* along with wimlib; if not, see http://www.gnu.org/licenses/.
*/
-#include "wimlib_internal.h"
-#include "lookup_table.h"
-#include "buffer_io.h"
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include "wimlib/buffer_io.h"
+#include "wimlib/error.h"
+#include "wimlib/file_io.h"
+#include "wimlib/lookup_table.h"
+#include "wimlib/metadata.h"
+#include "wimlib/paths.h"
+#include "wimlib/resource.h"
+#include "wimlib/util.h"
+
#include <errno.h>
#include <stdlib.h>
-
#ifdef WITH_FUSE
-#include <unistd.h>
+# include <unistd.h> /* for unlink() */
#endif
struct wim_lookup_table *
} else {
FREE(table);
table = NULL;
- ERROR("Failed to allocate memory for lookup table with capacity %zu",
- capacity);
+ ERROR("Failed to allocate memory for lookup table "
+ "with capacity %zu", capacity);
}
}
return table;
}
struct wim_lookup_table_entry *
-new_lookup_table_entry()
+new_lookup_table_entry(void)
{
struct wim_lookup_table_entry *lte;
{
struct wim_lookup_table_entry *new;
- new = MALLOC(sizeof(*new));
+ new = memdup(old, sizeof(struct wim_lookup_table_entry));
if (!new)
return NULL;
- memcpy(new, old, sizeof(*old));
new->extracted_file = NULL;
switch (new->resource_location) {
#ifdef __WIN32__
case RESOURCE_WIN32:
case RESOURCE_WIN32_ENCRYPTED:
+#else
+ case RESOURCE_IN_FILE_ON_DISK:
#endif
#ifdef WITH_FUSE
case RESOURCE_IN_STAGING_FILE:
-#endif
- case RESOURCE_IN_FILE_ON_DISK:
BUILD_BUG_ON((void*)&old->file_on_disk !=
(void*)&old->staging_file_name);
- new->staging_file_name = TSTRDUP(old->staging_file_name);
- if (!new->staging_file_name)
+#endif
+ new->file_on_disk = TSTRDUP(old->file_on_disk);
+ if (!new->file_on_disk)
goto out_free;
break;
case RESOURCE_IN_ATTACHED_BUFFER:
- new->attached_buffer = MALLOC(wim_resource_size(old));
+ new->attached_buffer = memdup(old->attached_buffer,
+ wim_resource_size(old));
if (!new->attached_buffer)
goto out_free;
- memcpy(new->attached_buffer, old->attached_buffer,
- wim_resource_size(old));
break;
#ifdef WITH_NTFS_3G
case RESOURCE_IN_NTFS_VOLUME:
if (old->ntfs_loc) {
struct ntfs_location *loc;
- loc = MALLOC(sizeof(*loc));
+ loc = memdup(old->ntfs_loc, sizeof(struct ntfs_location));
if (!loc)
goto out_free;
- memcpy(loc, old->ntfs_loc, sizeof(*loc));
loc->path = NULL;
loc->stream_name = NULL;
new->ntfs_loc = loc;
loc->path = STRDUP(old->ntfs_loc->path);
if (!loc->path)
goto out_free;
- loc->stream_name = MALLOC((loc->stream_name_nchars + 1) * 2);
- if (!loc->stream_name)
- goto out_free;
- memcpy(loc->stream_name,
- old->ntfs_loc->stream_name,
- (loc->stream_name_nchars + 1) * 2);
+ if (loc->stream_name_nchars) {
+ loc->stream_name = memdup(old->ntfs_loc->stream_name,
+ loc->stream_name_nchars * 2);
+ if (!loc->stream_name)
+ goto out_free;
+ }
}
break;
#endif
{
if (lte) {
switch (lte->resource_location) {
- case RESOURCE_IN_STAGING_FILE:
- case RESOURCE_IN_ATTACHED_BUFFER:
- case RESOURCE_IN_FILE_ON_DISK:
-#ifdef __WIN32__
+ #ifdef __WIN32__
case RESOURCE_WIN32:
-#endif
+ case RESOURCE_WIN32_ENCRYPTED:
+ #else
+ case RESOURCE_IN_FILE_ON_DISK:
+ #endif
+ #ifdef WITH_FUSE
+ case RESOURCE_IN_STAGING_FILE:
BUILD_BUG_ON((void*)<e->file_on_disk !=
(void*)<e->staging_file_name);
+ #endif
+ case RESOURCE_IN_ATTACHED_BUFFER:
BUILD_BUG_ON((void*)<e->file_on_disk !=
(void*)<e->attached_buffer);
FREE(lte->file_on_disk);
wimlib_assert(lte != NULL);
wimlib_assert(lte->refcnt != 0);
if (--lte->refcnt == 0) {
- if (!lte->unhashed)
+ if (lte->unhashed)
+ list_del(<e->unhashed_list);
+ else
lookup_table_unlink(table, lte);
#ifdef WITH_FUSE
if (lte->num_opened_fds == 0)
return ret;
}
+
+/* Size of each lookup table entry in the WIM file. */
+#define WIM_LOOKUP_TABLE_ENTRY_DISK_SIZE 50
+
/*
* Reads the lookup table from a WIM file.
*
int
read_lookup_table(WIMStruct *w)
{
- u64 num_entries;
- u8 buf[WIM_LOOKUP_TABLE_ENTRY_DISK_SIZE];
int ret;
+ size_t num_entries;
struct wim_lookup_table *table;
struct wim_lookup_table_entry *cur_entry, *duplicate_entry;
-
- if (resource_is_compressed(&w->hdr.lookup_table_res_entry)) {
- ERROR("Didn't expect a compressed lookup table!");
- ERROR("Ask the author to implement support for this.");
- return WIMLIB_ERR_COMPRESSED_LOOKUP_TABLE;
- }
+ u8 table_buf[(BUFFER_SIZE / WIM_LOOKUP_TABLE_ENTRY_DISK_SIZE) *
+ WIM_LOOKUP_TABLE_ENTRY_DISK_SIZE];
+ const u8 *p;
+ off_t offset;
+ size_t buf_entries_remaining;
DEBUG("Reading lookup table: offset %"PRIu64", size %"PRIu64"",
w->hdr.lookup_table_res_entry.offset,
w->hdr.lookup_table_res_entry.original_size);
- if (fseeko(w->fp, w->hdr.lookup_table_res_entry.offset, SEEK_SET) != 0)
- {
- ERROR_WITH_ERRNO("Failed to seek to byte %"PRIu64" to read "
- "lookup table",
- w->hdr.lookup_table_res_entry.offset);
- return WIMLIB_ERR_READ;
+ if (resource_is_compressed(&w->hdr.lookup_table_res_entry)) {
+ ERROR("Didn't expect a compressed lookup table!");
+ ERROR("Ask the author to implement support for this.");
+ return WIMLIB_ERR_COMPRESSED_LOOKUP_TABLE;
}
- num_entries = w->hdr.lookup_table_res_entry.original_size /
+ num_entries = w->hdr.lookup_table_res_entry.size /
WIM_LOOKUP_TABLE_ENTRY_DISK_SIZE;
table = new_lookup_table(num_entries * 2 + 1);
if (!table)
return WIMLIB_ERR_NOMEM;
w->current_image = 0;
- while (num_entries--) {
- const u8 *p;
-
- if (fread(buf, 1, sizeof(buf), w->fp) != sizeof(buf)) {
- if (feof(w->fp)) {
- ERROR("Unexpected EOF in WIM lookup table!");
- } else {
- ERROR_WITH_ERRNO("Error reading WIM lookup "
- "table");
+ offset = w->hdr.lookup_table_res_entry.offset;
+ buf_entries_remaining = 0;
+ for (; num_entries != 0; num_entries--, buf_entries_remaining--) {
+ if (buf_entries_remaining == 0) {
+ size_t entries_to_read, bytes_to_read;
+
+ entries_to_read = min(sizeof(table_buf) /
+ WIM_LOOKUP_TABLE_ENTRY_DISK_SIZE,
+ num_entries);
+ bytes_to_read = entries_to_read *
+ WIM_LOOKUP_TABLE_ENTRY_DISK_SIZE;
+ if (full_pread(w->in_fd, table_buf,
+ bytes_to_read, offset) != bytes_to_read)
+ {
+ ERROR_WITH_ERRNO("Error reading lookup table "
+ "(offset=%"PRIu64")", offset);
+ ret = WIMLIB_ERR_READ;
+ goto out_free_lookup_table;
}
- ret = WIMLIB_ERR_READ;
- goto out_free_lookup_table;
+ offset += bytes_to_read;
+ p = table_buf;
+ buf_entries_remaining = entries_to_read;
}
cur_entry = new_lookup_table_entry();
if (!cur_entry) {
cur_entry->wim = w;
cur_entry->resource_location = RESOURCE_IN_WIM;
- p = get_resource_entry(buf, &cur_entry->resource_entry);
+ p = get_resource_entry(p, &cur_entry->resource_entry);
p = get_u16(p, &cur_entry->part_number);
p = get_u32(p, &cur_entry->refcnt);
p = get_bytes(p, SHA1_HASH_SIZE, cur_entry->hash);
}
}
- if (w->hdr.part_number == 1 &&
- w->current_image != w->hdr.image_count)
+ if (w->hdr.part_number == 1 && w->current_image != w->hdr.image_count)
{
ERROR("The WIM header says there are %u images "
"in the WIM, but we only found %d metadata "
}
-/*
- * Writes a lookup table entry to the output file.
- */
-int
-write_lookup_table_entry(struct wim_lookup_table_entry *lte, void *_out)
+static u8 *
+write_lookup_table_entry(const struct wim_lookup_table_entry *lte, u8 *buf_p)
{
- FILE *out;
- u8 buf[WIM_LOOKUP_TABLE_ENTRY_DISK_SIZE];
- u8 *p;
-
- out = _out;
+ buf_p = put_resource_entry(buf_p, <e->output_resource_entry);
+ buf_p = put_u16(buf_p, lte->part_number);
+ buf_p = put_u32(buf_p, lte->out_refcnt);
+ buf_p = put_bytes(buf_p, SHA1_HASH_SIZE, lte->hash);
+ return buf_p;
+}
- /* Don't write entries that have not had file resources or metadata
- * resources written for them. */
- if (lte->out_refcnt == 0)
- return 0;
+int
+write_lookup_table_from_stream_list(struct list_head *stream_list,
+ int out_fd,
+ struct resource_entry *out_res_entry)
+{
+ int ret;
+ off_t start_offset;
+ u8 table_buf[(BUFFER_SIZE / WIM_LOOKUP_TABLE_ENTRY_DISK_SIZE) *
+ WIM_LOOKUP_TABLE_ENTRY_DISK_SIZE];
+ u8 *buf_p;
+ size_t table_size;
+ size_t bytes_to_write;
+ struct wim_lookup_table_entry *lte;
- if (lte->output_resource_entry.flags & WIM_RESHDR_FLAG_METADATA) {
- DEBUG("Writing metadata entry at %"PRIu64" "
- "(orig size = %"PRIu64")",
- ftello(out), lte->output_resource_entry.original_size);
+ start_offset = filedes_offset(out_fd);
+ if (start_offset == -1)
+ goto write_error;
+
+ buf_p = table_buf;
+ table_size = 0;
+ list_for_each_entry(lte, stream_list, lookup_table_list) {
+ if (buf_p == table_buf + sizeof(table_buf)) {
+ bytes_to_write = sizeof(table_buf);
+ if (full_write(out_fd, table_buf,
+ bytes_to_write) != bytes_to_write)
+ goto write_error;
+ table_size += bytes_to_write;
+ buf_p = table_buf;
+ }
+ buf_p = write_lookup_table_entry(lte, buf_p);
}
-
- p = put_resource_entry(buf, <e->output_resource_entry);
- p = put_u16(p, lte->part_number);
- p = put_u32(p, lte->out_refcnt);
- p = put_bytes(p, SHA1_HASH_SIZE, lte->hash);
- if (fwrite(buf, 1, sizeof(buf), out) != sizeof(buf)) {
- ERROR_WITH_ERRNO("Failed to write lookup table entry");
- return WIMLIB_ERR_WRITE;
+ bytes_to_write = buf_p - table_buf;
+ if (bytes_to_write != 0) {
+ if (full_write(out_fd, table_buf,
+ bytes_to_write) != bytes_to_write)
+ goto write_error;
+ table_size += bytes_to_write;
}
+ out_res_entry->offset = start_offset;
+ out_res_entry->size = table_size;
+ out_res_entry->original_size = table_size;
+ out_res_entry->flags = WIM_RESHDR_FLAG_METADATA;
+ ret = 0;
+out:
+ return ret;
+write_error:
+ ERROR_WITH_ERRNO("Failed to write lookup table");
+ ret = WIMLIB_ERR_WRITE;
+ goto out;
+}
+
+static int
+append_lookup_table_entry(struct wim_lookup_table_entry *lte, void *_list)
+{
+ if (lte->out_refcnt != 0)
+ list_add_tail(<e->lookup_table_list, (struct list_head*)_list);
return 0;
}
int
write_lookup_table(WIMStruct *w, int image, struct resource_entry *out_res_entry)
{
- FILE *out = w->out_fp;
- off_t start_offset, end_offset;
- int ret;
- int start_image, end_image;
+ LIST_HEAD(stream_list);
+ int start_image;
+ int end_image;
- start_offset = ftello(out);
- if (start_offset == -1)
- return WIMLIB_ERR_WRITE;
-
- /* Write lookup table entries for metadata resources */
if (image == WIMLIB_ALL_IMAGES) {
start_image = 1;
end_image = w->hdr.image_count;
start_image = image;
end_image = image;
}
+
for (int i = start_image; i <= end_image; i++) {
struct wim_lookup_table_entry *metadata_lte;
metadata_lte = w->image_metadata[i - 1]->metadata_lte;
metadata_lte->out_refcnt = 1;
metadata_lte->output_resource_entry.flags |= WIM_RESHDR_FLAG_METADATA;
- ret = write_lookup_table_entry(metadata_lte, out);
- if (ret)
- return ret;
+ append_lookup_table_entry(metadata_lte, &stream_list);
}
-
- /* Write lookup table entries for other resources */
- ret = for_lookup_table_entry(w->lookup_table, write_lookup_table_entry, out);
- if (ret)
- return ret;
-
- /* Fill in the resource entry for the lookup table itself */
- end_offset = ftello(out);
- if (end_offset == -1)
- return WIMLIB_ERR_WRITE;
-
- out_res_entry->offset = start_offset;
- out_res_entry->size = end_offset - start_offset;
- out_res_entry->original_size = end_offset - start_offset;
- out_res_entry->flags = WIM_RESHDR_FLAG_METADATA;
- return 0;
+ for_lookup_table_entry(w->lookup_table,
+ append_lookup_table_entry,
+ &stream_list);
+ return write_lookup_table_from_stream_list(&stream_list,
+ w->out_fd,
+ out_res_entry);
}
-
int
-lte_zero_real_refcnt(struct wim_lookup_table_entry *lte, void *ignore)
+lte_zero_real_refcnt(struct wim_lookup_table_entry *lte, void *_ignore)
{
lte->real_refcnt = 0;
return 0;
}
int
-lte_zero_out_refcnt(struct wim_lookup_table_entry *lte, void *ignore)
+lte_zero_out_refcnt(struct wim_lookup_table_entry *lte, void *_ignore)
{
lte->out_refcnt = 0;
return 0;
}
int
-lte_free_extracted_file(struct wim_lookup_table_entry *lte, void *ignore)
+lte_free_extracted_file(struct wim_lookup_table_entry *lte, void *_ignore)
{
if (lte->extracted_file != NULL) {
FREE(lte->extracted_file);
break;
#ifdef __WIN32__
case RESOURCE_WIN32:
-#endif
+ case RESOURCE_WIN32_ENCRYPTED:
+#else
case RESOURCE_IN_FILE_ON_DISK:
+#endif
tfprintf(out, T("File on Disk = `%"TS"'\n"),
lte->file_on_disk);
break;
+#ifdef WITH_FUSE
case RESOURCE_IN_STAGING_FILE:
tfprintf(out, T("Staging File = `%"TS"'\n"),
lte->staging_file_name);
break;
+#endif
default:
break;
}
}
#endif
+/*
+ * XXX Probably should store the compression type directly in the lookup table
+ * entry
+ */
+int
+wim_resource_compression_type(const struct wim_lookup_table_entry *lte)
+{
+ if (!(lte->resource_entry.flags & WIM_RESHDR_FLAG_COMPRESSED)
+ || lte->resource_location != RESOURCE_IN_WIM)
+ return WIMLIB_COMPRESSION_TYPE_NONE;
+ return wimlib_get_compression_type(lte->wim);
+}
+
/* Resolve an inode's lookup table entries
*
* This replaces the SHA1 hash fields (which are used to lookup an entry in the
return inode_stream_lte_unresolved(inode, stream_idx, table);
}
+struct wim_lookup_table_entry *
+inode_unnamed_lte_resolved(const struct wim_inode *inode)
+{
+ wimlib_assert(inode->i_resolved);
+ for (unsigned i = 0; i <= inode->i_num_ads; i++) {
+ if (inode_stream_name_nbytes(inode, i) == 0 &&
+ !is_zero_hash(inode_stream_hash_resolved(inode, i)))
+ {
+ return inode_stream_lte_resolved(inode, i);
+ }
+ }
+ return NULL;
+}
+
+struct wim_lookup_table_entry *
+inode_unnamed_lte_unresolved(const struct wim_inode *inode,
+ const struct wim_lookup_table *table)
+{
+ wimlib_assert(!inode->i_resolved);
+ for (unsigned i = 0; i <= inode->i_num_ads; i++) {
+ if (inode_stream_name_nbytes(inode, i) == 0 &&
+ !is_zero_hash(inode_stream_hash_unresolved(inode, i)))
+ {
+ return inode_stream_lte_unresolved(inode, i, table);
+ }
+ }
+ return NULL;
+}
/* Return the lookup table entry for the unnamed data stream of an inode, or
* NULL if there is none.
return NULL;
}
+/* Calculate the SHA1 message digest of a stream and move it from the list of
+ * unhashed streams to the stream lookup table, possibly joining it with an
+ * existing lookup table entry for an identical stream.
+ *
+ * @lte: An unhashed lookup table entry.
+ * @lookup_table: Lookup table for the WIM.
+ * @lte_ret: On success, write a pointer to the resulting lookup table
+ * entry to this location. This will be the same as @lte
+ * if it was inserted into the lookup table, or different if
+ * a duplicate stream was found.
+ *
+ * Returns 0 on success; nonzero if there is an error reading the stream.
+ */
int
hash_unhashed_stream(struct wim_lookup_table_entry *lte,
struct wim_lookup_table *lookup_table,
/* No duplicate stream, so we need to insert
* this stream into the lookup table and treat
* it as a hashed stream. */
- list_del(<e->unhashed_list);
lookup_table_insert(lookup_table, lte);
- lte->out_refcnt = lte->refcnt;
lte->unhashed = 0;
}
if (lte_ret)
git://wimlib.net / wimlib / blobdiff