/*
* win32.c
*
- * All the code specific to native Windows builds is in here.
+ * All the library code specific to native Windows builds is in here.
*/
/*
* along with wimlib; if not, see http://www.gnu.org/licenses/.
*/
-#ifndef __WIN32__
-# error "This file contains Windows code"
-#endif
+#ifdef __WIN32__
#include "config.h"
#include <windows.h>
#include <ntdef.h>
#include <wchar.h>
-#include <shlwapi.h>
-#ifdef ERROR
+#include <shlwapi.h> /* shlwapi.h for PathMatchSpecW() */
+#ifdef ERROR /* windows.h defines this */
# undef ERROR
#endif
-
-/* Microsoft's swprintf() violates the C standard and they require programmers
- * to do this weird define to get the correct function. */
-#define swprintf _snwprintf
-
#include "win32.h"
#include "dentry.h"
#include "lookup_table.h"
#include "security.h"
+#include "endianness.h"
+#include <pthread.h>
#include <errno.h>
+#define MAX_GET_SD_ACCESS_DENIED_WARNINGS 1
+#define MAX_GET_SACL_PRIV_NOTHELD_WARNINGS 1
+struct win32_capture_state {
+ unsigned long num_get_sd_access_denied;
+ unsigned long num_get_sacl_priv_notheld;
+};
+
+#define MAX_SET_SD_ACCESS_DENIED_WARNINGS 1
+#define MAX_SET_SACL_PRIV_NOTHELD_WARNINGS 1
+
+/* Pointers to functions that are not available on all targetted versions of
+ * Windows (XP and later). NOTE: The WINAPI annotations seem to be important; I
+ * assume it specifies a certain calling convention. */
+
+/* Vista and later */
+static HANDLE (WINAPI *win32func_FindFirstStreamW)(LPCWSTR lpFileName,
+ STREAM_INFO_LEVELS InfoLevel,
+ LPVOID lpFindStreamData,
+ DWORD dwFlags) = NULL;
+
+/* Vista and later */
+static BOOL (WINAPI *win32func_FindNextStreamW)(HANDLE hFindStream,
+ LPVOID lpFindStreamData) = NULL;
+
+static HMODULE hKernel32 = NULL;
+
+/* Try to dynamically load some functions */
+void
+win32_global_init()
+{
+ DWORD err;
+
+ if (hKernel32 == NULL) {
+ DEBUG("Loading Kernel32.dll");
+ hKernel32 = LoadLibraryW(L"Kernel32.dll");
+ if (hKernel32 == NULL) {
+ err = GetLastError();
+ WARNING("Can't load Kernel32.dll");
+ win32_error(err);
+ return;
+ }
+ }
+
+ DEBUG("Looking for FindFirstStreamW");
+ win32func_FindFirstStreamW = (void*)GetProcAddress(hKernel32, "FindFirstStreamW");
+ if (!win32func_FindFirstStreamW) {
+ WARNING("Could not find function FindFirstStreamW() in Kernel32.dll!");
+ WARNING("Capturing alternate data streams will not be supported.");
+ return;
+ }
+
+ DEBUG("Looking for FindNextStreamW");
+ win32func_FindNextStreamW = (void*)GetProcAddress(hKernel32, "FindNextStreamW");
+ if (!win32func_FindNextStreamW) {
+ WARNING("Could not find function FindNextStreamW() in Kernel32.dll!");
+ WARNING("Capturing alternate data streams will not be supported.");
+ win32func_FindFirstStreamW = NULL;
+ }
+}
+
+void
+win32_global_cleanup()
+{
+ if (hKernel32 != NULL) {
+ DEBUG("Closing Kernel32.dll");
+ FreeLibrary(hKernel32);
+ hKernel32 = NULL;
+ }
+}
+
+static const wchar_t *capture_access_denied_msg =
+L" If you are not running this program as the administrator, you may\n"
+ " need to do so, so that all data and metadata can be backed up.\n"
+ " Otherwise, there may be no way to access the desired data or\n"
+ " metadata without taking ownership of the file or directory.\n"
+ ;
+
+static const wchar_t *apply_access_denied_msg =
+L"If you are not running this program as the administrator, you may\n"
+ " need to do so, so that all data and metadata can be extracted\n"
+ " exactly as the origignal copy. However, if you do not care that\n"
+ " the security descriptors are extracted correctly, you could run\n"
+ " `wimlib-imagex apply' with the --no-acls flag instead.\n"
+ ;
+
#ifdef ENABLE_ERROR_MESSAGES
-void win32_error(u32 err_code)
+void
+win32_error(u32 err_code)
{
- char *buffer;
+ wchar_t *buffer;
DWORD nchars;
- nchars = FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER,
+ nchars = FormatMessageW(FORMAT_MESSAGE_FROM_SYSTEM |
+ FORMAT_MESSAGE_ALLOCATE_BUFFER,
NULL, err_code, 0,
- (char*)&buffer, 0, NULL);
+ (wchar_t*)&buffer, 0, NULL);
if (nchars == 0) {
ERROR("Error printing error message! "
"Computer will self-destruct in 3 seconds.");
} else {
- ERROR("Win32 error: %s", buffer);
+ ERROR("Win32 error: %ls", buffer);
LocalFree(buffer);
}
}
-#else
-#define win32_error(err_code)
+
+void
+win32_error_last()
+{
+ win32_error(GetLastError());
+}
#endif
-void *win32_open_file_readonly(const void *path)
+static HANDLE
+win32_open_existing_file(const wchar_t *path, DWORD dwDesiredAccess)
{
- return CreateFileW((const wchar_t*)path,
- FILE_READ_DATA |
- 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)
+HANDLE
+win32_open_file_data_only(const wchar_t *path)
+{
+ return win32_open_existing_file(path, FILE_READ_DATA);
+}
+
+int
+win32_read_file(const wchar_t *filename,
+ void *handle, u64 offset, size_t size, void *buf)
{
HANDLE h = handle;
DWORD err;
if (ReadFile(h, buf, size, &bytesRead, NULL) && bytesRead == size)
return 0;
err = GetLastError();
- ERROR("Error reading \"%s\"", filename);
+ ERROR("Error reading \"%ls\"", filename);
win32_error(err);
return WIMLIB_ERR_READ;
}
-void win32_close_file(void *handle)
+void
+win32_close_file(void *handle)
{
CloseHandle((HANDLE)handle);
}
-static bool win32_modify_privilege(const char *privilege, bool enable)
-{
- HANDLE hToken;
- LUID luid;
- TOKEN_PRIVILEGES newState;
- bool ret = false;
-
- DEBUG("%s privilege %s",
- enable ? "Enabling" : "Disabling", privilege);
-
- if (!OpenProcessToken(GetCurrentProcess(),
- TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY,
- &hToken))
- {
- DEBUG("OpenProcessToken() failed");
- goto out;
- }
-
- if (!LookupPrivilegeValue(NULL, privilege, &luid)) {
- DEBUG("LookupPrivilegeValue() failed");
- goto out;
- }
-
- newState.PrivilegeCount = 1;
- newState.Privileges[0].Luid = luid;
- newState.Privileges[0].Attributes = (enable ? SE_PRIVILEGE_ENABLED : 0);
- ret = AdjustTokenPrivileges(hToken, FALSE, &newState, 0, NULL, NULL);
- if (!ret)
- DEBUG("AdjustTokenPrivileges() failed");
- CloseHandle(hToken);
-out:
- if (!ret) {
- DWORD err = GetLastError();
- win32_error(err);
- WARNING("Failed to %s privilege %s",
- enable ? "enable" : "disable", privilege);
- WARNING("The program will continue, but if permission issues are "
- "encountered, you may need to run this program as the administrator");
- }
- return ret;
-}
-
-static bool win32_acquire_privilege(const char *privilege)
-{
- return win32_modify_privilege(privilege, true);
-}
-
-static bool win32_release_privilege(const char *privilege)
-{
- return win32_modify_privilege(privilege, false);
-}
-
-
-void win32_acquire_capture_privileges()
-{
- win32_acquire_privilege(SE_BACKUP_NAME);
- win32_acquire_privilege(SE_SECURITY_NAME);
-}
-
-void win32_release_capture_privileges()
-{
- win32_release_privilege(SE_BACKUP_NAME);
- win32_release_privilege(SE_SECURITY_NAME);
-}
-
-void win32_acquire_restore_privileges()
-{
- win32_acquire_privilege(SE_RESTORE_NAME);
- win32_acquire_privilege(SE_SECURITY_NAME);
- win32_acquire_privilege(SE_TAKE_OWNERSHIP_NAME);
-}
-
-void win32_release_restore_privileges()
-{
- win32_release_privilege(SE_RESTORE_NAME);
- win32_release_privilege(SE_SECURITY_NAME);
- win32_release_privilege(SE_TAKE_OWNERSHIP_NAME);
-}
-
-static u64 FILETIME_to_u64(const FILETIME *ft)
+static u64
+FILETIME_to_u64(const FILETIME *ft)
{
return ((u64)ft->dwHighDateTime << 32) | (u64)ft->dwLowDateTime;
}
-
-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);
-
-static int win32_get_short_name(struct wim_dentry *dentry,
- const wchar_t *path_utf16)
+static int
+win32_get_short_name(struct wim_dentry *dentry, const wchar_t *path)
{
WIN32_FIND_DATAW dat;
- if (FindFirstFileW(path_utf16, &dat) &&
- dat.cAlternateFileName[0] != L'\0')
- {
- size_t short_name_len = wcslen(dat.cAlternateFileName) * 2;
- size_t n = short_name_len + sizeof(wchar_t);
+ if (FindFirstFileW(path, &dat) && dat.cAlternateFileName[0] != L'\0') {
+ size_t short_name_nbytes = wcslen(dat.cAlternateFileName) *
+ sizeof(wchar_t);
+ 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_len = short_name_len;
+ dentry->short_name_nbytes = short_name_nbytes;
}
+ /* If we can't read the short filename for some reason, we just ignore
+ * the error and assume the file has no short name. I don't think this
+ * should be an issue, since the short names are essentially obsolete
+ * anyway. */
return 0;
}
-static int win32_get_security_descriptor(struct wim_dentry *dentry,
- struct sd_set *sd_set,
- const wchar_t *path_utf16)
+static int
+win32_get_security_descriptor(struct wim_dentry *dentry,
+ struct sd_set *sd_set,
+ const wchar_t *path,
+ struct win32_capture_state *state,
+ int add_image_flags)
{
SECURITY_INFORMATION requestedInformation;
DWORD lenNeeded = 0;
BOOL status;
DWORD err;
+ unsigned long n;
requestedInformation = DACL_SECURITY_INFORMATION |
SACL_SECURITY_INFORMATION |
OWNER_SECURITY_INFORMATION |
GROUP_SECURITY_INFORMATION;
+again:
/* Request length of security descriptor */
- status = GetFileSecurityW(path_utf16, requestedInformation,
+ status = GetFileSecurityW(path, requestedInformation,
NULL, 0, &lenNeeded);
err = GetLastError();
if (!status && err == ERROR_INSUFFICIENT_BUFFER) {
DWORD len = lenNeeded;
char buf[len];
- if (GetFileSecurityW(path_utf16, requestedInformation,
+ if (GetFileSecurityW(path, requestedInformation,
(PSECURITY_DESCRIPTOR)buf, len, &lenNeeded))
{
int security_id = sd_set_add_sd(sd_set, buf, len);
err = GetLastError();
}
}
- ERROR("Win32 API: Failed to read security descriptor of \"%ls\"",
- path_utf16);
- win32_error(err);
- return WIMLIB_ERR_READ;
+
+ if (add_image_flags & WIMLIB_ADD_IMAGE_FLAG_STRICT_ACLS)
+ goto fail;
+
+ switch (err) {
+ case ERROR_PRIVILEGE_NOT_HELD:
+ if (requestedInformation & SACL_SECURITY_INFORMATION) {
+ n = state->num_get_sacl_priv_notheld++;
+ requestedInformation &= ~SACL_SECURITY_INFORMATION;
+ if (n < MAX_GET_SACL_PRIV_NOTHELD_WARNINGS) {
+ WARNING(
+"We don't have enough privileges to read the full security\n"
+" descriptor of \"%ls\"!\n"
+" Re-trying with SACL omitted.\n", path);
+ } else if (n == MAX_GET_SACL_PRIV_NOTHELD_WARNINGS) {
+ WARNING(
+"Suppressing further privileges not held error messages when reading\n"
+" security descriptors.");
+ }
+ goto again;
+ }
+ /* Fall through */
+ case ERROR_ACCESS_DENIED:
+ n = state->num_get_sd_access_denied++;
+ if (n < MAX_GET_SD_ACCESS_DENIED_WARNINGS) {
+ WARNING("Failed to read security descriptor of \"%ls\": "
+ "Access denied!\n%ls", path, capture_access_denied_msg);
+ } else if (n == MAX_GET_SD_ACCESS_DENIED_WARNINGS) {
+ WARNING("Suppressing further access denied errors messages i"
+ "when reading security descriptors");
+ }
+ return 0;
+ default:
+fail:
+ ERROR("Failed to read security descriptor of \"%ls\"", path);
+ win32_error(err);
+ return WIMLIB_ERR_READ;
+ }
}
+static int
+win32_build_dentry_tree_recursive(struct wim_dentry **root_ret,
+ wchar_t *path,
+ size_t path_num_chars,
+ struct wim_lookup_table *lookup_table,
+ struct sd_set *sd_set,
+ const struct wimlib_capture_config *config,
+ int add_image_flags,
+ wimlib_progress_func_t progress_func,
+ struct win32_capture_state *state);
+
/* Reads the directory entries of directory using a Win32 API and recursively
- * calls build_dentry_tree() on them. */
-static int win32_recurse_directory(struct wim_dentry *root,
- 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,
- struct sd_set *sd_set,
- const wchar_t *path_utf16,
- size_t path_utf16_nchars)
+ * calls win32_build_dentry_tree() on them. */
+static int
+win32_recurse_directory(struct wim_dentry *root,
+ wchar_t *dir_path,
+ size_t dir_path_num_chars,
+ struct wim_lookup_table *lookup_table,
+ struct sd_set *sd_set,
+ const struct wimlib_capture_config *config,
+ int add_image_flags,
+ wimlib_progress_func_t progress_func,
+ struct win32_capture_state *state)
{
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);
- }
+ /* 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. */
+ dir_path[dir_path_num_chars] = L'/';
+ dir_path[dir_path_num_chars + 1] = L'*';
+ dir_path[dir_path_num_chars + 2] = L'\0';
+ hFind = FindFirstFileW(dir_path, &dat);
+ dir_path[dir_path_num_chars] = L'\0';
+
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);
+ ERROR("Failed to read directory \"%ls\"", dir_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 *utf8_name;
- size_t utf8_name_nbytes;
- ret = utf16_to_utf8((const char*)dat.cFileName,
- wcslen(dat.cFileName) * sizeof(wchar_t),
- &utf8_name,
- &utf8_name_nbytes);
- if (ret)
- goto out_find_close;
-
- char name[strlen(root_disk_path) + 1 + utf8_name_nbytes + 1];
- sprintf(name, "%s/%s", root_disk_path, utf8_name);
- FREE(utf8_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);
- }
+ if (dat.cFileName[0] == L'.' &&
+ (dat.cFileName[1] == L'\0' ||
+ (dat.cFileName[1] == L'.' &&
+ dat.cFileName[2] == L'\0')))
+ continue;
+ size_t filename_len = wcslen(dat.cFileName);
+
+ dir_path[dir_path_num_chars] = L'/';
+ wmemcpy(dir_path + dir_path_num_chars + 1,
+ dat.cFileName,
+ filename_len + 1);
+
+ struct wim_dentry *child;
+ size_t path_len = dir_path_num_chars + 1 + filename_len;
+ ret = win32_build_dentry_tree_recursive(&child,
+ dir_path,
+ path_len,
+ lookup_table,
+ sd_set,
+ config,
+ add_image_flags,
+ progress_func,
+ state);
+ dir_path[dir_path_num_chars] = L'\0';
+ 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);
+ ERROR("Failed to read directory \"%ls\"", dir_path);
win32_error(err);
if (ret == 0)
ret = WIMLIB_ERR_READ;
* 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.
+ * @path: External path to the reparse point. 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)
+static int
+win32_capture_reparse_point(HANDLE hFile,
+ struct wim_inode *inode,
+ struct wim_lookup_table *lookup_table,
+ const wchar_t *path)
{
/* "Reparse point data, including the tag and optional GUID,
* cannot exceed 16 kilobytes." - MSDN */
DWORD bytesReturned;
if (!DeviceIoControl(hFile, FSCTL_GET_REPARSE_POINT,
- NULL, 0, reparse_point_buf,
- sizeof(reparse_point_buf), &bytesReturned, NULL))
+ NULL, /* "Not used with this operation; set to NULL" */
+ 0, /* "Not used with this operation; set to 0" */
+ reparse_point_buf, /* "A pointer to a buffer that
+ receives the reparse point data */
+ sizeof(reparse_point_buf), /* "The size of the output
+ buffer, in bytes */
+ &bytesReturned,
+ NULL))
{
DWORD err = GetLastError();
- ERROR("Win32 API: Failed to get reparse data of \"%s\"", path);
+ ERROR("Failed to get reparse data of \"%ls\"", path);
win32_error(err);
return WIMLIB_ERR_READ;
}
if (bytesReturned < 8) {
- ERROR("Reparse data on \"%s\" is invalid", path);
+ ERROR("Reparse data on \"%ls\" is invalid", path);
return WIMLIB_ERR_READ;
}
- inode->i_reparse_tag = *(u32*)reparse_point_buf;
- return inode_add_ads_with_data(inode, "",
- (const u8*)reparse_point_buf + 8,
+ inode->i_reparse_tag = le32_to_cpu(*(u32*)reparse_point_buf);
+ return inode_add_ads_with_data(inode, L"",
+ reparse_point_buf + 8,
bytesReturned - 8, lookup_table);
}
*
* Returns 0 on success; nonzero on failure.
*/
-static int win32_sha1sum(const wchar_t *path, u8 hash[SHA1_HASH_SIZE])
+static int
+win32_sha1sum(const wchar_t *path, u8 hash[SHA1_HASH_SIZE])
{
HANDLE hFile;
SHA_CTX ctx;
DWORD bytesRead;
int ret;
- hFile = win32_open_file_readonly(path);
+ hFile = win32_open_file_data_only(path);
if (hFile == INVALID_HANDLE_VALUE)
return WIMLIB_ERR_OPEN;
* 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: Path to the file (UTF-16LE).
*
- * @path_utf16_nchars: Number of 2-byte characters in @path_utf16.
+ * @path_num_chars: Number of 2-byte characters in @path.
*
* @inode: WIM inode to save the stream into.
*
*
* 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)
+static int
+win32_capture_stream(const wchar_t *path,
+ size_t path_num_chars,
+ 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;
+ wchar_t *stream_name, *colon;
+ size_t stream_name_nchars;
bool is_named_stream;
wchar_t *spath;
size_t spath_nchars;
DWORD err;
+ size_t spath_buf_nbytes;
+ const wchar_t *relpath_prefix;
+ const wchar_t *colonchar;
/* The stream name should be returned as :NAME:TYPE */
- p = dat->cStreamName;
- if (*p != L':')
+ stream_name = dat->cStreamName;
+ if (*stream_name != L':')
goto out_invalid_stream_name;
- p += 1;
- colon = wcschr(p, L':');
+ stream_name += 1;
+ colon = wcschr(stream_name, L':');
if (colon == NULL)
goto out_invalid_stream_name;
goto out;
}
- is_named_stream = (p != colon);
+ *colon = '\0';
+
+ stream_name_nchars = colon - stream_name;
+ is_named_stream = (stream_name_nchars != 0);
+
if (is_named_stream) {
/* Allocate an ADS entry for the named stream. */
- char *utf8_stream_name;
- size_t utf8_stream_name_len;
- ret = utf16_to_utf8((const char *)p,
- (colon - p) * sizeof(wchar_t),
- &utf8_stream_name,
- &utf8_stream_name_len);
- if (ret)
- goto out;
- ads_entry = inode_add_ads(inode, utf8_stream_name);
- FREE(utf8_stream_name);
+ ads_entry = inode_add_ads_utf16le(inode, stream_name,
+ stream_name_nchars * sizeof(wchar_t));
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
+ /* Create a UTF-16LE 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));
+ * wim_lookup_table_entry if needed.
+ *
+ * As yet another special case, relative paths need to be changed to
+ * begin with an explicit "./" so that, for example, a file t:ads, where
+ * :ads is the part we added, is not interpreted as a file on the t:
+ * drive. */
+ spath_nchars = path_num_chars;
+ relpath_prefix = L"";
+ colonchar = L"";
if (is_named_stream) {
- spath[path_utf16_nchars] = L':';
- memcpy(&spath[path_utf16_nchars + 1], p, (colon - p) * sizeof(wchar_t));
+ spath_nchars += 1 + stream_name_nchars;
+ colonchar = L":";
+ if (path_num_chars == 1 &&
+ path[0] != L'/' &&
+ path[0] != L'\\')
+ {
+ spath_nchars += 2;
+ relpath_prefix = L"./";
+ }
}
- spath[spath_nchars] = L'\0';
+
+ spath_buf_nbytes = (spath_nchars + 1) * sizeof(wchar_t);
+ spath = MALLOC(spath_buf_nbytes);
+
+ swprintf(spath, L"%ls%ls%ls%ls",
+ relpath_prefix, path, colonchar, stream_name);
ret = win32_sha1sum(spath, hash);
if (ret) {
err = GetLastError();
- ERROR("Win32 API: Failed to read \"%ls\" to calculate SHA1sum",
- path_utf16);
+ ERROR("Failed to read \"%ls\" to calculate SHA1sum", spath);
win32_error(err);
goto out_free_spath;
}
ret = WIMLIB_ERR_NOMEM;
goto out_free_spath;
}
- lte->file_on_disk = (char*)spath;
+ lte->file_on_disk = spath;
+ lte->win32_file_on_disk_fp = INVALID_HANDLE_VALUE;
spath = NULL;
lte->resource_location = RESOURCE_WIN32;
lte->resource_entry.original_size = (uint64_t)dat->StreamSize.QuadPart;
out:
return ret;
out_invalid_stream_name:
- ERROR("Invalid stream name: \"%ls:%ls\"", path_utf16, dat->cStreamName);
+ ERROR("Invalid stream name: \"%ls:%ls\"", path, 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: Path to the file (UTF-16LE).
*
- * @path_utf16_nchars: Number of 2-byte characters in @path_utf16.
+ * @path_num_chars: Number of 2-byte characters in @path.
*
* @inode: WIM inode to save the stream into.
*
* @lookup_table: Stream lookup table for the WIM.
*
+ * @file_size: Size of unnamed data stream. (Used only if alternate
+ * data streams API appears to be unavailable.)
+ *
* 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)
+static int
+win32_capture_streams(const wchar_t *path,
+ size_t path_num_chars,
+ struct wim_inode *inode,
+ struct wim_lookup_table *lookup_table,
+ u64 file_size)
{
WIN32_FIND_STREAM_DATA dat;
int ret;
HANDLE hFind;
DWORD err;
- hFind = FindFirstStreamW(path_utf16, FindStreamInfoStandard, &dat, 0);
+ if (win32func_FindFirstStreamW == NULL)
+ goto unnamed_only;
+
+ hFind = win32func_FindFirstStreamW(path, FindStreamInfoStandard, &dat, 0);
if (hFind == INVALID_HANDLE_VALUE) {
err = GetLastError();
+ if (err == ERROR_CALL_NOT_IMPLEMENTED)
+ goto unnamed_only;
+
/* Seems legal for this to return ERROR_HANDLE_EOF on reparse
* points and directories */
if ((inode->i_attributes &
{
return 0;
} else {
- ERROR("Win32 API: Failed to look up data streams of \"%ls\"",
- path_utf16);
- win32_error(err);
- return WIMLIB_ERR_READ;
+ if (err == ERROR_ACCESS_DENIED) {
+ /* XXX This maybe should be an error. */
+ WARNING("Failed to look up data streams "
+ "of \"%ls\": Access denied!\n%ls",
+ path, capture_access_denied_msg);
+ return 0;
+ } else {
+ ERROR("Failed to look up data streams "
+ "of \"%ls\"", path);
+ win32_error(err);
+ return WIMLIB_ERR_READ;
+ }
}
}
do {
- ret = win32_capture_stream(path_utf16,
- path_utf16_nchars,
+ ret = win32_capture_stream(path,
+ path_num_chars,
inode, lookup_table,
&dat);
if (ret)
goto out_find_close;
- } while (FindNextStreamW(hFind, &dat));
+ } while (win32func_FindNextStreamW(hFind, &dat));
err = GetLastError();
if (err != ERROR_HANDLE_EOF) {
- ERROR("Win32 API: Error reading data streams from \"%ls\"", path_utf16);
+ ERROR("Win32 API: Error reading data streams from \"%ls\"", path);
win32_error(err);
ret = WIMLIB_ERR_READ;
}
out_find_close:
FindClose(hFind);
return ret;
+unnamed_only:
+ /* FindFirstStreamW() API is not available. Only capture the unnamed
+ * data stream. */
+ if (inode->i_attributes &
+ (FILE_ATTRIBUTE_REPARSE_POINT | FILE_ATTRIBUTE_DIRECTORY))
+ {
+ ret = 0;
+ } else {
+ /* Just create our own WIN32_FIND_STREAM_DATA for an unnamed
+ * stream to reduce the code to a call to the
+ * already-implemented win32_capture_stream() */
+ wcscpy(dat.cStreamName, L"::$DATA");
+ dat.StreamSize.QuadPart = file_size;
+ ret = win32_capture_stream(path,
+ path_num_chars,
+ inode, lookup_table,
+ &dat);
+ }
+ 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)
+static int
+win32_build_dentry_tree_recursive(struct wim_dentry **root_ret,
+ wchar_t *path,
+ size_t path_num_chars,
+ struct wim_lookup_table *lookup_table,
+ struct sd_set *sd_set,
+ const struct wimlib_capture_config *config,
+ int add_image_flags,
+ wimlib_progress_func_t progress_func,
+ struct win32_capture_state *state)
{
struct wim_dentry *root = NULL;
- int ret = 0;
struct wim_inode *inode;
-
- wchar_t *path_utf16;
- size_t path_utf16_nchars;
- struct sd_set *sd_set;
DWORD err;
+ u64 file_size;
+ int ret = 0;
- if (exclude_path(root_disk_path, config, true)) {
+ if (exclude_path(path, path_num_chars, 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)
+ if ((add_image_flags & WIMLIB_ADD_IMAGE_FLAG_EXCLUDE_VERBOSE)
&& progress_func)
{
union wimlib_progress_info info;
- info.scan.cur_path = root_disk_path;
+ info.scan.cur_path = path;
info.scan.excluded = true;
progress_func(WIMLIB_PROGRESS_MSG_SCAN_DENTRY, &info);
}
&& progress_func)
{
union wimlib_progress_info info;
- info.scan.cur_path = root_disk_path;
+ info.scan.cur_path = 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 = utf8_to_utf16(root_disk_path, strlen(root_disk_path),
- (char**)&path_utf16, &path_utf16_nchars);
- if (ret)
- goto out_destroy_sd_set;
- path_utf16_nchars /= sizeof(wchar_t);
-
- HANDLE hFile = win32_open_file_readonly(path_utf16);
+ HANDLE hFile = win32_open_existing_file(path,
+ FILE_READ_DATA | FILE_READ_ATTRIBUTES);
if (hFile == INVALID_HANDLE_VALUE) {
err = GetLastError();
- ERROR("Win32 API: Failed to open \"%s\"", root_disk_path);
+ ERROR("Win32 API: Failed to open \"%ls\"", path);
win32_error(err);
ret = WIMLIB_ERR_OPEN;
- goto out_free_path_utf16;
+ goto out;
}
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);
+ ERROR("Win32 API: Failed to get file information for \"%ls\"",
+ path);
win32_error(err);
ret = WIMLIB_ERR_STAT;
goto out_close_handle;
}
/* Create a WIM dentry */
- root = new_dentry_with_timeless_inode(path_basename(root_disk_path));
- if (!root) {
- if (errno == EILSEQ)
- ret = WIMLIB_ERR_INVALID_UTF8_STRING;
- else if (errno == ENOMEM)
- ret = WIMLIB_ERR_NOMEM;
- else
- ret = WIMLIB_ERR_ICONV_NOT_AVAILABLE;
+ ret = new_dentry_with_timeless_inode(path_basename_with_len(path, path_num_chars),
+ &root);
+ if (ret)
goto out_close_handle;
- }
/* Start preparing the associated WIM inode */
inode = root->d_inode;
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);
+ ret = win32_get_short_name(root, path);
if (ret)
goto out_close_handle;
+ if (!(add_image_flags & WIMLIB_ADD_IMAGE_FLAG_NO_ACLS)) {
+ ret = win32_get_security_descriptor(root, sd_set, path, state,
+ add_image_flags);
+ if (ret)
+ goto out_close_handle;
+ }
+
+ file_size = ((u64)file_info.nFileSizeHigh << 32) |
+ (u64)file_info.nFileSizeLow;
+
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,
+ ret = win32_capture_streams(path,
+ path_num_chars,
inode,
- lookup_table);
+ lookup_table,
+ file_size);
if (ret)
goto out_close_handle;
ret = win32_recurse_directory(root,
- root_disk_path,
+ path,
+ path_num_chars,
lookup_table,
- sd,
+ sd_set,
config,
add_image_flags,
progress_func,
- sd_set,
- path_utf16,
- path_utf16_nchars);
+ state);
} else if (inode->i_attributes & FILE_ATTRIBUTE_REPARSE_POINT) {
- /* Reparse point: save the reparse tag and data */
+ /* Reparse point: save the reparse tag and data. Alternate data
+ * streams are not captured, if it's even possible for a reparse
+ * point to have alternate data streams... */
ret = win32_capture_reparse_point(hFile,
inode,
lookup_table,
- root_disk_path);
+ 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,
+ ret = win32_capture_streams(path,
+ path_num_chars,
inode,
- lookup_table);
+ lookup_table,
+ file_size);
}
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;
return ret;
}
-/* Replacement for POSIX fnmatch() (partial functionality only) */
-extern int fnmatch(const char *pattern, const char *string, int flags)
+static void
+win32_do_capture_warnings(const struct win32_capture_state *state,
+ int add_image_flags)
{
- if (PathMatchSpecA(string, pattern))
- return 0;
- else
- return FNM_NOMATCH;
+ if (state->num_get_sacl_priv_notheld == 0 &&
+ state->num_get_sd_access_denied == 0)
+ return;
+
+ WARNING("");
+ WARNING("Built dentry tree successfully, but with the following problem(s):");
+ if (state->num_get_sacl_priv_notheld != 0) {
+ WARNING("Could not capture SACL (System Access Control List)\n"
+ " on %lu files or directories.",
+ state->num_get_sacl_priv_notheld);
+ }
+ if (state->num_get_sd_access_denied != 0) {
+ WARNING("Could not capture security descriptor at all\n"
+ " on %lu files or directories.",
+ state->num_get_sd_access_denied);
+ }
+ WARNING(
+ "Try running the program as the Administrator to make sure all the\n"
+" desired metadata has been captured exactly. However, if you\n"
+" do not care about capturing security descriptors correctly, then\n"
+" nothing more needs to be done%ls\n",
+ (add_image_flags & WIMLIB_ADD_IMAGE_FLAG_NO_ACLS) ? L"." :
+ L", although you might consider\n"
+" passing the --no-acls flag to `wimlib-imagex capture' or\n"
+" `wimlib-imagex append' to explicitly capture no security\n"
+" descriptors.\n");
}
-static int win32_set_reparse_data(HANDLE h,
- u32 reparse_tag,
- const struct wim_lookup_table_entry *lte,
- const wchar_t *path)
+/* Win32 version of capturing a directory tree */
+int
+win32_build_dentry_tree(struct wim_dentry **root_ret,
+ const wchar_t *root_disk_path,
+ struct wim_lookup_table *lookup_table,
+ struct sd_set *sd_set,
+ const struct wimlib_capture_config *config,
+ int add_image_flags,
+ wimlib_progress_func_t progress_func,
+ void *extra_arg)
+{
+ size_t path_nchars;
+ wchar_t *path;
+ int ret;
+ struct win32_capture_state state;
+
+ path_nchars = wcslen(root_disk_path);
+ if (path_nchars > 32767)
+ return WIMLIB_ERR_INVALID_PARAM;
+
+ /* There is no check for overflow later when this buffer is being used!
+ * But the max path length on NTFS is 32767 characters, and paths need
+ * to be written specially to even go past 260 characters, so we should
+ * be okay with 32770 characters. */
+ path = MALLOC(32770 * sizeof(wchar_t));
+ if (!path)
+ return WIMLIB_ERR_NOMEM;
+
+ wmemcpy(path, root_disk_path, path_nchars + 1);
+
+ memset(&state, 0, sizeof(state));
+ ret = win32_build_dentry_tree_recursive(root_ret,
+ path,
+ path_nchars,
+ lookup_table,
+ sd_set,
+ config,
+ add_image_flags,
+ progress_func,
+ &state);
+ FREE(path);
+ if (ret == 0)
+ win32_do_capture_warnings(&state, add_image_flags);
+ return ret;
+}
+
+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;
ret = read_full_wim_resource(lte, buf + 8, 0);
if (ret)
return ret;
- *(u32*)(buf + 0) = reparse_tag;
- *(u16*)(buf + 4) = len;
+ *(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
return 0;
}
+/*
+ * Sets the security descriptor on an extracted file.
+ */
+static int
+win32_set_security_data(const struct wim_inode *inode,
+ const wchar_t *path,
+ struct apply_args *args)
+{
+ PSECURITY_DESCRIPTOR descriptor;
+ unsigned long n;
+ DWORD err;
+
+ descriptor = wim_const_security_data(args->w)->descriptors[inode->i_security_id];
+
+ SECURITY_INFORMATION securityInformation = DACL_SECURITY_INFORMATION |
+ SACL_SECURITY_INFORMATION |
+ OWNER_SECURITY_INFORMATION |
+ GROUP_SECURITY_INFORMATION;
+again:
+ if (SetFileSecurityW(path, securityInformation, descriptor))
+ return 0;
+ err = GetLastError();
+ if (args->extract_flags & WIMLIB_EXTRACT_FLAG_STRICT_ACLS)
+ goto fail;
+ switch (err) {
+ case ERROR_PRIVILEGE_NOT_HELD:
+ if (securityInformation & SACL_SECURITY_INFORMATION) {
+ n = args->num_set_sacl_priv_notheld++;
+ securityInformation &= ~SACL_SECURITY_INFORMATION;
+ if (n < MAX_SET_SACL_PRIV_NOTHELD_WARNINGS) {
+ WARNING(
+"We don't have enough privileges to set the full security\n"
+" descriptor on \"%ls\"!\n", path);
+ if (args->num_set_sd_access_denied +
+ args->num_set_sacl_priv_notheld == 1)
+ {
+ WARNING("%ls", apply_access_denied_msg);
+ }
+ WARNING("Re-trying with SACL omitted.\n", path);
+ } else if (n == MAX_GET_SACL_PRIV_NOTHELD_WARNINGS) {
+ WARNING(
+"Suppressing further 'privileges not held' error messages when setting\n"
+" security descriptors.");
+ }
+ goto again;
+ }
+ /* Fall through */
+ case ERROR_INVALID_OWNER:
+ case ERROR_ACCESS_DENIED:
+ n = args->num_set_sd_access_denied++;
+ if (n < MAX_SET_SD_ACCESS_DENIED_WARNINGS) {
+ WARNING("Failed to set security descriptor on \"%ls\": "
+ "Access denied!\n", path);
+ if (args->num_set_sd_access_denied +
+ args->num_set_sacl_priv_notheld == 1)
+ {
+ WARNING("%ls", apply_access_denied_msg);
+ }
+ } else if (n == MAX_SET_SD_ACCESS_DENIED_WARNINGS) {
+ WARNING(
+"Suppressing further access denied error messages when setting\n"
+" security descriptors");
+ }
+ return 0;
+ default:
+fail:
+ ERROR("Failed to set security descriptor on \"%ls\"", path);
+ win32_error(err);
+ return WIMLIB_ERR_WRITE;
+ }
+}
+
-static int win32_extract_chunk(const u8 *buf, size_t len, u64 offset, void *arg)
+static int
+win32_extract_chunk(const void *buf, size_t len, u64 offset, void *arg)
{
HANDLE hStream = arg;
return 0;
}
-static int do_win32_extract_stream(HANDLE hStream, struct wim_lookup_table_entry *lte)
+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)
+static bool
+path_is_root_of_drive(const wchar_t *path)
+{
+ if (!*path)
+ return false;
+
+ if (*path != L'/' && *path != L'\\') {
+ if (*(path + 1) == L':')
+ path += 2;
+ else
+ return false;
+ }
+ while (*path == L'/' || *path == L'\\')
+ path++;
+ return (*path == L'\0');
+}
+
+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;
if (stream_name_utf16) {
/* Named stream. Create a buffer that contains the UTF-16LE
- * string [./]@path:@stream_name_utf16. This is needed to
+ * 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
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'\\') {
+ if (path[0] != cpu_to_le16(L'\0') &&
+ path[0] != cpu_to_le16(L'/') &&
+ path[0] != cpu_to_le16(L'\\') &&
+ path[1] != cpu_to_le16(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",
+ swprintf(stream_path, L"%ls%ls:%ls",
prefix, path, stream_name_utf16);
} else {
/* Unnamed stream; its path is just the path to the file itself.
if (inode->i_attributes & FILE_ATTRIBUTE_DIRECTORY) {
if (!CreateDirectoryW(stream_path, NULL)) {
err = GetLastError();
- if (err != ERROR_ALREADY_EXISTS) {
+ switch (err) {
+ case ERROR_ALREADY_EXISTS:
+ break;
+ case ERROR_ACCESS_DENIED:
+ if (path_is_root_of_drive(path))
+ break;
+ /* Fall through */
+ default:
ERROR("Failed to create directory \"%ls\"",
stream_path);
win32_error(err);
DEBUG("Opening \"%ls\"", stream_path);
h = CreateFileW(stream_path,
- GENERIC_WRITE | WRITE_OWNER | WRITE_DAC | ACCESS_SYSTEM_SECURITY,
+ GENERIC_WRITE,
0,
NULL,
creationDisposition,
*
* 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)
+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;
*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_len != 0) {
+ 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_len == WIMLIB_UNIX_DATA_TAG_LEN
- && !memcmp(ads_entry->stream_name_utf8,
- WIMLIB_UNIX_DATA_TAG,
- WIMLIB_UNIX_DATA_TAG_LEN))
+ 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,
- (const wchar_t*)ads_entry->stream_name,
+ ads_entry->stream_name,
ads_entry->lte);
if (ret)
break;
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)
+/* Extract a file, directory, reparse point, or hard link to an
+ * already-extracted file using the Win32 API */
+int
+win32_do_apply_dentry(const wchar_t *output_path,
+ size_t output_path_num_chars,
+ struct wim_dentry *dentry,
+ struct apply_args *args)
{
- 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;
-}
-
-int win32_apply_dentry(const char *output_path,
- size_t output_path_len,
- const struct wim_dentry *dentry,
- struct apply_args *args)
-{
- char *utf16_path;
- size_t utf16_path_len;
- DWORD err;
int ret;
struct wim_inode *inode = dentry->d_inode;
-
- ret = utf8_to_utf16(output_path, output_path_len,
- &utf16_path, &utf16_path_len);
- if (ret)
- return ret;
+ DWORD err;
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\"",
- (const wchar_t*)utf16_path,
- (const wchar_t*)inode->i_extracted_file);
- if (!CreateHardLinkW((const wchar_t*)utf16_path,
- (const wchar_t*)inode->i_extracted_file,
- NULL))
- {
+ output_path, inode->i_extracted_file);
+ if (!CreateHardLinkW(output_path, inode->i_extracted_file, NULL)) {
err = GetLastError();
ERROR("Can't create hard link \"%ls => %ls\"",
- (const wchar_t*)utf16_path,
- (const wchar_t*)inode->i_extracted_file);
- ret = WIMLIB_ERR_LINK;
+ output_path, inode->i_extracted_file);
win32_error(err);
+ return WIMLIB_ERR_LINK;
}
} else {
/* Create the file, directory, or reparse point, and extract the
* data streams. */
- ret = win32_extract_streams(inode, (const wchar_t*)utf16_path,
+ ret = win32_extract_streams(inode, output_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,
- (const wchar_t*)utf16_path,
- wim_const_security_data(args->w));
+ return ret;
+
+ if (inode->i_security_id >= 0 &&
+ !(args->extract_flags & WIMLIB_EXTRACT_FLAG_NO_ACLS))
+ {
+ ret = win32_set_security_data(inode, output_path, args);
if (ret)
- goto out_free_utf16_path;
+ return ret;
}
if (inode->i_nlink > 1) {
/* Save extracted path for a later call to
* CreateHardLinkW() if this inode has multiple links.
* */
- inode->i_extracted_file = utf16_path;
- goto out;
+ inode->i_extracted_file = WSTRDUP(output_path);
+ if (!inode->i_extracted_file)
+ ret = WIMLIB_ERR_NOMEM;
}
}
-out_free_utf16_path:
- FREE(utf16_path);
-out:
- return ret;
+ return 0;
}
-int win32_apply_dentry_timestamps(const char *output_path,
- size_t output_path_len,
- const struct wim_dentry *dentry,
- const struct apply_args *args)
+/* Set timestamps on an extracted file using the Win32 API */
+int
+win32_do_apply_dentry_timestamps(const wchar_t *path,
+ size_t path_num_chars,
+ const struct wim_dentry *dentry,
+ const struct apply_args *args)
{
- /* Win32 */
- char *utf16_path;
- size_t utf16_path_len;
DWORD err;
HANDLE h;
- int ret;
const struct wim_inode *inode = dentry->d_inode;
- ret = utf8_to_utf16(output_path, output_path_len,
- &utf16_path, &utf16_path_len);
- if (ret)
- return ret;
-
- DEBUG("Opening \"%s\" to set timestamps", output_path);
- h = CreateFileW((const wchar_t*)utf16_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)
+ DEBUG("Opening \"%ls\" to set timestamps", path);
+ h = win32_open_existing_file(path, FILE_WRITE_ATTRIBUTES);
+ if (h == INVALID_HANDLE_VALUE) {
err = GetLastError();
- FREE(utf16_path);
- if (h == INVALID_HANDLE_VALUE)
goto fail;
+ }
FILETIME creationTime = {.dwLowDateTime = inode->i_creation_time & 0xffffffff,
.dwHighDateTime = inode->i_creation_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);
+ DEBUG("Calling SetFileTime() on \"%ls\"", path);
if (!SetFileTime(h, &creationTime, &lastAccessTime, &lastWriteTime)) {
err = GetLastError();
CloseHandle(h);
goto fail;
}
- DEBUG("Closing \"%s\"", output_path);
+ DEBUG("Closing \"%ls\"", 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);
+ /* Only warn if setting timestamps failed; still return 0. */
+ WARNING("Can't set timestamps on \"%ls\"", path);
win32_error(err);
out:
return 0;
}
/* Replacement for POSIX fsync() */
-int fsync(int fd)
+int
+fsync(int fd)
{
- HANDLE h = (HANDLE)_get_osfhandle(fd);
+ DWORD err;
+ HANDLE h;
+
+ h = (HANDLE)_get_osfhandle(fd);
if (h == INVALID_HANDLE_VALUE) {
+ err = GetLastError();
+ ERROR("Could not get Windows handle for file descriptor");
+ win32_error(err);
errno = EBADF;
return -1;
}
if (!FlushFileBuffers(h)) {
+ err = GetLastError();
+ ERROR("Could not flush file buffers to disk");
+ win32_error(err);
errno = EIO;
return -1;
}
return 0;
}
-unsigned win32_get_number_of_processors()
+/* 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. */
+wchar_t *
+realpath(const wchar_t *path, wchar_t *resolved_path)
+{
+ DWORD ret;
+ wimlib_assert(resolved_path == NULL);
+ DWORD err;
+
+ ret = GetFullPathNameW(path, 0, NULL, NULL);
+ if (!ret) {
+ err = GetLastError();
+ goto fail_win32;
+ }
+
+ resolved_path = TMALLOC(ret);
+ if (!resolved_path)
+ goto out;
+ ret = GetFullPathNameW(path, ret, resolved_path, NULL);
+ if (!ret) {
+ err = GetLastError();
+ free(resolved_path);
+ resolved_path = NULL;
+ goto fail_win32;
+ }
+ goto out;
+fail_win32:
+ win32_error(err);
+ errno = -1;
+out:
+ return resolved_path;
+}
+
+/* rename() on Windows fails if the destination file exists. And we need to
+ * make it work on wide characters. Fix it. */
+int
+win32_rename_replacement(const wchar_t *oldpath, const wchar_t *newpath)
+{
+ if (MoveFileExW(oldpath, newpath, MOVEFILE_REPLACE_EXISTING)) {
+ return 0;
+ } else {
+ /* As usual, the possible error values are not documented */
+ DWORD err = GetLastError();
+ ERROR("MoveFileEx(): Can't rename \"%ls\" to \"%ls\"",
+ oldpath, newpath);
+ win32_error(err);
+ errno = -1;
+ return -1;
+ }
+}
+
+/* Replacement for POSIX fnmatch() (partial functionality only) */
+int
+fnmatch(const wchar_t *pattern, const wchar_t *string, int flags)
+{
+ if (PathMatchSpecW(string, pattern))
+ return 0;
+ else
+ return FNM_NOMATCH;
+}
+
+/* truncate() replacement */
+int
+win32_truncate_replacement(const wchar_t *path, off_t size)
+{
+ DWORD err = NO_ERROR;
+ LARGE_INTEGER liOffset;
+
+ HANDLE h = win32_open_existing_file(path, GENERIC_WRITE);
+ if (h == INVALID_HANDLE_VALUE)
+ goto fail;
+
+ liOffset.QuadPart = size;
+ if (!SetFilePointerEx(h, liOffset, NULL, FILE_BEGIN))
+ goto fail_close_handle;
+
+ if (!SetEndOfFile(h))
+ goto fail_close_handle;
+ CloseHandle(h);
+ return 0;
+
+fail_close_handle:
+ err = GetLastError();
+ CloseHandle(h);
+fail:
+ if (err == NO_ERROR)
+ err = GetLastError();
+ ERROR("Can't truncate \"%ls\" to %"PRIu64" bytes", path, size);
+ win32_error(err);
+ errno = -1;
+ return -1;
+}
+
+
+/* This really could be replaced with _wcserror_s, but this doesn't seem to
+ * actually be available in MSVCRT.DLL on Windows XP (perhaps it's statically
+ * linked in by Visual Studio...?). */
+extern int
+win32_strerror_r_replacement(int errnum, wchar_t *buf, size_t buflen)
+{
+ static pthread_mutex_t strerror_lock = PTHREAD_MUTEX_INITIALIZER;
+
+ pthread_mutex_lock(&strerror_lock);
+ mbstowcs(buf, strerror(errnum), buflen);
+ buf[buflen - 1] = '\0';
+ pthread_mutex_unlock(&strerror_lock);
+ return 0;
+}
+
+#endif /* __WIN32__ */
git://wimlib.net / wimlib / blobdiff