X-Git-Url: https://wimlib.net/git/?p=wimlib;a=blobdiff_plain;f=src%2Fwim.c;h=fc15a21db00c6a541091e770a29ca7eef8863260;hp=a62be39e05709c8f8a66f30d3461b1ac8e39700c;hb=ce4af1bc0291503cae1b053d53efbc4123c50be5;hpb=f24f8409b041727329e980fdc81e84a7c9b00e5b

diff --git a/src/wim.c b/src/wim.c
index a62be39e..fc15a21d 100644
--- a/src/wim.c
+++ b/src/wim.c
@@ -38,6 +38,9 @@
 #include "wimlib/security.h"
 #include "wimlib/wim.h"
 #include "wimlib/xml.h"
+#include "wimlib/compressor_ops.h"
+#include "wimlib/decompressor_ops.h"
+#include "wimlib/version.h"
 
 #ifdef __WIN32__
 #  include "wimlib/win32.h" /* for realpath() replacement */
@@ -54,22 +57,31 @@
 #include <unistd.h>
 
 static int
-image_print_metadata(WIMStruct *wim)
+wim_default_pack_compression_type(void)
 {
-	DEBUG("Printing metadata for image %d", wim->current_image);
-	print_wim_security_data(wim_security_data(wim));
-	return for_dentry_in_tree(wim_root_dentry(wim), print_dentry,
-				  wim->lookup_table);
+	return WIMLIB_COMPRESSION_TYPE_LZMS;
 }
 
+static u32
+wim_default_pack_chunk_size(int ctype) {
+	switch (ctype) {
+	case WIMLIB_COMPRESSION_TYPE_LZMS:
+		return 1U << 26; /* 67108864  */
+	default:
+		return 1U << 15; /* 32768     */
+	}
+}
 
 static WIMStruct *
 new_wim_struct(void)
 {
 	WIMStruct *wim = CALLOC(1, sizeof(WIMStruct));
 	if (wim) {
-		wim->in_fd.fd = -1;
-		wim->out_fd.fd = -1;
+		filedes_invalidate(&wim->in_fd);
+		filedes_invalidate(&wim->out_fd);
+		wim->out_pack_compression_type = wim_default_pack_compression_type();
+		wim->out_pack_chunk_size = wim_default_pack_chunk_size(
+						wim->out_pack_compression_type);
 		INIT_LIST_HEAD(&wim->subwims);
 	}
 	return wim;
@@ -108,40 +120,17 @@ wim_chunk_size_valid(u32 chunk_size, int ctype)
 	 * 25		33554432
 	 * 26		67108864
 	 */
+
+	/* See the documentation for the --chunk-size option of `wimlib-imagex
+	 * capture' for information about allowed chunk sizes.  */
 	switch (ctype) {
 	case WIMLIB_COMPRESSION_TYPE_LZX:
-		/* For LZX compression, the chunk size corresponds to the LZX
-		 * window size, which according the LZX specification can be any
-		 * power of 2 between 2^15 and 2^21, inclusively.  All these are
-		 * supported by wimlib; however, unfortunately only 2^15 is
-		 * supported by WIMGAPI[1] so this value is used by default.
-		 *
-		 * [1] WIMGAPI (Windows 7) attempts to decompress LZX chunk
-		 * sizes > 2^15 but seems to have bug(s) that cause it to fail
-		 * or crash.  (I tried several tweaks to the LZX data but none
-		 * resulted in successful decompression.)  WIMGAPI (Windows 8)
-		 * appears to refuse to open WIMs with chunk size > 2^15
-		 * entirely.  */
 		return order >= 15 && order <= 21;
 
 	case WIMLIB_COMPRESSION_TYPE_XPRESS:
-		/* WIMGAPI (Windows 7) didn't seem to support XPRESS chunk size
-		 * below 32768 bytes, but larger power-of-two sizes appear to be
-		 * supported.  67108864 was the largest size that worked.
-		 * (Note, however, that the offsets of XPRESS matches are still
-		 * limited to 65535 bytes even when a much larger chunk size is
-		 * used!)
-		 *
-		 * WIMGAPI (Windows 8) seemed to have removed the support for
-		 * larger XPRESS chunk sizes and will refuse to open such WIMs.
-		 *
-		 * 2^15 = 32768 is the default value used for compatibility, but
-		 * wimlib can actually use up to 2^26.  */
-		return order >= 15 && order <= 26;
-
+		return order >= 12 && order <= 26;
 	case WIMLIB_COMPRESSION_TYPE_LZMS:
-		/* TODO */
-		return 131072;
+		return order >= 15 && order <= 30;
 	}
 	return false;
 }
@@ -152,14 +141,19 @@ wim_chunk_size_valid(u32 chunk_size, int ctype)
 static u32
 wim_default_chunk_size(int ctype)
 {
-	return 32768;
+	switch (ctype) {
+	case WIMLIB_COMPRESSION_TYPE_LZMS:
+		return 1U << 17; /* 131072  */
+	default:
+		return 1U << 15; /* 32768   */
+	}
 }
 
 /*
- * Calls a function on images in the WIM.  If @image is WIMLIB_ALL_IMAGES, @visitor
- * is called on the WIM once for each image, with each image selected as the
- * current image in turn.  If @image is a certain image, @visitor is called on
- * the WIM only once, with that image selected.
+ * Calls a function on images in the WIM.  If @image is WIMLIB_ALL_IMAGES,
+ * @visitor is called on the WIM once for each image, with each image selected
+ * as the current image in turn.  If @image is a certain image, @visitor is
+ * called on the WIM only once, with that image selected.
  */
 int
 for_image(WIMStruct *wim, int image, int (*visitor)(WIMStruct *))
@@ -229,6 +223,125 @@ out_free:
 	return ret;
 }
 
+static void
+destroy_image_metadata(struct wim_image_metadata *imd,
+		       struct wim_lookup_table *table,
+		       bool free_metadata_lte)
+{
+	free_dentry_tree(imd->root_dentry, table);
+	imd->root_dentry = NULL;
+	free_wim_security_data(imd->security_data);
+	imd->security_data = NULL;
+
+	if (free_metadata_lte) {
+		free_lookup_table_entry(imd->metadata_lte);
+		imd->metadata_lte = NULL;
+	}
+	if (table == NULL) {
+		struct wim_lookup_table_entry *lte, *tmp;
+		list_for_each_entry_safe(lte, tmp, &imd->unhashed_streams, unhashed_list)
+			free_lookup_table_entry(lte);
+	}
+	INIT_LIST_HEAD(&imd->unhashed_streams);
+	INIT_LIST_HEAD(&imd->inode_list);
+#ifdef WITH_NTFS_3G
+	if (imd->ntfs_vol) {
+		do_ntfs_umount(imd->ntfs_vol);
+		imd->ntfs_vol = NULL;
+	}
+#endif
+}
+
+void
+put_image_metadata(struct wim_image_metadata *imd,
+		   struct wim_lookup_table *table)
+{
+	if (imd && --imd->refcnt == 0) {
+		destroy_image_metadata(imd, table, true);
+		FREE(imd);
+	}
+}
+
+/* Appends the specified image metadata structure to the array of image metadata
+ * for a WIM, and increments the image count. */
+int
+append_image_metadata(WIMStruct *wim, struct wim_image_metadata *imd)
+{
+	struct wim_image_metadata **imd_array;
+
+	DEBUG("Reallocating image metadata array for image_count = %u",
+	      wim->hdr.image_count + 1);
+	imd_array = REALLOC(wim->image_metadata,
+			    sizeof(wim->image_metadata[0]) * (wim->hdr.image_count + 1));
+
+	if (imd_array == NULL)
+		return WIMLIB_ERR_NOMEM;
+	wim->image_metadata = imd_array;
+	imd_array[wim->hdr.image_count++] = imd;
+	return 0;
+}
+
+struct wim_image_metadata *
+new_image_metadata(void)
+{
+	struct wim_image_metadata *imd;
+
+	imd = CALLOC(1, sizeof(*imd));
+	if (imd) {
+		imd->refcnt = 1;
+		INIT_LIST_HEAD(&imd->inode_list);
+		INIT_LIST_HEAD(&imd->unhashed_streams);
+		DEBUG("Created new image metadata (refcnt=1)");
+	} else {
+		ERROR_WITH_ERRNO("Failed to allocate new image metadata structure");
+	}
+	return imd;
+}
+
+static struct wim_image_metadata **
+new_image_metadata_array(unsigned num_images)
+{
+	struct wim_image_metadata **imd_array;
+
+	DEBUG("Creating new image metadata array for %u images",
+	      num_images);
+
+	imd_array = CALLOC(num_images, sizeof(imd_array[0]));
+
+	if (imd_array == NULL) {
+		ERROR("Failed to allocate memory for %u image metadata structures",
+		      num_images);
+		return NULL;
+	}
+	for (unsigned i = 0; i < num_images; i++) {
+		imd_array[i] = new_image_metadata();
+		if (imd_array[i] == NULL) {
+			for (unsigned j = 0; j < i; j++)
+				put_image_metadata(imd_array[j], NULL);
+			FREE(imd_array);
+			return NULL;
+		}
+	}
+	return imd_array;
+}
+
+
+/*
+ * Load the metadata for the specified WIM image into memory and set it
+ * as the WIMStruct's currently selected image.
+ *
+ * @wim
+ *	The WIMStruct for the WIM.
+ * @image
+ *	The 1-based index of the image in the WIM to select.
+ *
+ * On success, 0 will be returned, wim->current_image will be set to
+ * @image, and wim_get_current_image_metadata() can be used to retrieve
+ * metadata information for the image.
+ *
+ * On failure, WIMLIB_ERR_INVALID_IMAGE, WIMLIB_ERR_METADATA_NOT_FOUND,
+ * or another error code will be returned.
+ */
 int
 select_wim_image(WIMStruct *wim, int image)
 {
@@ -258,8 +371,8 @@ select_wim_image(WIMStruct *wim, int image)
 		return WIMLIB_ERR_METADATA_NOT_FOUND;
 	}
 
-	/* If a valid image is currently selected, it can be freed if it is not
-	 * modified.  */
+	/* If a valid image is currently selected, its metadata can be freed if
+	 * it has not been modified.  */
 	if (wim->current_image != WIMLIB_NO_IMAGE) {
 		imd = wim_get_current_image_metadata(wim);
 		if (!imd->modified) {
@@ -273,11 +386,6 @@ select_wim_image(WIMStruct *wim, int image)
 	if (imd->root_dentry || imd->modified) {
 		ret = 0;
 	} else {
-		#ifdef ENABLE_DEBUG
-		DEBUG("Reading metadata resource specified by the following "
-		      "lookup table entry:");
-		print_lookup_table_entry(imd->metadata_lte, stderr);
-		#endif
 		ret = read_metadata_resource(wim, imd);
 		if (ret)
 			wim->current_image = WIMLIB_NO_IMAGE;
@@ -297,6 +405,8 @@ wimlib_get_compression_type_string(int ctype)
 			return T("LZX");
 		case WIMLIB_COMPRESSION_TYPE_XPRESS:
 			return T("XPRESS");
+		case WIMLIB_COMPRESSION_TYPE_LZMS:
+			return T("LZMS");
 		default:
 			return T("Invalid");
 	}
@@ -359,14 +469,6 @@ wimlib_print_available_images(const WIMStruct *wim, int image)
 		print_image_info(wim->wim_info, i);
 }
 
-
-/* API function documented in wimlib.h  */
-WIMLIBAPI int
-wimlib_print_metadata(WIMStruct *wim, int image)
-{
-	return for_image(wim, image, image_print_metadata);
-}
-
 /* API function documented in wimlib.h  */
 WIMLIBAPI int
 wimlib_get_wim_info(WIMStruct *wim, struct wimlib_wim_info *info)
@@ -376,7 +478,7 @@ wimlib_get_wim_info(WIMStruct *wim, struct wimlib_wim_info *info)
 	info->image_count = wim->hdr.image_count;
 	info->boot_index = wim->hdr.boot_idx;
 	info->wim_version = wim->hdr.wim_version;
-	info->chunk_size = wim->hdr.chunk_size;
+	info->chunk_size = wim->chunk_size;
 	info->part_number = wim->hdr.part_number;
 	info->total_parts = wim->hdr.total_parts;
 	info->compression_type = wim->compression_type;
@@ -402,6 +504,12 @@ wimlib_set_wim_info(WIMStruct *wim, const struct wimlib_wim_info *info, int whic
 {
 	int ret;
 
+	if (which & ~(WIMLIB_CHANGE_READONLY_FLAG |
+		      WIMLIB_CHANGE_GUID |
+		      WIMLIB_CHANGE_BOOT_INDEX |
+		      WIMLIB_CHANGE_RPFIX_FLAG))
+		return WIMLIB_ERR_INVALID_PARAM;
+
 	if (which & WIMLIB_CHANGE_READONLY_FLAG) {
 		if (info->is_marked_readonly)
 			wim->hdr.flags |= WIM_HDR_FLAG_READONLY;
@@ -416,10 +524,8 @@ wimlib_set_wim_info(WIMStruct *wim, const struct wimlib_wim_info *info, int whic
 	if (ret)
 		return ret;
 
-	if (which & WIMLIB_CHANGE_GUID) {
-		memcpy(wim->hdr.guid, info->guid, WIM_GID_LEN);
-		wim->guid_set_explicitly = 1;
-	}
+	if (which & WIMLIB_CHANGE_GUID)
+		memcpy(wim->hdr.guid, info->guid, WIM_GUID_LEN);
 
 	if (which & WIMLIB_CHANGE_BOOT_INDEX) {
 		if (info->boot_index > wim->hdr.image_count) {
@@ -439,85 +545,113 @@ wimlib_set_wim_info(WIMStruct *wim, const struct wimlib_wim_info *info, int whic
 	return 0;
 }
 
-/* API function documented in wimlib.h  */
-WIMLIBAPI int
-wimlib_set_output_compression_type(WIMStruct *wim, int ctype)
+static int
+set_out_ctype(int ctype, u8 *out_ctype_p)
 {
 	switch (ctype) {
-	case WIMLIB_COMPRESSION_TYPE_INVALID:
-		break;
 	case WIMLIB_COMPRESSION_TYPE_NONE:
 	case WIMLIB_COMPRESSION_TYPE_LZX:
 	case WIMLIB_COMPRESSION_TYPE_XPRESS:
-		wim->out_compression_type = ctype;
-
-		/* Reset the chunk size if it's no longer valid.  */
-		if (!wim_chunk_size_valid(wim->out_chunk_size,
-					  wim->out_compression_type))
-			wim->out_chunk_size = wim_default_chunk_size(wim->out_compression_type);
+	case WIMLIB_COMPRESSION_TYPE_LZMS:
+		*out_ctype_p = ctype;
 		return 0;
 	}
-	return WIMLIB_ERR_INVALID_PARAM;
+	return WIMLIB_ERR_INVALID_COMPRESSION_TYPE;
 }
 
 /* API function documented in wimlib.h  */
 WIMLIBAPI int
-wimlib_set_output_chunk_size(WIMStruct *wim, uint32_t chunk_size)
+wimlib_set_output_compression_type(WIMStruct *wim, int ctype)
 {
-	if (!wim_chunk_size_valid(chunk_size, wim->out_compression_type)) {
+	int ret = set_out_ctype(ctype, &wim->out_compression_type);
+	if (ret)
+		return ret;
+
+	/* Reset the chunk size if it's no longer valid.  */
+	if (!wim_chunk_size_valid(wim->out_chunk_size, ctype))
+		wim->out_chunk_size = wim_default_chunk_size(ctype);
+	return 0;
+}
+
+/* API function documented in wimlib.h  */
+WIMLIBAPI int
+wimlib_set_output_pack_compression_type(WIMStruct *wim, int ctype)
+{
+	int ret = set_out_ctype(ctype, &wim->out_pack_compression_type);
+	if (ret)
+		return ret;
+
+	/* Reset the chunk size if it's no longer valid.  */
+	if (!wim_chunk_size_valid(wim->out_pack_chunk_size, ctype))
+		wim->out_pack_chunk_size = wim_default_pack_chunk_size(ctype);
+	return 0;
+}
+
+static int
+set_out_chunk_size(u32 chunk_size, int ctype, u32 *out_chunk_size_p)
+{
+	if (!wim_chunk_size_valid(chunk_size, ctype)) {
 		ERROR("Invalid chunk size (%"PRIu32" bytes) "
 		      "for compression type %"TS"!",
 		      chunk_size,
-		      wimlib_get_compression_type_string(wim->out_compression_type));
-		switch (wim->out_compression_type) {
-		case WIMLIB_COMPRESSION_TYPE_XPRESS:
-			ERROR("Valid chunk sizes for XPRESS are "
-			      "32768, 65536, 131072, ..., 67108864.");
-			break;
-		case WIMLIB_COMPRESSION_TYPE_LZX:
-			ERROR("Valid chunk sizes for LZX are "
-			      "32768, 65536, 131072, ..., 2097152.");
-			break;
-		}
+		      wimlib_get_compression_type_string(ctype));
 		return WIMLIB_ERR_INVALID_CHUNK_SIZE;
 	}
-	if (chunk_size != 32768) {
-		WARNING  ("Changing the compression chunk size to any value other than\n"
-		"          the default of 32768 bytes eliminates compatibility with\n"
-		"          Microsoft's software!");
-	}
-	wim->out_chunk_size = chunk_size;
+
+	*out_chunk_size_p = chunk_size;
 	return 0;
 }
 
-static int
-do_open_wim(const tchar *filename, struct filedes *fd_ret)
+/* API function documented in wimlib.h  */
+WIMLIBAPI int
+wimlib_set_output_chunk_size(WIMStruct *wim, uint32_t chunk_size)
 {
-	int raw_fd;
+	if (chunk_size == 0) {
+		wim->out_chunk_size =
+			wim_default_chunk_size(wim->out_compression_type);
+		return 0;
+	}
 
-	raw_fd = topen(filename, O_RDONLY | O_BINARY);
-	if (raw_fd < 0) {
-		ERROR_WITH_ERRNO("Can't open \"%"TS"\" read-only", filename);
-		return WIMLIB_ERR_OPEN;
+	return set_out_chunk_size(chunk_size,
+				  wim->out_compression_type,
+				  &wim->out_chunk_size);
+}
+
+/* API function documented in wimlib.h  */
+WIMLIBAPI int
+wimlib_set_output_pack_chunk_size(WIMStruct *wim, uint32_t chunk_size)
+{
+	if (chunk_size == 0) {
+		wim->out_pack_chunk_size =
+			wim_default_pack_chunk_size(wim->out_pack_compression_type);
+		return 0;
 	}
-	filedes_init(fd_ret, raw_fd);
-	return 0;
+
+	return set_out_chunk_size(chunk_size,
+				  wim->out_pack_compression_type,
+				  &wim->out_pack_chunk_size);
 }
 
-int
-reopen_wim(WIMStruct *wim)
+WIMLIBAPI void
+wimlib_register_progress_function(WIMStruct *wim,
+				  wimlib_progress_func_t progfunc,
+				  void *progctx)
 {
-	wimlib_assert(!filedes_valid(&wim->in_fd));
-	return do_open_wim(wim->filename, &wim->in_fd);
+	wim->progfunc = progfunc;
+	wim->progctx = progctx;
 }
 
-int
-close_wim(WIMStruct *wim)
+static int
+open_wim_file(const tchar *filename, struct filedes *fd_ret)
 {
-	if (filedes_valid(&wim->in_fd)) {
-		filedes_close(&wim->in_fd);
-		filedes_invalidate(&wim->in_fd);
+	int raw_fd;
+
+	raw_fd = topen(filename, O_RDONLY | O_BINARY);
+	if (raw_fd < 0) {
+		ERROR_WITH_ERRNO("Can't open \"%"TS"\" read-only", filename);
+		return WIMLIB_ERR_OPEN;
 	}
+	filedes_init(fd_ret, raw_fd);
 	return 0;
 }
 
@@ -526,8 +660,7 @@ close_wim(WIMStruct *wim)
  * lookup table, and optionally checks the integrity.
  */
 static int
-begin_read(WIMStruct *wim, const void *wim_filename_or_fd,
-	   int open_flags, wimlib_progress_func_t progress_func)
+begin_read(WIMStruct *wim, const void *wim_filename_or_fd, int open_flags)
 {
 	int ret;
 	int xml_num_images;
@@ -539,7 +672,7 @@ begin_read(WIMStruct *wim, const void *wim_filename_or_fd,
 		wim->in_fd.is_pipe = 1;
 	} else {
 		wimfile = wim_filename_or_fd;
-		ret = do_open_wim(wimfile, &wim->in_fd);
+		ret = open_wim_file(wimfile, &wim->in_fd);
 		if (ret)
 			return ret;
 
@@ -600,13 +733,11 @@ begin_read(WIMStruct *wim, const void *wim_filename_or_fd,
 	if (wim->hdr.flags & WIM_HDR_FLAG_COMPRESSION) {
 		if (wim->hdr.flags & WIM_HDR_FLAG_COMPRESS_LZX) {
 			wim->compression_type = WIMLIB_COMPRESSION_TYPE_LZX;
-		} else if (wim->hdr.flags & WIM_HDR_FLAG_COMPRESS_XPRESS) {
+		} else if (wim->hdr.flags & (WIM_HDR_FLAG_COMPRESS_XPRESS |
+					     WIM_HDR_FLAG_COMPRESS_XPRESS_2)) {
 			wim->compression_type = WIMLIB_COMPRESSION_TYPE_XPRESS;
-	#if 0
-		/* TODO */
 		} else if (wim->hdr.flags & WIM_HDR_FLAG_COMPRESS_LZMS) {
 			wim->compression_type = WIMLIB_COMPRESSION_TYPE_LZMS;
-	#endif
 		} else {
 			ERROR("The compression flag is set on \"%"TS"\", but "
 			      "a flag for a recognized format is not",
@@ -619,7 +750,8 @@ begin_read(WIMStruct *wim, const void *wim_filename_or_fd,
 	wim->out_compression_type = wim->compression_type;
 
 	/* Check and cache the chunk size.  */
-	wim->chunk_size = wim->out_chunk_size = wim->hdr.chunk_size;
+	wim->chunk_size = wim->hdr.chunk_size;
+	wim->out_chunk_size = wim->chunk_size;
 	if (!wim_chunk_size_valid(wim->chunk_size, wim->compression_type)) {
 		ERROR("Invalid chunk size (%"PRIu32" bytes) "
 		      "for compression type %"TS"!",
@@ -629,7 +761,7 @@ begin_read(WIMStruct *wim, const void *wim_filename_or_fd,
 	}
 
 	if (open_flags & WIMLIB_OPEN_FLAG_CHECK_INTEGRITY) {
-		ret = check_wim_integrity(wim, progress_func);
+		ret = check_wim_integrity(wim);
 		if (ret == WIM_INTEGRITY_NONEXISTENT) {
 			WARNING("No integrity information for `%"TS"'; skipping "
 				"integrity check.", wimfile);
@@ -652,9 +784,6 @@ begin_read(WIMStruct *wim, const void *wim_filename_or_fd,
 		if (wim->lookup_table == NULL)
 			return WIMLIB_ERR_NOMEM;
 	} else {
-		ret = read_wim_lookup_table(wim);
-		if (ret)
-			return ret;
 
 		ret = read_wim_xml_data(wim);
 		if (ret)
@@ -668,6 +797,11 @@ begin_read(WIMStruct *wim, const void *wim_filename_or_fd,
 			      "<IMAGE> element per image.", wim->hdr.image_count);
 			return WIMLIB_ERR_IMAGE_COUNT;
 		}
+
+		ret = read_wim_lookup_table(wim);
+		if (ret)
+			return ret;
+
 		DEBUG("Done beginning read of WIM file `%"TS"'.", wimfile);
 	}
 	return 0;
@@ -675,7 +809,8 @@ begin_read(WIMStruct *wim, const void *wim_filename_or_fd,
 
 int
 open_wim_as_WIMStruct(const void *wim_filename_or_fd, int open_flags,
-		      WIMStruct **wim_ret, wimlib_progress_func_t progress_func)
+		      WIMStruct **wim_ret,
+		      wimlib_progress_func_t progfunc, void *progctx)
 {
 	WIMStruct *wim;
 	int ret;
@@ -694,7 +829,10 @@ open_wim_as_WIMStruct(const void *wim_filename_or_fd, int open_flags,
 	if (wim == NULL)
 		return WIMLIB_ERR_NOMEM;
 
-	ret = begin_read(wim, wim_filename_or_fd, open_flags, progress_func);
+	wim->progfunc = progfunc;
+	wim->progctx = progctx;
+
+	ret = begin_read(wim, wim_filename_or_fd, open_flags);
 	if (ret) {
 		wimlib_free(wim);
 		return ret;
@@ -707,115 +845,25 @@ open_wim_as_WIMStruct(const void *wim_filename_or_fd, int open_flags,
 
 /* API function documented in wimlib.h  */
 WIMLIBAPI int
-wimlib_open_wim(const tchar *wimfile, int open_flags,
-		WIMStruct **wim_ret, wimlib_progress_func_t progress_func)
+wimlib_open_wim_with_progress(const tchar *wimfile, int open_flags,
+			      WIMStruct **wim_ret,
+			      wimlib_progress_func_t progfunc, void *progctx)
 {
-	open_flags &= WIMLIB_OPEN_MASK_PUBLIC;
-	return open_wim_as_WIMStruct(wimfile, open_flags, wim_ret,
-				     progress_func);
-}
-
-void
-destroy_image_metadata(struct wim_image_metadata *imd,
-		       struct wim_lookup_table *table,
-		       bool free_metadata_lte)
-{
-	free_dentry_tree(imd->root_dentry, table);
-	imd->root_dentry = NULL;
-	free_wim_security_data(imd->security_data);
-	imd->security_data = NULL;
-
-	if (free_metadata_lte) {
-		free_lookup_table_entry(imd->metadata_lte);
-		imd->metadata_lte = NULL;
-	}
-	if (table == NULL) {
-		struct wim_lookup_table_entry *lte, *tmp;
-		list_for_each_entry_safe(lte, tmp, &imd->unhashed_streams, unhashed_list)
-			free_lookup_table_entry(lte);
-	}
-	INIT_LIST_HEAD(&imd->unhashed_streams);
-	INIT_LIST_HEAD(&imd->inode_list);
-#ifdef WITH_NTFS_3G
-	if (imd->ntfs_vol) {
-		do_ntfs_umount(imd->ntfs_vol);
-		imd->ntfs_vol = NULL;
-	}
-#endif
-}
-
-void
-put_image_metadata(struct wim_image_metadata *imd,
-		   struct wim_lookup_table *table)
-{
-	if (imd && --imd->refcnt == 0) {
-		destroy_image_metadata(imd, table, true);
-		FREE(imd);
-	}
-}
-
-/* Appends the specified image metadata structure to the array of image metadata
- * for a WIM, and increments the image count. */
-int
-append_image_metadata(WIMStruct *wim, struct wim_image_metadata *imd)
-{
-	struct wim_image_metadata **imd_array;
-
-	DEBUG("Reallocating image metadata array for image_count = %u",
-	      wim->hdr.image_count + 1);
-	imd_array = REALLOC(wim->image_metadata,
-			    sizeof(wim->image_metadata[0]) * (wim->hdr.image_count + 1));
-
-	if (imd_array == NULL)
-		return WIMLIB_ERR_NOMEM;
-	wim->image_metadata = imd_array;
-	imd_array[wim->hdr.image_count++] = imd;
-	return 0;
-}
-
-
-struct wim_image_metadata *
-new_image_metadata(void)
-{
-	struct wim_image_metadata *imd;
+	if (open_flags & ~(WIMLIB_OPEN_FLAG_CHECK_INTEGRITY |
+			   WIMLIB_OPEN_FLAG_ERROR_IF_SPLIT |
+			   WIMLIB_OPEN_FLAG_WRITE_ACCESS))
+		return WIMLIB_ERR_INVALID_PARAM;
 
-	imd = CALLOC(1, sizeof(*imd));
-	if (imd) {
-		imd->refcnt = 1;
-		INIT_LIST_HEAD(&imd->inode_list);
-		INIT_LIST_HEAD(&imd->unhashed_streams);
-		DEBUG("Created new image metadata (refcnt=1)");
-	} else {
-		ERROR_WITH_ERRNO("Failed to allocate new image metadata structure");
-	}
-	return imd;
+	return open_wim_as_WIMStruct(wimfile, open_flags, wim_ret,
+				     progfunc, progctx);
 }
 
-struct wim_image_metadata **
-new_image_metadata_array(unsigned num_images)
+/* API function documented in wimlib.h  */
+WIMLIBAPI int
+wimlib_open_wim(const tchar *wimfile, int open_flags, WIMStruct **wim_ret)
 {
-	struct wim_image_metadata **imd_array;
-
-	DEBUG("Creating new image metadata array for %u images",
-	      num_images);
-
-	imd_array = CALLOC(num_images, sizeof(imd_array[0]));
-
-	if (imd_array == NULL) {
-		ERROR("Failed to allocate memory for %u image metadata structures",
-		      num_images);
-		return NULL;
-	}
-	for (unsigned i = 0; i < num_images; i++) {
-		imd_array[i] = new_image_metadata();
-		if (imd_array[i] == NULL) {
-			for (unsigned j = 0; j < i; j++)
-				put_image_metadata(imd_array[j], NULL);
-			FREE(imd_array);
-			return NULL;
-		}
-	}
-	return imd_array;
+	return wimlib_open_wim_with_progress(wimfile, open_flags, wim_ret,
+					     NULL, NULL);
 }
 
 /* Checksum all streams that are unhashed (other than the metadata streams),
@@ -833,9 +881,12 @@ wim_checksum_unhashed_streams(WIMStruct *wim)
 		struct wim_lookup_table_entry *lte, *tmp;
 		struct wim_image_metadata *imd = wim->image_metadata[i];
 		image_for_each_unhashed_stream_safe(lte, tmp, imd) {
-			ret = hash_unhashed_stream(lte, wim->lookup_table, NULL);
+			struct wim_lookup_table_entry *new_lte;
+			ret = hash_unhashed_stream(lte, wim->lookup_table, &new_lte);
 			if (ret)
 				return ret;
+			if (new_lte != lte)
+				free_lookup_table_entry(lte);
 		}
 	}
 	return 0;
@@ -924,10 +975,10 @@ wimlib_free(WIMStruct *wim)
 	if (filedes_valid(&wim->out_fd))
 		filedes_close(&wim->out_fd);
 
-	wimlib_lzx_free_context(wim->lzx_context);
-
 	free_lookup_table(wim->lookup_table);
 
+	wimlib_free_decompressor(wim->decompressor);
+
 	FREE(wim->filename);
 	free_wim_info(wim->wim_info);
 	if (wim->image_metadata) {
@@ -953,15 +1004,35 @@ test_locale_ctype_utf8(void)
 #endif
 }
 
+/* API function documented in wimlib.h  */
+WIMLIBAPI u32
+wimlib_get_version(void)
+{
+	return WIMLIB_VERSION_CODE;
+}
+
+static bool lib_initialized = false;
+
 /* API function documented in wimlib.h  */
 WIMLIBAPI int
 wimlib_global_init(int init_flags)
 {
-	static bool already_inited = false;
-	int ret;
-
-	if (already_inited)
+	if (lib_initialized)
 		return 0;
+
+#ifdef ENABLE_ERROR_MESSAGES
+	if (wimlib_error_file == NULL)
+		wimlib_error_file = stderr;
+#endif
+
+	if (init_flags & ~(WIMLIB_INIT_FLAG_ASSUME_UTF8 |
+			   WIMLIB_INIT_FLAG_DONT_ACQUIRE_PRIVILEGES |
+			   WIMLIB_INIT_FLAG_STRICT_CAPTURE_PRIVILEGES |
+			   WIMLIB_INIT_FLAG_STRICT_APPLY_PRIVILEGES |
+			   WIMLIB_INIT_FLAG_DEFAULT_CASE_SENSITIVE |
+			   WIMLIB_INIT_FLAG_DEFAULT_CASE_INSENSITIVE))
+		return WIMLIB_ERR_INVALID_PARAM;
+
 	libxml_global_init();
 	if (!(init_flags & WIMLIB_INIT_FLAG_ASSUME_UTF8)) {
 		wimlib_mbs_is_utf8 = test_locale_ctype_utf8();
@@ -971,23 +1042,36 @@ wimlib_global_init(int init_flags)
 	#endif
 	}
 #ifdef __WIN32__
-	ret = win32_global_init(init_flags);
-	if (ret)
-		return ret;
-#else
-	ret = 0;
+	{
+		int ret = win32_global_init(init_flags);
+		if (ret)
+			return ret;
+	}
 #endif
-	already_inited = true;
-	return ret;
+	iconv_global_init();
+	init_upcase();
+	if (init_flags & WIMLIB_INIT_FLAG_DEFAULT_CASE_SENSITIVE)
+		default_ignore_case = false;
+	else if (init_flags & WIMLIB_INIT_FLAG_DEFAULT_CASE_INSENSITIVE)
+		default_ignore_case = true;
+	lib_initialized = true;
+	return 0;
 }
 
 /* API function documented in wimlib.h  */
 WIMLIBAPI void
 wimlib_global_cleanup(void)
 {
+	if (!lib_initialized)
+		return;
 	libxml_global_cleanup();
 	iconv_global_cleanup();
 #ifdef __WIN32__
 	win32_global_cleanup();
 #endif
+	cleanup_decompressor_params();
+	cleanup_compressor_params();
+
+	wimlib_set_error_file(NULL);
+	lib_initialized = false;
 }