]> wimlib.net Git - wimlib/blobdiff - src/win32_apply.c
WIMBoot: Update WimOverlay.dat directly when WOF not running
[wimlib] / src / win32_apply.c
index af8a4ef9b9a9bcfa4e09b00efb721ed6ec4f744b..48ff5d87e01efa609745090195cd0903546a75ca 100644 (file)
 #include "wimlib/win32_common.h"
 
 #include "wimlib/apply.h"
+#include "wimlib/capture.h"
+#include "wimlib/dentry.h"
 #include "wimlib/error.h"
 #include "wimlib/lookup_table.h"
+#include "wimlib/paths.h"
+#include "wimlib/resource.h"
+#include "wimlib/textfile.h"
+#include "wimlib/xml.h"
+#include "wimlib/wim.h"
+#include "wimlib/wimboot.h"
+
+struct win32_apply_private_data {
+       u64 data_source_id;
+       struct string_set *prepopulate_pats;
+       void *mem_prepopulate_pats;
+       u8 wim_lookup_table_hash[SHA1_HASH_SIZE];
+       bool wof_running;
+};
+
+static struct win32_apply_private_data *
+get_private_data(struct apply_ctx *ctx)
+{
+       BUILD_BUG_ON(sizeof(ctx->private) < sizeof(struct win32_apply_private_data));
+       return (struct win32_apply_private_data *)(ctx->private);
+}
+
+static void
+free_prepopulate_pats(struct win32_apply_private_data *dat)
+{
+       if (dat->prepopulate_pats) {
+               FREE(dat->prepopulate_pats->strings);
+               FREE(dat->prepopulate_pats);
+               dat->prepopulate_pats = NULL;
+       }
+
+       if (dat->mem_prepopulate_pats) {
+               FREE(dat->mem_prepopulate_pats);
+               dat->mem_prepopulate_pats = NULL;
+       }
+}
+
+static int
+load_prepopulate_pats(struct apply_ctx *ctx)
+{
+       int ret;
+       struct wim_dentry *dentry;
+       struct wim_lookup_table_entry *lte;
+       struct string_set *s;
+       const tchar *path = WIMLIB_WIM_PATH_SEPARATOR_STRING T("Windows")
+                           WIMLIB_WIM_PATH_SEPARATOR_STRING T("System32")
+                           WIMLIB_WIM_PATH_SEPARATOR_STRING T("WimBootCompress.ini");
+       void *buf;
+       void *mem;
+       struct text_file_section sec;
+       struct win32_apply_private_data *dat = get_private_data(ctx);
+
+       dentry = get_dentry(ctx->wim, path, WIMLIB_CASE_INSENSITIVE);
+       if (!dentry ||
+           (dentry->d_inode->i_attributes & (FILE_ATTRIBUTE_DIRECTORY |
+                                             FILE_ATTRIBUTE_REPARSE_POINT |
+                                             FILE_ATTRIBUTE_ENCRYPTED)) ||
+           !(lte = inode_unnamed_lte(dentry->d_inode, ctx->wim->lookup_table)))
+       {
+               WARNING("%"TS" does not exist in WIM image!", path);
+               return WIMLIB_ERR_PATH_DOES_NOT_EXIST;
+       }
+
+       ret = read_full_stream_into_alloc_buf(lte, &buf);
+       if (ret)
+               return ret;
+
+       s = CALLOC(1, sizeof(struct string_set));
+       if (!s) {
+               FREE(buf);
+               return WIMLIB_ERR_NOMEM;
+       }
+
+       sec.name = T("PrepopulateList");
+       sec.strings = s;
+
+       ret = do_load_text_file(path, buf, lte->size, &mem, &sec, 1,
+                               LOAD_TEXT_FILE_REMOVE_QUOTES |
+                                       LOAD_TEXT_FILE_NO_WARNINGS,
+                               mangle_pat);
+       FREE(buf);
+       if (ret) {
+               FREE(s);
+               return ret;
+       }
+       dat->prepopulate_pats = s;
+       dat->mem_prepopulate_pats = mem;
+       return 0;
+}
+
+static bool
+in_prepopulate_list(struct wim_dentry *dentry, struct apply_ctx *ctx)
+{
+       struct string_set *pats;
+       const tchar *path;
+
+       pats = get_private_data(ctx)->prepopulate_pats;
+       if (!pats)
+               return false;
+       path = dentry_full_path(dentry);
+       if (!path)
+               return false;
+
+       return match_pattern(path, path_basename(path), pats);
+}
+
+static int
+hash_lookup_table(WIMStruct *wim, u8 hash[SHA1_HASH_SIZE])
+{
+       return wim_reshdr_to_hash(&wim->hdr.lookup_table_reshdr, wim, hash);
+}
 
 static int
 win32_start_extract(const wchar_t *path, struct apply_ctx *ctx)
@@ -39,10 +152,11 @@ win32_start_extract(const wchar_t *path, struct apply_ctx *ctx)
        int ret;
        unsigned vol_flags;
        bool supports_SetFileShortName;
+       struct win32_apply_private_data *dat = get_private_data(ctx);
 
        ret = win32_get_vol_flags(path, &vol_flags, &supports_SetFileShortName);
        if (ret)
-               return ret;
+               goto err;
 
        ctx->supported_features.archive_files = 1;
        ctx->supported_features.hidden_files = 1;
@@ -78,6 +192,43 @@ win32_start_extract(const wchar_t *path, struct apply_ctx *ctx)
 
        if (supports_SetFileShortName)
                ctx->supported_features.short_names = 1;
+
+       if (ctx->extract_flags & WIMLIB_EXTRACT_FLAG_WIMBOOT) {
+
+               ret = load_prepopulate_pats(ctx);
+               if (ret == WIMLIB_ERR_NOMEM)
+                       goto err;
+
+               if (!wim_info_get_wimboot(ctx->wim->wim_info,
+                                         ctx->wim->current_image))
+                       WARNING("Image is not marked as WIMBoot compatible!");
+
+
+               ret = hash_lookup_table(ctx->wim, dat->wim_lookup_table_hash);
+               if (ret)
+                       goto err;
+
+               ret = wimboot_alloc_data_source_id(ctx->wim->filename,
+                                                  ctx->wim->hdr.guid,
+                                                  ctx->wim->current_image,
+                                                  path,
+                                                  &dat->data_source_id,
+                                                  &dat->wof_running);
+               if (ret)
+                       goto err;
+       }
+
+       return 0;
+
+err:
+       free_prepopulate_pats(dat);
+       return ret;
+}
+
+static int
+win32_finish_extract(struct apply_ctx *ctx)
+{
+       free_prepopulate_pats(get_private_data(ctx));
        return 0;
 }
 
@@ -263,8 +414,25 @@ error:
 static int
 win32_extract_unnamed_stream(file_spec_t file,
                             struct wim_lookup_table_entry *lte,
-                            struct apply_ctx *ctx)
+                            struct apply_ctx *ctx,
+                            struct wim_dentry *dentry)
 {
+       if (ctx->extract_flags & WIMLIB_EXTRACT_FLAG_WIMBOOT
+           && lte
+           && lte->resource_location == RESOURCE_IN_WIM
+           && lte->rspec->wim == ctx->wim
+           && lte->size == lte->rspec->uncompressed_size
+           && !in_prepopulate_list(dentry, ctx))
+       {
+               const struct win32_apply_private_data *dat;
+
+               dat = get_private_data(ctx);
+               return wimboot_set_pointer(file.path, lte,
+                                          dat->data_source_id,
+                                          dat->wim_lookup_table_hash,
+                                          dat->wof_running);
+       }
+
        return win32_extract_stream(file.path, NULL, 0, lte, ctx);
 }
 
@@ -723,6 +891,8 @@ const struct apply_operations win32_apply_ops = {
 
        .target_is_root           = win32_path_is_root_of_drive,
        .start_extract            = win32_start_extract,
+       .finish_extract           = win32_finish_extract,
+       .abort_extract            = win32_finish_extract,
        .create_file              = win32_create_file,
        .create_directory         = win32_create_directory,
        .create_hardlink          = win32_create_hardlink,