-#include "config.h"
+/*
+ * win32.c
+ *
+ * All the library code specific to native Windows builds is in here.
+ */
+
+/*
+ * Copyright (C) 2013 Eric Biggers
+ *
+ * This file is part of wimlib, a library for working with WIM files.
+ *
+ * wimlib is free software; you can redistribute it and/or modify it under the
+ * terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 3 of the License, or (at your option)
+ * any later version.
+ *
+ * wimlib is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ * A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with wimlib; if not, see http://www.gnu.org/licenses/.
+ */
+
+#ifndef __WIN32__
+# error "This file contains Windows code"
+#endif
-#if defined(__CYGWIN__) || defined(__WIN32__)
+#include "config.h"
#include <windows.h>
-# ifdef ERROR
-# undef ERROR
-# endif
+#include <ntdef.h>
+#include <wchar.h>
+#include <shlwapi.h> /* shlwapi.h for PathMatchSpecA() */
+#ifdef ERROR /* windows.h defines this */
+# undef ERROR
+#endif
-#include "wimlib_internal.h"
+#include "win32.h"
+#include "dentry.h"
+#include "lookup_table.h"
+#include "security.h"
+#include "endianness.h"
+#include <errno.h>
#ifdef ENABLE_ERROR_MESSAGES
-void win32_error(u32 err_code)
+void
+win32_error(u32 err_code)
{
char *buffer;
DWORD nchars;
LocalFree(buffer);
}
}
-#else
-#define win32_error(err_code)
+
+void
+win32_error_last()
+{
+ win32_error(GetLastError());
+}
#endif
-void *win32_open_file_readonly(const void *path)
+HANDLE
+win32_open_file_readonly(const wchar_t *path, bool data_only)
{
- return CreateFileW((const wchar_t*)path,
- FILE_READ_DATA |
- FILE_READ_ATTRIBUTES |
- READ_CONTROL |
- ACCESS_SYSTEM_SECURITY,
+ DWORD dwDesiredAccess = FILE_READ_DATA;
+ if (!data_only)
+ dwDesiredAccess |= FILE_READ_ATTRIBUTES | READ_CONTROL | ACCESS_SYSTEM_SECURITY;
+ return CreateFileW(path,
+ dwDesiredAccess,
FILE_SHARE_READ,
NULL, /* lpSecurityAttributes */
OPEN_EXISTING,
NULL /* hTemplateFile */);
}
-int win32_read_file(const char *filename,
- void *handle, u64 offset, size_t size, u8 *buf)
+int
+win32_read_file(const mbchar *filename,
+ void *handle, u64 offset, size_t size, void *buf)
{
HANDLE h = handle;
DWORD err;
return WIMLIB_ERR_READ;
}
-void win32_close_file(void *handle)
+void
+win32_close_file(void *handle)
{
CloseHandle((HANDLE)handle);
}
-#endif /* __CYGWIN__ || __WIN32__ */
+static u64
+FILETIME_to_u64(const FILETIME *ft)
+{
+ return ((u64)ft->dwHighDateTime << 32) | (u64)ft->dwLowDateTime;
+}
+
+static int
+win32_get_short_name(struct wim_dentry *dentry,
+ const wchar_t *path_utf16)
+{
+ WIN32_FIND_DATAW dat;
+ if (FindFirstFileW(path_utf16, &dat) &&
+ dat.cAlternateFileName[0] != L'\0')
+ {
+ size_t short_name_nbytes = wcslen(dat.cAlternateFileName) * 2;
+ size_t n = short_name_nbytes + sizeof(wchar_t);
+ dentry->short_name = MALLOC(n);
+ if (!dentry->short_name)
+ return WIMLIB_ERR_NOMEM;
+ memcpy(dentry->short_name, dat.cAlternateFileName, n);
+ dentry->short_name_nbytes = short_name_nbytes;
+ }
+ return 0;
+}
+
+static int
+win32_get_security_descriptor(struct wim_dentry *dentry,
+ struct sd_set *sd_set,
+ const wchar_t *path_utf16)
+{
+ SECURITY_INFORMATION requestedInformation;
+ DWORD lenNeeded = 0;
+ BOOL status;
+ DWORD err;
+
+ requestedInformation = DACL_SECURITY_INFORMATION |
+ SACL_SECURITY_INFORMATION |
+ OWNER_SECURITY_INFORMATION |
+ GROUP_SECURITY_INFORMATION;
+ /* Request length of security descriptor */
+ status = GetFileSecurityW(path_utf16, requestedInformation,
+ NULL, 0, &lenNeeded);
+ err = GetLastError();
+ if (!status && err == ERROR_INSUFFICIENT_BUFFER) {
+ DWORD len = lenNeeded;
+ char buf[len];
+ if (GetFileSecurityW(path_utf16, requestedInformation,
+ (PSECURITY_DESCRIPTOR)buf, len, &lenNeeded))
+ {
+ int security_id = sd_set_add_sd(sd_set, buf, len);
+ if (security_id < 0)
+ return WIMLIB_ERR_NOMEM;
+ else {
+ dentry->d_inode->i_security_id = security_id;
+ return 0;
+ }
+ } else {
+ err = GetLastError();
+ }
+ }
+ ERROR("Win32 API: Failed to read security descriptor of \"%ls\"",
+ path_utf16);
+ win32_error(err);
+ return WIMLIB_ERR_READ;
+}
+
+/* Reads the directory entries of directory using a Win32 API and recursively
+ * calls win32_build_dentry_tree() on them. */
+static int
+win32_recurse_directory(struct wim_dentry *root,
+ const mbchar *root_disk_path,
+ struct wim_lookup_table *lookup_table,
+ struct wim_security_data *sd,
+ const struct capture_config *config,
+ int add_image_flags,
+ wimlib_progress_func_t progress_func,
+ struct sd_set *sd_set,
+ const wchar_t *path_utf16,
+ size_t path_utf16_nchars)
+{
+ WIN32_FIND_DATAW dat;
+ HANDLE hFind;
+ DWORD err;
+ int ret;
+
+ {
+ /* Begin reading the directory by calling FindFirstFileW.
+ * Unlike UNIX opendir(), FindFirstFileW has file globbing built
+ * into it. But this isn't what we actually want, so just add a
+ * dummy glob to get all entries. */
+ wchar_t pattern_buf[path_utf16_nchars + 3];
+ memcpy(pattern_buf, path_utf16,
+ path_utf16_nchars * sizeof(wchar_t));
+ pattern_buf[path_utf16_nchars] = L'/';
+ pattern_buf[path_utf16_nchars + 1] = L'*';
+ pattern_buf[path_utf16_nchars + 2] = L'\0';
+ hFind = FindFirstFileW(pattern_buf, &dat);
+ }
+ if (hFind == INVALID_HANDLE_VALUE) {
+ err = GetLastError();
+ if (err == ERROR_FILE_NOT_FOUND) {
+ return 0;
+ } else {
+ ERROR("Win32 API: Failed to read directory \"%s\"",
+ root_disk_path);
+ win32_error(err);
+ return WIMLIB_ERR_READ;
+ }
+ }
+ ret = 0;
+ do {
+ /* Skip . and .. entries */
+ if (!(dat.cFileName[0] == L'.' &&
+ (dat.cFileName[1] == L'\0' ||
+ (dat.cFileName[1] == L'.' && dat.cFileName[2] == L'\0'))))
+ {
+ struct wim_dentry *child;
+
+ char *mbs_name;
+ size_t mbs_name_nbytes;
+ ret = utf16le_to_mbs(dat.cFileName,
+ wcslen(dat.cFileName) * sizeof(wchar_t),
+ &mbs_name,
+ &mbs_name_nbytes);
+ if (ret)
+ goto out_find_close;
+
+ char name[strlen(root_disk_path) + 1 + mbs_name_nbytes + 1];
+ sprintf(name, "%s/%s", root_disk_path, mbs_name);
+ FREE(mbs_name);
+ ret = win32_build_dentry_tree(&child, name, lookup_table,
+ sd, config, add_image_flags,
+ progress_func, sd_set);
+ if (ret)
+ goto out_find_close;
+ if (child)
+ dentry_add_child(root, child);
+ }
+ } while (FindNextFileW(hFind, &dat));
+ err = GetLastError();
+ if (err != ERROR_NO_MORE_FILES) {
+ ERROR("Win32 API: Failed to read directory \"%s\"", root_disk_path);
+ win32_error(err);
+ if (ret == 0)
+ ret = WIMLIB_ERR_READ;
+ }
+out_find_close:
+ FindClose(hFind);
+ return ret;
+}
+
+/* Load a reparse point into a WIM inode. It is just stored in memory.
+ *
+ * @hFile: Open handle to a reparse point, with permission to read the reparse
+ * data.
+ *
+ * @inode: WIM inode for the reparse point.
+ *
+ * @lookup_table: Stream lookup table for the WIM; an entry will be added to it
+ * for the reparse point unless an entry already exists for
+ * the exact same data stream.
+ *
+ * @path: External path to the parse point (UTF-8). Used for error messages
+ * only.
+ *
+ * Returns 0 on success; nonzero on failure. */
+static int
+win32_capture_reparse_point(HANDLE hFile,
+ struct wim_inode *inode,
+ struct wim_lookup_table *lookup_table,
+ const char *path)
+{
+ /* "Reparse point data, including the tag and optional GUID,
+ * cannot exceed 16 kilobytes." - MSDN */
+ char reparse_point_buf[16 * 1024];
+ DWORD bytesReturned;
+
+ if (!DeviceIoControl(hFile, FSCTL_GET_REPARSE_POINT,
+ NULL, 0, reparse_point_buf,
+ sizeof(reparse_point_buf), &bytesReturned, NULL))
+ {
+ DWORD err = GetLastError();
+ ERROR("Win32 API: Failed to get reparse data of \"%s\"", path);
+ win32_error(err);
+ return WIMLIB_ERR_READ;
+ }
+ if (bytesReturned < 8) {
+ ERROR("Reparse data on \"%s\" is invalid", path);
+ return WIMLIB_ERR_READ;
+ }
+ inode->i_reparse_tag = le32_to_cpu(*(u32*)reparse_point_buf);
+ return inode_add_ads_with_data(inode, "",
+ (const u8*)reparse_point_buf + 8,
+ bytesReturned - 8, lookup_table);
+}
+
+/* Calculate the SHA1 message digest of a Win32 data stream, which may be either
+ * an unnamed or named data stream.
+ *
+ * @path: Path to the file, with the stream noted at the end for named
+ * streams. UTF-16LE encoding.
+ *
+ * @hash: On success, the SHA1 message digest of the stream is written to
+ * this location.
+ *
+ * Returns 0 on success; nonzero on failure.
+ */
+static int
+win32_sha1sum(const wchar_t *path, u8 hash[SHA1_HASH_SIZE])
+{
+ HANDLE hFile;
+ SHA_CTX ctx;
+ u8 buf[32768];
+ DWORD bytesRead;
+ int ret;
+
+ hFile = win32_open_file_readonly(path, false);
+ if (hFile == INVALID_HANDLE_VALUE)
+ return WIMLIB_ERR_OPEN;
+
+ sha1_init(&ctx);
+ for (;;) {
+ if (!ReadFile(hFile, buf, sizeof(buf), &bytesRead, NULL)) {
+ ret = WIMLIB_ERR_READ;
+ goto out_close_handle;
+ }
+ if (bytesRead == 0)
+ break;
+ sha1_update(&ctx, buf, bytesRead);
+ }
+ ret = 0;
+ sha1_final(hash, &ctx);
+out_close_handle:
+ CloseHandle(hFile);
+ return ret;
+}
+
+/* Scans an unnamed or named stream of a Win32 file (not a reparse point
+ * stream); calculates its SHA1 message digest and either creates a `struct
+ * wim_lookup_table_entry' in memory for it, or uses an existing 'struct
+ * wim_lookup_table_entry' for an identical stream.
+ *
+ * @path_utf16: Path to the file (UTF-16LE).
+ *
+ * @path_utf16_nchars: Number of 2-byte characters in @path_utf16.
+ *
+ * @inode: WIM inode to save the stream into.
+ *
+ * @lookup_table: Stream lookup table for the WIM.
+ *
+ * @dat: A `WIN32_FIND_STREAM_DATA' structure that specifies the
+ * stream name.
+ *
+ * Returns 0 on success; nonzero on failure.
+ */
+static int
+win32_capture_stream(const wchar_t *path_utf16,
+ size_t path_utf16_nchars,
+ struct wim_inode *inode,
+ struct wim_lookup_table *lookup_table,
+ WIN32_FIND_STREAM_DATA *dat)
+{
+ struct wim_ads_entry *ads_entry;
+ u8 hash[SHA1_HASH_SIZE];
+ struct wim_lookup_table_entry *lte;
+ int ret;
+ wchar_t *p, *colon;
+ bool is_named_stream;
+ wchar_t *spath;
+ size_t spath_nchars;
+ DWORD err;
+
+ /* The stream name should be returned as :NAME:TYPE */
+ p = dat->cStreamName;
+ if (*p != L':')
+ goto out_invalid_stream_name;
+ p += 1;
+ colon = wcschr(p, L':');
+ if (colon == NULL)
+ goto out_invalid_stream_name;
+
+ if (wcscmp(colon + 1, L"$DATA")) {
+ /* Not a DATA stream */
+ ret = 0;
+ goto out;
+ }
+
+ is_named_stream = (p != colon);
+ if (is_named_stream) {
+ /* Allocate an ADS entry for the named stream. */
+ char *mbs_stream_name;
+ size_t mbs_stream_name_nbytes;
+ ret = utf16le_to_mbs(p,
+ (colon - p) * sizeof(wchar_t),
+ &mbs_stream_name,
+ &mbs_stream_name_nbytes);
+ if (ret)
+ goto out;
+ ads_entry = inode_add_ads(inode, mbs_stream_name);
+ FREE(mbs_stream_name);
+ if (!ads_entry) {
+ ret = WIMLIB_ERR_NOMEM;
+ goto out;
+ }
+ }
+
+ /* Create a UTF-16 string @spath that gives the filename, then a colon,
+ * then the stream name. Or, if it's an unnamed stream, just the
+ * filename. It is MALLOC()'ed so that it can be saved in the
+ * wim_lookup_table_entry if needed. */
+ *colon = '\0';
+ spath_nchars = path_utf16_nchars;
+ if (is_named_stream)
+ spath_nchars += colon - p + 1;
+
+ spath = MALLOC((spath_nchars + 1) * sizeof(wchar_t));
+ memcpy(spath, path_utf16, path_utf16_nchars * sizeof(wchar_t));
+ if (is_named_stream) {
+ spath[path_utf16_nchars] = L':';
+ memcpy(&spath[path_utf16_nchars + 1], p, (colon - p) * sizeof(wchar_t));
+ }
+ spath[spath_nchars] = L'\0';
+
+ ret = win32_sha1sum(spath, hash);
+ if (ret) {
+ err = GetLastError();
+ ERROR("Win32 API: Failed to read \"%ls\" to calculate SHA1sum",
+ path_utf16);
+ win32_error(err);
+ goto out_free_spath;
+ }
+
+ lte = __lookup_resource(lookup_table, hash);
+ if (lte) {
+ /* Use existing wim_lookup_table_entry that has the same SHA1
+ * message digest */
+ lte->refcnt++;
+ } else {
+ /* Make a new wim_lookup_table_entry */
+ lte = new_lookup_table_entry();
+ if (!lte) {
+ ret = WIMLIB_ERR_NOMEM;
+ goto out_free_spath;
+ }
+ lte->win32_file_on_disk = spath;
+ lte->file_on_disk_fp = INVALID_HANDLE_VALUE;
+ spath = NULL;
+ lte->resource_location = RESOURCE_WIN32;
+ lte->resource_entry.original_size = (uint64_t)dat->StreamSize.QuadPart;
+ lte->resource_entry.size = (uint64_t)dat->StreamSize.QuadPart;
+ copy_hash(lte->hash, hash);
+ lookup_table_insert(lookup_table, lte);
+ }
+ if (is_named_stream)
+ ads_entry->lte = lte;
+ else
+ inode->i_lte = lte;
+out_free_spath:
+ FREE(spath);
+out:
+ return ret;
+out_invalid_stream_name:
+ ERROR("Invalid stream name: \"%ls:%ls\"", path_utf16, dat->cStreamName);
+ ret = WIMLIB_ERR_READ;
+ goto out;
+}
+
+/* Scans a Win32 file for unnamed and named data streams (not reparse point
+ * streams).
+ *
+ * @path_utf16: Path to the file (UTF-16LE).
+ *
+ * @path_utf16_nchars: Number of 2-byte characters in @path_utf16.
+ *
+ * @inode: WIM inode to save the stream into.
+ *
+ * @lookup_table: Stream lookup table for the WIM.
+ *
+ * Returns 0 on success; nonzero on failure.
+ */
+static int
+win32_capture_streams(const wchar_t *path_utf16,
+ size_t path_utf16_nchars,
+ struct wim_inode *inode,
+ struct wim_lookup_table *lookup_table)
+{
+ WIN32_FIND_STREAM_DATA dat;
+ int ret;
+ HANDLE hFind;
+ DWORD err;
+
+ hFind = FindFirstStreamW(path_utf16, FindStreamInfoStandard, &dat, 0);
+ if (hFind == INVALID_HANDLE_VALUE) {
+ err = GetLastError();
+
+ /* Seems legal for this to return ERROR_HANDLE_EOF on reparse
+ * points and directories */
+ if ((inode->i_attributes &
+ (FILE_ATTRIBUTE_REPARSE_POINT | FILE_ATTRIBUTE_DIRECTORY))
+ && err == ERROR_HANDLE_EOF)
+ {
+ return 0;
+ } else {
+ ERROR("Win32 API: Failed to look up data streams of \"%ls\"",
+ path_utf16);
+ win32_error(err);
+ return WIMLIB_ERR_READ;
+ }
+ }
+ do {
+ ret = win32_capture_stream(path_utf16,
+ path_utf16_nchars,
+ inode, lookup_table,
+ &dat);
+ if (ret)
+ goto out_find_close;
+ } while (FindNextStreamW(hFind, &dat));
+ err = GetLastError();
+ if (err != ERROR_HANDLE_EOF) {
+ ERROR("Win32 API: Error reading data streams from \"%ls\"", path_utf16);
+ win32_error(err);
+ ret = WIMLIB_ERR_READ;
+ }
+out_find_close:
+ FindClose(hFind);
+ return ret;
+}
+
+/* Win32 version of capturing a directory tree */
+int
+win32_build_dentry_tree(struct wim_dentry **root_ret,
+ const char *root_disk_path,
+ struct wim_lookup_table *lookup_table,
+ struct wim_security_data *sd,
+ const struct capture_config *config,
+ int add_image_flags,
+ wimlib_progress_func_t progress_func,
+ void *extra_arg)
+{
+ struct wim_dentry *root = NULL;
+ int ret = 0;
+ struct wim_inode *inode;
+
+ wchar_t *path_utf16;
+ size_t path_utf16_nbytes;
+ size_t path_utf16_nchars;
+ struct sd_set *sd_set;
+ DWORD err;
+
+ if (exclude_path(root_disk_path, config, true)) {
+ if (add_image_flags & WIMLIB_ADD_IMAGE_FLAG_ROOT) {
+ ERROR("Cannot exclude the root directory from capture");
+ ret = WIMLIB_ERR_INVALID_CAPTURE_CONFIG;
+ goto out;
+ }
+ if ((add_image_flags & WIMLIB_ADD_IMAGE_FLAG_VERBOSE)
+ && progress_func)
+ {
+ union wimlib_progress_info info;
+ info.scan.cur_path = root_disk_path;
+ info.scan.excluded = true;
+ progress_func(WIMLIB_PROGRESS_MSG_SCAN_DENTRY, &info);
+ }
+ goto out;
+ }
+
+ if ((add_image_flags & WIMLIB_ADD_IMAGE_FLAG_VERBOSE)
+ && progress_func)
+ {
+ union wimlib_progress_info info;
+ info.scan.cur_path = root_disk_path;
+ info.scan.excluded = false;
+ progress_func(WIMLIB_PROGRESS_MSG_SCAN_DENTRY, &info);
+ }
+
+ if (extra_arg == NULL) {
+ sd_set = alloca(sizeof(struct sd_set));
+ sd_set->rb_root.rb_node = NULL,
+ sd_set->sd = sd;
+ } else {
+ sd_set = extra_arg;
+ }
+
+ ret = mbs_to_utf16le(root_disk_path, strlen(root_disk_path),
+ &path_utf16, &path_utf16_nbytes);
+ if (ret)
+ goto out_destroy_sd_set;
+ path_utf16_nchars = path_utf16_nbytes / sizeof(wchar_t);
+
+ HANDLE hFile = win32_open_file_readonly(path_utf16, false);
+ if (hFile == INVALID_HANDLE_VALUE) {
+ err = GetLastError();
+ ERROR("Win32 API: Failed to open \"%s\"", root_disk_path);
+ win32_error(err);
+ ret = WIMLIB_ERR_OPEN;
+ goto out_free_path_utf16;
+ }
+
+ BY_HANDLE_FILE_INFORMATION file_info;
+ if (!GetFileInformationByHandle(hFile, &file_info)) {
+ err = GetLastError();
+ ERROR("Win32 API: Failed to get file information for \"%s\"",
+ root_disk_path);
+ win32_error(err);
+ ret = WIMLIB_ERR_STAT;
+ goto out_close_handle;
+ }
+
+ /* Create a WIM dentry */
+ ret = new_dentry_with_timeless_inode(path_basename(root_disk_path), &root);
+ if (ret)
+ goto out_close_handle;
+
+ /* Start preparing the associated WIM inode */
+ inode = root->d_inode;
+
+ inode->i_attributes = file_info.dwFileAttributes;
+ inode->i_creation_time = FILETIME_to_u64(&file_info.ftCreationTime);
+ inode->i_last_write_time = FILETIME_to_u64(&file_info.ftLastWriteTime);
+ inode->i_last_access_time = FILETIME_to_u64(&file_info.ftLastAccessTime);
+ inode->i_ino = ((u64)file_info.nFileIndexHigh << 32) |
+ (u64)file_info.nFileIndexLow;
+
+ inode->i_resolved = 1;
+ add_image_flags &= ~(WIMLIB_ADD_IMAGE_FLAG_ROOT | WIMLIB_ADD_IMAGE_FLAG_SOURCE);
+
+ /* Get DOS name and security descriptor (if any). */
+ ret = win32_get_short_name(root, path_utf16);
+ if (ret)
+ goto out_close_handle;
+ ret = win32_get_security_descriptor(root, sd_set, path_utf16);
+ if (ret)
+ goto out_close_handle;
+
+ if (inode_is_directory(inode)) {
+ /* Directory (not a reparse point) --- recurse to children */
+
+ /* But first... directories may have alternate data streams that
+ * need to be captured. */
+ ret = win32_capture_streams(path_utf16,
+ path_utf16_nchars,
+ inode,
+ lookup_table);
+ if (ret)
+ goto out_close_handle;
+ ret = win32_recurse_directory(root,
+ root_disk_path,
+ lookup_table,
+ sd,
+ config,
+ add_image_flags,
+ progress_func,
+ sd_set,
+ path_utf16,
+ path_utf16_nchars);
+ } else if (inode->i_attributes & FILE_ATTRIBUTE_REPARSE_POINT) {
+ /* Reparse point: save the reparse tag and data */
+ ret = win32_capture_reparse_point(hFile,
+ inode,
+ lookup_table,
+ root_disk_path);
+ } else {
+ /* Not a directory, not a reparse point; capture the default
+ * file contents and any alternate data streams. */
+ ret = win32_capture_streams(path_utf16,
+ path_utf16_nchars,
+ inode,
+ lookup_table);
+ }
+out_close_handle:
+ CloseHandle(hFile);
+out_free_path_utf16:
+ FREE(path_utf16);
+out_destroy_sd_set:
+ if (extra_arg == NULL)
+ destroy_sd_set(sd_set);
+out:
+ if (ret == 0)
+ *root_ret = root;
+ else
+ free_dentry_tree(root, lookup_table);
+ return ret;
+}
+
+/* Replacement for POSIX fnmatch() (partial functionality only) */
+int
+fnmatch(const char *pattern, const char *string, int flags)
+{
+ if (PathMatchSpecA(string, pattern))
+ return 0;
+ else
+ return FNM_NOMATCH;
+}
+
+static int
+win32_set_reparse_data(HANDLE h,
+ u32 reparse_tag,
+ const struct wim_lookup_table_entry *lte,
+ const wchar_t *path)
+{
+ int ret;
+ u8 *buf;
+ size_t len;
+
+ if (!lte) {
+ WARNING("\"%ls\" is marked as a reparse point but had no reparse data",
+ path);
+ return 0;
+ }
+ len = wim_resource_size(lte);
+ if (len > 16 * 1024 - 8) {
+ WARNING("\"%ls\": reparse data too long!", path);
+ return 0;
+ }
+
+ /* The WIM stream omits the ReparseTag and ReparseDataLength fields, so
+ * leave 8 bytes of space for them at the beginning of the buffer, then
+ * set them manually. */
+ buf = alloca(len + 8);
+ ret = read_full_wim_resource(lte, buf + 8, 0);
+ if (ret)
+ return ret;
+ *(u32*)(buf + 0) = cpu_to_le32(reparse_tag);
+ *(u16*)(buf + 4) = cpu_to_le16(len);
+ *(u16*)(buf + 6) = 0;
+
+ /* Set the reparse data on the open file using the
+ * FSCTL_SET_REPARSE_POINT ioctl.
+ *
+ * There are contradictions in Microsoft's documentation for this:
+ *
+ * "If hDevice was opened without specifying FILE_FLAG_OVERLAPPED,
+ * lpOverlapped is ignored."
+ *
+ * --- So setting lpOverlapped to NULL is okay since it's ignored.
+ *
+ * "If lpOverlapped is NULL, lpBytesReturned cannot be NULL. Even when an
+ * operation returns no output data and lpOutBuffer is NULL,
+ * DeviceIoControl makes use of lpBytesReturned. After such an
+ * operation, the value of lpBytesReturned is meaningless."
+ *
+ * --- So lpOverlapped not really ignored, as it affects another
+ * parameter. This is the actual behavior: lpBytesReturned must be
+ * specified, even though lpBytesReturned is documented as:
+ *
+ * "Not used with this operation; set to NULL."
+ */
+ DWORD bytesReturned;
+ if (!DeviceIoControl(h, FSCTL_SET_REPARSE_POINT, buf, len + 8,
+ NULL, 0,
+ &bytesReturned /* lpBytesReturned */,
+ NULL /* lpOverlapped */))
+ {
+ DWORD err = GetLastError();
+ ERROR("Failed to set reparse data on \"%ls\"", path);
+ win32_error(err);
+ return WIMLIB_ERR_WRITE;
+ }
+ return 0;
+}
+
+
+static int
+win32_extract_chunk(const void *buf, size_t len, u64 offset, void *arg)
+{
+ HANDLE hStream = arg;
+
+ DWORD nbytes_written;
+ wimlib_assert(len <= 0xffffffff);
+
+ if (!WriteFile(hStream, buf, len, &nbytes_written, NULL) ||
+ nbytes_written != len)
+ {
+ DWORD err = GetLastError();
+ ERROR("WriteFile(): write error");
+ win32_error(err);
+ return WIMLIB_ERR_WRITE;
+ }
+ return 0;
+}
+
+static int
+do_win32_extract_stream(HANDLE hStream, struct wim_lookup_table_entry *lte)
+{
+ return extract_wim_resource(lte, wim_resource_size(lte),
+ win32_extract_chunk, hStream);
+}
+
+static int
+win32_extract_stream(const struct wim_inode *inode,
+ const wchar_t *path,
+ const wchar_t *stream_name_utf16,
+ struct wim_lookup_table_entry *lte)
+{
+ wchar_t *stream_path;
+ HANDLE h;
+ int ret;
+ DWORD err;
+ DWORD creationDisposition = CREATE_ALWAYS;
+
+ if (stream_name_utf16) {
+ /* Named stream. Create a buffer that contains the UTF-16LE
+ * string [./]@path:@stream_name_utf16. This is needed to
+ * create and open the stream using CreateFileW(). I'm not
+ * aware of any other APIs to do this. Note: the '$DATA' suffix
+ * seems to be unneeded. Additional note: a "./" prefix needs
+ * to be added when the path is not absolute to avoid ambiguity
+ * with drive letters. */
+ size_t stream_path_nchars;
+ size_t path_nchars;
+ size_t stream_name_nchars;
+ const wchar_t *prefix;
+
+ path_nchars = wcslen(path);
+ stream_name_nchars = wcslen(stream_name_utf16);
+ stream_path_nchars = path_nchars + 1 + stream_name_nchars;
+ if (path[0] != L'/' && path[0] != L'\\') {
+ prefix = L"./";
+ stream_path_nchars += 2;
+ } else {
+ prefix = L"";
+ }
+ stream_path = alloca((stream_path_nchars + 1) * sizeof(wchar_t));
+ swprintf(stream_path, stream_path_nchars + 1, L"%ls%ls:%ls",
+ prefix, path, stream_name_utf16);
+ } else {
+ /* Unnamed stream; its path is just the path to the file itself.
+ * */
+ stream_path = (wchar_t*)path;
+
+ /* Directories must be created with CreateDirectoryW(). Then
+ * the call to CreateFileW() will merely open the directory that
+ * was already created rather than creating a new file. */
+ if (inode->i_attributes & FILE_ATTRIBUTE_DIRECTORY) {
+ if (!CreateDirectoryW(stream_path, NULL)) {
+ err = GetLastError();
+ if (err != ERROR_ALREADY_EXISTS) {
+ ERROR("Failed to create directory \"%ls\"",
+ stream_path);
+ win32_error(err);
+ ret = WIMLIB_ERR_MKDIR;
+ goto fail;
+ }
+ }
+ DEBUG("Created directory \"%ls\"", stream_path);
+ if (!(inode->i_attributes & FILE_ATTRIBUTE_REPARSE_POINT)) {
+ ret = 0;
+ goto out;
+ }
+ creationDisposition = OPEN_EXISTING;
+ }
+ }
+
+ DEBUG("Opening \"%ls\"", stream_path);
+ h = CreateFileW(stream_path,
+ GENERIC_WRITE | WRITE_OWNER | WRITE_DAC | ACCESS_SYSTEM_SECURITY,
+ 0,
+ NULL,
+ creationDisposition,
+ FILE_FLAG_OPEN_REPARSE_POINT |
+ FILE_FLAG_BACKUP_SEMANTICS |
+ inode->i_attributes,
+ NULL);
+ if (h == INVALID_HANDLE_VALUE) {
+ err = GetLastError();
+ ERROR("Failed to create \"%ls\"", stream_path);
+ win32_error(err);
+ ret = WIMLIB_ERR_OPEN;
+ goto fail;
+ }
+
+ if (inode->i_attributes & FILE_ATTRIBUTE_REPARSE_POINT &&
+ stream_name_utf16 == NULL)
+ {
+ DEBUG("Setting reparse data on \"%ls\"", path);
+ ret = win32_set_reparse_data(h, inode->i_reparse_tag, lte, path);
+ if (ret)
+ goto fail_close_handle;
+ } else {
+ if (lte) {
+ DEBUG("Extracting \"%ls\" (len = %"PRIu64")",
+ stream_path, wim_resource_size(lte));
+ ret = do_win32_extract_stream(h, lte);
+ if (ret)
+ goto fail_close_handle;
+ }
+ }
+
+ DEBUG("Closing \"%ls\"", stream_path);
+ if (!CloseHandle(h)) {
+ err = GetLastError();
+ ERROR("Failed to close \"%ls\"", stream_path);
+ win32_error(err);
+ ret = WIMLIB_ERR_WRITE;
+ goto fail;
+ }
+ ret = 0;
+ goto out;
+fail_close_handle:
+ CloseHandle(h);
+fail:
+ ERROR("Error extracting %ls", stream_path);
+out:
+ return ret;
+}
+
+/*
+ * Creates a file, directory, or reparse point and extracts all streams to it
+ * (unnamed data stream and/or reparse point stream, plus any alternate data
+ * streams). This in Win32-specific code.
+ *
+ * @inode: WIM inode for this file or directory.
+ * @path: UTF-16LE external path to extract the inode to.
+ *
+ * Returns 0 on success; nonzero on failure.
+ */
+static int
+win32_extract_streams(const struct wim_inode *inode,
+ const wchar_t *path, u64 *completed_bytes_p)
+{
+ struct wim_lookup_table_entry *unnamed_lte;
+ int ret;
+
+ unnamed_lte = inode_unnamed_lte_resolved(inode);
+ ret = win32_extract_stream(inode, path, NULL, unnamed_lte);
+ if (ret)
+ goto out;
+ if (unnamed_lte)
+ *completed_bytes_p += wim_resource_size(unnamed_lte);
+ for (u16 i = 0; i < inode->i_num_ads; i++) {
+ const struct wim_ads_entry *ads_entry = &inode->i_ads_entries[i];
+ if (ads_entry->stream_name_nbytes != 0) {
+ /* Skip special UNIX data entries (see documentation for
+ * WIMLIB_ADD_IMAGE_FLAG_UNIX_DATA) */
+ if (ads_entry->stream_name_nbytes == WIMLIB_UNIX_DATA_TAG_UTF16LE_NBYTES
+ && !memcmp(ads_entry->stream_name,
+ WIMLIB_UNIX_DATA_TAG_UTF16LE,
+ WIMLIB_UNIX_DATA_TAG_UTF16LE_NBYTES))
+ continue;
+ ret = win32_extract_stream(inode,
+ path,
+ ads_entry->stream_name,
+ ads_entry->lte);
+ if (ret)
+ break;
+ if (ads_entry->lte)
+ *completed_bytes_p += wim_resource_size(ads_entry->lte);
+ }
+ }
+out:
+ return ret;
+}
+
+/*
+ * Sets the security descriptor on an extracted file. This is Win32-specific
+ * code.
+ *
+ * @inode: The WIM inode that was extracted and has a security descriptor.
+ * @path: UTF-16LE external path that the inode was extracted to.
+ * @sd: Security data for the WIM image.
+ *
+ * Returns 0 on success; nonzero on failure.
+ */
+static int win32_set_security_data(const struct wim_inode *inode,
+ const wchar_t *path,
+ const struct wim_security_data *sd)
+{
+ SECURITY_INFORMATION securityInformation = DACL_SECURITY_INFORMATION |
+ SACL_SECURITY_INFORMATION |
+ OWNER_SECURITY_INFORMATION |
+ GROUP_SECURITY_INFORMATION;
+ if (!SetFileSecurityW(path, securityInformation,
+ (PSECURITY_DESCRIPTOR)sd->descriptors[inode->i_security_id]))
+ {
+ DWORD err = GetLastError();
+ ERROR("Can't set security descriptor on \"%ls\"", path);
+ win32_error(err);
+ return WIMLIB_ERR_WRITE;
+ }
+ return 0;
+}
+
+/* Extract a file, directory, reparse point, or hard link to an
+ * already-extracted file using the Win32 API */
+int win32_do_apply_dentry(const mbchar *output_path,
+ size_t output_path_nbytes,
+ struct wim_dentry *dentry,
+ struct apply_args *args)
+{
+ wchar_t *utf16le_path;
+ size_t utf16le_path_nbytes;
+ DWORD err;
+ int ret;
+ struct wim_inode *inode = dentry->d_inode;
+
+ ret = mbs_to_utf16le(output_path, output_path_nbytes,
+ &utf16le_path, &utf16le_path_nbytes);
+ if (ret)
+ return ret;
+
+ if (inode->i_nlink > 1 && inode->i_extracted_file != NULL) {
+ /* Linked file, with another name already extracted. Create a
+ * hard link. */
+ DEBUG("Creating hard link \"%ls => %ls\"",
+ utf16le_path, inode->i_extracted_file);
+ if (!CreateHardLinkW(utf16le_path, inode->i_extracted_file, NULL))
+ {
+ err = GetLastError();
+ ERROR("Can't create hard link \"%ls => %ls\"",
+ utf16le_path, inode->i_extracted_file);
+ ret = WIMLIB_ERR_LINK;
+ win32_error(err);
+ }
+ } else {
+ /* Create the file, directory, or reparse point, and extract the
+ * data streams. */
+ ret = win32_extract_streams(inode, utf16le_path,
+ &args->progress.extract.completed_bytes);
+ if (ret)
+ goto out_free_utf16_path;
+
+ /* Set security descriptor if present */
+ if (inode->i_security_id != -1) {
+ DEBUG("Setting security descriptor %d on %s",
+ inode->i_security_id, output_path);
+ ret = win32_set_security_data(inode,
+ utf16le_path,
+ wim_const_security_data(args->w));
+ if (ret)
+ goto out_free_utf16_path;
+ }
+ if (inode->i_nlink > 1) {
+ /* Save extracted path for a later call to
+ * CreateHardLinkW() if this inode has multiple links.
+ * */
+ inode->i_extracted_file = utf16le_path;
+ goto out;
+ }
+ }
+out_free_utf16_path:
+ FREE(utf16le_path);
+out:
+ return ret;
+}
+
+/* Set timestamps on an extracted file using the Win32 API */
+int
+win32_do_apply_dentry_timestamps(const mbchar *output_path,
+ size_t output_path_nbytes,
+ const struct wim_dentry *dentry,
+ const struct apply_args *args)
+{
+ /* Win32 */
+ wchar_t *utf16le_path;
+ size_t utf16le_path_nbytes;
+ DWORD err;
+ HANDLE h;
+ int ret;
+ const struct wim_inode *inode = dentry->d_inode;
+
+ ret = mbs_to_utf16le(output_path, output_path_nbytes,
+ &utf16le_path, &utf16le_path_nbytes);
+ if (ret)
+ return ret;
+
+ DEBUG("Opening \"%s\" to set timestamps", output_path);
+ h = CreateFileW(utf16le_path,
+ GENERIC_WRITE | WRITE_OWNER | WRITE_DAC | ACCESS_SYSTEM_SECURITY,
+ FILE_SHARE_READ,
+ NULL,
+ OPEN_EXISTING,
+ FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OPEN_REPARSE_POINT,
+ NULL);
+
+ if (h == INVALID_HANDLE_VALUE)
+ err = GetLastError();
+ FREE(utf16le_path);
+ if (h == INVALID_HANDLE_VALUE)
+ goto fail;
+
+ FILETIME creationTime = {.dwLowDateTime = inode->i_creation_time & 0xffffffff,
+ .dwHighDateTime = inode->i_creation_time >> 32};
+ FILETIME lastAccessTime = {.dwLowDateTime = inode->i_last_access_time & 0xffffffff,
+ .dwHighDateTime = inode->i_last_access_time >> 32};
+ FILETIME lastWriteTime = {.dwLowDateTime = inode->i_last_write_time & 0xffffffff,
+ .dwHighDateTime = inode->i_last_write_time >> 32};
+
+ DEBUG("Calling SetFileTime() on \"%s\"", output_path);
+ if (!SetFileTime(h, &creationTime, &lastAccessTime, &lastWriteTime)) {
+ err = GetLastError();
+ CloseHandle(h);
+ goto fail;
+ }
+ DEBUG("Closing \"%s\"", output_path);
+ if (!CloseHandle(h)) {
+ err = GetLastError();
+ goto fail;
+ }
+ goto out;
+fail:
+ /* Only warn if setting timestamps failed. */
+ WARNING("Can't set timestamps on \"%s\"", output_path);
+ win32_error(err);
+out:
+ return 0;
+}
+
+/* Replacement for POSIX fsync() */
+int
+fsync(int fd)
+{
+ HANDLE h = (HANDLE)_get_osfhandle(fd);
+ if (h == INVALID_HANDLE_VALUE) {
+ ERROR("Could not get Windows handle for file descriptor");
+ win32_error(GetLastError());
+ errno = EBADF;
+ return -1;
+ }
+ if (!FlushFileBuffers(h)) {
+ ERROR("Could not flush file buffers to disk");
+ win32_error(GetLastError());
+ errno = EIO;
+ return -1;
+ }
+ return 0;
+}
+
+/* Use the Win32 API to get the number of processors */
+unsigned
+win32_get_number_of_processors()
+{
+ SYSTEM_INFO sysinfo;
+ GetSystemInfo(&sysinfo);
+ return sysinfo.dwNumberOfProcessors;
+}
+
+/* Replacement for POSIX-2008 realpath(). Warning: partial functionality only
+ * (resolved_path must be NULL). Also I highly doubt that GetFullPathName
+ * really does the right thing under all circumstances. */
+mbchar *
+realpath(const mbchar *path, mbchar *resolved_path)
+{
+ DWORD ret;
+ wimlib_assert(resolved_path == NULL);
+
+ ret = GetFullPathNameA(path, 0, NULL, NULL);
+ if (!ret)
+ goto fail_win32;
+
+ resolved_path = MALLOC(ret + 1);
+ if (!resolved_path)
+ goto fail;
+ ret = GetFullPathNameA(path, ret, resolved_path, NULL);
+ if (!ret) {
+ free(resolved_path);
+ goto fail_win32;
+ }
+ return resolved_path;
+fail_win32:
+ win32_error(GetLastError());
+fail:
+ return NULL;
+}
+
+char *
+nl_langinfo(nl_item item)
+{
+ wimlib_assert(item == CODESET);
+ static char buf[64];
+ strcpy(buf, "Unknown");
+ return buf;
+}
git://wimlib.net / wimlib / blobdiff