]> wimlib.net Git - wimlib/blobdiff - src/win32_common.c
system compression: try to attach WOF if compression fails
[wimlib] / src / win32_common.c
index f66b33a9ace3ed07601ad89be31c8613a7c5dc5f..3b0d9e842978f04ed354670e31760a0e585c7a85 100644 (file)
@@ -3,7 +3,7 @@
  */
 
 /*
- * Copyright (C) 2013, 2014 Eric Biggers
+ * Copyright (C) 2013, 2014, 2015 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 "config.h"
 #endif
 
-#include <errno.h>
-
 #include "wimlib/win32_common.h"
 
 #include "wimlib/error.h"
 #include "wimlib/util.h"
 
-static int
-win32_error_to_errno(DWORD err_code)
-{
-       /* This mapping is that used in Cygwin.
-        * Some of these choices are arbitrary. */
-       switch (err_code) {
-       case ERROR_ACCESS_DENIED:
-               return EACCES;
-       case ERROR_ACTIVE_CONNECTIONS:
-               return EAGAIN;
-       case ERROR_ALREADY_EXISTS:
-               return EEXIST;
-       case ERROR_BAD_DEVICE:
-               return ENODEV;
-       case ERROR_BAD_EXE_FORMAT:
-               return ENOEXEC;
-       case ERROR_BAD_NETPATH:
-               return ENOENT;
-       case ERROR_BAD_NET_NAME:
-               return ENOENT;
-       case ERROR_BAD_NET_RESP:
-               return ENOSYS;
-       case ERROR_BAD_PATHNAME:
-               return ENOENT;
-       case ERROR_BAD_PIPE:
-               return EINVAL;
-       case ERROR_BAD_UNIT:
-               return ENODEV;
-       case ERROR_BAD_USERNAME:
-               return EINVAL;
-       case ERROR_BEGINNING_OF_MEDIA:
-               return EIO;
-       case ERROR_BROKEN_PIPE:
-               return EPIPE;
-       case ERROR_BUSY:
-               return EBUSY;
-       case ERROR_BUS_RESET:
-               return EIO;
-       case ERROR_CALL_NOT_IMPLEMENTED:
-               return ENOSYS;
-       case ERROR_CANNOT_MAKE:
-               return EPERM;
-       case ERROR_CHILD_NOT_COMPLETE:
-               return EBUSY;
-       case ERROR_COMMITMENT_LIMIT:
-               return EAGAIN;
-       case ERROR_CRC:
-               return EIO;
-       case ERROR_DEVICE_DOOR_OPEN:
-               return EIO;
-       case ERROR_DEVICE_IN_USE:
-               return EAGAIN;
-       case ERROR_DEVICE_REQUIRES_CLEANING:
-               return EIO;
-       case ERROR_DIRECTORY:
-               return ENOTDIR;
-       case ERROR_DIR_NOT_EMPTY:
-               return ENOTEMPTY;
-       case ERROR_DISK_CORRUPT:
-               return EIO;
-       case ERROR_DISK_FULL:
-               return ENOSPC;
-#ifdef ENOTUNIQ
-       case ERROR_DUP_NAME:
-               return ENOTUNIQ;
-#endif
-       case ERROR_EAS_DIDNT_FIT:
-               return ENOSPC;
-#ifdef ENOTSUP
-       case ERROR_EAS_NOT_SUPPORTED:
-               return ENOTSUP;
-#endif
-       case ERROR_EA_LIST_INCONSISTENT:
-               return EINVAL;
-       case ERROR_EA_TABLE_FULL:
-               return ENOSPC;
-       case ERROR_END_OF_MEDIA:
-               return ENOSPC;
-       case ERROR_EOM_OVERFLOW:
-               return EIO;
-       case ERROR_EXE_MACHINE_TYPE_MISMATCH:
-               return ENOEXEC;
-       case ERROR_EXE_MARKED_INVALID:
-               return ENOEXEC;
-       case ERROR_FILEMARK_DETECTED:
-               return EIO;
-       case ERROR_FILENAME_EXCED_RANGE:
-               return ENAMETOOLONG;
-       case ERROR_FILE_CORRUPT:
-               return EEXIST;
-       case ERROR_FILE_EXISTS:
-               return EEXIST;
-       case ERROR_FILE_INVALID:
-               return ENXIO;
-       case ERROR_FILE_NOT_FOUND:
-               return ENOENT;
-       case ERROR_HANDLE_DISK_FULL:
-               return ENOSPC;
-#ifdef ENODATA
-       case ERROR_HANDLE_EOF:
-               return ENODATA;
-#endif
-       case ERROR_INVALID_ADDRESS:
-               return EINVAL;
-       case ERROR_INVALID_AT_INTERRUPT_TIME:
-               return EINTR;
-       case ERROR_INVALID_BLOCK_LENGTH:
-               return EIO;
-       case ERROR_INVALID_DATA:
-               return EINVAL;
-       case ERROR_INVALID_DRIVE:
-               return ENODEV;
-       case ERROR_INVALID_EA_NAME:
-               return EINVAL;
-       case ERROR_INVALID_EXE_SIGNATURE:
-               return ENOEXEC;
-#ifdef EBADRQC
-       case ERROR_INVALID_FUNCTION:
-               return EBADRQC;
-#endif
-       case ERROR_INVALID_HANDLE:
-               return EBADF;
-       case ERROR_INVALID_NAME:
-               return ENOENT;
-       case ERROR_INVALID_PARAMETER:
-               return EINVAL;
-       case ERROR_INVALID_SIGNAL_NUMBER:
-               return EINVAL;
-       case ERROR_IOPL_NOT_ENABLED:
-               return ENOEXEC;
-       case ERROR_IO_DEVICE:
-               return EIO;
-       case ERROR_IO_INCOMPLETE:
-               return EAGAIN;
-       case ERROR_IO_PENDING:
-               return EAGAIN;
-       case ERROR_LOCK_VIOLATION:
-               return EBUSY;
-       case ERROR_MAX_THRDS_REACHED:
-               return EAGAIN;
-       case ERROR_META_EXPANSION_TOO_LONG:
-               return EINVAL;
-       case ERROR_MOD_NOT_FOUND:
-               return ENOENT;
-#ifdef EMSGSIZE
-       case ERROR_MORE_DATA:
-               return EMSGSIZE;
-#endif
-       case ERROR_NEGATIVE_SEEK:
-               return EINVAL;
-       case ERROR_NETNAME_DELETED:
-               return ENOENT;
-       case ERROR_NOACCESS:
-               return EFAULT;
-       case ERROR_NONE_MAPPED:
-               return EINVAL;
-       case ERROR_NONPAGED_SYSTEM_RESOURCES:
-               return EAGAIN;
-#ifdef ENOLINK
-       case ERROR_NOT_CONNECTED:
-               return ENOLINK;
-#endif
-       case ERROR_NOT_ENOUGH_MEMORY:
-               return ENOMEM;
-       case ERROR_NOT_OWNER:
-               return EPERM;
-#ifdef ENOMEDIUM
-       case ERROR_NOT_READY:
-               return ENOMEDIUM;
-#endif
-       case ERROR_NOT_SAME_DEVICE:
-               return EXDEV;
-       case ERROR_NOT_SUPPORTED:
-               return ENOSYS;
-       case ERROR_NO_DATA:
-               return EPIPE;
-       case ERROR_NO_DATA_DETECTED:
-               return EIO;
-#ifdef ENOMEDIUM
-       case ERROR_NO_MEDIA_IN_DRIVE:
-               return ENOMEDIUM;
-#endif
-#ifdef ENMFILE
-       case ERROR_NO_MORE_FILES:
-               return ENMFILE;
-#endif
-#ifdef ENMFILE
-       case ERROR_NO_MORE_ITEMS:
-               return ENMFILE;
-#endif
-       case ERROR_NO_MORE_SEARCH_HANDLES:
-               return ENFILE;
-       case ERROR_NO_PROC_SLOTS:
-               return EAGAIN;
-       case ERROR_NO_SIGNAL_SENT:
-               return EIO;
-       case ERROR_NO_SYSTEM_RESOURCES:
-               return EFBIG;
-       case ERROR_NO_TOKEN:
-               return EINVAL;
-       case ERROR_OPEN_FAILED:
-               return EIO;
-       case ERROR_OPEN_FILES:
-               return EAGAIN;
-       case ERROR_OUTOFMEMORY:
-               return ENOMEM;
-       case ERROR_PAGED_SYSTEM_RESOURCES:
-               return EAGAIN;
-       case ERROR_PAGEFILE_QUOTA:
-               return EAGAIN;
-       case ERROR_PATH_NOT_FOUND:
-               return ENOENT;
-       case ERROR_PIPE_BUSY:
-               return EBUSY;
-       case ERROR_PIPE_CONNECTED:
-               return EBUSY;
-#ifdef ECOMM
-       case ERROR_PIPE_LISTENING:
-               return ECOMM;
-       case ERROR_PIPE_NOT_CONNECTED:
-               return ECOMM;
-#endif
-       case ERROR_POSSIBLE_DEADLOCK:
-               return EDEADLOCK;
-       case ERROR_PRIVILEGE_NOT_HELD:
-               return EPERM;
-       case ERROR_PROCESS_ABORTED:
-               return EFAULT;
-       case ERROR_PROC_NOT_FOUND:
-               return ESRCH;
-#ifdef ENONET
-       case ERROR_REM_NOT_LIST:
-               return ENONET;
-#endif
-       case ERROR_SECTOR_NOT_FOUND:
-               return EINVAL;
-       case ERROR_SEEK:
-               return EINVAL;
-       case ERROR_SETMARK_DETECTED:
-               return EIO;
-       case ERROR_SHARING_BUFFER_EXCEEDED:
-               return ENOLCK;
-       case ERROR_SHARING_VIOLATION:
-               return EBUSY;
-       case ERROR_SIGNAL_PENDING:
-               return EBUSY;
-       case ERROR_SIGNAL_REFUSED:
-               return EIO;
-#ifdef ELIBBAD
-       case ERROR_SXS_CANT_GEN_ACTCTX:
-               return ELIBBAD;
-#endif
-       case ERROR_THREAD_1_INACTIVE:
-               return EINVAL;
-       case ERROR_TOO_MANY_LINKS:
-               return EMLINK;
-       case ERROR_TOO_MANY_OPEN_FILES:
-               return EMFILE;
-       case ERROR_WAIT_NO_CHILDREN:
-               return ECHILD;
-       case ERROR_WORKING_SET_QUOTA:
-               return EAGAIN;
-       case ERROR_WRITE_PROTECT:
-               return EROFS;
-       default:
-               return -1;
-       }
-}
-
-void
-set_errno_from_win32_error(DWORD err)
-{
-       errno = win32_error_to_errno(err);
-}
-
-void
-set_errno_from_GetLastError(void)
-{
-       set_errno_from_win32_error(GetLastError());
-}
-
-void
-set_errno_from_nt_status(NTSTATUS status)
-{
-       set_errno_from_win32_error((*func_RtlNtStatusToDosError)(status));
-}
-
 static bool
 win32_modify_privilege(const wchar_t *privilege, bool enable)
 {
@@ -351,16 +62,21 @@ out:
 static bool
 win32_modify_capture_privileges(bool enable)
 {
-       return win32_modify_privilege(SE_BACKUP_NAME, enable)
-           && win32_modify_privilege(SE_SECURITY_NAME, enable);
+       bool ok = true;
+       ok &= win32_modify_privilege(SE_BACKUP_NAME, enable);
+       ok &= win32_modify_privilege(SE_SECURITY_NAME, enable);
+       return ok;
 }
 
 static bool
 win32_modify_apply_privileges(bool enable)
 {
-       return win32_modify_privilege(SE_RESTORE_NAME, enable)
-           && win32_modify_privilege(SE_SECURITY_NAME, enable)
-           && win32_modify_privilege(SE_TAKE_OWNERSHIP_NAME, enable);
+       bool ok = true;
+       ok &= win32_modify_privilege(SE_RESTORE_NAME, enable);
+       ok &= win32_modify_privilege(SE_SECURITY_NAME, enable);
+       ok &= win32_modify_privilege(SE_TAKE_OWNERSHIP_NAME, enable);
+       ok &= win32_modify_privilege(SE_MANAGE_VOLUME_NAME, enable);
+       return ok;
 }
 
 static void
@@ -639,8 +355,7 @@ win32_path_to_nt_path(const wchar_t *win32_path, UNICODE_STRING *nt_path)
        if (status == STATUS_NO_MEMORY)
                return WIMLIB_ERR_NOMEM;
 
-       ERROR("\"%ls\": invalid path name (status=0x%08"PRIx32")",
-             win32_path, (u32)status);
+       winnt_error(status, L"\"%ls\": invalid path name", win32_path);
        return WIMLIB_ERR_INVALID_PARAM;
 }
 
@@ -664,5 +379,148 @@ win32_get_drive_path(const wchar_t *file_path, wchar_t drive_path[7])
        return 0;
 }
 
+/* Try to attach an instance of the Windows Overlay File System Filter Driver to
+ * the specified drive (such as C:)  */
+bool
+win32_try_to_attach_wof(const wchar_t *drive)
+{
+       HMODULE fltlib;
+       bool retval = false;
+
+       /* Use FilterAttach() from Fltlib.dll.  */
+
+       fltlib = LoadLibrary(L"Fltlib.dll");
+
+       if (!fltlib) {
+               WARNING("Failed to load Fltlib.dll");
+               return retval;
+       }
+
+       HRESULT (WINAPI *func_FilterAttach)(LPCWSTR lpFilterName,
+                                           LPCWSTR lpVolumeName,
+                                           LPCWSTR lpInstanceName,
+                                           DWORD dwCreatedInstanceNameLength,
+                                           LPWSTR lpCreatedInstanceName);
+
+       func_FilterAttach = (void *)GetProcAddress(fltlib, "FilterAttach");
+
+       if (func_FilterAttach) {
+               HRESULT res;
+
+               res = (*func_FilterAttach)(L"WoF", drive, NULL, 0, NULL);
+
+               if (res == S_OK)
+                       retval = true;
+       } else {
+               WARNING("FilterAttach() does not exist in Fltlib.dll");
+       }
+
+       FreeLibrary(fltlib);
+
+       return retval;
+}
+
+
+static void
+windows_msg(u32 code, const wchar_t *format, va_list va,
+           bool is_ntstatus, bool is_error)
+{
+       wchar_t _buf[STACK_MAX / 8];
+       wchar_t *buf = _buf;
+       size_t buflen = ARRAY_LEN(_buf);
+       size_t ret;
+       size_t n;
+
+retry:
+       n = vsnwprintf(buf, buflen, format, va);
+
+       if (n >= buflen)
+               goto realloc;
+
+       n += snwprintf(&buf[n], buflen - n,
+                      (is_ntstatus ?
+                       L" (status=%08"PRIx32"): " :
+                       L" (err=%"PRIu32"): "),
+                      code);
+
+       if (n >= buflen)
+               goto realloc;
+
+       ret = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
+                           NULL,
+                           is_ntstatus ? (*func_RtlNtStatusToDosError)(code) : code,
+                           MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
+                           &buf[n],
+                           buflen - n,
+                           NULL);
+       n += ret;
+
+       if (n >= buflen || (ret == 0 && GetLastError() == ERROR_INSUFFICIENT_BUFFER))
+               goto realloc;
+
+        if (buf[n - 1] == L'\n')
+               buf[--n] = L'\0';
+        if (buf[n - 1] == L'\r')
+               buf[--n] = L'\0';
+        if (buf[n - 1] == L'.')
+               buf[--n] = L'\0';
+
+       if (is_error)
+               ERROR("%ls", buf);
+       else
+               WARNING("%ls", buf);
+       if (buf != _buf)
+               FREE(buf);
+       return;
+
+realloc:
+       if (buf != _buf)
+               FREE(buf);
+       buflen *= 2;
+       buf = MALLOC(buflen * sizeof(buf[0]));
+       if (buf)
+               goto retry;
+       ERROR("Ran out of memory while building error message!!!");
+}
+
+void
+win32_warning(DWORD err, const wchar_t *format, ...)
+{
+       va_list va;
+
+       va_start(va, format);
+       windows_msg(err, format, va, false, false);
+       va_end(va);
+}
+
+void
+win32_error(DWORD err, const wchar_t *format, ...)
+{
+       va_list va;
+
+       va_start(va, format);
+       windows_msg(err, format, va, false, true);
+       va_end(va);
+}
+
+void
+winnt_warning(NTSTATUS status, const wchar_t *format, ...)
+{
+       va_list va;
+
+       va_start(va, format);
+       windows_msg(status, format, va, true, false);
+       va_end(va);
+}
+
+void
+winnt_error(NTSTATUS status, const wchar_t *format, ...)
+{
+       va_list va;
+
+       va_start(va, format);
+       windows_msg(status, format, va, true, true);
+       va_end(va);
+}
 
 #endif /* __WIN32__ */