diff options
Diffstat (limited to 'private/net/svcdlls/repl/common/fsresolu.c')
| -rw-r--r-- | private/net/svcdlls/repl/common/fsresolu.c | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/private/net/svcdlls/repl/common/fsresolu.c b/private/net/svcdlls/repl/common/fsresolu.c new file mode 100644 index 000000000..092bf946f --- /dev/null +++ b/private/net/svcdlls/repl/common/fsresolu.c @@ -0,0 +1,220 @@ +/*++ + +Copyright (c) 1992-1993 Microsoft Corporation + +Module Name: + + FsResolu.c + +Abstract: + + Module only contains ReplGetFsTimeResolutionSecs(). + +Author: + + JR (John Rogers, JohnRo@Microsoft) + +Environment: + + User mode only. + Contains NT-specific code. + Requires ANSI C extensions: slash-slash comments, long external names. + +Revision History: + + 17-Dec-1992 JohnRo + Created for RAID 1513: Repl does not maintain ACLs. (Also fix + HPFS->FAT timestamp.) + 26-Feb-1993 JohnRo + RAID 13126: Fix repl memory leak. + +--*/ + +// These must be included first: + +#include <nt.h> // NtOpenFile(), ULONG, etc. +#include <ntrtl.h> // PLARGE_INTEGER, TIME_FIELDS, etc. +#include <nturtl.h> // Needed for ntrtl.h and windows.h to co-exist. + +#include <windows.h> // GetLastError(), etc. +#include <lmcons.h> + +// These may be included in any order: + +#include <netdebug.h> // DBGSTATIC, NetpKdPrint(), FORMAT_ equates, etc. +#include <netlib.h> // NetpMemoryAllocate(), etc. +#include <prefix.h> // PREFIX_ equates. +#include <repldefs.h> // My prototype, UNKNOWN_FS_RESOLUTION, etc. +#include <tstring.h> // NetpNCopyWStrToTStr(). +#include <winerror.h> // NO_ERROR. + + +DWORD +ReplGetFsTimeResolutionSecs( + IN LPCTSTR AbsPath + ) +{ + NET_API_STATUS ApiStatus; + DWORD ResolutionSecs = UNKNOWN_FS_RESOLUTION; + HANDLE FileHandle = NULL; + IO_STATUS_BLOCK IoStatusBlock; + NTSTATUS NtStatus; + OBJECT_ATTRIBUTES ObjectAttributes; + + const ULONG OpenOptions = + FILE_SYNCHRONOUS_IO_NONALERT +#if 0 + | ( IsDirectory ? FILE_DIRECTORY_FILE : 0 ) +#endif + ; + + TCHAR FsName[MAXIMUM_FILENAME_LENGTH+1]; + DWORD FsNameLen; // char count in FsName, w/o nul char. + BOOL PathAllocated = FALSE; + UNICODE_STRING UnicodePath; + PFILE_FS_ATTRIBUTE_INFORMATION VolumeInfo = NULL; + ULONG VolumeInfoSize; + + NetpAssert( AbsPath != NULL ); + ApiStatus = ReplCheckAbsPathSyntax( (LPTSTR) AbsPath ); + NetpAssert( ApiStatus == NO_ERROR ); + + RtlInitUnicodeString( + & UnicodePath, // output: struct + AbsPath ); // input: null terminated + + if( !RtlDosPathNameToNtPathName_U( + AbsPath, + &UnicodePath, + NULL, + NULL) ) { + + NetpKdPrint(( PREFIX_REPL_CLIENT + "ReplGetFsTimeResolutionSecs: RtlDosPathNameToNtPathname_U" + " of source '" FORMAT_LPTSTR "' failed.\n", AbsPath )); + + // BUGBUG: log error + goto Cleanup; + } + PathAllocated = TRUE; + + InitializeObjectAttributes( + &ObjectAttributes, + (LPVOID) &UnicodePath, + OBJ_CASE_INSENSITIVE, + NULL, + NULL ); + NtStatus = NtOpenFile( + & FileHandle, + SYNCHRONIZE | // desired ... + FILE_READ_ATTRIBUTES, // ... access + &ObjectAttributes, + &IoStatusBlock, + FILE_SHARE_READ, // share access + OpenOptions ); + + if ( !NT_SUCCESS( NtStatus ) ) { + + NetpKdPrint(( PREFIX_REPL_CLIENT + "ReplGetFsTimeResolutionSecs: NtOpenFile of source '" + FORMAT_LPTSTR "' gave NT status " FORMAT_NTSTATUS ".\n", + AbsPath, NtStatus )); + + // BUGBUG: log error + goto Cleanup; + } + + // + // Alloc space for volume fs attr info (including various strings + // after the structure). + // + VolumeInfoSize = + sizeof(FILE_FS_ATTRIBUTE_INFORMATION) + + ( (MAXIMUM_FILENAME_LENGTH+1) * sizeof(WCHAR) ); + VolumeInfo = NetpMemoryAllocate( VolumeInfoSize ); + if (VolumeInfo == NULL) { + // BUGBUG: log the error! + goto Cleanup; + } + + NtStatus = NtQueryVolumeInformationFile( + FileHandle, + &IoStatusBlock, + (PVOID) VolumeInfo, + VolumeInfoSize, + FileFsAttributeInformation ); // FS info class + + if ( !NT_SUCCESS( NtStatus ) ) { + + NetpKdPrint(( PREFIX_REPL_CLIENT + "ReplGetFsTimeResolutionSecs: NtQueryVolumeInformationFile " + "FAILED, NT status is " FORMAT_NTSTATUS ".\n", + NtStatus )); + + // BUGBUG: log error + goto Cleanup; + } + + IF_DEBUG( REPL ) { + NetpKdPrint(( PREFIX_REPL + "ReplGetFsTimeResolutionSecs: got volume info, " + "name len is " FORMAT_DWORD ", name[0] is " FORMAT_WCHAR ".\n", + (DWORD) (VolumeInfo->FileSystemNameLength), + VolumeInfo->FileSystemName[0] )); + } + NetpAssert( ((VolumeInfo->FileSystemNameLength) % sizeof(WCHAR)) == 0 ); + + FsNameLen = (VolumeInfo->FileSystemNameLength) / sizeof(WCHAR); + // len w/o nul + + ApiStatus = NetpNCopyWStrToTStr( + FsName, // dest + VolumeInfo->FileSystemName, // src + FsNameLen); // chars + NetpAssert( ApiStatus == NO_ERROR ); + FsName[ FsNameLen ] = L'\0'; + + IF_DEBUG( REPL ) { + NetpKdPrint(( PREFIX_REPL + "ReplGetFsTimeResolutionSecs: got fs name '" FORMAT_LPTSTR + "'.\n", FsName )); + } + + // + // Compute ResolutionSecs using known file system names. + // + if (STRICMP( FsName, (LPTSTR) TEXT("FAT") ) == 0) { + ResolutionSecs = 2; + goto Cleanup; + } + if (STRICMP( FsName, (LPTSTR) TEXT("HPFS") ) == 0) { + ResolutionSecs = 1; + goto Cleanup; + } + if (STRICMP( FsName, (LPTSTR) TEXT("NTFS") ) == 0) { + ResolutionSecs = 1; + goto Cleanup; + } + + NetpKdPrint(( PREFIX_REPL + "ReplGetFsTimeResolutionSecs: UNKNOWN fs name of '" + "'.\n", FsName )); + // BUGBUG: log this error! + ResolutionSecs = UNKNOWN_FS_RESOLUTION; + +Cleanup: + + if (FileHandle != NULL) { + (VOID) NtClose( FileHandle ); + } + + if (VolumeInfo != NULL) { + NetpMemoryFree( VolumeInfo ); + } + + if (PathAllocated) { + (VOID) RtlFreeHeap( RtlProcessHeap(), 0, UnicodePath.Buffer ); + } + + return (ResolutionSecs); +} |