]> wimlib.net Git - wimlib/blobdiff - src/extract.c
extract_trees(): Send correct end progress msg
[wimlib] / src / extract.c
index a087a76d48adbfad43409e8fe75d038c09906c1a..c6711ec902dd36f43df80b972531bfa14fc22da1 100644 (file)
@@ -49,6 +49,7 @@
 #include "wimlib/error.h"
 #include "wimlib/lookup_table.h"
 #include "wimlib/metadata.h"
+#include "wimlib/pathlist.h"
 #include "wimlib/paths.h"
 #include "wimlib/reparse.h"
 #include "wimlib/resource.h"
@@ -57,6 +58,7 @@
 #  include "wimlib/win32.h" /* for realpath() equivalent */
 #endif
 #include "wimlib/xml.h"
+#include "wimlib/wildcard.h"
 #include "wimlib/wim.h"
 
 #include <errno.h>
@@ -67,7 +69,8 @@
 
 #define WIMLIB_EXTRACT_FLAG_MULTI_IMAGE 0x80000000
 #define WIMLIB_EXTRACT_FLAG_FROM_PIPE   0x40000000
-#define WIMLIB_EXTRACT_MASK_PUBLIC      0x3fffffff
+#define WIMLIB_EXTRACT_FLAG_PATHMODE    0x20000000
+#define WIMLIB_EXTRACT_MASK_PUBLIC      0x1fffffff
 
 /* Given a WIM dentry in the tree to be extracted, resolve all streams in the
  * corresponding inode and set 'out_refcnt' in each to 0.  */
@@ -129,7 +132,7 @@ ref_stream_to_extract(struct wim_lookup_table_entry *lte,
            (!is_linked_extraction(ctx) || (lte->out_refcnt == 0 &&
                                            lte->extracted_file == NULL)))
        {
-               ctx->progress.extract.total_bytes += wim_resource_size(lte);
+               ctx->progress.extract.total_bytes += lte->size;
                ctx->progress.extract.num_streams++;
        }
 
@@ -140,7 +143,7 @@ ref_stream_to_extract(struct wim_lookup_table_entry *lte,
                ctx->num_streams_remaining++;
        }
 
-       if (ctx->extract_flags & WIMLIB_EXTRACT_FLAG_SEQUENTIAL) {
+       if (!(ctx->extract_flags & WIMLIB_EXTRACT_FLAG_FILE_ORDER)) {
                struct wim_dentry **lte_dentries;
 
                /* Append dentry to this stream's array of dentries referencing
@@ -165,7 +168,7 @@ ref_stream_to_extract(struct wim_lookup_table_entry *lte,
                                lte_dentries = REALLOC(prev_lte_dentries,
                                                       alloc_lte_dentries *
                                                        sizeof(lte_dentries[0]));
-                               if (!lte_dentries)
+                               if (lte_dentries == NULL)
                                        return WIMLIB_ERR_NOMEM;
                                if (prev_lte_dentries == NULL) {
                                        memcpy(lte_dentries,
@@ -237,7 +240,7 @@ update_extract_progress(struct apply_ctx *ctx,
        wimlib_progress_func_t progress_func = ctx->progress_func;
        union wimlib_progress_info *progress = &ctx->progress;
 
-       progress->extract.completed_bytes += wim_resource_size(lte);
+       progress->extract.completed_bytes += lte->size;
        if (progress_func &&
            progress->extract.completed_bytes >= ctx->next_progress)
        {
@@ -534,10 +537,10 @@ error:
  * This function operates slightly differently depending on whether @lte_spec is
  * NULL or not.  When @lte_spec is NULL, the behavior is to extract the default
  * file contents (unnamed stream), and, if named data streams are supported in
- * the extract mode and volume, any named data streams.  When @lte_spec is NULL,
- * the behavior is to extract only all copies of the stream @lte_spec, and in
- * addition use @lte_spec to set the reparse data or create the symbolic link if
- * appropriate.
+ * the extract mode and volume, any named data streams.  When @lte_spec is not
+ * NULL, the behavior is to extract only all copies of the stream @lte_spec, and
+ * in addition use @lte_spec to set the reparse data or create the symbolic link
+ * if appropriate.
  *
  * @path
  *     Path to file to extract (as can be passed to apply_operations
@@ -1143,7 +1146,8 @@ dentry_extract_skeleton(struct wim_dentry *dentry, void *_ctx)
        {
                inode_for_each_dentry(other_dentry, dentry->d_inode) {
                        if (dentry_has_short_name(other_dentry)
-                           && !other_dentry->skeleton_extracted)
+                           && !other_dentry->skeleton_extracted
+                           && other_dentry->in_extraction_tree)
                        {
                                DEBUG("Creating %"TS" before %"TS" "
                                      "to guarantee correct DOS name extraction",
@@ -1181,8 +1185,7 @@ dentry_extract_dir_skeleton(struct wim_dentry *dentry, void *_ctx)
        return 0;
 }
 
-/* Create a file or directory, then immediately extract all streams.  This
- * assumes that WIMLIB_EXTRACT_FLAG_SEQUENTIAL is not specified, since the WIM
+/* Create a file or directory, then immediately extract all streams.  The WIM
  * may not be read sequentially by this function.  */
 static int
 dentry_extract(struct wim_dentry *dentry, void *_ctx)
@@ -1201,23 +1204,50 @@ dentry_extract(struct wim_dentry *dentry, void *_ctx)
        return extract_streams(path, ctx, dentry, NULL, NULL);
 }
 
+/* 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
+create_temporary_file(struct filedes *fd_ret, tchar **name_ret)
+{
+       tchar *name;
+       int raw_fd;
+
+retry:
+       name = ttempnam(NULL, T("wimlib"));
+       if (name == NULL) {
+               ERROR_WITH_ERRNO("Failed to create temporary filename");
+               return WIMLIB_ERR_NOMEM;
+       }
+
+       raw_fd = topen(name, O_WRONLY | O_CREAT | O_EXCL | O_BINARY, 0600);
+
+       if (raw_fd < 0) {
+               if (errno == EEXIST) {
+                       FREE(name);
+                       goto retry;
+               }
+               ERROR_WITH_ERRNO("Failed to open temporary file \"%"TS"\"", name);
+               FREE(name);
+               return WIMLIB_ERR_OPEN;
+       }
+
+       filedes_init(fd_ret, raw_fd);
+       *name_ret = name;
+       return 0;
+}
+
 /* Extract all instances of the stream @lte that are being extracted in this
- * call of extract_tree().  @can_seek specifies whether the WIM file descriptor
- * is seekable or not (e.g. is a pipe).  If not and the stream needs to be
- * extracted multiple times, it is extracted to a temporary file first.
- *
- * This is intended for use with sequential extraction of a WIM image
- * (WIMLIB_EXTRACT_FLAG_SEQUENTIAL specified).  */
+ * call of extract_tree(), but actually read the stream data from @lte_override.
+ */
 static int
 extract_stream_instances(struct wim_lookup_table_entry *lte,
-                        struct apply_ctx *ctx, bool can_seek)
+                        struct wim_lookup_table_entry *lte_override,
+                        struct apply_ctx *ctx)
 {
        struct wim_dentry **lte_dentries;
-       struct wim_lookup_table_entry *lte_tmp = NULL;
-       struct wim_lookup_table_entry *lte_override;
-       tchar *stream_tmp_filename = NULL;
        tchar path[ctx->ops->path_max];
-       unsigned i;
+       size_t i;
        int ret;
 
        if (lte->out_refcnt <= ARRAY_LEN(lte->inline_lte_dentries))
@@ -1225,50 +1255,6 @@ extract_stream_instances(struct wim_lookup_table_entry *lte,
        else
                lte_dentries = lte->lte_dentries;
 
-       if (likely(can_seek || lte->out_refcnt < 2)) {
-               lte_override = lte;
-       } else {
-               /* Need to extract stream to temporary file.  */
-               struct filedes fd;
-               int raw_fd;
-
-               stream_tmp_filename = ttempnam(NULL, T("wimlib"));
-               if (!stream_tmp_filename) {
-                       ERROR_WITH_ERRNO("Failed to create temporary filename");
-                       ret = WIMLIB_ERR_OPEN;
-                       goto out;
-               }
-
-               lte_tmp = memdup(lte, sizeof(struct wim_lookup_table_entry));
-               if (!lte_tmp) {
-                       ret = WIMLIB_ERR_NOMEM;
-                       goto out_free_stream_tmp_filename;
-               }
-               lte_tmp->resource_location = RESOURCE_IN_FILE_ON_DISK;
-               lte_tmp->file_on_disk = stream_tmp_filename;
-               lte_override = lte_tmp;
-
-               raw_fd = topen(stream_tmp_filename,
-                              O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0600);
-               if (raw_fd < 0) {
-                       ERROR_WITH_ERRNO("Failed to open temporary file");
-                       ret = WIMLIB_ERR_OPEN;
-                       goto out_free_lte_tmp;
-               }
-               filedes_init(&fd, raw_fd);
-               ret = extract_wim_resource_to_fd(lte, &fd,
-                                                wim_resource_size(lte));
-               if (filedes_close(&fd) && !ret)
-                       ret = WIMLIB_ERR_WRITE;
-               if (ret)
-                       goto out_unlink_stream_tmp_file;
-       }
-
-       /* Extract all instances of the stream, reading either from the stream
-        * in the WIM file or from the temporary file containing the stream.
-        * dentry->tmp_flag is used to ensure that each dentry is processed only
-        * once regardless of how many times this stream appears in the streams
-        * of the corresponding inode.  */
        for (i = 0; i < lte->out_refcnt; i++) {
                struct wim_dentry *dentry = lte_dentries[i];
 
@@ -1276,8 +1262,7 @@ extract_stream_instances(struct wim_lookup_table_entry *lte,
                        continue;
                if (!build_extraction_path(path, dentry, ctx))
                        continue;
-               ret = extract_streams(path, ctx, dentry,
-                                     lte, lte_override);
+               ret = extract_streams(path, ctx, dentry, lte, lte_override);
                if (ret)
                        goto out_clear_tmp_flags;
                dentry->tmp_flag = 1;
@@ -1286,38 +1271,138 @@ extract_stream_instances(struct wim_lookup_table_entry *lte,
 out_clear_tmp_flags:
        for (i = 0; i < lte->out_refcnt; i++)
                lte_dentries[i]->tmp_flag = 0;
-out_unlink_stream_tmp_file:
-       if (stream_tmp_filename)
-               tunlink(stream_tmp_filename);
-out_free_lte_tmp:
-       FREE(lte_tmp);
-out_free_stream_tmp_filename:
-       FREE(stream_tmp_filename);
-out:
+       return ret;
+}
+
+/* Determine whether the specified stream needs to be extracted to a temporary
+ * file or not.
+ *
+ * @lte->out_refcnt specifies the number of instances of this stream that must
+ * be extracted.
+ *
+ * @is_partial_res is %true if this stream is just one of multiple in a single
+ * WIM resource being extracted.  */
+static bool
+need_tmpfile_to_extract(struct wim_lookup_table_entry *lte,
+                       bool is_partial_res)
+{
+       /* Temporary file is always required when reading a partial resource,
+        * since in that case we retrieve all the contained streams in one pass.
+        * */
+       if (is_partial_res)
+               return true;
+
+       /* Otherwise we don't need a temporary file if only a single instance of
+        * the stream is needed.  */
+       if (lte->out_refcnt == 1)
+               return false;
+
+       wimlib_assert(lte->out_refcnt >= 2);
+
+       /* We also don't need a temporary file if random access to the stream is
+        * allowed.  */
+       if (lte->resource_location != RESOURCE_IN_WIM ||
+           filedes_is_seekable(&lte->rspec->wim->in_fd))
+               return false;
+
+       return true;
+}
+
+static int
+begin_extract_stream_to_tmpfile(struct wim_lookup_table_entry *lte,
+                               bool is_partial_res,
+                               void *_ctx)
+{
+       struct apply_ctx *ctx = _ctx;
+       int ret;
+
+       if (!need_tmpfile_to_extract(lte, is_partial_res)) {
+               DEBUG("Temporary file not needed "
+                     "for stream (size=%"PRIu64")", lte->size);
+               ret = extract_stream_instances(lte, lte, ctx);
+               if (ret)
+                       return ret;
+
+               return BEGIN_STREAM_STATUS_SKIP_STREAM;
+       }
+
+       DEBUG("Temporary file needed for stream (size=%"PRIu64")", lte->size);
+       return create_temporary_file(&ctx->tmpfile_fd, &ctx->tmpfile_name);
+}
+
+static int
+end_extract_stream_to_tmpfile(struct wim_lookup_table_entry *lte,
+                             int status, void *_ctx)
+{
+       struct apply_ctx *ctx = _ctx;
+       struct wim_lookup_table_entry lte_override;
+       int ret;
+       int errno_save = errno;
+
+       ret = filedes_close(&ctx->tmpfile_fd);
+
+       if (status) {
+               ret = status;
+               errno = errno_save;
+               goto out_delete_tmpfile;
+       }
+
+       if (ret) {
+               ERROR_WITH_ERRNO("Error writing temporary file %"TS, ctx->tmpfile_name);
+               ret = WIMLIB_ERR_WRITE;
+               goto out_delete_tmpfile;
+       }
+
+       /* Now that a full stream has been extracted to a temporary file,
+        * extract all instances of it to the actual target.  */
+
+       memcpy(&lte_override, lte, sizeof(struct wim_lookup_table_entry));
+       lte_override.resource_location = RESOURCE_IN_FILE_ON_DISK;
+       lte_override.file_on_disk = ctx->tmpfile_name;
+
+       ret = extract_stream_instances(lte, &lte_override, ctx);
+
+out_delete_tmpfile:
+       errno_save = errno;
+       tunlink(ctx->tmpfile_name);
+       FREE(ctx->tmpfile_name);
+       errno = errno_save;
        return ret;
 }
 
 /* Extracts a list of streams (ctx.stream_list), assuming that the directory
  * structure and empty files were already created.  This relies on the
  * per-`struct wim_lookup_table_entry' list of dentries that reference each
- * stream that was constructed earlier.  Streams are extracted exactly in the
- * order of the stream list; however, unless the WIM's file descriptor is
- * detected to be non-seekable, streams may be read from the WIM file more than
- * one time if multiple copies need to be extracted.  */
+ * stream that was constructed earlier.  */
 static int
 extract_stream_list(struct apply_ctx *ctx)
 {
-       struct wim_lookup_table_entry *lte;
-       bool can_seek;
-       int ret;
+       if (!(ctx->extract_flags & WIMLIB_EXTRACT_FLAG_FILE_ORDER)) {
+               /* Sequential extraction: read the streams in the order in which
+                * they appear in the WIM file.  */
+               struct read_stream_list_callbacks cbs = {
+                       .begin_stream           = begin_extract_stream_to_tmpfile,
+                       .begin_stream_ctx       = ctx,
+                       .consume_chunk          = extract_chunk_to_fd,
+                       .consume_chunk_ctx      = &ctx->tmpfile_fd,
+                       .end_stream             = end_extract_stream_to_tmpfile,
+                       .end_stream_ctx         = ctx,
+               };
+               return read_stream_list(&ctx->stream_list,
+                                       offsetof(struct wim_lookup_table_entry, extraction_list),
+                                       &cbs, VERIFY_STREAM_HASHES);
+       } else {
+               /* Extract the streams in unsorted order.  */
+               struct wim_lookup_table_entry *lte;
+               int ret;
 
-       can_seek = (lseek(ctx->wim->in_fd.fd, 0, SEEK_CUR) != -1);
-       list_for_each_entry(lte, &ctx->stream_list, extraction_list) {
-               ret = extract_stream_instances(lte, ctx, can_seek);
-               if (ret)
-                       return ret;
+               list_for_each_entry(lte, &ctx->stream_list, extraction_list) {
+                       ret = extract_stream_instances(lte, lte, ctx);
+                       if (ret)
+                               return ret;
+               }
+               return 0;
        }
-       return 0;
 }
 
 #define PWM_ALLOW_WIM_HDR 0x00001
@@ -1326,12 +1411,14 @@ extract_stream_list(struct apply_ctx *ctx)
 /* Read the header from a stream in a pipable WIM.  */
 static int
 read_pwm_stream_header(WIMStruct *pwm, struct wim_lookup_table_entry *lte,
+                      struct wim_resource_spec *rspec,
                       int flags, struct wim_header_disk *hdr_ret)
 {
        union {
                struct pwm_stream_hdr stream_hdr;
                struct wim_header_disk pwm_hdr;
        } buf;
+       struct wim_reshdr reshdr;
        int ret;
 
        ret = full_read(&pwm->in_fd, &buf.stream_hdr, sizeof(buf.stream_hdr));
@@ -1350,25 +1437,22 @@ read_pwm_stream_header(WIMStruct *pwm, struct wim_lookup_table_entry *lte,
                return 0;
        }
 
-       if (buf.stream_hdr.magic != PWM_STREAM_MAGIC) {
+       if (le64_to_cpu(buf.stream_hdr.magic) != PWM_STREAM_MAGIC) {
                ERROR("Data read on pipe is invalid (expected stream header).");
                return WIMLIB_ERR_INVALID_PIPABLE_WIM;
        }
 
-       lte->resource_entry.original_size = le64_to_cpu(buf.stream_hdr.uncompressed_size);
        copy_hash(lte->hash, buf.stream_hdr.hash);
-       lte->resource_entry.flags = le32_to_cpu(buf.stream_hdr.flags);
-       lte->resource_entry.offset = pwm->in_fd.offset;
-       lte->resource_location = RESOURCE_IN_WIM;
-       lte->wim = pwm;
-       if (lte->resource_entry.flags & WIM_RESHDR_FLAG_COMPRESSED) {
-               lte->compression_type = pwm->compression_type;
-               lte->resource_entry.size = 0;
-       } else {
-               lte->compression_type = WIMLIB_COMPRESSION_TYPE_NONE;
-               lte->resource_entry.size = lte->resource_entry.original_size;
-       }
-       lte->is_pipable = 1;
+
+       reshdr.size_in_wim = 0;
+       reshdr.flags = le32_to_cpu(buf.stream_hdr.flags);
+       reshdr.offset_in_wim = pwm->in_fd.offset;
+       reshdr.uncompressed_size = le64_to_cpu(buf.stream_hdr.uncompressed_size);
+       wim_res_hdr_to_spec(&reshdr, pwm, rspec);
+       lte_bind_wim_resource_spec(lte, rspec);
+       lte->flags = rspec->flags;
+       lte->size = rspec->uncompressed_size;
+       lte->offset_in_res = 0;
        return 0;
 
 read_error:
@@ -1377,20 +1461,11 @@ read_error:
        return ret;
 }
 
-/* Skip over an unneeded stream in a pipable WIM being read from a pipe.  */
-static int
-skip_pwm_stream(struct wim_lookup_table_entry *lte)
-{
-       return read_partial_wim_resource(lte, wim_resource_size(lte),
-                                        NULL, NULL,
-                                        WIMLIB_READ_RESOURCE_FLAG_SEEK_ONLY,
-                                        0);
-}
-
 static int
 extract_streams_from_pipe(struct apply_ctx *ctx)
 {
        struct wim_lookup_table_entry *found_lte;
+       struct wim_resource_spec *rspec;
        struct wim_lookup_table_entry *needed_lte;
        struct wim_lookup_table *lookup_table;
        struct wim_header_disk pwm_hdr;
@@ -1399,9 +1474,13 @@ extract_streams_from_pipe(struct apply_ctx *ctx)
 
        ret = WIMLIB_ERR_NOMEM;
        found_lte = new_lookup_table_entry();
-       if (!found_lte)
+       if (found_lte == NULL)
                goto out;
 
+       rspec = MALLOC(sizeof(struct wim_resource_spec));
+       if (rspec == NULL)
+               goto out_free_found_lte;
+
        lookup_table = ctx->wim->lookup_table;
        pwm_flags = PWM_ALLOW_WIM_HDR;
        if ((ctx->extract_flags & WIMLIB_EXTRACT_FLAG_RESUME))
@@ -1413,8 +1492,10 @@ extract_streams_from_pipe(struct apply_ctx *ctx)
                ctx->progress_func(WIMLIB_PROGRESS_MSG_EXTRACT_SPWM_PART_BEGIN,
                                   &ctx->progress);
        while (ctx->num_streams_remaining) {
-               ret = read_pwm_stream_header(ctx->wim, found_lte, pwm_flags,
-                                            &pwm_hdr);
+               if (found_lte->resource_location != RESOURCE_NONEXISTENT)
+                       lte_unbind_wim_resource_spec(found_lte);
+               ret = read_pwm_stream_header(ctx->wim, found_lte, rspec,
+                                            pwm_flags, &pwm_hdr);
                if (ret) {
                        if (ret == WIMLIB_ERR_UNEXPECTED_END_OF_FILE &&
                            (ctx->extract_flags & WIMLIB_EXTRACT_FLAG_RESUME))
@@ -1425,23 +1506,64 @@ extract_streams_from_pipe(struct apply_ctx *ctx)
                }
 
                if ((found_lte->resource_location != RESOURCE_NONEXISTENT)
-                   && !(found_lte->resource_entry.flags & WIM_RESHDR_FLAG_METADATA)
+                   && !(found_lte->flags & WIM_RESHDR_FLAG_METADATA)
                    && (needed_lte = lookup_resource(lookup_table, found_lte->hash))
                    && (needed_lte->out_refcnt))
                {
-                       copy_resource_entry(&needed_lte->resource_entry,
-                                           &found_lte->resource_entry);
-                       needed_lte->resource_location = found_lte->resource_location;
-                       needed_lte->wim               = found_lte->wim;
-                       needed_lte->compression_type  = found_lte->compression_type;
-                       needed_lte->is_pipable        = found_lte->is_pipable;
-
-                       ret = extract_stream_instances(needed_lte, ctx, false);
+                       tchar *tmpfile_name = NULL;
+                       struct wim_lookup_table_entry *lte_override;
+                       struct wim_lookup_table_entry tmpfile_lte;
+
+                       needed_lte->offset_in_res = found_lte->offset_in_res;
+                       needed_lte->flags = found_lte->flags;
+                       needed_lte->size = found_lte->size;
+
+                       lte_unbind_wim_resource_spec(found_lte);
+                       lte_bind_wim_resource_spec(needed_lte, rspec);
+
+                       if (needed_lte->out_refcnt > 1) {
+
+                               struct filedes tmpfile_fd;
+
+                               /* Extract stream to temporary file.  */
+                               ret = create_temporary_file(&tmpfile_fd, &tmpfile_name);
+                               if (ret)
+                                       goto out_free_found_lte;
+
+                               ret = extract_full_stream_to_fd(needed_lte,
+                                                               &tmpfile_fd);
+                               if (ret) {
+                                       filedes_close(&tmpfile_fd);
+                                       goto delete_tmpfile;
+                               }
+
+                               if (filedes_close(&tmpfile_fd)) {
+                                       ERROR_WITH_ERRNO("Error writing to temporary "
+                                                        "file \"%"TS"\"", tmpfile_name);
+                                       ret = WIMLIB_ERR_WRITE;
+                                       goto delete_tmpfile;
+                               }
+                               memcpy(&tmpfile_lte, needed_lte,
+                                      sizeof(struct wim_lookup_table_entry));
+                               tmpfile_lte.resource_location = RESOURCE_IN_FILE_ON_DISK;
+                               tmpfile_lte.file_on_disk = tmpfile_name;
+                               lte_override = &tmpfile_lte;
+                       } else {
+                               lte_override = needed_lte;
+                       }
+
+                       ret = extract_stream_instances(needed_lte, lte_override, ctx);
+               delete_tmpfile:
+                       lte_unbind_wim_resource_spec(needed_lte);
+                       if (tmpfile_name) {
+                               tunlink(tmpfile_name);
+                               FREE(tmpfile_name);
+                       }
                        if (ret)
                                goto out_free_found_lte;
                        ctx->num_streams_remaining--;
                } else if (found_lte->resource_location != RESOURCE_NONEXISTENT) {
-                       ret = skip_pwm_stream(found_lte);
+                       ret = skip_wim_stream(found_lte);
                        if (ret)
                                goto out_free_found_lte;
                } else {
@@ -1468,6 +1590,8 @@ extract_streams_from_pipe(struct apply_ctx *ctx)
        }
        ret = 0;
 out_free_found_lte:
+       if (found_lte->resource_location != RESOURCE_IN_WIM)
+               FREE(rspec);
        free_lookup_table_entry(found_lte);
 out:
        return ret;
@@ -1527,8 +1651,7 @@ extract_dentry_to_stdout(struct wim_dentry *dentry)
                if (lte) {
                        struct filedes _stdout;
                        filedes_init(&_stdout, STDOUT_FILENO);
-                       ret = extract_wim_resource_to_fd(lte, &_stdout,
-                                                        wim_resource_size(lte));
+                       ret = extract_full_stream_to_fd(lte, &_stdout);
                }
        }
        return ret;
@@ -1637,38 +1760,36 @@ dentry_calculate_extraction_path(struct wim_dentry *dentry, void *_args)
                goto skip_dentry;
        }
 
-#ifdef __WIN32__
        if (!ctx->ops->supports_case_sensitive_filenames)
        {
                struct wim_dentry *other;
                list_for_each_entry(other, &dentry->case_insensitive_conflict_list,
                                    case_insensitive_conflict_list)
                {
-                       if (ctx->extract_flags &
-                           WIMLIB_EXTRACT_FLAG_ALL_CASE_CONFLICTS) {
-                               WARNING("\"%"TS"\" has the same "
-                                       "case-insensitive name as "
-                                       "\"%"TS"\"; extracting "
-                                       "dummy name instead",
-                                       dentry_full_path(dentry),
-                                       dentry_full_path(other));
-                               goto out_replace;
-                       } else {
-                               WARNING("Not extracting \"%"TS"\": "
-                                       "has same case-insensitive "
-                                       "name as \"%"TS"\"",
-                                       dentry_full_path(dentry),
-                                       dentry_full_path(other));
-                               goto skip_dentry;
+                       if (!other->extraction_skipped) {
+                               if (ctx->extract_flags &
+                                   WIMLIB_EXTRACT_FLAG_ALL_CASE_CONFLICTS) {
+                                       WARNING("\"%"TS"\" has the same "
+                                               "case-insensitive name as "
+                                               "\"%"TS"\"; extracting "
+                                               "dummy name instead",
+                                               dentry_full_path(dentry),
+                                               dentry_full_path(other));
+                                       goto out_replace;
+                               } else {
+                                       WARNING("Not extracting \"%"TS"\": "
+                                               "has same case-insensitive "
+                                               "name as \"%"TS"\"",
+                                               dentry_full_path(dentry),
+                                               dentry_full_path(other));
+                                       goto skip_dentry;
+                               }
                        }
                }
        }
-#else  /* __WIN32__ */
-       wimlib_assert(ctx->ops->supports_case_sensitive_filenames);
-#endif /* !__WIN32__ */
 
        if (file_name_valid(dentry->file_name, dentry->file_name_nbytes / 2, false)) {
-#ifdef __WIN32__
+#if TCHAR_IS_UTF16LE
                dentry->extraction_name = dentry->file_name;
                dentry->extraction_name_nchars = dentry->file_name_nbytes / 2;
                return 0;
@@ -1703,7 +1824,7 @@ out_replace:
 
                tchar *tchar_name;
                size_t tchar_nchars;
-       #ifdef __WIN32__
+       #if TCHAR_IS_UTF16LE
                tchar_name = utf16_name_copy;
                tchar_nchars = dentry->file_name_nbytes / 2;
        #else
@@ -1720,7 +1841,7 @@ out_replace:
                fixed_name_num_chars += tsprintf(fixed_name + tchar_nchars,
                                                 T(" (invalid filename #%lu)"),
                                                 ++ctx->invalid_sequence);
-       #ifndef __WIN32__
+       #if !TCHAR_IS_UTF16LE
                FREE(tchar_name);
        #endif
                dentry->extraction_name = memdup(fixed_name,
@@ -1742,6 +1863,7 @@ dentry_reset_needs_extraction(struct wim_dentry *dentry, void *_ignore)
 {
        struct wim_inode *inode = dentry->d_inode;
 
+       dentry->in_extraction_tree = 0;
        dentry->extraction_skipped = 0;
        dentry->was_hardlinked = 0;
        dentry->skeleton_extracted = 0;
@@ -1762,6 +1884,9 @@ dentry_tally_features(struct wim_dentry *dentry, void *_features)
        struct wim_features *features = _features;
        struct wim_inode *inode = dentry->d_inode;
 
+       if (dentry->extraction_skipped)
+               return 0;
+
        if (inode->i_attributes & FILE_ATTRIBUTE_ARCHIVE)
                features->archive_files++;
        if (inode->i_attributes & FILE_ATTRIBUTE_HIDDEN)
@@ -1844,7 +1969,8 @@ do_feature_check(const struct wim_features *required_features,
                 const struct wim_features *supported_features,
                 int extract_flags,
                 const struct apply_operations *ops,
-                const tchar *wim_source_path)
+                const tchar *wim_source_path,
+                bool warn)
 {
        const tchar *loc;
        const tchar *mode = T("this extraction mode");
@@ -1854,148 +1980,150 @@ do_feature_check(const struct wim_features *required_features,
        else
                loc = wim_source_path;
 
-       /* We're an archive program, so theoretically we can do what we want
-        * with FILE_ATTRIBUTE_ARCHIVE (which is a dumb flag anyway).  Don't
-        * bother the user about it.  */
+       if (warn) {
+               /* We're an archive program, so theoretically we can do what we want
+                * with FILE_ATTRIBUTE_ARCHIVE (which is a dumb flag anyway).  Don't
+                * bother the user about it.  */
 #if 0
-       if (required_features->archive_files && !supported_features->archive_files)
-       {
-               WARNING(
-          "%lu files in %"TS" are marked as archived, but this attribute\n"
-"          is not supported in %"TS".",
-                       required_features->archive_files, loc, mode);
-       }
+               if (required_features->archive_files && !supported_features->archive_files)
+               {
+                       WARNING(
+                 "%lu files in %"TS" are marked as archived, but this attribute\n"
+       "          is not supported in %"TS".",
+                               required_features->archive_files, loc, mode);
+               }
 #endif
 
-       if (required_features->hidden_files && !supported_features->hidden_files)
-       {
-               WARNING(
-          "%lu files in %"TS" are marked as hidden, but this\n"
-"          attribute is not supported in %"TS".",
-                       required_features->hidden_files, loc, mode);
-       }
+               if (required_features->hidden_files && !supported_features->hidden_files)
+               {
+                       WARNING(
+                 "%lu files in %"TS" are marked as hidden, but this\n"
+       "          attribute is not supported in %"TS".",
+                               required_features->hidden_files, loc, mode);
+               }
 
-       if (required_features->system_files && !supported_features->system_files)
-       {
-               WARNING(
-          "%lu files in %"TS" are marked as system files,\n"
-"          but this attribute is not supported in %"TS".",
-                       required_features->system_files, loc, mode);
-       }
+               if (required_features->system_files && !supported_features->system_files)
+               {
+                       WARNING(
+                 "%lu files in %"TS" are marked as system files,\n"
+       "          but this attribute is not supported in %"TS".",
+                               required_features->system_files, loc, mode);
+               }
 
-       if (required_features->compressed_files && !supported_features->compressed_files)
-       {
-               WARNING(
-          "%lu files in %"TS" are marked as being transparently\n"
-"          compressed, but transparent compression is not supported in\n"
-"          %"TS".  These files will be extracted as uncompressed.",
-                       required_features->compressed_files, loc, mode);
-       }
+               if (required_features->compressed_files && !supported_features->compressed_files)
+               {
+                       WARNING(
+                 "%lu files in %"TS" are marked as being transparently\n"
+       "          compressed, but transparent compression is not supported in\n"
+       "          %"TS".  These files will be extracted as uncompressed.",
+                               required_features->compressed_files, loc, mode);
+               }
 
-       if (required_features->encrypted_files && !supported_features->encrypted_files)
-       {
-               WARNING(
-          "%lu files in %"TS" are marked as being encrypted,\n"
-"           but encryption is not supported in %"TS".  These files\n"
-"           will not be extracted.",
-                       required_features->encrypted_files, loc, mode);
-       }
+               if (required_features->encrypted_files && !supported_features->encrypted_files)
+               {
+                       WARNING(
+                 "%lu files in %"TS" are marked as being encrypted,\n"
+       "           but encryption is not supported in %"TS".  These files\n"
+       "           will not be extracted.",
+                               required_features->encrypted_files, loc, mode);
+               }
 
-       if (required_features->encrypted_directories &&
-           !supported_features->encrypted_directories)
-       {
-               WARNING(
-          "%lu directories in %"TS" are marked as being encrypted,\n"
-"           but encryption is not supported in %"TS".\n"
-"           These directories will be extracted as unencrypted.",
-                       required_features->encrypted_directories, loc, mode);
-       }
+               if (required_features->encrypted_directories &&
+                   !supported_features->encrypted_directories)
+               {
+                       WARNING(
+                 "%lu directories in %"TS" are marked as being encrypted,\n"
+       "           but encryption is not supported in %"TS".\n"
+       "           These directories will be extracted as unencrypted.",
+                               required_features->encrypted_directories, loc, mode);
+               }
 
-       if (required_features->not_context_indexed_files &&
-           !supported_features->not_context_indexed_files)
-       {
-               WARNING(
-          "%lu files in %"TS" are marked as not content indexed,\n"
-"          but this attribute is not supported in %"TS".",
-                       required_features->not_context_indexed_files, loc, mode);
-       }
+               if (required_features->not_context_indexed_files &&
+                   !supported_features->not_context_indexed_files)
+               {
+                       WARNING(
+                 "%lu files in %"TS" are marked as not content indexed,\n"
+       "          but this attribute is not supported in %"TS".",
+                               required_features->not_context_indexed_files, loc, mode);
+               }
 
-       if (required_features->sparse_files && !supported_features->sparse_files)
-       {
-               WARNING(
-          "%lu files in %"TS" are marked as sparse, but creating\n"
-"           sparse files is not supported in %"TS".  These files\n"
-"           will be extracted as non-sparse.",
-                       required_features->sparse_files, loc, mode);
-       }
+               if (required_features->sparse_files && !supported_features->sparse_files)
+               {
+                       WARNING(
+                 "%lu files in %"TS" are marked as sparse, but creating\n"
+       "           sparse files is not supported in %"TS".  These files\n"
+       "           will be extracted as non-sparse.",
+                               required_features->sparse_files, loc, mode);
+               }
 
-       if (required_features->named_data_streams &&
-           !supported_features->named_data_streams)
-       {
-               WARNING(
-          "%lu files in %"TS" contain one or more alternate (named)\n"
-"          data streams, which are not supported in %"TS".\n"
-"          Alternate data streams will NOT be extracted.",
-                       required_features->named_data_streams, loc, mode);
-       }
+               if (required_features->named_data_streams &&
+                   !supported_features->named_data_streams)
+               {
+                       WARNING(
+                 "%lu files in %"TS" contain one or more alternate (named)\n"
+       "          data streams, which are not supported in %"TS".\n"
+       "          Alternate data streams will NOT be extracted.",
+                               required_features->named_data_streams, loc, mode);
+               }
 
-       if (unlikely(extract_flags & (WIMLIB_EXTRACT_FLAG_HARDLINK |
-                                     WIMLIB_EXTRACT_FLAG_SYMLINK)) &&
-           required_features->named_data_streams &&
-           supported_features->named_data_streams)
-       {
-               WARNING(
-          "%lu files in %"TS" contain one or more alternate (named)\n"
-"          data streams, which are not supported in linked extraction mode.\n"
-"          Alternate data streams will NOT be extracted.",
-                       required_features->named_data_streams, loc);
-       }
+               if (unlikely(extract_flags & (WIMLIB_EXTRACT_FLAG_HARDLINK |
+                                             WIMLIB_EXTRACT_FLAG_SYMLINK)) &&
+                   required_features->named_data_streams &&
+                   supported_features->named_data_streams)
+               {
+                       WARNING(
+                 "%lu files in %"TS" contain one or more alternate (named)\n"
+       "          data streams, which are not supported in linked extraction mode.\n"
+       "          Alternate data streams will NOT be extracted.",
+                               required_features->named_data_streams, loc);
+               }
 
-       if (required_features->hard_links && !supported_features->hard_links)
-       {
-               WARNING(
-          "%lu files in %"TS" are hard links, but hard links are\n"
-"          not supported in %"TS".  Hard links will be extracted as\n"
-"          duplicate copies of the linked files.",
-                       required_features->hard_links, loc, mode);
-       }
+               if (required_features->hard_links && !supported_features->hard_links)
+               {
+                       WARNING(
+                 "%lu files in %"TS" are hard links, but hard links are\n"
+       "          not supported in %"TS".  Hard links will be extracted as\n"
+       "          duplicate copies of the linked files.",
+                               required_features->hard_links, loc, mode);
+               }
 
-       if (required_features->reparse_points && !supported_features->reparse_points)
-       {
-               if (supported_features->symlink_reparse_points) {
-                       if (required_features->other_reparse_points) {
+               if (required_features->reparse_points && !supported_features->reparse_points)
+               {
+                       if (supported_features->symlink_reparse_points) {
+                               if (required_features->other_reparse_points) {
+                                       WARNING(
+                 "%lu files in %"TS" are reparse points that are neither\n"
+       "          symbolic links nor junction points and are not supported in\n"
+       "          %"TS".  These reparse points will not be extracted.",
+                                               required_features->other_reparse_points, loc,
+                                               mode);
+                               }
+                       } else {
                                WARNING(
-          "%lu files in %"TS" are reparse points that are neither\n"
-"          symbolic links nor junction points and are not supported in\n"
-"          %"TS".  These reparse points will not be extracted.",
-                                       required_features->other_reparse_points, loc,
-                                       mode);
+                 "%lu files in %"TS" are reparse points, which are\n"
+       "          not supported in %"TS" and will not be extracted.",
+                                       required_features->reparse_points, loc, mode);
                        }
-               } else {
-                       WARNING(
-          "%lu files in %"TS" are reparse points, which are\n"
-"          not supported in %"TS" and will not be extracted.",
-                               required_features->reparse_points, loc, mode);
                }
-       }
 
-       if (required_features->security_descriptors &&
-           !supported_features->security_descriptors)
-       {
-               WARNING(
-          "%lu files in %"TS" have Windows NT security descriptors,\n"
-"          but extracting security descriptors is not supported in\n"
-"          %"TS".  No security descriptors will be extracted.",
-                       required_features->security_descriptors, loc, mode);
-       }
+               if (required_features->security_descriptors &&
+                   !supported_features->security_descriptors)
+               {
+                       WARNING(
+                 "%lu files in %"TS" have Windows NT security descriptors,\n"
+       "          but extracting security descriptors is not supported in\n"
+       "          %"TS".  No security descriptors will be extracted.",
+                               required_features->security_descriptors, loc, mode);
+               }
 
-       if (required_features->short_names && !supported_features->short_names)
-       {
-               WARNING(
-          "%lu files in %"TS" have short (DOS) names, but\n"
-"          extracting short names is not supported in %"TS".\n"
-"          Short names will not be extracted.\n",
-                       required_features->short_names, loc, mode);
+               if (required_features->short_names && !supported_features->short_names)
+               {
+                       WARNING(
+                 "%lu files in %"TS" have short (DOS) names, but\n"
+       "          extracting short names is not supported in %"TS".\n"
+       "          Short names will not be extracted.\n",
+                               required_features->short_names, loc, mode);
+               }
        }
 
        if ((extract_flags & WIMLIB_EXTRACT_FLAG_UNIX_DATA) &&
@@ -2061,7 +2189,7 @@ do_extract_warnings(struct apply_ctx *ctx)
            ctx->no_security_descriptors == 0)
                return;
 
-       WARNING("Extraction of \"%"TS"\" complete, but with one or more warnings:",
+       WARNING("Extraction to \"%"TS"\" complete, but with one or more warnings:",
                ctx->target);
        if (ctx->partial_security_descriptors != 0) {
                WARNING("- Could only partially set the security descriptor\n"
@@ -2079,54 +2207,38 @@ do_extract_warnings(struct apply_ctx *ctx)
 #endif
 }
 
-/*
- * extract_tree - Extract a file or directory tree from the currently selected
- *               WIM image.
- *
- * @wim:       WIMStruct for the WIM file, with the desired image selected
- *             (as wim->current_image).
- *
- * @wim_source_path:
- *             "Canonical" (i.e. no leading or trailing slashes, path
- *             separators WIM_PATH_SEPARATOR) path inside the WIM image to
- *             extract.  An empty string means the full image.
- *
- * @target:
- *             Filesystem path to extract the file or directory tree to.
- *             (Or, with WIMLIB_EXTRACT_FLAG_NTFS: the name of a NTFS volume.)
- *
- * @extract_flags:
- *             WIMLIB_EXTRACT_FLAG_*.  Also, the private flag
- *             WIMLIB_EXTRACT_FLAG_MULTI_IMAGE will be set if this is being
- *             called through wimlib_extract_image() with WIMLIB_ALL_IMAGES as
- *             the image.
- *
- * @progress_func:
- *             If non-NULL, progress function for the extraction.  The messages
- *             that may be sent in this function are:
- *
- *             WIMLIB_PROGRESS_MSG_EXTRACT_TREE_BEGIN or
- *                     WIMLIB_PROGRESS_MSG_EXTRACT_IMAGE_BEGIN;
- *             WIMLIB_PROGRESS_MSG_EXTRACT_DIR_STRUCTURE_BEGIN;
- *             WIMLIB_PROGRESS_MSG_EXTRACT_DIR_STRUCTURE_END;
- *             WIMLIB_PROGRESS_MSG_EXTRACT_DENTRY;
- *             WIMLIB_PROGRESS_MSG_EXTRACT_STREAMS;
- *             WIMLIB_PROGRESS_MSG_APPLY_TIMESTAMPS;
- *             WIMLIB_PROGRESS_MSG_EXTRACT_TREE_END or
- *                     WIMLIB_PROGRESS_MSG_EXTRACT_IMAGE_END.
- *
- * Returns 0 on success; a positive WIMLIB_ERR_* code on failure.
- */
 static int
-extract_tree(WIMStruct *wim, const tchar *wim_source_path, const tchar *target,
-            int extract_flags, wimlib_progress_func_t progress_func)
+dentry_set_skipped(struct wim_dentry *dentry, void *_ignore)
+{
+       dentry->in_extraction_tree = 1;
+       dentry->extraction_skipped = 1;
+       return 0;
+}
+
+static int
+dentry_set_not_skipped(struct wim_dentry *dentry, void *_ignore)
+{
+       dentry->in_extraction_tree = 1;
+       dentry->extraction_skipped = 0;
+       return 0;
+}
+
+static int
+extract_trees(WIMStruct *wim, struct wim_dentry **trees, size_t num_trees,
+             const tchar *wim_source_path, const tchar *target,
+             int extract_flags, wimlib_progress_func_t progress_func)
 {
-       struct wim_dentry *root;
        struct wim_features required_features;
        struct apply_ctx ctx;
        int ret;
        struct wim_lookup_table_entry *lte;
 
+       wimlib_assert(num_trees != 0);
+       wimlib_assert(target != NULL);
+
+       if (num_trees > 1)
+               wimlib_assert((extract_flags & WIMLIB_EXTRACT_FLAG_PATHMODE));
+
        /* Start initializing the apply_ctx.  */
        memset(&ctx, 0, sizeof(struct apply_ctx));
        ctx.wim = wim;
@@ -2146,19 +2258,32 @@ extract_tree(WIMStruct *wim, const tchar *wim_source_path, const tchar *target,
        }
        INIT_LIST_HEAD(&ctx.stream_list);
 
-       /* Translate the path to extract into the corresponding
-        * `struct wim_dentry', which will be the root of the
-        * "dentry tree" to extract.  */
-       root = get_dentry(wim, wim_source_path);
-       if (!root) {
-               ERROR("Path \"%"TS"\" does not exist in WIM image %d",
-                     wim_source_path, wim->current_image);
-               ret = WIMLIB_ERR_PATH_DOES_NOT_EXIST;
-               goto out;
+       if (extract_flags & WIMLIB_EXTRACT_FLAG_PATHMODE) {
+               /* Path mode --- there may be multiple trees, and targets are
+                * set relative to the root of the image.
+                *
+                * Consider all dentries to be in the extraction tree, but
+                * assume all to be skipped unless in one of the subtrees being
+                * extracted or one of the ancestors of the subtrees up to the
+                * image root.  */
+               ctx.extract_root = wim_root_dentry(wim);
+               for_dentry_in_tree(ctx.extract_root, dentry_set_skipped, NULL);
+
+               for (size_t i = 0; i < num_trees; i++) {
+                       struct wim_dentry *d;
+
+                       for_dentry_in_tree(trees[i], dentry_set_not_skipped, NULL);
+                       d = trees[i];
+                       while (d != ctx.extract_root) {
+                               d = d->parent;
+                               dentry_set_not_skipped(d, NULL);
+                       }
+               }
+       } else {
+               ctx.extract_root = trees[0];
+               for_dentry_in_tree(ctx.extract_root, dentry_set_not_skipped, NULL);
        }
 
-       ctx.extract_root = root;
-
        /* Select the appropriate apply_operations based on the
         * platform and extract_flags.  */
 #ifdef __WIN32__
@@ -2183,11 +2308,14 @@ extract_tree(WIMStruct *wim, const tchar *wim_source_path, const tchar *target,
         */
        ret = ctx.ops->start_extract(target, &ctx);
        if (ret)
-               goto out;
+               goto out_dentry_reset_needs_extraction;
 
-       dentry_tree_get_features(root, &required_features);
+       /* Get and check the features required to extract the dentry tree.  */
+       dentry_tree_get_features(ctx.extract_root, &required_features);
        ret = do_feature_check(&required_features, &ctx.supported_features,
-                              extract_flags, ctx.ops, wim_source_path);
+                              extract_flags, ctx.ops,
+                              wim_source_path,
+                              !(extract_flags & WIMLIB_EXTRACT_FLAG_PATHMODE));
        if (ret)
                goto out_finish_or_abort_extract;
 
@@ -2202,8 +2330,9 @@ extract_tree(WIMStruct *wim, const tchar *wim_source_path, const tchar *target,
 
        /* Calculate the actual filename component of each extracted dentry.  In
         * the process, set the dentry->extraction_skipped flag on dentries that
-        * are being skipped for some reason (e.g. invalid filename).  */
-       ret = for_dentry_in_tree(root, dentry_calculate_extraction_path, &ctx);
+        * are being skipped because of filename or supported features problems.  */
+       ret = for_dentry_in_tree(ctx.extract_root,
+                                dentry_calculate_extraction_path, &ctx);
        if (ret)
                goto out_dentry_reset_needs_extraction;
 
@@ -2245,25 +2374,10 @@ extract_tree(WIMStruct *wim, const tchar *wim_source_path, const tchar *target,
         * directory tree.  (If not, extract_dentry_to_stdout() will
         * return an error.)  */
        if (extract_flags & WIMLIB_EXTRACT_FLAG_TO_STDOUT) {
-               ret = extract_dentry_to_stdout(root);
+               ret = extract_dentry_to_stdout(ctx.extract_root);
                goto out_teardown_stream_list;
        }
 
-       /* If a sequential extraction was specified, sort the streams to be
-        * extracted by their position in the WIM file so that the WIM file can
-        * be read sequentially.  */
-       if ((extract_flags & (WIMLIB_EXTRACT_FLAG_SEQUENTIAL |
-                             WIMLIB_EXTRACT_FLAG_FROM_PIPE))
-                                       == WIMLIB_EXTRACT_FLAG_SEQUENTIAL)
-       {
-               ret = sort_stream_list_by_sequential_order(
-                               &ctx.stream_list,
-                               offsetof(struct wim_lookup_table_entry,
-                                        extraction_list));
-               if (ret)
-                       goto out_teardown_stream_list;
-       }
-
        if (ctx.ops->realpath_works_on_nonexisting_files &&
            ((extract_flags & WIMLIB_EXTRACT_FLAG_RPFIX) ||
             ctx.ops->requires_realtarget_in_paths))
@@ -2277,17 +2391,20 @@ extract_tree(WIMStruct *wim, const tchar *wim_source_path, const tchar *target,
        }
 
        if (progress_func) {
-               progress_func(*wim_source_path ? WIMLIB_PROGRESS_MSG_EXTRACT_TREE_BEGIN :
-                                                WIMLIB_PROGRESS_MSG_EXTRACT_IMAGE_BEGIN,
-                             &ctx.progress);
+               int msg;
+               if (*wim_source_path || (extract_flags & WIMLIB_EXTRACT_FLAG_PATHMODE))
+                       msg = WIMLIB_PROGRESS_MSG_EXTRACT_TREE_BEGIN;
+               else
+                       msg = WIMLIB_PROGRESS_MSG_EXTRACT_IMAGE_BEGIN;
+               progress_func(msg, &ctx.progress);
        }
 
        if (!ctx.root_dentry_is_special)
        {
                tchar path[ctx.ops->path_max];
-               if (build_extraction_path(path, root, &ctx))
+               if (build_extraction_path(path, ctx.extract_root, &ctx))
                {
-                       ret = extract_inode(path, &ctx, root->d_inode);
+                       ret = extract_inode(path, &ctx, ctx.extract_root->d_inode);
                        if (ret)
                                goto out_free_realtarget;
                }
@@ -2314,15 +2431,14 @@ extract_tree(WIMStruct *wim, const tchar *wim_source_path, const tchar *target,
        }
 
        if (ctx.ops->requires_short_name_reordering) {
-               ret = for_dentry_in_tree(root, dentry_extract_dir_skeleton,
+               ret = for_dentry_in_tree(ctx.extract_root, dentry_extract_dir_skeleton,
                                         &ctx);
                if (ret)
                        goto out_free_realtarget;
        }
 
        /* Finally, the important part: extract the tree of files.  */
-       if (extract_flags & (WIMLIB_EXTRACT_FLAG_SEQUENTIAL |
-                            WIMLIB_EXTRACT_FLAG_FROM_PIPE)) {
+       if (!(extract_flags & WIMLIB_EXTRACT_FLAG_FILE_ORDER)) {
                /* Sequential extraction requested, so two passes are needed
                 * (one for directory structure, one for streams.)  */
                if (progress_func)
@@ -2330,7 +2446,7 @@ extract_tree(WIMStruct *wim, const tchar *wim_source_path, const tchar *target,
                                      &ctx.progress);
 
                if (!(extract_flags & WIMLIB_EXTRACT_FLAG_RESUME)) {
-                       ret = for_dentry_in_tree(root, dentry_extract_skeleton, &ctx);
+                       ret = for_dentry_in_tree(ctx.extract_root, dentry_extract_skeleton, &ctx);
                        if (ret)
                                goto out_free_realtarget;
                }
@@ -2350,7 +2466,7 @@ extract_tree(WIMStruct *wim, const tchar *wim_source_path, const tchar *target,
                if (progress_func)
                        progress_func(WIMLIB_PROGRESS_MSG_EXTRACT_DIR_STRUCTURE_BEGIN,
                                      &ctx.progress);
-               ret = for_dentry_in_tree(root, dentry_extract, &ctx);
+               ret = for_dentry_in_tree(ctx.extract_root, dentry_extract, &ctx);
                if (ret)
                        goto out_free_realtarget;
                if (progress_func)
@@ -2382,14 +2498,17 @@ extract_tree(WIMStruct *wim, const tchar *wim_source_path, const tchar *target,
        if (progress_func)
                progress_func(WIMLIB_PROGRESS_MSG_APPLY_TIMESTAMPS,
                              &ctx.progress);
-       ret = for_dentry_in_tree_depth(root, dentry_extract_final, &ctx);
+       ret = for_dentry_in_tree_depth(ctx.extract_root, dentry_extract_final, &ctx);
        if (ret)
                goto out_free_realtarget;
 
        if (progress_func) {
-               progress_func(*wim_source_path ? WIMLIB_PROGRESS_MSG_EXTRACT_TREE_END :
-                             WIMLIB_PROGRESS_MSG_EXTRACT_IMAGE_END,
-                             &ctx.progress);
+               int msg;
+               if (*wim_source_path || (extract_flags & WIMLIB_EXTRACT_FLAG_PATHMODE))
+                       msg = WIMLIB_PROGRESS_MSG_EXTRACT_TREE_END;
+               else
+                       msg = WIMLIB_PROGRESS_MSG_EXTRACT_IMAGE_END;
+               progress_func(msg, &ctx.progress);
        }
 
        do_extract_warnings(&ctx);
@@ -2400,12 +2519,10 @@ out_free_realtarget:
 out_teardown_stream_list:
        /* Free memory allocated as part of the mapping from each
         * wim_lookup_table_entry to the dentries that reference it.  */
-       if (ctx.extract_flags & WIMLIB_EXTRACT_FLAG_SEQUENTIAL)
+       if (!(ctx.extract_flags & WIMLIB_EXTRACT_FLAG_FILE_ORDER))
                list_for_each_entry(lte, &ctx.stream_list, extraction_list)
                        if (lte->out_refcnt > ARRAY_LEN(lte->inline_lte_dentries))
                                FREE(lte->lte_dentries);
-out_dentry_reset_needs_extraction:
-       for_dentry_in_tree(root, dentry_reset_needs_extraction, NULL);
 out_finish_or_abort_extract:
        if (ret) {
                if (ctx.ops->abort_extract)
@@ -2414,10 +2531,67 @@ out_finish_or_abort_extract:
                if (ctx.ops->finish_extract)
                        ret = ctx.ops->finish_extract(&ctx);
        }
-out:
+out_dentry_reset_needs_extraction:
+       for_dentry_in_tree(ctx.extract_root, dentry_reset_needs_extraction, NULL);
        return ret;
 }
 
+/*
+ * extract_tree - Extract a file or directory tree from the currently selected
+ *               WIM image.
+ *
+ * @wim:       WIMStruct for the WIM file, with the desired image selected
+ *             (as wim->current_image).
+ *
+ * @wim_source_path:
+ *             "Canonical" (i.e. no leading or trailing slashes, path
+ *             separators WIM_PATH_SEPARATOR) path inside the WIM image to
+ *             extract.  An empty string means the full image.
+ *
+ * @target:
+ *             Filesystem path to extract the file or directory tree to.
+ *             (Or, with WIMLIB_EXTRACT_FLAG_NTFS: the name of a NTFS volume.)
+ *
+ * @extract_flags:
+ *             WIMLIB_EXTRACT_FLAG_*.  Also, the private flag
+ *             WIMLIB_EXTRACT_FLAG_MULTI_IMAGE will be set if this is being
+ *             called through wimlib_extract_image() with WIMLIB_ALL_IMAGES as
+ *             the image.
+ *
+ * @progress_func:
+ *             If non-NULL, progress function for the extraction.  The messages
+ *             that may be sent in this function are:
+ *
+ *             WIMLIB_PROGRESS_MSG_EXTRACT_TREE_BEGIN or
+ *                     WIMLIB_PROGRESS_MSG_EXTRACT_IMAGE_BEGIN;
+ *             WIMLIB_PROGRESS_MSG_EXTRACT_DIR_STRUCTURE_BEGIN;
+ *             WIMLIB_PROGRESS_MSG_EXTRACT_DIR_STRUCTURE_END;
+ *             WIMLIB_PROGRESS_MSG_EXTRACT_DENTRY;
+ *             WIMLIB_PROGRESS_MSG_EXTRACT_STREAMS;
+ *             WIMLIB_PROGRESS_MSG_APPLY_TIMESTAMPS;
+ *             WIMLIB_PROGRESS_MSG_EXTRACT_TREE_END or
+ *                     WIMLIB_PROGRESS_MSG_EXTRACT_IMAGE_END.
+ *
+ * Returns 0 on success; a positive WIMLIB_ERR_* code on failure.
+ */
+static int
+extract_tree(WIMStruct *wim, const tchar *wim_source_path,
+            const tchar *target, int extract_flags,
+            wimlib_progress_func_t progress_func)
+{
+       struct wim_dentry *root;
+
+       root = get_dentry(wim, wim_source_path, WIMLIB_CASE_PLATFORM_DEFAULT);
+
+       if (root == NULL) {
+                 ERROR("Path \"%"TS"\" does not exist in WIM image %d",
+                       wim_source_path, wim->current_image);
+                 return WIMLIB_ERR_PATH_DOES_NOT_EXIST;
+       }
+       return extract_trees(wim, &root, 1, wim_source_path,
+                            target, extract_flags, progress_func);
+}
+
 /* Validates a single wimlib_extract_command, mostly checking to make sure the
  * extract flags make sense. */
 static int
@@ -2438,6 +2612,9 @@ check_extract_command(struct wimlib_extract_command *cmd, int wim_header_flags)
                                                 WIMLIB_EXTRACT_FLAG_HARDLINK))
                return WIMLIB_ERR_INVALID_PARAM;
 
+       if (extract_flags & WIMLIB_EXTRACT_FLAG_GLOB_PATHS)
+               return WIMLIB_ERR_INVALID_PARAM;
+
        if ((extract_flags &
             (WIMLIB_EXTRACT_FLAG_NO_ACLS |
              WIMLIB_EXTRACT_FLAG_STRICT_ACLS)) == (WIMLIB_EXTRACT_FLAG_NO_ACLS |
@@ -2477,9 +2654,8 @@ check_extract_command(struct wimlib_extract_command *cmd, int wim_header_flags)
         * corresponding file or symbolic link data.  This needs to be handled
         * better.  */
        if ((extract_flags & (WIMLIB_EXTRACT_FLAG_UNIX_DATA |
-                             WIMLIB_EXTRACT_FLAG_SEQUENTIAL))
-                                   == (WIMLIB_EXTRACT_FLAG_UNIX_DATA |
-                                       WIMLIB_EXTRACT_FLAG_SEQUENTIAL))
+                             WIMLIB_EXTRACT_FLAG_FILE_ORDER))
+                                   == WIMLIB_EXTRACT_FLAG_UNIX_DATA)
        {
                if (extract_flags & WIMLIB_EXTRACT_FLAG_FROM_PIPE) {
                        WARNING("Setting UNIX file/owner group may "
@@ -2487,7 +2663,7 @@ check_extract_command(struct wimlib_extract_command *cmd, int wim_header_flags)
                                "          symbolic links "
                                "when applying from a pipe.");
                } else {
-                       extract_flags &= ~WIMLIB_EXTRACT_FLAG_SEQUENTIAL;
+                       extract_flags |= WIMLIB_EXTRACT_FLAG_FILE_ORDER;
                        WARNING("Disabling sequential extraction for "
                                "UNIX data mode");
                }
@@ -2636,7 +2812,7 @@ extract_single_image(WIMStruct *wim, int image,
 {
        int ret;
        tchar *target_copy = canonicalize_fs_path(target);
-       if (!target_copy)
+       if (target_copy == NULL)
                return WIMLIB_ERR_NOMEM;
        struct wimlib_extract_command cmd = {
                .wim_source_path = T(""),
@@ -2769,15 +2945,12 @@ wimlib_extract_image_from_pipe(int pipe_fd, const tchar *image_num_or_name,
        if (extract_flags & WIMLIB_EXTRACT_FLAG_TO_STDOUT)
                return WIMLIB_ERR_INVALID_PARAM;
 
-       extract_flags |= WIMLIB_EXTRACT_FLAG_SEQUENTIAL;
-
        /* Read the WIM header from the pipe and get a WIMStruct to represent
         * the pipable WIM.  Caveats:  Unlike getting a WIMStruct with
         * wimlib_open_wim(), getting a WIMStruct in this way will result in
         * an empty lookup table, no XML data read, and no filename set.  */
        ret = open_wim_as_WIMStruct(&pipe_fd,
-                                   WIMLIB_OPEN_FLAG_FROM_PIPE |
-                                               WIMLIB_OPEN_FLAG_SPLIT_OK,
+                                   WIMLIB_OPEN_FLAG_FROM_PIPE,
                                    &pwm, progress_func);
        if (ret)
                return ret;
@@ -2809,11 +2982,12 @@ wimlib_extract_image_from_pipe(int pipe_fd, const tchar *image_num_or_name,
         * WIMs.)  */
        {
                struct wim_lookup_table_entry xml_lte;
-               ret = read_pwm_stream_header(pwm, &xml_lte, 0, NULL);
+               struct wim_resource_spec xml_rspec;
+               ret = read_pwm_stream_header(pwm, &xml_lte, &xml_rspec, 0, NULL);
                if (ret)
                        goto out_wimlib_free;
 
-               if (!(xml_lte.resource_entry.flags & WIM_RESHDR_FLAG_METADATA))
+               if (!(xml_lte.flags & WIM_RESHDR_FLAG_METADATA))
                {
                        ERROR("Expected XML data, but found non-metadata "
                              "stream.");
@@ -2821,12 +2995,12 @@ wimlib_extract_image_from_pipe(int pipe_fd, const tchar *image_num_or_name,
                        goto out_wimlib_free;
                }
 
-               copy_resource_entry(&pwm->hdr.xml_res_entry,
-                                   &xml_lte.resource_entry);
+               wim_res_spec_to_hdr(&xml_rspec, &pwm->hdr.xml_data_reshdr);
 
                ret = read_wim_xml_data(pwm);
                if (ret)
                        goto out_wimlib_free;
+
                if (wim_info_get_num_images(pwm->wim_info) != pwm->hdr.image_count) {
                        ERROR("Image count in XML data is not the same as in WIM header.");
                        ret = WIMLIB_ERR_XML;
@@ -2862,22 +3036,29 @@ wimlib_extract_image_from_pipe(int pipe_fd, const tchar *image_num_or_name,
        for (i = 1; i <= pwm->hdr.image_count; i++) {
                struct wim_lookup_table_entry *metadata_lte;
                struct wim_image_metadata *imd;
+               struct wim_resource_spec *metadata_rspec;
 
                metadata_lte = new_lookup_table_entry();
-               if (!metadata_lte) {
+               if (metadata_lte == NULL) {
                        ret = WIMLIB_ERR_NOMEM;
                        goto out_wimlib_free;
                }
+               metadata_rspec = MALLOC(sizeof(struct wim_resource_spec));
+               if (metadata_rspec == NULL) {
+                       ret = WIMLIB_ERR_NOMEM;
+                       free_lookup_table_entry(metadata_lte);
+                       goto out_wimlib_free;
+               }
 
-               ret = read_pwm_stream_header(pwm, metadata_lte, 0, NULL);
+               ret = read_pwm_stream_header(pwm, metadata_lte, metadata_rspec, 0, NULL);
                imd = pwm->image_metadata[i - 1];
                imd->metadata_lte = metadata_lte;
-               if (ret)
+               if (ret) {
+                       FREE(metadata_rspec);
                        goto out_wimlib_free;
+               }
 
-               if (!(metadata_lte->resource_entry.flags &
-                     WIM_RESHDR_FLAG_METADATA))
-               {
+               if (!(metadata_lte->flags & WIM_RESHDR_FLAG_METADATA)) {
                        ERROR("Expected metadata resource, but found "
                              "non-metadata stream.");
                        ret = WIMLIB_ERR_INVALID_PIPABLE_WIM;
@@ -2894,7 +3075,7 @@ wimlib_extract_image_from_pipe(int pipe_fd, const tchar *image_num_or_name,
                } else {
                        /* Metadata resource is not for the image being
                         * extracted.  Skip over it.  */
-                       ret = skip_pwm_stream(metadata_lte);
+                       ret = skip_wim_stream(metadata_lte);
                        if (ret)
                                goto out_wimlib_free;
                }
@@ -2921,3 +3102,142 @@ wimlib_extract_image(WIMStruct *wim,
        return do_wimlib_extract_image(wim, image, target, extract_flags,
                                       progress_func);
 }
+
+/* API function documented in wimlib.h  */
+WIMLIBAPI int
+wimlib_extract_pathlist(WIMStruct *wim, int image,
+                       const tchar *target,
+                       const tchar *path_list_file,
+                       int extract_flags,
+                       wimlib_progress_func_t progress_func)
+{
+       int ret;
+       tchar **paths;
+       size_t num_paths;
+       void *mem;
+
+       ret = read_path_list_file(path_list_file, &paths, &num_paths, &mem);
+       if (ret)
+               return ret;
+
+       ret = wimlib_extract_paths(wim, image, target,
+                                  (const tchar * const *)paths, num_paths,
+                                  extract_flags, progress_func);
+       FREE(paths);
+       FREE(mem);
+       return ret;
+}
+
+struct append_dentry_ctx {
+       struct wim_dentry **dentries;
+       size_t num_dentries;
+       size_t num_alloc_dentries;
+};
+
+static int
+append_dentry_cb(struct wim_dentry *dentry, void *_ctx)
+{
+       struct append_dentry_ctx *ctx = _ctx;
+
+       if (ctx->num_dentries == ctx->num_alloc_dentries) {
+               struct wim_dentry **new_dentries;
+               size_t new_length;
+
+               new_length = max(ctx->num_alloc_dentries + 8,
+                                ctx->num_alloc_dentries * 3 / 2);
+               new_dentries = REALLOC(ctx->dentries,
+                                      new_length * sizeof(ctx->dentries[0]));
+               if (new_dentries == NULL)
+                       return WIMLIB_ERR_NOMEM;
+               ctx->dentries = new_dentries;
+               ctx->num_alloc_dentries = new_length;
+       }
+       ctx->dentries[ctx->num_dentries++] = dentry;
+       return 0;
+}
+
+/* API function documented in wimlib.h  */
+WIMLIBAPI int
+wimlib_extract_paths(WIMStruct *wim,
+                    int image,
+                    const tchar *target,
+                    const tchar * const *paths,
+                    size_t num_paths,
+                    int extract_flags,
+                    wimlib_progress_func_t progress_func)
+{
+       int ret;
+       struct append_dentry_ctx append_dentry_ctx = {
+               .dentries = NULL,
+               .num_dentries = 0,
+               .num_alloc_dentries = 0,
+       };
+       struct wim_dentry **trees;
+       size_t num_trees;
+
+       extract_flags &= WIMLIB_EXTRACT_MASK_PUBLIC;
+
+       if (target == NULL || (num_paths != 0 && paths == NULL))
+               return WIMLIB_ERR_INVALID_PARAM;
+
+       ret = select_wim_image(wim, image);
+       if (ret)
+               return ret;
+
+       if (extract_flags & WIMLIB_EXTRACT_FLAG_GLOB_PATHS) {
+               u32 wildcard_flags = 0;
+
+               if (extract_flags & WIMLIB_EXTRACT_FLAG_STRICT_GLOB)
+                       wildcard_flags |= WILDCARD_FLAG_ERROR_IF_NO_MATCH;
+               else
+                       wildcard_flags |= WILDCARD_FLAG_WARN_IF_NO_MATCH;
+
+               if (default_ignore_case)
+                       wildcard_flags |= WILDCARD_FLAG_CASE_INSENSITIVE;
+
+               for (size_t i = 0; i < num_paths; i++) {
+                       ret = expand_wildcard(wim, paths[i],
+                                             append_dentry_cb,
+                                             &append_dentry_ctx,
+                                             wildcard_flags);
+                       if (ret) {
+                               trees = append_dentry_ctx.dentries;
+                               goto out_free_trees;
+                       }
+               }
+               trees = append_dentry_ctx.dentries;
+               num_trees = append_dentry_ctx.num_dentries;
+       } else {
+               trees = MALLOC(num_paths * sizeof(trees[0]));
+               if (trees == NULL)
+                       return WIMLIB_ERR_NOMEM;
+
+               for (size_t i = 0; i < num_paths; i++) {
+                       trees[i] = get_dentry(wim, paths[i],
+                                             WIMLIB_CASE_PLATFORM_DEFAULT);
+                       if (trees[i] == NULL) {
+                                 ERROR("Path \"%"TS"\" does not exist "
+                                       "in WIM image %d",
+                                       paths[i], wim->current_image);
+                                 ret = WIMLIB_ERR_PATH_DOES_NOT_EXIST;
+                                 goto out_free_trees;
+                       }
+               }
+               num_trees = num_paths;
+       }
+
+       if (num_trees == 0) {
+               ret = 0;
+               goto out_free_trees;
+       }
+
+       ret = extract_trees(wim, trees, num_trees,
+                           T(""), target,
+                           ((extract_flags &
+                               ~WIMLIB_EXTRACT_FLAG_GLOB_PATHS)
+                               | WIMLIB_EXTRACT_FLAG_PATHMODE),
+                           progress_func);
+out_free_trees:
+       FREE(trees);
+       return ret;
+}