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Diffstat (limited to '')
| -rw-r--r-- | src/VBox/Runtime/r3/nt/RTPathQueryInfo-nt.cpp | 669 |
1 files changed, 669 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r3/nt/RTPathQueryInfo-nt.cpp b/src/VBox/Runtime/r3/nt/RTPathQueryInfo-nt.cpp new file mode 100644 index 00000000..68c49711 --- /dev/null +++ b/src/VBox/Runtime/r3/nt/RTPathQueryInfo-nt.cpp @@ -0,0 +1,669 @@ +/* $Id: RTPathQueryInfo-nt.cpp $ */ +/** @file + * IPRT - RTPathQueryInfo[Ex], Native NT. + */ + +/* + * Copyright (C) 2006-2019 Oracle Corporation + * + * This file is part of VirtualBox Open Source Edition (OSE), as + * available from http://www.virtualbox.org. This file is free software; + * you can redistribute it and/or modify it under the terms of the GNU + * General Public License (GPL) as published by the Free Software + * Foundation, in version 2 as it comes in the "COPYING" file of the + * VirtualBox OSE distribution. VirtualBox OSE is distributed in the + * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL) only, as it comes in the "COPYING.CDDL" file of the + * VirtualBox OSE distribution, in which case the provisions of the + * CDDL are applicable instead of those of the GPL. + * + * You may elect to license modified versions of this file under the + * terms and conditions of either the GPL or the CDDL or both. + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#define LOG_GROUP RTLOGGROUP_FILE +#include "internal-r3-nt.h" + +#include <iprt/path.h> +#include <iprt/err.h> +#include <iprt/time.h> +#include "internal/fs.h" +#include "internal/path.h" + + +/********************************************************************************************************************************* +* Defined Constants And Macros * +*********************************************************************************************************************************/ +/** Helper for comparing a UNICODE_STRING with a string litteral. */ +#define ARE_UNICODE_STRINGS_EQUAL(a_UniStr, a_wszType) \ + ( (a_UniStr)->Length == sizeof(a_wszType) - sizeof(RTUTF16) \ + && memcmp((a_UniStr)->Buffer, a_wszType, sizeof(a_wszType) - sizeof(RTUTF16)) == 0) + + +/********************************************************************************************************************************* +* Global Variables * +*********************************************************************************************************************************/ +extern decltype(NtQueryFullAttributesFile) *g_pfnNtQueryFullAttributesFile; /* init-win.cpp */ + + +/* ASSUMES FileID comes after ShortName and the structs are identical up to that point. */ +AssertCompileMembersSameSizeAndOffset(FILE_BOTH_DIR_INFORMATION, NextEntryOffset, FILE_ID_BOTH_DIR_INFORMATION, NextEntryOffset); +AssertCompileMembersSameSizeAndOffset(FILE_BOTH_DIR_INFORMATION, FileIndex , FILE_ID_BOTH_DIR_INFORMATION, FileIndex ); +AssertCompileMembersSameSizeAndOffset(FILE_BOTH_DIR_INFORMATION, CreationTime , FILE_ID_BOTH_DIR_INFORMATION, CreationTime ); +AssertCompileMembersSameSizeAndOffset(FILE_BOTH_DIR_INFORMATION, LastAccessTime , FILE_ID_BOTH_DIR_INFORMATION, LastAccessTime ); +AssertCompileMembersSameSizeAndOffset(FILE_BOTH_DIR_INFORMATION, LastWriteTime , FILE_ID_BOTH_DIR_INFORMATION, LastWriteTime ); +AssertCompileMembersSameSizeAndOffset(FILE_BOTH_DIR_INFORMATION, ChangeTime , FILE_ID_BOTH_DIR_INFORMATION, ChangeTime ); +AssertCompileMembersSameSizeAndOffset(FILE_BOTH_DIR_INFORMATION, EndOfFile , FILE_ID_BOTH_DIR_INFORMATION, EndOfFile ); +AssertCompileMembersSameSizeAndOffset(FILE_BOTH_DIR_INFORMATION, AllocationSize , FILE_ID_BOTH_DIR_INFORMATION, AllocationSize ); +AssertCompileMembersSameSizeAndOffset(FILE_BOTH_DIR_INFORMATION, FileAttributes , FILE_ID_BOTH_DIR_INFORMATION, FileAttributes ); +AssertCompileMembersSameSizeAndOffset(FILE_BOTH_DIR_INFORMATION, FileNameLength , FILE_ID_BOTH_DIR_INFORMATION, FileNameLength ); +AssertCompileMembersSameSizeAndOffset(FILE_BOTH_DIR_INFORMATION, EaSize , FILE_ID_BOTH_DIR_INFORMATION, EaSize ); +AssertCompileMembersSameSizeAndOffset(FILE_BOTH_DIR_INFORMATION, ShortNameLength, FILE_ID_BOTH_DIR_INFORMATION, ShortNameLength); +AssertCompileMembersSameSizeAndOffset(FILE_BOTH_DIR_INFORMATION, ShortName , FILE_ID_BOTH_DIR_INFORMATION, ShortName ); + + + +/** + * Splits up an NT path into directory and filename. + * + * @param pNtName The path to split. + * @param pNtParent Where to return the directory path. + * @param pNtFilename Where to return the filename part. + * @param fNoParentDirSlash Whether to make sure the directory path doesn't + * end with a slash (except root). + */ +static void ntPathNtSplitName(UNICODE_STRING const *pNtName, UNICODE_STRING *pNtParent, UNICODE_STRING *pNtFilename, + bool fNoParentDirSlash) +{ + PRTUTF16 pwszBuffer = pNtName->Buffer; + size_t off = pNtName->Length / sizeof(RTUTF16); + + /* Skip trailing slash if present. */ + if ( off > 0 + && pwszBuffer[off - 1] == '\\') + off--; + + /* Find the slash before that. */ + RTUTF16 wc; + while ( off > 0 + && (wc = pwszBuffer[off - 1]) != '\\' + && wc != '/') + off--; + if (off != 0) + { + pNtParent->Buffer = pwszBuffer; + pNtParent->MaximumLength = pNtParent->Length = (USHORT)(off * sizeof(RTUTF16)); + } + else + { + AssertFailed(); /* This is impossible and won't work (NT doesn't know '.' or '..'). */ + /** @todo query the whole path as it is possible relative. Use the buffer for + * temporary name storage. */ + pNtParent->Buffer = L"."; + pNtParent->Length = 1 * sizeof(RTUTF16); + pNtParent->MaximumLength = 2 * sizeof(RTUTF16); + } + + pNtFilename->Buffer = &pwszBuffer[off]; + pNtFilename->Length = pNtName->Length - (USHORT)(off * sizeof(RTUTF16)); + pNtFilename->MaximumLength = pNtName->MaximumLength - (USHORT)(off * sizeof(RTUTF16)); + + while ( fNoParentDirSlash + && pNtParent->Length > sizeof(RTUTF16) + && pNtParent->Buffer[pNtParent->Length / sizeof(RTUTF16) - 1] == '\\') + pNtParent->Length -= sizeof(RTUTF16); +} + + +/** + * Deals with enmAddAttr != RTFSOBJATTRADD_UNIX. + * + * @returns IPRT status code (usually @a rc). + * @param rc The return code. + * @param pObjInfo The info to complete. + * @param enmAddAttr What to complete it with. Caller should fill in + * RTFSOBJATTRADD_UNIX. + */ +static int rtPathNtQueryInfoFillInDummyData(int rc, PRTFSOBJINFO pObjInfo, RTFSOBJATTRADD enmAddAttr) +{ + switch (enmAddAttr) + { + case RTFSOBJATTRADD_UNIX: + pObjInfo->Attr.enmAdditional = RTFSOBJATTRADD_UNIX; + break; + + case RTFSOBJATTRADD_NOTHING: + pObjInfo->Attr.enmAdditional = RTFSOBJATTRADD_NOTHING; + break; + + case RTFSOBJATTRADD_UNIX_OWNER: + pObjInfo->Attr.enmAdditional = RTFSOBJATTRADD_UNIX_OWNER; + pObjInfo->Attr.u.UnixOwner.uid = NIL_RTUID; + pObjInfo->Attr.u.UnixOwner.szName[0] = '\0'; /** @todo return something sensible here. */ + break; + + case RTFSOBJATTRADD_UNIX_GROUP: + pObjInfo->Attr.enmAdditional = RTFSOBJATTRADD_UNIX_GROUP; + pObjInfo->Attr.u.UnixGroup.gid = NIL_RTGID; + pObjInfo->Attr.u.UnixGroup.szName[0] = '\0'; + break; + + case RTFSOBJATTRADD_EASIZE: + pObjInfo->Attr.enmAdditional = RTFSOBJATTRADD_EASIZE; + pObjInfo->Attr.u.EASize.cb = 0; + break; + + default: + AssertMsgFailed(("Impossible!\n")); + rc = VERR_INTERNAL_ERROR; + } + return rc; +} + + +/** + * Deal with getting info about something that could be in a directory object. + * + * @returns IPRT status code + * @param pObjAttr The NT object attribute. + * @param pObjInfo Where to return the info. + * @param enmAddAttr Which extra attributes to get (/fake). + * @param fFlags The flags. + * @param pvBuf Query buffer space. + * @param cbBuf Size of the buffer. ASSUMES lots of space. + * @param rcNtCaller The status code that got us here. + */ +static int rtPathNtQueryInfoInDirectoryObject(OBJECT_ATTRIBUTES *pObjAttr, PRTFSOBJINFO pObjInfo, + RTFSOBJATTRADD enmAddAttr, uint32_t fFlags, + void *pvBuf, size_t cbBuf, NTSTATUS rcNtCaller) +{ + RT_NOREF(fFlags); + + /* + * Special case: Root dir. + */ + if ( pObjAttr->RootDirectory == NULL + && pObjAttr->ObjectName->Length == sizeof(RTUTF16) + && pObjAttr->ObjectName->Buffer[0] == '\\') + { + pObjInfo->cbObject = 0; + pObjInfo->cbAllocated = 0; + RTTimeSpecSetNtTime(&pObjInfo->BirthTime, 0); + RTTimeSpecSetNtTime(&pObjInfo->AccessTime, 0); + RTTimeSpecSetNtTime(&pObjInfo->ModificationTime, 0); + RTTimeSpecSetNtTime(&pObjInfo->ChangeTime, 0); + pObjInfo->Attr.fMode = RTFS_DOS_DIRECTORY | RTFS_TYPE_DIRECTORY | 0777; + return rtPathNtQueryInfoFillInDummyData(VINF_SUCCESS, pObjInfo, enmAddAttr); + } + + /* + * We must open and scan the parent directory object. + */ + UNICODE_STRING NtDirName; + UNICODE_STRING NtDirEntry; + ntPathNtSplitName(pObjAttr->ObjectName, &NtDirName, &NtDirEntry, true /*fNoParentDirSlash*/); + + while ( NtDirEntry.Length > sizeof(RTUTF16) + && NtDirEntry.Buffer[NtDirEntry.Length / sizeof(RTUTF16) - 1] == '\\') + NtDirEntry.Length -= sizeof(RTUTF16); + + pObjAttr->ObjectName = &NtDirName; + HANDLE hDir = RTNT_INVALID_HANDLE_VALUE; + NTSTATUS rcNt = NtOpenDirectoryObject(&hDir, DIRECTORY_QUERY | DIRECTORY_TRAVERSE, pObjAttr); + if (NT_SUCCESS(rcNt)) + { + ULONG uObjDirCtx = 0; + for (;;) + { + ULONG cbReturned = 0; + rcNt = NtQueryDirectoryObject(hDir, + pvBuf, + (ULONG)cbBuf, + FALSE /*ReturnSingleEntry */, + FALSE /*RestartScan*/, + &uObjDirCtx, + &cbReturned); + if (!NT_SUCCESS(rcNt)) + break; + + for (POBJECT_DIRECTORY_INFORMATION pObjDir = (POBJECT_DIRECTORY_INFORMATION)pvBuf; + pObjDir->Name.Length != 0; + pObjDir++) + { + if ( pObjDir->Name.Length == NtDirEntry.Length + && memcmp(pObjDir->Name.Buffer, NtDirEntry.Buffer, NtDirEntry.Length) == 0) + { + /* + * Find it. Fill in the info we've got and return (see similar code in direnum-r3-nt.cpp). + */ + NtClose(hDir); + + pObjInfo->cbObject = 0; + pObjInfo->cbAllocated = 0; + RTTimeSpecSetNtTime(&pObjInfo->BirthTime, 0); + RTTimeSpecSetNtTime(&pObjInfo->AccessTime, 0); + RTTimeSpecSetNtTime(&pObjInfo->ModificationTime, 0); + RTTimeSpecSetNtTime(&pObjInfo->ChangeTime, 0); + + if (ARE_UNICODE_STRINGS_EQUAL(&pObjDir->TypeName, L"Directory")) + pObjInfo->Attr.fMode = RTFS_DOS_DIRECTORY | RTFS_TYPE_DIRECTORY | 0777; + else if (ARE_UNICODE_STRINGS_EQUAL(&pObjDir->TypeName, L"SymbolicLink")) + pObjInfo->Attr.fMode = RTFS_DOS_NT_REPARSE_POINT | RTFS_TYPE_SYMLINK | 0777; + else if (ARE_UNICODE_STRINGS_EQUAL(&pObjDir->TypeName, L"Device")) + pObjInfo->Attr.fMode = RTFS_DOS_NT_DEVICE | RTFS_TYPE_DEV_CHAR | 0666; + else + pObjInfo->Attr.fMode = RTFS_DOS_NT_NORMAL | RTFS_TYPE_FILE | 0666; + + pObjInfo->Attr.enmAdditional = enmAddAttr; + return rtPathNtQueryInfoFillInDummyData(VINF_SUCCESS, pObjInfo, enmAddAttr); + } + } + } + + NtClose(hDir); + if (rcNt == STATUS_NO_MORE_FILES || rcNt == STATUS_NO_MORE_ENTRIES || rcNt == STATUS_NO_SUCH_FILE) + return VERR_FILE_NOT_FOUND; + } + else + return RTErrConvertFromNtStatus(rcNtCaller); + return RTErrConvertFromNtStatus(rcNt); +} + + +/** + * Queries information from a file or directory handle. + * + * This is shared between the RTPathQueryInfo, RTFileQueryInfo and + * RTDirQueryInfo code. + * + * @returns IPRT status code. + * @param hFile The handle to query information from. Must have + * the necessary privileges. + * @param pvBuf Pointer to a scratch buffer. + * @param cbBuf The size of the buffer. This must be large + * enough to hold a FILE_ALL_INFORMATION struct. + * @param pObjInfo Where to return information about the handle. + * @param enmAddAttr What extra info to return. + * @param pszPath The path if this is a file (for exe detect). + * @param uReparseTag The reparse tag number (0 if not applicable) for + * symlink detection/whatnot. + */ +DECLHIDDEN(int) rtPathNtQueryInfoFromHandle(HANDLE hFile, void *pvBuf, size_t cbBuf, PRTFSOBJINFO pObjInfo, + RTFSOBJATTRADD enmAddAttr, const char *pszPath, ULONG uReparseTag) +{ + Assert(cbBuf >= sizeof(FILE_ALL_INFORMATION)); + + /** @todo Try optimize this for when RTFSOBJATTRADD_UNIX isn't set? */ + IO_STATUS_BLOCK Ios = RTNT_IO_STATUS_BLOCK_INITIALIZER; + NTSTATUS rcNt = NtQueryInformationFile(hFile, &Ios, pvBuf, sizeof(FILE_ALL_INFORMATION), FileAllInformation); + if ( NT_SUCCESS(rcNt) + || rcNt == STATUS_BUFFER_OVERFLOW) + { + FILE_ALL_INFORMATION *pAllInfo = (FILE_ALL_INFORMATION *)pvBuf; + pObjInfo->cbObject = pAllInfo->StandardInformation.EndOfFile.QuadPart; + pObjInfo->cbAllocated = pAllInfo->StandardInformation.AllocationSize.QuadPart; + RTTimeSpecSetNtTime(&pObjInfo->BirthTime, pAllInfo->BasicInformation.CreationTime.QuadPart); + RTTimeSpecSetNtTime(&pObjInfo->AccessTime, pAllInfo->BasicInformation.LastAccessTime.QuadPart); + RTTimeSpecSetNtTime(&pObjInfo->ModificationTime, pAllInfo->BasicInformation.LastWriteTime.QuadPart); + RTTimeSpecSetNtTime(&pObjInfo->ChangeTime, pAllInfo->BasicInformation.ChangeTime.QuadPart); + pObjInfo->Attr.fMode = rtFsModeFromDos( (pAllInfo->BasicInformation.FileAttributes << RTFS_DOS_SHIFT) + & RTFS_DOS_MASK_NT, + pszPath, pszPath ? strlen(pszPath) : 0, uReparseTag); + pObjInfo->Attr.enmAdditional = enmAddAttr; + if (enmAddAttr == RTFSOBJATTRADD_UNIX) + { + pObjInfo->Attr.u.Unix.uid = ~0U; + pObjInfo->Attr.u.Unix.gid = ~0U; + pObjInfo->Attr.u.Unix.cHardlinks = RT_MAX(1, pAllInfo->StandardInformation.NumberOfLinks); + pObjInfo->Attr.u.Unix.INodeIdDevice = 0; /* below */ + pObjInfo->Attr.u.Unix.INodeId = pAllInfo->InternalInformation.IndexNumber.QuadPart; + pObjInfo->Attr.u.Unix.fFlags = 0; + pObjInfo->Attr.u.Unix.GenerationId = 0; + pObjInfo->Attr.u.Unix.Device = 0; + + /* Get the serial number. */ + rcNt = NtQueryVolumeInformationFile(hFile, &Ios, pvBuf, (ULONG)RT_MIN(cbBuf, _2K), FileFsVolumeInformation); + if (NT_SUCCESS(rcNt) || rcNt == STATUS_BUFFER_OVERFLOW) + { + FILE_FS_VOLUME_INFORMATION *pVolInfo = (FILE_FS_VOLUME_INFORMATION *)pvBuf; + pObjInfo->Attr.u.Unix.INodeIdDevice = pVolInfo->VolumeSerialNumber; + } + } + + return rtPathNtQueryInfoFillInDummyData(VINF_SUCCESS, pObjInfo, enmAddAttr); + } + return RTErrConvertFromNtStatus(rcNt); +} + + +/** + * Worker for RTPathQueryInfoEx and RTDirRelPathQueryInfo. + * + * @returns IPRT status code. + * @param hRootDir The root directory that pNtName is relative to. + * @param pNtName The NT path which we want to query info for. + * @param pObjInfo Where to return the info. + * @param enmAddAttr What additional info to get/fake. + * @param fFlags Query flags (RTPATH_F_XXX). + * @param pszPath The path for detecting executables and such. + * Pass empty string if not applicable/available. + */ +DECLHIDDEN(int) rtPathNtQueryInfoWorker(HANDLE hRootDir, UNICODE_STRING *pNtName, PRTFSOBJINFO pObjInfo, + RTFSOBJATTRADD enmAddAttr, uint32_t fFlags, const char *pszPath) +{ + /* + * There are a three different ways of doing this: + * 1. Use NtQueryFullAttributesFile to the get basic file info. + * 2. Open whatever the path points to and use NtQueryInformationFile. + * 3. Open the parent directory and use NtQueryDirectoryFile like RTDirReadEx. + * + * The first two options may fail with sharing violations or access denied, + * in which case we must use the last one as fallback. + */ + HANDLE hFile = RTNT_INVALID_HANDLE_VALUE; + IO_STATUS_BLOCK Ios = RTNT_IO_STATUS_BLOCK_INITIALIZER; + NTSTATUS rcNt; + OBJECT_ATTRIBUTES ObjAttr; + union + { + FILE_NETWORK_OPEN_INFORMATION NetOpenInfo; + FILE_ALL_INFORMATION AllInfo; + FILE_FS_VOLUME_INFORMATION VolInfo; + FILE_BOTH_DIR_INFORMATION Both; + FILE_ID_BOTH_DIR_INFORMATION BothId; + uint8_t abPadding[sizeof(FILE_ID_BOTH_DIR_INFORMATION) + RTPATH_MAX * sizeof(wchar_t)]; + } uBuf; + + /* + * We can only use the first option if no additional UNIX attribs are + * requested and it isn't a symbolic link. NT directory object + */ + int rc = VINF_TRY_AGAIN; + if ( enmAddAttr != RTFSOBJATTRADD_UNIX + && g_pfnNtQueryFullAttributesFile) + { + InitializeObjectAttributes(&ObjAttr, pNtName, OBJ_CASE_INSENSITIVE, hRootDir, NULL); + rcNt = g_pfnNtQueryFullAttributesFile(&ObjAttr, &uBuf.NetOpenInfo); + if (NT_SUCCESS(rcNt)) + { + if (!(uBuf.NetOpenInfo.FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)) + { + pObjInfo->cbObject = uBuf.NetOpenInfo.EndOfFile.QuadPart; + pObjInfo->cbAllocated = uBuf.NetOpenInfo.AllocationSize.QuadPart; + RTTimeSpecSetNtTime(&pObjInfo->BirthTime, uBuf.NetOpenInfo.CreationTime.QuadPart); + RTTimeSpecSetNtTime(&pObjInfo->AccessTime, uBuf.NetOpenInfo.LastAccessTime.QuadPart); + RTTimeSpecSetNtTime(&pObjInfo->ModificationTime, uBuf.NetOpenInfo.LastWriteTime.QuadPart); + RTTimeSpecSetNtTime(&pObjInfo->ChangeTime, uBuf.NetOpenInfo.ChangeTime.QuadPart); + pObjInfo->Attr.fMode = rtFsModeFromDos((uBuf.NetOpenInfo.FileAttributes << RTFS_DOS_SHIFT) & RTFS_DOS_MASK_NT, + pszPath, strlen(pszPath), 0 /*uReparseTag*/); + pObjInfo->Attr.enmAdditional = enmAddAttr; + + return rtPathNtQueryInfoFillInDummyData(VINF_SUCCESS, pObjInfo, enmAddAttr); + } + } + else if ( rcNt == STATUS_OBJECT_TYPE_MISMATCH + || rcNt == STATUS_OBJECT_NAME_INVALID + || rcNt == STATUS_INVALID_PARAMETER) + { + rc = rtPathNtQueryInfoInDirectoryObject(&ObjAttr, pObjInfo, enmAddAttr, fFlags, &uBuf, sizeof(uBuf), rcNt); + if (RT_SUCCESS(rc)) + return rc; + } + else if ( rcNt != STATUS_ACCESS_DENIED + && rcNt != STATUS_SHARING_VIOLATION) + rc = RTErrConvertFromNtStatus(rcNt); + else + RTNT_IO_STATUS_BLOCK_REINIT(&Ios); + } + + /* + * Try the 2nd option. We might have to redo this if not following symbolic + * links and the reparse point isn't a symbolic link but a mount point or similar. + * We want to return information about the mounted root directory if we can, not + * the directory in which it was mounted. + */ + if (rc == VINF_TRY_AGAIN) + { + static int volatile g_fReparsePoints = -1; + uint32_t fOptions = FILE_OPEN_FOR_BACKUP_INTENT | FILE_SYNCHRONOUS_IO_NONALERT; + int fReparsePoints = g_fReparsePoints; + if (fReparsePoints != 0 && !(fFlags & RTPATH_F_FOLLOW_LINK)) + fOptions |= FILE_OPEN_REPARSE_POINT; + + InitializeObjectAttributes(&ObjAttr, pNtName, OBJ_CASE_INSENSITIVE, hRootDir, NULL); + rcNt = NtCreateFile(&hFile, + FILE_READ_ATTRIBUTES | SYNCHRONIZE, + &ObjAttr, + &Ios, + NULL /*pcbFile*/, + FILE_ATTRIBUTE_NORMAL, + FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, + FILE_OPEN, + fOptions, + NULL /*pvEaBuffer*/, + 0 /*cbEa*/); + if ( ( rcNt == STATUS_INVALID_PARAMETER + || rcNt == STATUS_INVALID_PARAMETER_9) + && fReparsePoints == -1 + && (fOptions & FILE_OPEN_REPARSE_POINT)) + { + fOptions &= ~FILE_OPEN_REPARSE_POINT; + rcNt = NtCreateFile(&hFile, + FILE_READ_ATTRIBUTES | SYNCHRONIZE, + &ObjAttr, + &Ios, + NULL /*pcbFile*/, + FILE_ATTRIBUTE_NORMAL, + FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, + FILE_OPEN, + fOptions, + NULL /*pvEaBuffer*/, + 0 /*cbEa*/); + if (rcNt != STATUS_INVALID_PARAMETER) + g_fReparsePoints = fReparsePoints = 0; + } + if (NT_SUCCESS(rcNt)) + { + /* Query tag information first in order to try re-open non-symlink reparse points. */ + FILE_ATTRIBUTE_TAG_INFORMATION TagInfo; + rcNt = NtQueryInformationFile(hFile, &Ios, &TagInfo, sizeof(TagInfo), FileAttributeTagInformation); + if (!NT_SUCCESS(rcNt)) + TagInfo.FileAttributes = TagInfo.ReparseTag = 0; + if ( !(TagInfo.FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) + || TagInfo.ReparseTag == IO_REPARSE_TAG_SYMLINK + || (fFlags & RTPATH_F_FOLLOW_LINK)) + { /* likely */ } + else + { + /* Reparse point that isn't a symbolic link, try follow the reparsing. */ + HANDLE hFile2; + RTNT_IO_STATUS_BLOCK_REINIT(&Ios); + rcNt = NtCreateFile(&hFile2, + FILE_READ_ATTRIBUTES | SYNCHRONIZE, + &ObjAttr, + &Ios, + NULL /*pcbFile*/, + FILE_ATTRIBUTE_NORMAL, + FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, + FILE_OPEN, + FILE_OPEN_FOR_BACKUP_INTENT | FILE_SYNCHRONOUS_IO_NONALERT, + NULL /*pvEaBuffer*/, + 0 /*cbEa*/); + if (NT_SUCCESS(rcNt)) + { + NtClose(hFile); + hFile = hFile2; + TagInfo.FileAttributes = TagInfo.ReparseTag = 0; + } + } + + /* + * Get the information we need and convert it. + */ + rc = rtPathNtQueryInfoFromHandle(hFile, &uBuf, sizeof(uBuf), pObjInfo, enmAddAttr, pszPath, TagInfo.ReparseTag); + NtClose(hFile); + if (RT_SUCCESS(rc)) + return rc; + + if (RT_FAILURE(rc)) + rc = VINF_TRY_AGAIN; + } + else if ( rcNt == STATUS_OBJECT_TYPE_MISMATCH + || rcNt == STATUS_OBJECT_NAME_INVALID + /*|| rcNt == STATUS_INVALID_PARAMETER*/) + { + rc = rtPathNtQueryInfoInDirectoryObject(&ObjAttr, pObjInfo, enmAddAttr, fFlags, &uBuf, sizeof(uBuf), rcNt); + if (RT_SUCCESS(rc)) + return rc; + } + else if ( rcNt != STATUS_ACCESS_DENIED + && rcNt != STATUS_SHARING_VIOLATION) + rc = RTErrConvertFromNtStatus(rcNt); + else + RTNT_IO_STATUS_BLOCK_REINIT(&Ios); + } + + /* + * Try the 3rd option if none of the other worked. + * If none of the above worked, try open the directory and enumerate + * the file we're after. This + */ + if (rc == VINF_TRY_AGAIN) + { + /* Split up the name into parent directory path and filename. */ + UNICODE_STRING NtDirName; + UNICODE_STRING NtFilter; + ntPathNtSplitName(pNtName, &NtDirName, &NtFilter, false /*fNoParentDirSlash*/); + + /* Try open the directory. */ + InitializeObjectAttributes(&ObjAttr, &NtDirName, OBJ_CASE_INSENSITIVE, hRootDir, NULL); + rcNt = NtCreateFile(&hFile, + FILE_LIST_DIRECTORY | SYNCHRONIZE, + &ObjAttr, + &Ios, + NULL /*pcbFile*/, + FILE_ATTRIBUTE_NORMAL, + FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, + FILE_OPEN, + FILE_DIRECTORY_FILE | FILE_OPEN_FOR_BACKUP_INTENT | FILE_SYNCHRONOUS_IO_NONALERT, + NULL /*pvEaBuffer*/, + 0 /*cbEa*/); + if (NT_SUCCESS(rcNt)) + { + FILE_INFORMATION_CLASS enmInfoClass; + if (RT_MAKE_U64(RTNtCurrentPeb()->OSMinorVersion, RTNtCurrentPeb()->OSMajorVersion) > RT_MAKE_U64(0,5) /* > W2K */) + enmInfoClass = FileIdBothDirectoryInformation; /* Introduced in XP, from I can tell. */ + else + enmInfoClass = FileBothDirectoryInformation; + rcNt = NtQueryDirectoryFile(hFile, + NULL /* Event */, + NULL /* ApcRoutine */, + NULL /* ApcContext */, + &Ios, + &uBuf, + RT_MIN(sizeof(uBuf), 0xfff0), + enmInfoClass, + TRUE /*ReturnSingleEntry */, + &NtFilter, + FALSE /*RestartScan */); + if (NT_SUCCESS(rcNt)) + { + pObjInfo->cbObject = uBuf.Both.EndOfFile.QuadPart; + pObjInfo->cbAllocated = uBuf.Both.AllocationSize.QuadPart; + + RTTimeSpecSetNtTime(&pObjInfo->BirthTime, uBuf.Both.CreationTime.QuadPart); + RTTimeSpecSetNtTime(&pObjInfo->AccessTime, uBuf.Both.LastAccessTime.QuadPart); + RTTimeSpecSetNtTime(&pObjInfo->ModificationTime, uBuf.Both.LastWriteTime.QuadPart); + RTTimeSpecSetNtTime(&pObjInfo->ChangeTime, uBuf.Both.ChangeTime.QuadPart); + + pObjInfo->Attr.fMode = rtFsModeFromDos((uBuf.Both.FileAttributes << RTFS_DOS_SHIFT) & RTFS_DOS_MASK_NT, + pszPath, strlen(pszPath), uBuf.Both.EaSize); + + pObjInfo->Attr.enmAdditional = enmAddAttr; + if (enmAddAttr == RTFSOBJATTRADD_UNIX) + { + pObjInfo->Attr.u.Unix.uid = ~0U; + pObjInfo->Attr.u.Unix.gid = ~0U; + pObjInfo->Attr.u.Unix.cHardlinks = 1; + pObjInfo->Attr.u.Unix.INodeIdDevice = 0; /* below */ + pObjInfo->Attr.u.Unix.INodeId = enmInfoClass == FileIdBothDirectoryInformation + ? uBuf.BothId.FileId.QuadPart : 0; + pObjInfo->Attr.u.Unix.fFlags = 0; + pObjInfo->Attr.u.Unix.GenerationId = 0; + pObjInfo->Attr.u.Unix.Device = 0; + + /* Get the serial number. */ + rcNt = NtQueryVolumeInformationFile(hFile, &Ios, &uBuf, RT_MIN(sizeof(uBuf), _2K), + FileFsVolumeInformation); + if (NT_SUCCESS(rcNt)) + pObjInfo->Attr.u.Unix.INodeIdDevice = uBuf.VolInfo.VolumeSerialNumber; + } + + rc = rtPathNtQueryInfoFillInDummyData(VINF_SUCCESS, pObjInfo, enmAddAttr); + } + else + rc = RTErrConvertFromNtStatus(rcNt); + + NtClose(hFile); + } + /* + * Quite possibly a object directory. + */ + else if ( rcNt == STATUS_OBJECT_NAME_INVALID /* with trailing slash */ + || rcNt == STATUS_OBJECT_TYPE_MISMATCH /* without trailing slash */ ) + { + InitializeObjectAttributes(&ObjAttr, pNtName, OBJ_CASE_INSENSITIVE, hRootDir, NULL); + rc = rtPathNtQueryInfoInDirectoryObject(&ObjAttr, pObjInfo, enmAddAttr, fFlags, &uBuf, sizeof(uBuf), rcNt); + if (RT_FAILURE(rc)) + rc = RTErrConvertFromNtStatus(rcNt); + } + else + rc = RTErrConvertFromNtStatus(rcNt); + } + + return rc; +} + + +RTR3DECL(int) RTPathQueryInfoEx(const char *pszPath, PRTFSOBJINFO pObjInfo, RTFSOBJATTRADD enmAdditionalAttribs, uint32_t fFlags) +{ + /* + * Validate input. + */ + AssertPtrReturn(pszPath, VERR_INVALID_POINTER); + AssertReturn(*pszPath, VERR_INVALID_PARAMETER); + AssertPtrReturn(pObjInfo, VERR_INVALID_POINTER); + AssertMsgReturn( enmAdditionalAttribs >= RTFSOBJATTRADD_NOTHING + && enmAdditionalAttribs <= RTFSOBJATTRADD_LAST, + ("Invalid enmAdditionalAttribs=%p\n", enmAdditionalAttribs), + VERR_INVALID_PARAMETER); + AssertMsgReturn(RTPATH_F_IS_VALID(fFlags, 0), ("%#x\n", fFlags), VERR_INVALID_PARAMETER); + + + /* + * Convert the input path and call common worker. + */ + HANDLE hRootDir; + UNICODE_STRING NtName; + int rc = RTNtPathFromWinUtf8(&NtName, &hRootDir, pszPath); + if (RT_SUCCESS(rc)) + { + rc = rtPathNtQueryInfoWorker(hRootDir, &NtName, pObjInfo, enmAdditionalAttribs, fFlags, pszPath); + RTNtPathFree(&NtName, &hRootDir); + } + return rc; +} + + +RTR3DECL(int) RTPathQueryInfo(const char *pszPath, PRTFSOBJINFO pObjInfo, RTFSOBJATTRADD enmAdditionalAttribs) +{ + return RTPathQueryInfoEx(pszPath, pObjInfo, enmAdditionalAttribs, RTPATH_F_ON_LINK); +} + |