFS_3G
- end_wim_resource_read(lte, ni);
-#else
- end_wim_resource_read(lte);
-#endif
-out:
- FREE(chunk_tab);
+out_free_chunk_tab:
+ FREE(write_ctx.chunk_tab);
return ret;
}
}
}
+static int
+sha1_chunk(const void *buf, size_t len, void *ctx)
+{
+ sha1_update(ctx, buf, len);
+ return 0;
+}
+
+static int
+sha1_resource(struct wim_lookup_table_entry *lte)
+{
+ int ret;
+ SHA_CTX sha_ctx;
+
+ sha1_init(&sha_ctx);
+ ret = read_resource_prefix(lte, wim_resource_size(lte),
+ sha1_chunk, &sha_ctx, 0);
+ if (ret == 0)
+ sha1_final(lte->hash, &sha_ctx);
+ return ret;
+}
+
+enum {
+ STREAMS_MERGED = 0,
+ STREAMS_NOT_MERGED = 1,
+};
+
static int
do_write_stream_list(struct list_head *my_resources,
+ struct wim_lookup_table *lookup_table,
FILE *out_fp,
int out_ctype,
wimlib_progress_func_t progress_func,
int write_resource_flags)
{
int ret;
- struct wim_lookup_table_entry *lte, *tmp;
+ struct wim_lookup_table_entry *lte;
+
+ while (!list_empty(my_resources)) {
+ lte = container_of(my_resources->next,
+ struct wim_lookup_table_entry,
+ write_streams_list);
+ list_del(<e->write_streams_list);
+ if (lte->unhashed && !lte->unique_size) {
+ struct wim_lookup_table_entry *duplicate_lte;
+ struct wim_lookup_table_entry **my_ptr;
+
+ my_ptr = lte->my_ptr;
+ ret = sha1_resource(lte);
+ if (ret)
+ return ret;
+ duplicate_lte = __lookup_resource(lookup_table, lte->hash);
+ if (duplicate_lte) {
+ bool new_stream = (duplicate_lte->out_refcnt == 0);
+ duplicate_lte->refcnt += lte->refcnt;
+ duplicate_lte->out_refcnt += lte->refcnt;
+ *my_ptr = duplicate_lte;
+ free_lookup_table_entry(lte);
+
+ if (new_stream) {
+ lte = duplicate_lte;
+ DEBUG("Stream of length %"PRIu64" is duplicate "
+ "with one already in WIM",
+ wim_resource_size(duplicate_lte));
+ } else {
+ DEBUG("Discarding duplicate stream of length %"PRIu64,
+ wim_resource_size(duplicate_lte));
+ goto skip_to_progress;
+ }
+
+ } else {
+ lookup_table_insert(lookup_table, lte);
+ lte->out_refcnt = lte->refcnt;
+ lte->unhashed = 0;
+ }
+ }
+
+ wimlib_assert(lte->out_refcnt != 0);
- list_for_each_entry_safe(lte, tmp, my_resources, staging_list) {
ret = write_wim_resource(lte,
out_fp,
out_ctype,
<e->output_resource_entry,
write_resource_flags);
- if (ret != 0)
+ if (ret)
return ret;
- list_del(<e->staging_list);
-
+ if (lte->unhashed) {
+ lookup_table_insert(lookup_table, lte);
+ lte->unhashed = 0;
+ }
+ skip_to_progress:
do_write_streams_progress(progress,
progress_func,
wim_resource_size(lte));
static int
write_stream_list_serial(struct list_head *stream_list,
+ struct wim_lookup_table *lookup_table,
FILE *out_fp,
int out_ctype,
int write_flags,
progress->write_streams.num_threads = 1;
if (progress_func)
progress_func(WIMLIB_PROGRESS_MSG_WRITE_STREAMS, progress);
- return do_write_stream_list(stream_list, out_fp,
+ return do_write_stream_list(stream_list,
+ lookup_table,
+ out_fp,
out_ctype, progress_func,
progress, write_resource_flags);
}
static int
write_stream_list_parallel(struct list_head *stream_list,
+ struct wim_lookup_table *lookup_table,
FILE *out_fp,
int out_ctype,
int write_flags,
out_serial:
WARNING("Falling back to single-threaded compression");
return write_stream_list_serial(stream_list,
+ lookup_table,
out_fp,
out_ctype,
write_flags,
* @out_ctype and up to @num_threads compressor threads.
*/
static int
-write_stream_list(struct list_head *stream_list, FILE *out_fp,
- int out_ctype, int write_flags,
- unsigned num_threads,
- wimlib_progress_func_t progress_func)
+write_stream_list(struct list_head *stream_list,
+ struct wim_lookup_table *lookup_table,
+ FILE *out_fp, int out_ctype, int write_flags,
+ unsigned num_threads, wimlib_progress_func_t progress_func)
{
struct wim_lookup_table_entry *lte;
size_t num_streams = 0;
u64 total_bytes = 0;
u64 total_compression_bytes = 0;
union wimlib_progress_info progress;
+ int ret;
- list_for_each_entry(lte, stream_list, staging_list) {
+ list_for_each_entry(lte, stream_list, write_streams_list) {
num_streams++;
total_bytes += wim_resource_size(lte);
if (out_ctype != WIMLIB_COMPRESSION_TYPE_NONE
#ifdef ENABLE_MULTITHREADED_COMPRESSION
if (total_compression_bytes >= 1000000 && num_threads != 1)
- return write_stream_list_parallel(stream_list,
- out_fp,
- out_ctype,
- write_flags,
- num_threads,
- progress_func,
- &progress);
+ ret = write_stream_list_parallel(stream_list,
+ lookup_table,
+ out_fp,
+ out_ctype,
+ write_flags,
+ num_threads,
+ progress_func,
+ &progress);
else
#endif
- return write_stream_list_serial(stream_list,
- out_fp,
- out_ctype,
- write_flags,
- progress_func,
- &progress);
+ ret = write_stream_list_serial(stream_list,
+ lookup_table,
+ out_fp,
+ out_ctype,
+ write_flags,
+ progress_func,
+ &progress);
+ return ret;
}
struct lte_overwrite_prepare_args {
int ret;
for (int i = 0; i < wim->hdr.image_count; i++) {
- ret = lte_overwrite_prepare(wim->image_metadata[i].metadata_lte,
+ ret = lte_overwrite_prepare(wim->image_metadata[i]->metadata_lte,
&args);
if (ret)
return ret;
lte_overwrite_prepare, &args);
}
+struct stream_size_table {
+ struct hlist_head *array;
+ size_t num_entries;
+ size_t capacity;
+};
+
+static int
+init_stream_size_table(struct stream_size_table *tab, size_t capacity)
+{
+ tab->array = CALLOC(capacity, sizeof(tab->array[0]));
+ if (!tab->array)
+ return WIMLIB_ERR_NOMEM;
+ tab->num_entries = 0;
+ tab->capacity = capacity;
+ return 0;
+}
+
+static void
+destroy_stream_size_table(struct stream_size_table *tab)
+{
+ FREE(tab->array);
+}
+
+static int
+stream_size_table_insert(struct wim_lookup_table_entry *lte, void *_tab)
+{
+ struct stream_size_table *tab = _tab;
+ size_t pos;
+ struct wim_lookup_table_entry *hashed_lte;
+ struct hlist_node *tmp;
+
+ pos = hash_u64(wim_resource_size(lte)) % tab->capacity;
+ lte->unique_size = 1;
+ hlist_for_each_entry(hashed_lte, tmp, &tab->array[pos], hash_list_2) {
+ if (wim_resource_size(hashed_lte) == wim_resource_size(lte)) {
+ lte->unique_size = 0;
+ hashed_lte->unique_size = 0;
+ break;
+ }
+ }
+
+ hlist_add_head(<e->hash_list_2, &tab->array[pos]);
+ tab->num_entries++;
+ return 0;
+}
+
+
+struct find_streams_ctx {
+ struct list_head stream_list;
+ struct stream_size_table stream_size_tab;
+};
+
static int
inode_find_streams_to_write(struct wim_inode *inode,
struct wim_lookup_table *table,
- struct list_head *stream_list)
+ struct list_head *stream_list,
+ struct stream_size_table *tab)
{
struct wim_lookup_table_entry *lte;
for (unsigned i = 0; i <= inode->i_num_ads; i++) {
lte = inode_stream_lte(inode, i, table);
if (lte) {
- if (lte->out_refcnt == 0)
- list_add_tail(<e->staging_list, stream_list);
+ if (lte->out_refcnt == 0) {
+ if (lte->unhashed)
+ stream_size_table_insert(lte, tab);
+ list_add_tail(<e->write_streams_list, stream_list);
+ }
lte->out_refcnt += inode->i_nlink;
}
}
static int
image_find_streams_to_write(WIMStruct *w)
{
+ struct wim_image_metadata *imd;
+ struct find_streams_ctx *ctx;
struct wim_inode *inode;
- struct hlist_node *cur;
- struct hlist_head *inode_list;
+ struct wim_lookup_table_entry *lte;
+
+ ctx = w->private;
+ imd = wim_get_current_image_metadata(w);
+
+ image_for_each_unhashed_stream(lte, imd) {
+ lte->out_refcnt = 0;
+ wimlib_assert(lte->unhashed);
+ wimlib_assert(lte->my_ptr != NULL);
+ }
- inode_list = &wim_get_current_image_metadata(w)->inode_list;
- hlist_for_each_entry(inode, cur, inode_list, i_hlist) {
+ /* Go through this image's inodes to find any streams that have not been
+ * found yet. */
+ image_for_each_inode(inode, imd) {
inode_find_streams_to_write(inode, w->lookup_table,
- (struct list_head*)w->private);
+ &ctx->stream_list,
+ &ctx->stream_size_tab);
}
return 0;
}
+/* Given a WIM that from which one or all of the images is being written, build
+ * the list of unique streams ('struct wim_lookup_table_entry's) that must be
+ * written, plus any unhashed streams that need to be written but may be
+ * identical to other hashed or unhashed streams being written. These unhashed
+ * streams are checksummed while the streams are being written. To aid this
+ * process, the member @unique_size is set to 1 on streams that have a unique
+ * size and therefore must be written.
+ *
+ * The out_refcnt member of each 'struct wim_lookup_table_entry' is set to
+ * indicate the number of times the stream is referenced in only the streams
+ * that are being written; this may still be adjusted later when unhashed
+ * streams are being resolved.
+ */
static int
-write_wim_streams(WIMStruct *w, int image, int write_flags,
- unsigned num_threads,
- wimlib_progress_func_t progress_func)
+prepare_stream_list(WIMStruct *wim, int image, struct list_head *stream_list)
{
+ int ret;
+ struct find_streams_ctx ctx;
- for_lookup_table_entry(w->lookup_table, lte_zero_out_refcnt, NULL);
- LIST_HEAD(stream_list);
- w->private = &stream_list;
- for_image(w, image, image_find_streams_to_write);
- return write_stream_list(&stream_list, w->out_fp,
- wimlib_get_compression_type(w), write_flags,
- num_threads, progress_func);
+ for_lookup_table_entry(wim->lookup_table, lte_zero_out_refcnt, NULL);
+ ret = init_stream_size_table(&ctx.stream_size_tab, 9001);
+ if (ret)
+ return ret;
+ for_lookup_table_entry(wim->lookup_table, stream_size_table_insert,
+ &ctx.stream_size_tab);
+ INIT_LIST_HEAD(&ctx.stream_list);
+ wim->private = &ctx;
+ for_image(wim, image, image_find_streams_to_write);
+ destroy_stream_size_table(&ctx.stream_size_tab);
+
+ INIT_LIST_HEAD(stream_list);
+ list_splice(&ctx.stream_list, stream_list);
+ return 0;
+}
+
+/* Writes the streams for the specified @image in @wim to @wim->out_fp.
+ */
+static int
+write_wim_streams(WIMStruct *wim, int image, int write_flags,
+ unsigned num_threads,
+ wimlib_progress_func_t progress_func)
+{
+ int ret;
+ struct list_head stream_list;
+
+ ret = prepare_stream_list(wim, image, &stream_list);
+ if (ret)
+ return ret;
+ return write_stream_list(&stream_list,
+ wim->lookup_table,
+ wim->out_fp,
+ wimlib_get_compression_type(wim),
+ write_flags,
+ num_threads,
+ progress_func);
}
/*
} else {
memcpy(&hdr.boot_metadata_res_entry,
&w->image_metadata[
- hdr.boot_idx - 1].metadata_lte->output_resource_entry,
+ hdr.boot_idx - 1]->metadata_lte->output_resource_entry,
sizeof(struct resource_entry));
}
}
ret = write_header(&hdr, out);
- if (ret != 0)
+ if (ret)
goto out;
if (write_flags & WIMLIB_WRITE_FLAG_FSYNC) {
}
ret = begin_write(w, path, write_flags);
- if (ret != 0)
+ if (ret)
goto out;
ret = write_wim_streams(w, image, write_flags, num_threads,
progress_func);
- if (ret != 0)
+ if (ret)
goto out;
if (progress_func)
progress_func(WIMLIB_PROGRESS_MSG_WRITE_METADATA_BEGIN, NULL);
ret = for_image(w, image, write_metadata_resource);
- if (ret != 0)
+ if (ret)
goto out;
if (progress_func)
any_images_modified(WIMStruct *w)
{
for (int i = 0; i < w->hdr.image_count; i++)
- if (w->image_metadata[i].modified)
+ if (w->image_metadata[i]->modified)
return true;
return false;
}
int ret;
struct list_head stream_list;
off_t old_wim_end;
- bool found_modified_image;
DEBUG("Overwriting `%"TS"' in-place", w->filename);
if (!list_empty(&stream_list)) {
DEBUG("Writing newly added streams (offset = %"PRIu64")",
old_wim_end);
- ret = write_stream_list(&stream_list, w->out_fp,
+ ret = write_stream_list(&stream_list,
+ w->lookup_table,
+ w->out_fp,
wimlib_get_compression_type(w),
write_flags, num_threads,
progress_func);
DEBUG("No new streams were added");
}
- found_modified_image = false;
for (int i = 0; i < w->hdr.image_count; i++) {
- if (w->image_metadata[i].modified) {
+ if (w->image_metadata[i]->modified) {
select_wim_image(w, i + 1);
ret = write_metadata_resource(w);
- if (ret != 0)
+ if (ret)
goto out_ftruncate;
}
}
git://wimlib.net / wimlib / blobdiff