*/
/*
- * Copyright (C) 2013, 2014, 2015 Eric Biggers
+ * Copyright (C) 2013-2016 Eric Biggers
*
* This file is free software; you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
#include "wimlib/apply.h"
#include "wimlib/assert.h"
#include "wimlib/blob_table.h"
-#include "wimlib/capture.h" /* for mangle_pat() and match_pattern_list() */
#include "wimlib/dentry.h"
#include "wimlib/encoding.h"
#include "wimlib/error.h"
#include "wimlib/metadata.h"
+#include "wimlib/object_id.h"
#include "wimlib/paths.h"
#include "wimlib/pattern.h"
#include "wimlib/reparse.h"
+#include "wimlib/scan.h" /* for mangle_pat() and match_pattern_list() */
#include "wimlib/textfile.h"
#include "wimlib/xml.h"
#include "wimlib/wimboot.h"
} wimboot;
/* External backing information */
- struct string_set *prepopulate_pats;
+ struct string_list *prepopulate_pats;
void *mem_prepopulate_pats;
bool tried_to_load_prepopulate_list;
* beginning of the array) */
unsigned num_open_handles;
+ /* For each currently open stream, whether we're writing to it in
+ * "sparse" mode or not. */
+ bool is_sparse_stream[MAX_OPEN_FILES];
+
+ /* Whether is_sparse_stream[] is true for any currently open stream */
+ bool any_sparse_streams;
+
/* List of dentries, joined by @d_tmp_list, that need to have reparse
* data extracted as soon as the whole blob has been read into
* @data_buffer. */
* [PrepopulateList]. */
unsigned long num_system_compression_exclusions;
+ /* Number of files for which we couldn't set the object ID. */
+ unsigned long num_object_id_failures;
+
/* The Windows build number of the image being applied, or 0 if unknown.
*/
u64 windows_build_number;
get_vol_flags(target, &vol_flags, &short_names_supported);
- supported_features->archive_files = 1;
+ supported_features->readonly_files = 1;
supported_features->hidden_files = 1;
supported_features->system_files = 1;
+ supported_features->archive_files = 1;
if (vol_flags & FILE_FILE_COMPRESSION)
supported_features->compressed_files = 1;
supported_features->not_context_indexed_files = 1;
- /* Don't do anything with FILE_SUPPORTS_SPARSE_FILES. */
+ if (vol_flags & FILE_SUPPORTS_SPARSE_FILES)
+ supported_features->sparse_files = 1;
if (vol_flags & FILE_NAMED_STREAMS)
supported_features->named_data_streams = 1;
if (short_names_supported)
supported_features->short_names = 1;
+ if (vol_flags & FILE_SUPPORTS_OBJECT_IDS)
+ supported_features->object_ids = 1;
+
supported_features->timestamps = 1;
- /* Note: Windows does not support case sensitive filenames! At least
- * not without changing the registry and rebooting... */
+ if (vol_flags & FILE_CASE_SENSITIVE_SEARCH) {
+ /*
+ * The filesystem supports case-sensitive filenames. But does
+ * the operating system as well? This normally requires the
+ * registry setting ObCaseInsensitive=0. We can test it
+ * indirectly by attempting to open the "\SystemRoot" symbolic
+ * link using a name with the wrong case. If we get
+ * STATUS_OBJECT_NAME_NOT_FOUND instead of STATUS_ACCESS_DENIED,
+ * then case-sensitive names must be enabled.
+ */
+ UNICODE_STRING path;
+ OBJECT_ATTRIBUTES attr;
+ HANDLE h;
+ NTSTATUS status;
+
+ RtlInitUnicodeString(&path, L"\\systemroot");
+ InitializeObjectAttributes(&attr, &path, 0, NULL, NULL);
+
+ status = NtOpenSymbolicLinkObject(&h, 0, &attr);
+ if (status == STATUS_OBJECT_NAME_NOT_FOUND)
+ supported_features->case_sensitive_filenames = 1;
+ }
return 0;
}
const struct blob_descriptor *blob;
int ret;
void *buf;
- struct string_set *s;
+ struct string_list *strings;
void *mem;
struct text_file_section sec;
if (ret)
return ret;
- s = CALLOC(1, sizeof(struct string_set));
- if (!s) {
+ strings = CALLOC(1, sizeof(struct string_list));
+ if (!strings) {
FREE(buf);
return WIMLIB_ERR_NOMEM;
}
sec.name = T("PrepopulateList");
- sec.strings = s;
+ sec.strings = strings;
ret = do_load_text_file(path, buf, blob->size, &mem, &sec, 1,
LOAD_TEXT_FILE_REMOVE_QUOTES |
STATIC_ASSERT(OS_PREFERRED_PATH_SEPARATOR == WIM_PATH_SEPARATOR);
FREE(buf);
if (ret) {
- FREE(s);
+ FREE(strings);
return ret;
}
- ctx->prepopulate_pats = s;
+ ctx->prepopulate_pats = strings;
ctx->mem_prepopulate_pats = mem;
return 0;
}
build_win32_extraction_path(dentry, ctx);
- randomize_char_array_with_alnum(subkeyname, 20);
+ get_random_alnum_chars(subkeyname, 20);
subkeyname[20] = L'\0';
res = RegLoadKey(HKEY_LOCAL_MACHINE, subkeyname, ctx->pathbuf.Buffer);
d = d->d_parent)
{
p -= d->d_extraction_name_nchars;
- wmemcpy(p, d->d_extraction_name, d->d_extraction_name_nchars);
+ if (d->d_extraction_name_nchars)
+ wmemcpy(p, d->d_extraction_name,
+ d->d_extraction_name_nchars);
*--p = '\\';
}
/* No leading slash */
/* Don't use FILE_OPEN_REPARSE_POINT here; we want the extraction to
* happen at the directory "pointed to" by the reparse point. */
- status = (*func_NtCreateFile)(&ctx->h_target,
- FILE_TRAVERSE,
- &ctx->attr,
- &ctx->iosb,
- NULL,
- 0,
- FILE_SHARE_VALID_FLAGS,
- FILE_OPEN_IF,
- FILE_DIRECTORY_FILE |
- FILE_OPEN_FOR_BACKUP_INTENT,
- NULL,
- 0);
+ status = NtCreateFile(&ctx->h_target,
+ FILE_TRAVERSE,
+ &ctx->attr,
+ &ctx->iosb,
+ NULL,
+ 0,
+ FILE_SHARE_VALID_FLAGS,
+ FILE_OPEN_IF,
+ FILE_DIRECTORY_FILE | FILE_OPEN_FOR_BACKUP_INTENT,
+ NULL,
+ 0);
if (!NT_SUCCESS(status)) {
winnt_error(status, L"Can't open or create directory \"%ls\"",
ctx->common.target);
close_target_directory(struct win32_apply_ctx *ctx)
{
if (ctx->h_target) {
- (*func_NtClose)(ctx->h_target);
+ NtClose(ctx->h_target);
ctx->h_target = NULL;
ctx->attr.RootDirectory = NULL;
}
{
const bool compressed = (dentry->d_inode->i_attributes &
FILE_ATTRIBUTE_COMPRESSED);
+ FILE_BASIC_INFORMATION info;
+ USHORT compression_state;
+ NTSTATUS status;
if (ctx->common.extract_flags & WIMLIB_EXTRACT_FLAG_NO_ATTRIBUTES)
return 0;
if (!ctx->common.supported_features.compressed_files)
return 0;
- FILE_BASIC_INFORMATION info;
- NTSTATUS status;
- USHORT compression_state;
- DWORD bytes_returned;
/* Get current attributes */
- status = (*func_NtQueryInformationFile)(h, &ctx->iosb,
- &info, sizeof(info),
- FileBasicInformation);
+ status = NtQueryInformationFile(h, &ctx->iosb, &info, sizeof(info),
+ FileBasicInformation);
if (NT_SUCCESS(status) &&
compressed == !!(info.FileAttributes & FILE_ATTRIBUTE_COMPRESSED))
{
else
compression_state = COMPRESSION_FORMAT_NONE;
- /* Note: don't use NtFsControlFile() here unless prepared to handle
- * STATUS_PENDING. */
- if (DeviceIoControl(h, FSCTL_SET_COMPRESSION,
- &compression_state, sizeof(USHORT), NULL, 0,
- &bytes_returned, NULL))
+ status = winnt_fsctl(h, FSCTL_SET_COMPRESSION,
+ &compression_state, sizeof(USHORT), NULL, 0, NULL);
+ if (NT_SUCCESS(status))
return 0;
- win32_error(GetLastError(), L"Can't %s compression attribute on \"%ls\"",
+ winnt_error(status, L"Can't %s compression attribute on \"%ls\"",
(compressed ? "set" : "clear"), current_path(ctx));
return WIMLIB_ERR_SET_ATTRIBUTES;
}
+static bool
+need_sparse_flag(const struct wim_inode *inode,
+ const struct win32_apply_ctx *ctx)
+{
+ return (inode->i_attributes & FILE_ATTRIBUTE_SPARSE_FILE) &&
+ ctx->common.supported_features.sparse_files;
+}
+
+static int
+set_sparse_flag(HANDLE h, struct win32_apply_ctx *ctx)
+{
+ NTSTATUS status;
+
+ status = winnt_fsctl(h, FSCTL_SET_SPARSE, NULL, 0, NULL, 0, NULL);
+ if (NT_SUCCESS(status))
+ return 0;
+
+ winnt_error(status, L"Can't set sparse flag on \"%ls\"",
+ current_path(ctx));
+ return WIMLIB_ERR_SET_ATTRIBUTES;
+}
+
/* Try to enable short name support on the target volume. If successful, return
* true. If unsuccessful, issue a warning and return false. */
static bool
ctx->pathbuf.Length = ((u8 *)end - (u8 *)ctx->pathbuf.Buffer);
/* Open the conflicting file (by short name). */
- status = (*func_NtOpenFile)(&h, GENERIC_WRITE | DELETE,
- &ctx->attr, &ctx->iosb,
- FILE_SHARE_VALID_FLAGS,
- FILE_OPEN_REPARSE_POINT | FILE_OPEN_FOR_BACKUP_INTENT);
+ status = NtOpenFile(&h, GENERIC_WRITE | DELETE,
+ &ctx->attr, &ctx->iosb,
+ FILE_SHARE_VALID_FLAGS,
+ FILE_OPEN_REPARSE_POINT | FILE_OPEN_FOR_BACKUP_INTENT);
if (!NT_SUCCESS(status)) {
winnt_warning(status, L"Can't open \"%ls\"", current_path(ctx));
goto out;
/* Try to remove the short name on the conflicting file. */
retry:
- status = (*func_NtSetInformationFile)(h, &ctx->iosb, info, bufsize,
- FileShortNameInformation);
+ status = NtSetInformationFile(h, &ctx->iosb, info, bufsize,
+ FileShortNameInformation);
if (status == STATUS_INVALID_PARAMETER && !retried) {
-
/* Microsoft forgot to make it possible to remove short names
* until Windows 7. Oops. Use a random short name instead. */
-
+ get_random_alnum_chars(info->FileName, 8);
+ wcscpy(&info->FileName[8], L".WLB");
info->FileNameLength = 12 * sizeof(wchar_t);
- for (int i = 0; i < 8; i++)
- info->FileName[i] = 'A' + (rand() % 26);
- info->FileName[8] = L'.';
- info->FileName[9] = L'W';
- info->FileName[10] = L'L';
- info->FileName[11] = L'B';
- info->FileName[12] = L'\0';
retried = true;
goto retry;
}
- (*func_NtClose)(h);
+ NtClose(h);
out:
build_extraction_path(dentry, ctx);
return status;
memcpy(info->FileName, dentry->d_short_name, dentry->d_short_name_nbytes);
retry:
- status = (*func_NtSetInformationFile)(h, &ctx->iosb, info, bufsize,
- FileShortNameInformation);
+ status = NtSetInformationFile(h, &ctx->iosb, info, bufsize,
+ FileShortNameInformation);
if (NT_SUCCESS(status))
return 0;
* A wrapper around NtCreateFile() to make it slightly more usable...
* This uses the path currently constructed in ctx->pathbuf.
*
- * Also, we always specify FILE_OPEN_FOR_BACKUP_INTENT and
+ * Also, we always specify SYNCHRONIZE access, FILE_OPEN_FOR_BACKUP_INTENT, and
* FILE_OPEN_REPARSE_POINT.
*/
static NTSTATUS
ULONG CreateOptions,
struct win32_apply_ctx *ctx)
{
- return (*func_NtCreateFile)(FileHandle,
- DesiredAccess,
- &ctx->attr,
- &ctx->iosb,
- AllocationSize,
- FileAttributes,
- FILE_SHARE_VALID_FLAGS,
- CreateDisposition,
- CreateOptions |
- FILE_OPEN_FOR_BACKUP_INTENT |
- FILE_OPEN_REPARSE_POINT,
- NULL,
- 0);
+ return NtCreateFile(FileHandle,
+ DesiredAccess | SYNCHRONIZE,
+ &ctx->attr,
+ &ctx->iosb,
+ AllocationSize,
+ FileAttributes,
+ FILE_SHARE_VALID_FLAGS,
+ CreateDisposition,
+ CreateOptions |
+ FILE_OPEN_FOR_BACKUP_INTENT |
+ FILE_OPEN_REPARSE_POINT,
+ NULL,
+ 0);
}
/* Like do_create_file(), but builds the extraction path of the @dentry first.
{
NTSTATUS status;
HANDLE h;
- FILE_DISPOSITION_INFORMATION disposition_info;
- FILE_BASIC_INFORMATION basic_info;
- bool retried = false;
+ ULONG perms = DELETE;
+ ULONG flags = FILE_NON_DIRECTORY_FILE | FILE_DELETE_ON_CLOSE;
+
+ /* First try opening the file with FILE_DELETE_ON_CLOSE. In most cases,
+ * all we have to do is that plus close the file handle. */
+retry:
+ status = do_create_file(&h, perms, NULL, 0, FILE_OPEN, flags, ctx);
+
+ if (unlikely(status == STATUS_CANNOT_DELETE)) {
+ /* This error occurs for files with FILE_ATTRIBUTE_READONLY set.
+ * Try an alternate approach: first open the file without
+ * FILE_DELETE_ON_CLOSE, then reset the file attributes, then
+ * set the "delete" disposition on the handle. */
+ if (flags & FILE_DELETE_ON_CLOSE) {
+ flags &= ~FILE_DELETE_ON_CLOSE;
+ perms |= FILE_WRITE_ATTRIBUTES;
+ goto retry;
+ }
+ }
- status = do_create_file(&h,
- DELETE,
- NULL,
- 0,
- FILE_OPEN,
- FILE_NON_DIRECTORY_FILE,
- ctx);
if (unlikely(!NT_SUCCESS(status))) {
- winnt_error(status, L"Can't open \"%ls\" for deletion",
- current_path(ctx));
+ winnt_error(status, L"Can't open \"%ls\" for deletion "
+ "(perms=%x, flags=%x)",
+ current_path(ctx), perms, flags);
return WIMLIB_ERR_OPEN;
}
-retry:
- disposition_info.DoDeleteFile = TRUE;
- status = (*func_NtSetInformationFile)(h, &ctx->iosb,
- &disposition_info,
- sizeof(disposition_info),
- FileDispositionInformation);
- (*func_NtClose)(h);
- if (likely(NT_SUCCESS(status)))
- return 0;
+ if (unlikely(!(flags & FILE_DELETE_ON_CLOSE))) {
+
+ FILE_BASIC_INFORMATION basic_info =
+ { .FileAttributes = FILE_ATTRIBUTE_NORMAL };
+ status = NtSetInformationFile(h, &ctx->iosb, &basic_info,
+ sizeof(basic_info),
+ FileBasicInformation);
- if (status == STATUS_CANNOT_DELETE && !retried) {
- /* Clear file attributes and try again. This is necessary for
- * FILE_ATTRIBUTE_READONLY files. */
- status = do_create_file(&h,
- FILE_WRITE_ATTRIBUTES | DELETE,
- NULL,
- 0,
- FILE_OPEN,
- FILE_NON_DIRECTORY_FILE,
- ctx);
if (!NT_SUCCESS(status)) {
- winnt_error(status,
- L"Can't open \"%ls\" to reset attributes",
- current_path(ctx));
- return WIMLIB_ERR_OPEN;
+ winnt_error(status, L"Can't reset attributes of \"%ls\" "
+ "to prepare for deletion", current_path(ctx));
+ NtClose(h);
+ return WIMLIB_ERR_SET_ATTRIBUTES;
}
- memset(&basic_info, 0, sizeof(basic_info));
- basic_info.FileAttributes = FILE_ATTRIBUTE_NORMAL;
- status = (*func_NtSetInformationFile)(h, &ctx->iosb,
- &basic_info,
- sizeof(basic_info),
- FileBasicInformation);
+
+ FILE_DISPOSITION_INFORMATION disp_info =
+ { .DoDeleteFile = TRUE };
+ status = NtSetInformationFile(h, &ctx->iosb, &disp_info,
+ sizeof(disp_info),
+ FileDispositionInformation);
if (!NT_SUCCESS(status)) {
- winnt_error(status,
- L"Can't reset file attributes on \"%ls\"",
- current_path(ctx));
- (*func_NtClose)(h);
+ winnt_error(status, L"Can't set delete-on-close "
+ "disposition on \"%ls\"", current_path(ctx));
+ NtClose(h);
return WIMLIB_ERR_SET_ATTRIBUTES;
}
- retried = true;
- goto retry;
}
- winnt_error(status, L"Can't delete \"%ls\"", current_path(ctx));
- return WIMLIB_ERR_OPEN;
+
+ status = NtClose(h);
+ if (unlikely(!NT_SUCCESS(status))) {
+ winnt_error(status, L"Error closing \"%ls\" after setting "
+ "delete-on-close disposition", current_path(ctx));
+ return WIMLIB_ERR_OPEN;
+ }
+
+ return 0;
}
/*
* Create a nondirectory file or named data stream at the current path,
* superseding any that already exists at that path. If successful, return an
- * open handle to the file or named data stream.
+ * open handle to the file or named data stream with the requested permissions.
*/
static int
-supersede_file_or_stream(struct win32_apply_ctx *ctx, HANDLE *h_ret)
+supersede_file_or_stream(struct win32_apply_ctx *ctx, DWORD perms,
+ HANDLE *h_ret)
{
NTSTATUS status;
bool retried = false;
* FILE_ATTRIBUTE_ENCRYPTED doesn't get set before we want it to be. */
retry:
status = do_create_file(h_ret,
- GENERIC_READ | GENERIC_WRITE | DELETE,
+ perms,
NULL,
FILE_ATTRIBUTE_SYSTEM,
FILE_CREATE,
if (!NT_SUCCESS(status))
goto fail;
- status = (*func_NtFsControlFile)(h, NULL, NULL, NULL,
- &ctx->iosb, FSCTL_SET_REPARSE_POINT,
- (void *)rpbuf, rpbuflen,
- NULL, 0);
- (*func_NtClose)(h);
+ status = winnt_fsctl(h, FSCTL_SET_REPARSE_POINT,
+ rpbuf, rpbuflen, NULL, 0, NULL);
+ NtClose(h);
if (NT_SUCCESS(status))
return 0;
build_extraction_path_with_ads(dentry, ctx,
strm->stream_name,
utf16le_len_chars(strm->stream_name));
- ret = supersede_file_or_stream(ctx, &h);
+ /*
+ * Note: do not request any permissions on the handle.
+ * Otherwise, we may encounter a Windows bug where the
+ * parent directory DACL denies read access to the new
+ * named data stream, even when using backup semantics!
+ */
+ ret = supersede_file_or_stream(ctx, 0, &h);
build_extraction_path(dentry, ctx);
if (ret)
return ret;
- (*func_NtClose)(h);
+ NtClose(h);
}
}
* FILE_ATTRIBUTE_ENCRYPTED doesn't get set before we want it to be. */
status = create_file(&h, perms, NULL, FILE_ATTRIBUTE_SYSTEM,
FILE_OPEN_IF, FILE_DIRECTORY_FILE, dentry, ctx);
- if (!NT_SUCCESS(status)) {
- winnt_error(status, L"Can't create directory \"%ls\"",
- current_path(ctx));
+ if (unlikely(!NT_SUCCESS(status))) {
+ const wchar_t *path = current_path(ctx);
+ winnt_error(status, L"Can't create directory \"%ls\"", path);
+
+ /* Check for known issue with WindowsApps directory. */
+ if (status == STATUS_ACCESS_DENIED &&
+ (wcsstr(path, L"\\WindowsApps\\") ||
+ wcsstr(path, L"\\InfusedApps\\"))) {
+ ERROR(
+"You seem to be trying to extract files to the WindowsApps directory.\n"
+" Windows 8.1 and later use new file permissions in this directory that\n"
+" cannot be overridden, even by backup/restore programs. To extract your\n"
+" files anyway, you need to choose a different target directory, delete\n"
+" the WindowsApps directory entirely, reformat the volume, do the\n"
+" extraction from a non-broken operating system such as Windows 7 or\n"
+" Linux, or wait for Microsoft to fix the design flaw in their operating\n"
+" system. This is *not* a bug in wimlib. See this thread for more\n"
+" information: https://wimlib.net/forums/viewtopic.php?f=1&t=261");
+ }
return WIMLIB_ERR_MKDIR;
}
* directory, even though this contradicts Microsoft's
* documentation for FILE_ATTRIBUTE_READONLY which states it is
* not honored for directories! */
- FILE_BASIC_INFORMATION basic_info = { .FileAttributes = FILE_ATTRIBUTE_NORMAL };
- (*func_NtSetInformationFile)(h, &ctx->iosb, &basic_info,
- sizeof(basic_info), FileBasicInformation);
+ if (!(ctx->common.extract_flags & WIMLIB_EXTRACT_FLAG_NO_ATTRIBUTES)) {
+ FILE_BASIC_INFORMATION basic_info =
+ { .FileAttributes = FILE_ATTRIBUTE_NORMAL };
+ NtSetInformationFile(h, &ctx->iosb, &basic_info,
+ sizeof(basic_info),
+ FileBasicInformation);
+ }
}
if (!dentry_is_root(dentry)) {
ret = adjust_compression_attribute(h, dentry, ctx);
out:
- (*func_NtClose)(h);
+ NtClose(h);
return ret;
}
build_extraction_path(dentry, ctx);
- ret = supersede_file_or_stream(ctx, &h);
+ ret = supersede_file_or_stream(ctx,
+ GENERIC_READ | GENERIC_WRITE | DELETE,
+ &h);
if (ret)
goto out;
if (ret)
goto out_close;
+ if (need_sparse_flag(dentry->d_inode, ctx)) {
+ ret = set_sparse_flag(h, ctx);
+ if (ret)
+ goto out_close;
+ }
+
ret = create_empty_streams(dentry, ctx);
if (ret)
goto out_close;
return 0;
out_close:
- (*func_NtClose)(h);
+ NtClose(h);
out:
return ret;
}
* STATUS_INFO_LENGTH_MISMATCH when FileNameLength
* happens to be 2 */
- status = (*func_NtSetInformationFile)(h, &ctx->iosb,
- info, bufsize,
- FileLinkInformation);
+ status = NtSetInformationFile(h, &ctx->iosb, info, bufsize,
+ FileLinkInformation);
if (NT_SUCCESS(status))
return 0;
winnt_error(status, L"Failed to create link \"%ls\"",
if (ret)
return ret;
- (*func_NtClose)(h2);
+ NtClose(h2);
return 0;
}
}
if (!ret && unlikely(ctx->common.extract_flags & WIMLIB_EXTRACT_FLAG_WIMBOOT))
ret = set_backed_from_wim(h, inode, ctx);
- (*func_NtClose)(h);
+ NtClose(h);
return ret;
}
close_handles(struct win32_apply_ctx *ctx)
{
for (unsigned i = 0; i < ctx->num_open_handles; i++)
- (*func_NtClose)(ctx->open_handles[i]);
+ NtClose(ctx->open_handles[i]);
}
/* Prepare to read the next blob, which has size @blob_size, into an in-memory
const struct wim_inode_stream *strm,
struct win32_apply_ctx *ctx)
{
- FILE_ALLOCATION_INFORMATION alloc_info;
HANDLE h;
NTSTATUS status;
return WIMLIB_ERR_OPEN;
}
- ctx->open_handles[ctx->num_open_handles++] = h;
-
- /* Allocate space for the data. */
- alloc_info.AllocationSize.QuadPart = blob->size;
- (*func_NtSetInformationFile)(h, &ctx->iosb,
- &alloc_info, sizeof(alloc_info),
+ ctx->is_sparse_stream[ctx->num_open_handles] = false;
+ if (need_sparse_flag(dentry->d_inode, ctx)) {
+ /* If the stream is unnamed, then the sparse flag was already
+ * set when the file was created. But if the stream is named,
+ * then we need to set the sparse flag here. */
+ if (unlikely(stream_is_named(strm))) {
+ int ret = set_sparse_flag(h, ctx);
+ if (ret) {
+ NtClose(h);
+ return ret;
+ }
+ }
+ ctx->is_sparse_stream[ctx->num_open_handles] = true;
+ ctx->any_sparse_streams = true;
+ } else {
+ /* Allocate space for the data. */
+ FILE_ALLOCATION_INFORMATION info =
+ { .AllocationSize = { .QuadPart = blob->size }};
+ NtSetInformationFile(h, &ctx->iosb, &info, sizeof(info),
FileAllocationInformation);
+ }
+ ctx->open_handles[ctx->num_open_handles++] = h;
return 0;
}
target_ntpath_nchars = ctx->target_ntpath.Length / sizeof(wchar_t);
+ /* If the target directory is a filesystem root, such as \??\C:\, then
+ * it already will have a trailing slash. Don't include this slash if
+ * we are already adding slashes via 'relpath'. This prevents an extra
+ * slash from being generated each time the link is extracted. And
+ * unlike on UNIX, the number of slashes in paths on Windows can be
+ * significant; Windows won't understand the link target if it contains
+ * too many slashes. */
+ if (target_ntpath_nchars > 0 && relpath_nchars > 0 &&
+ ctx->target_ntpath.Buffer[target_ntpath_nchars - 1] == L'\\')
+ target_ntpath_nchars--;
+
+ /* Also remove extra slashes from the beginning of 'relpath'. Normally
+ * this isn't needed, but this is here to make the extra slash(es) added
+ * by wimlib pre-v1.9.1 get removed automatically. */
+ while (relpath_nchars >= 2 &&
+ relpath[0] == L'\\' && relpath[1] == L'\\') {
+ relpath++;
+ relpath_nchars--;
+ }
+
fixed_subst_name_nchars = target_ntpath_nchars + relpath_nchars;
wchar_t fixed_subst_name[fixed_subst_name_nchars];
return 0;
}
-/* Called when starting to read a blob for extraction on Windows */
+/* Called when starting to read a blob for extraction */
static int
-begin_extract_blob(struct blob_descriptor *blob, void *_ctx)
+win32_begin_extract_blob(struct blob_descriptor *blob, void *_ctx)
{
struct win32_apply_ctx *ctx = _ctx;
const struct blob_extraction_target *targets = blob_extraction_targets(blob);
ctx->num_open_handles = 0;
ctx->data_buffer_ptr = NULL;
+ ctx->any_sparse_streams = false;
INIT_LIST_HEAD(&ctx->reparse_dentries);
INIT_LIST_HEAD(&ctx->encrypted_dentries);
return ret;
}
-/* Called when the next chunk of a blob has been read for extraction on Windows
- */
static int
-extract_chunk(const void *chunk, size_t size, void *_ctx)
+pwrite_to_handle(HANDLE h, const void *data, size_t size, u64 offset)
+{
+ const void * const end = data + size;
+ const void *p;
+ IO_STATUS_BLOCK iosb;
+ NTSTATUS status;
+
+ for (p = data; p != end; p += iosb.Information,
+ offset += iosb.Information)
+ {
+ LARGE_INTEGER offs = { .QuadPart = offset };
+
+ status = NtWriteFile(h, NULL, NULL, NULL, &iosb,
+ (void *)p, min(INT32_MAX, end - p),
+ &offs, NULL);
+ if (!NT_SUCCESS(status)) {
+ winnt_error(status,
+ L"Error writing data to target volume");
+ return WIMLIB_ERR_WRITE;
+ }
+ }
+ return 0;
+}
+
+/* Called when the next chunk of a blob has been read for extraction */
+static int
+win32_extract_chunk(const struct blob_descriptor *blob, u64 offset,
+ const void *chunk, size_t size, void *_ctx)
{
struct win32_apply_ctx *ctx = _ctx;
+ const void * const end = chunk + size;
+ const void *p;
+ bool zeroes;
+ size_t len;
+ unsigned i;
+ int ret;
- /* Write the data chunk to each open handle */
- for (unsigned i = 0; i < ctx->num_open_handles; i++) {
- u8 *bufptr = (u8 *)chunk;
- size_t bytes_remaining = size;
- NTSTATUS status;
- while (bytes_remaining) {
- ULONG count = min(0xFFFFFFFF, bytes_remaining);
-
- status = (*func_NtWriteFile)(ctx->open_handles[i],
- NULL, NULL, NULL,
- &ctx->iosb, bufptr, count,
- NULL, NULL);
- if (!NT_SUCCESS(status)) {
- winnt_error(status, L"Error writing data to target volume");
- return WIMLIB_ERR_WRITE;
+ /*
+ * For sparse streams, only write nonzero regions. This lets the
+ * filesystem use holes to represent zero regions.
+ */
+ for (p = chunk; p != end; p += len, offset += len) {
+ zeroes = maybe_detect_sparse_region(p, end - p, &len,
+ ctx->any_sparse_streams);
+ for (i = 0; i < ctx->num_open_handles; i++) {
+ if (!zeroes || !ctx->is_sparse_stream[i]) {
+ ret = pwrite_to_handle(ctx->open_handles[i],
+ p, len, offset);
+ if (ret)
+ return ret;
}
- bufptr += ctx->iosb.Information;
- bytes_remaining -= ctx->iosb.Information;
}
}
set_system_compression(HANDLE h, int format)
{
NTSTATUS status;
- IO_STATUS_BLOCK iosb;
struct {
struct wof_external_info wof_info;
struct file_provider_external_info file_info;
* versions of Windows (before Windows 10?). This can be a problem if
* the WOFADK driver is being used rather than the regular WOF, since
* WOFADK can be used on older versions of Windows. */
- status = (*func_NtFsControlFile)(h, NULL, NULL, NULL, &iosb,
- FSCTL_SET_EXTERNAL_BACKING,
- &in, sizeof(in), NULL, 0);
+ status = winnt_fsctl(h, FSCTL_SET_EXTERNAL_BACKING,
+ &in, sizeof(in), NULL, 0, NULL);
if (status == 0xC000046F) /* "Compressing this object would not save space." */
return STATUS_SUCCESS;
/* Hard-coded list of files which the Windows bootloader may need to access
* before the WOF driver has been loaded. */
-static wchar_t *bootloader_pattern_strings[] = {
+static const wchar_t * const bootloader_pattern_strings[] = {
L"*winload.*",
L"*winresume.*",
L"\\Windows\\AppPatch\\drvmain.sdb",
L"\\Windows\\System32\\CodeIntegrity\\driver.stl",
};
-static const struct string_set bootloader_patterns = {
- .strings = bootloader_pattern_strings,
+static const struct string_list bootloader_patterns = {
+ .strings = (wchar_t **)bootloader_pattern_strings,
.num_strings = ARRAY_LEN(bootloader_pattern_strings),
};
}
}
- (*func_NtClose)(h);
+ NtClose(h);
return status;
}
}
}
-/* Called when a blob has been fully read for extraction on Windows */
+/* Called when a blob has been fully read for extraction */
static int
-end_extract_blob(struct blob_descriptor *blob, int status, void *_ctx)
+win32_end_extract_blob(struct blob_descriptor *blob, int status, void *_ctx)
{
struct win32_apply_ctx *ctx = _ctx;
int ret;
const struct wim_dentry *dentry;
+ /* Extend sparse streams to their final size. */
+ if (ctx->any_sparse_streams && !status) {
+ for (unsigned i = 0; i < ctx->num_open_handles; i++) {
+ FILE_END_OF_FILE_INFORMATION info =
+ { .EndOfFile = { .QuadPart = blob->size } };
+ NTSTATUS ntstatus;
+
+ if (!ctx->is_sparse_stream[i])
+ continue;
+
+ ntstatus = NtSetInformationFile(ctx->open_handles[i],
+ &ctx->iosb,
+ &info, sizeof(info),
+ FileEndOfFileInformation);
+ if (!NT_SUCCESS(ntstatus)) {
+ winnt_error(ntstatus, L"Error writing data to "
+ "target volume (while extending)");
+ status = WIMLIB_ERR_WRITE;
+ break;
+ }
+ }
+ }
+
close_handles(ctx);
if (status)
FILE_ATTRIBUTE_SPARSE_FILE | \
FILE_ATTRIBUTE_COMPRESSED)
+static void
+set_object_id(HANDLE h, const struct wim_inode *inode,
+ struct win32_apply_ctx *ctx)
+{
+ const void *object_id;
+ u32 len;
+ NTSTATUS status;
+
+ if (!ctx->common.supported_features.object_ids)
+ return;
+
+ object_id = inode_get_object_id(inode, &len);
+ if (likely(object_id == NULL)) /* No object ID? */
+ return;
+
+ status = winnt_fsctl(h, FSCTL_SET_OBJECT_ID,
+ object_id, len, NULL, 0, NULL);
+ if (NT_SUCCESS(status))
+ return;
+
+ /* Object IDs must be unique within the filesystem. A duplicate might
+ * occur if an image containing object IDs is applied twice to the same
+ * filesystem. Arguably, the user should be warned in this case; but
+ * the reality seems to be that nothing important cares about object IDs
+ * except the Distributed Link Tracking Service... so for now these
+ * failures are just ignored. */
+ if (status == STATUS_DUPLICATE_NAME ||
+ status == STATUS_OBJECT_NAME_COLLISION)
+ return;
+
+ ctx->num_object_id_failures++;
+ if (ctx->num_object_id_failures < 10) {
+ winnt_warning(status, L"Can't set object ID on \"%ls\"",
+ current_path(ctx));
+ } else if (ctx->num_object_id_failures == 10) {
+ WARNING("Suppressing further warnings about failure to set "
+ "object IDs.");
+ }
+}
+
/* Set the security descriptor @desc, of @desc_size bytes, on the file with open
* handle @h. */
static NTSTATUS
*/
retry:
- status = (*func_NtSetSecurityObject)(h, info, desc);
+ status = NtSetSecurityObject(h, info, desc);
if (NT_SUCCESS(status))
goto out_maybe_free_desc;
FILE_BASIC_INFORMATION info;
NTSTATUS status;
- /* Set security descriptor if present and not in NO_ACLS mode */
+ /* Set the file's object ID if present and object IDs are supported by
+ * the filesystem. */
+ set_object_id(h, inode, ctx);
+
+ /* Set the file's security descriptor if present and we're not in
+ * NO_ACLS mode */
if (inode_has_security_descriptor(inode) &&
!(ctx->common.extract_flags & WIMLIB_EXTRACT_FLAG_NO_ACLS))
{
info.FileAttributes = FILE_ATTRIBUTE_NORMAL;
}
- status = (*func_NtSetInformationFile)(h, &ctx->iosb,
- &info, sizeof(info),
- FileBasicInformation);
+ status = NtSetInformationFile(h, &ctx->iosb, &info, sizeof(info),
+ FileBasicInformation);
/* On FAT volumes we get STATUS_INVALID_PARAMETER if we try to set
* attributes on the root directory. (Apparently because FAT doesn't
* actually have a place to store those attributes!) */
ret = do_apply_metadata_to_file(h, inode, ctx);
- (*func_NtClose)(h);
+ NtClose(h);
return ret;
}
goto out;
struct read_blob_callbacks cbs = {
- .begin_blob = begin_extract_blob,
- .consume_chunk = extract_chunk,
- .end_blob = end_extract_blob,
+ .begin_blob = win32_begin_extract_blob,
+ .continue_blob = win32_extract_chunk,
+ .end_blob = win32_end_extract_blob,
.ctx = ctx,
};
ret = extract_blob_list(&ctx->common, &cbs);
git://wimlib.net / wimlib / blobdiff