* autoload.cc (NtQueryVolumeInformationFile): Add.

* fhandler.cc (fhandler_base::raw_write): Don't touch has_changed flag.
	* fhandler.h (enum change_state): Remove.
	(fhandler_base::status): Revert has_changed to a simple bit.
	(fhandler_base::fstat_helper): Add nAllocSize parameter.  Rename
	ftCreationTime to ftChangeTime.
	* fhandler_disk_file.cc:
	Call fstat_helper with additional
	allocation size throughout.
	(fhandler_base::fstat_by_handle): Use NT native functions to get
	full file information on NT.  Call fstat_helper with LastWriteTime
	as ctime, if ChangeTime is not available.
	(fhandler_base::fstat_by_name): Call fstat_helper with LastWriteTime
	as ctime.
	(fhandler_base::fstat_helper): Add comment. Drop special FAT
	handling since it's useless. Use nAllocSize for st_blocks if available.
	(fhandler_disk_file::touch_ctime): Only touch LastWriteTime.
	(fhandler_disk_file::fchmod): Set has_changed on 9x only.
	(fhandler_disk_file::fchown): Don't set has_changed.
	(fhandler_disk_file::facl): Ditto.
	(fhandler_disk_file::ftruncate): Ditto.
	(fhandler_disk_file::link): Set has_changed on 9x only and on original
	file only.
	(fhandler_base::open_fs): Don't set has_changed in O_TRUNC case.
	* ntdll.h (FILE_BASIC_INFORMATION): Define.
	(FILE_STANDARD_INFORMATION): Define.
	(FILE_INTERNAL_INFORMATION): Define.
	(FILE_EA_INFORMATION): Define.
	(FILE_ACCESS_INFORMATION): Define.
	(FILE_POSITION_INFORMATION): Define.
	(FILE_MODE_INFORMATION): Define.
	(FILE_ALIGNMENT_INFORMATION): Define.
	(FILE_NAME_INFORMATION): Don't define with arbitrary FileName size.
	(FILE_ALL_INFORMATION): Define.
	(FILE_INFORMATION_CLASS): Add FileAllInformation.
	(FILE_FS_VOLUME_INFORMATION): Define.
	(FS_INFORMATION_CLASS): Define.
	(NtQueryVolumeInformationFile): Define.

winsup/cygwin/ntdll.h

@@ -354,11 +354,62 @@ typedef struct _MEMORY_WORKING_SET_LIST
   ULONG WorkingSetList[1];
 } MEMORY_WORKING_SET_LIST, *PMEMORY_WORKING_SET_LIST;
 
-typedef struct _FILE_NAME_INFORMATION
-{
-  DWORD FileNameLength;
-  WCHAR FileName[MAX_PATH + 100];
-} FILE_NAME_INFORMATION;
+typedef struct _FILE_BASIC_INFORMATION {
+  LARGE_INTEGER CreationTime;
+  LARGE_INTEGER LastAccessTime;
+  LARGE_INTEGER LastWriteTime;
+  LARGE_INTEGER ChangeTime;
+  ULONG FileAttributes;
+} FILE_BASIC_INFORMATION, *PFILE_BASIC_INFORMATION;
+
+typedef struct _FILE_STANDARD_INFORMATION {
+  LARGE_INTEGER AllocationSize;
+  LARGE_INTEGER EndOfFile;
+  ULONG NumberOfLinks;
+  BOOLEAN DeletePending;
+  BOOLEAN Directory;
+} FILE_STANDARD_INFORMATION, *PFILE_STANDARD_INFORMATION;
+
+typedef struct _FILE_INTERNAL_INFORMATION {
+  LARGE_INTEGER IndexNumber;
+} FILE_INTERNAL_INFORMATION, *PFILE_INTERNAL_INFORMATION;
+
+typedef struct _FILE_EA_INFORMATION {
+  ULONG EaSize;
+} FILE_EA_INFORMATION, *PFILE_EA_INFORMATION;
+
+typedef struct _FILE_ACCESS_INFORMATION {
+  ACCESS_MASK AccessFlags;
+} FILE_ACCESS_INFORMATION, *PFILE_ACCESS_INFORMATION;
+
+typedef struct _FILE_POSITION_INFORMATION {                 
+  LARGE_INTEGER CurrentByteOffset;                        
+} FILE_POSITION_INFORMATION, *PFILE_POSITION_INFORMATION;   
+
+typedef struct _FILE_MODE_INFORMATION {
+  ULONG Mode;
+} FILE_MODE_INFORMATION, *PFILE_MODE_INFORMATION;
+
+typedef struct _FILE_ALIGNMENT_INFORMATION {
+  ULONG AlignmentRequirement;
+} FILE_ALIGNMENT_INFORMATION;
+
+typedef struct _FILE_NAME_INFORMATION {                     
+  ULONG FileNameLength;                                   
+  WCHAR FileName[1];                                      
+} FILE_NAME_INFORMATION, *PFILE_NAME_INFORMATION;           
+
+typedef struct _FILE_ALL_INFORMATION {
+  FILE_BASIC_INFORMATION     BasicInformation;
+  FILE_STANDARD_INFORMATION  StandardInformation;
+  FILE_INTERNAL_INFORMATION  InternalInformation;
+  FILE_EA_INFORMATION        EaInformation;
+  FILE_ACCESS_INFORMATION    AccessInformation;
+  FILE_POSITION_INFORMATION  PositionInformation;
+  FILE_MODE_INFORMATION      ModeInformation;
+  FILE_ALIGNMENT_INFORMATION AlignmentInformation;
+  FILE_NAME_INFORMATION      NameInformation;
+} FILE_ALL_INFORMATION, *PFILE_ALL_INFORMATION;
 
 typedef struct _FILE_PIPE_LOCAL_INFORMATION
 {
@@ -385,10 +436,25 @@ typedef struct _FILE_COMPRESSION_INFORMATION
 
 typedef enum _FILE_INFORMATION_CLASS
 {
+  FileAllInformation = 18,
   FilePipeLocalInformation = 24,
   FileCompressionInformation = 28
 } FILE_INFORMATION_CLASS, *PFILE_INFORMATION_CLASS;
 
+typedef struct _FILE_FS_VOLUME_INFORMATION
+{
+  LARGE_INTEGER VolumeCreationTime;
+  ULONG VolumeSerialNumber;
+  ULONG VolumeLabelLength;
+  BOOLEAN SupportsObjects;
+  WCHAR VolumeLabel[1];
+} FILE_FS_VOLUME_INFORMATION, *PFILE_FS_VOLUME_INFORMATION;
+
+typedef enum _FSINFOCLASS
+{
+  FileFsVolumeInformation = 1
+} FS_INFORMATION_CLASS, *PFS_INFORMATION_CLASS;
+
 typedef enum _OBJECT_INFORMATION_CLASS
 {
   ObjectBasicInformation = 0,
@@ -420,7 +486,7 @@ extern "C"
   NTSTATUS NTAPI NtOpenFile (PHANDLE, ACCESS_MASK, POBJECT_ATTRIBUTES,
 			     PIO_STATUS_BLOCK, ULONG, ULONG);
   NTSTATUS NTAPI NtOpenSection (PHANDLE, ACCESS_MASK, POBJECT_ATTRIBUTES);
-  NTSTATUS NTAPI NtQueryInformationFile (HANDLE, IO_STATUS_BLOCK *, VOID *,
+  NTSTATUS NTAPI NtQueryInformationFile (HANDLE, PIO_STATUS_BLOCK, PVOID,
 					 ULONG, FILE_INFORMATION_CLASS);
   NTSTATUS NTAPI NtQueryInformationProcess (HANDLE, PROCESSINFOCLASS,
 					    PVOID, ULONG, PULONG);
@@ -432,6 +498,9 @@ extern "C"
   					PSECURITY_DESCRIPTOR, ULONG, PULONG);
   NTSTATUS NTAPI NtQueryVirtualMemory (HANDLE, PVOID, MEMORY_INFORMATION_CLASS,
 				       PVOID, ULONG, PULONG);
+  NTSTATUS NTAPI NtQueryVolumeInformationFile (HANDLE, IO_STATUS_BLOCK *,
+					       VOID *, ULONG,
+					       FS_INFORMATION_CLASS);
   NTSTATUS NTAPI NtSetSecurityObject (HANDLE, SECURITY_INFORMATION,
 				      PSECURITY_DESCRIPTOR);
   NTSTATUS NTAPI NtUnmapViewOfSection (HANDLE, PVOID);