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Diffstat (limited to '')
| -rw-r--r-- | src/VBox/Runtime/r3/nt/dirrel-r3-nt.cpp | 772 |
1 files changed, 772 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r3/nt/dirrel-r3-nt.cpp b/src/VBox/Runtime/r3/nt/dirrel-r3-nt.cpp new file mode 100644 index 00000000..73303182 --- /dev/null +++ b/src/VBox/Runtime/r3/nt/dirrel-r3-nt.cpp @@ -0,0 +1,772 @@ +/* $Id: dirrel-r3-nt.cpp $ */ +/** @file + * IPRT - Directory relative base APIs, NT implementation + */ + +/* + * 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_DIR +#include <iprt/dir.h> +#include "internal-r3-nt.h" + +#include <iprt/assert.h> +#include <iprt/file.h> +#include <iprt/err.h> +#include <iprt/path.h> +#include <iprt/string.h> +#include <iprt/symlink.h> +#include <iprt/utf16.h> +#include "internal/dir.h" +#include "internal/file.h" +#include "internal/fs.h" +#include "internal/path.h" + + +/********************************************************************************************************************************* +* Defined Constants And Macros * +*********************************************************************************************************************************/ +/** Getst the RTNTPATHRELATIVEASCENT value for RTNtPathRelativeFromUtf8. */ +#define RTDIRREL_NT_GET_ASCENT(a_pThis) \ + ( !(pThis->fFlags & RTDIR_F_DENY_ASCENT) ? kRTNtPathRelativeAscent_Allow : kRTNtPathRelativeAscent_Fail ) + + + +/** + * Helper that builds a full path for a directory relative path. + * + * @returns IPRT status code. + * @param pThis The directory. + * @param pszPathDst The destination buffer. + * @param cbPathDst The size of the destination buffer. + * @param pszRelPath The relative path. + */ +static int rtDirRelBuildFullPath(PRTDIRINTERNAL pThis, char *pszPathDst, size_t cbPathDst, const char *pszRelPath) +{ + AssertMsgReturn(!RTPathStartsWithRoot(pszRelPath), ("pszRelPath='%s'\n", pszRelPath), VERR_PATH_IS_NOT_RELATIVE); + + /* + * Let's hope we can avoid checking for ascension. + * + * Note! We don't take symbolic links into account here. That can be + * done later if desired. + */ + if ( !(pThis->fFlags & RTDIR_F_DENY_ASCENT) + || strstr(pszRelPath, "..") == NULL) + { + size_t const cchRelPath = strlen(pszRelPath); + size_t const cchDirPath = pThis->cchPath; + if (cchDirPath + cchRelPath < cbPathDst) + { + memcpy(pszPathDst, pThis->pszPath, cchDirPath); + memcpy(&pszPathDst[cchDirPath], pszRelPath, cchRelPath); + pszPathDst[cchDirPath + cchRelPath] = '\0'; + return VINF_SUCCESS; + } + return VERR_FILENAME_TOO_LONG; + } + + /* + * Calc the absolute path using the directory as a base, then check if the result + * still starts with the full directory path. + * + * This ASSUMES that pThis->pszPath is an absolute path. + */ + int rc = RTPathAbsEx(pThis->pszPath, pszRelPath, pszPathDst, cbPathDst); + if (RT_SUCCESS(rc)) + { + if (RTPathStartsWith(pszPathDst, pThis->pszPath)) + return VINF_SUCCESS; + return VERR_PATH_NOT_FOUND; + } + return rc; +} + + +/* + * + * + * RTFile stuff. + * RTFile stuff. + * RTFile stuff. + * + * + */ + + +RTDECL(int) RTDirRelFileOpen(RTDIR hDir, const char *pszRelFilename, uint64_t fOpen, PRTFILE phFile) +{ + PRTDIRINTERNAL pThis = hDir; + AssertPtrReturn(pThis, VERR_INVALID_HANDLE); + AssertReturn(pThis->u32Magic == RTDIR_MAGIC, VERR_INVALID_HANDLE); + + /* + * Validate and convert flags. + */ + uint32_t fDesiredAccess; + uint32_t fObjAttribs; + uint32_t fFileAttribs; + uint32_t fShareAccess; + uint32_t fCreateDisposition; + uint32_t fCreateOptions; + int rc = rtFileNtValidateAndConvertFlags(fOpen, &fDesiredAccess, &fObjAttribs, &fFileAttribs, + &fShareAccess, &fCreateDisposition, &fCreateOptions); + if (RT_SUCCESS(rc)) + { + /* + * Convert and normalize the path. + */ + UNICODE_STRING NtName; + HANDLE hRoot = pThis->hDir; + rc = RTNtPathRelativeFromUtf8(&NtName, &hRoot, pszRelFilename, RTDIRREL_NT_GET_ASCENT(pThis), + pThis->enmInfoClass == FileMaximumInformation); + if (RT_SUCCESS(rc)) + { + HANDLE hFile = RTNT_INVALID_HANDLE_VALUE; + IO_STATUS_BLOCK Ios = RTNT_IO_STATUS_BLOCK_INITIALIZER; + OBJECT_ATTRIBUTES ObjAttr; + InitializeObjectAttributes(&ObjAttr, &NtName, fObjAttribs, hRoot, NULL /*pSecDesc*/); + + NTSTATUS rcNt = NtCreateFile(&hFile, + fDesiredAccess, + &ObjAttr, + &Ios, + NULL /* AllocationSize*/, + fFileAttribs, + fShareAccess, + fCreateDisposition, + fCreateOptions, + NULL /*EaBuffer*/, + 0 /*EaLength*/); + if (NT_SUCCESS(rcNt)) + { + rc = RTFileFromNative(phFile, (uintptr_t)hFile); + if (RT_FAILURE(rc)) + NtClose(hFile); + } + else + rc = RTErrConvertFromNtStatus(rcNt); + RTNtPathFree(&NtName, NULL); + } + } + return rc; +} + + + +/* + * + * + * RTDir stuff. + * RTDir stuff. + * RTDir stuff. + * + * + */ + + +/** + * Helper for cooking up a path string for rtDirOpenRelativeOrHandle. + * + * @returns IPRT status code. + * @param pszDst The destination buffer. + * @param cbDst The size of the destination buffer. + * @param pThis The directory this is relative to. + * @param pNtPath The NT path with a possibly relative path. + * @param fRelative Whether @a pNtPath is relative or not. + * @param pszPath The input path. + */ +static int rtDirRelJoinPathForDirOpen(char *pszDst, size_t cbDst, PRTDIRINTERNAL pThis, + PUNICODE_STRING pNtPath, bool fRelative, const char *pszPath) +{ + int rc; + if (fRelative) + { + size_t cchRel = 0; + rc = RTUtf16CalcUtf8LenEx(pNtPath->Buffer, pNtPath->Length / sizeof(RTUTF16), &cchRel); + AssertRC(rc); + if (RT_SUCCESS(rc)) + { + if (pThis->cchPath + cchRel < cbDst) + { + size_t cchBase = pThis->cchPath; + memcpy(pszDst, pThis->pszPath, cchBase); + pszDst += cchBase; + cbDst -= cchBase; + rc = RTUtf16ToUtf8Ex(pNtPath->Buffer, pNtPath->Length / sizeof(RTUTF16), &pszDst, cbDst, NULL); + } + else + rc = VERR_FILENAME_TOO_LONG; + } + } + else + { + /** @todo would be better to convert pNtName to DOS/WIN path here, + * as it is absolute and doesn't need stuff resolved. */ + rc = RTPathJoin(pszDst, cbDst, pThis->pszPath, pszPath); + } + return rc; +} + +RTDECL(int) RTDirRelDirOpen(RTDIR hDir, const char *pszDir, RTDIR *phDir) +{ + return RTDirRelDirOpenFiltered(hDir, pszDir, RTDIRFILTER_NONE, 0 /*fFlags*/, phDir); +} + + +RTDECL(int) RTDirRelDirOpenFiltered(RTDIR hDir, const char *pszDirAndFilter, RTDIRFILTER enmFilter, + uint32_t fFlags, RTDIR *phDir) +{ + PRTDIRINTERNAL pThis = hDir; + AssertPtrReturn(pThis, VERR_INVALID_HANDLE); + AssertReturn(pThis->u32Magic == RTDIR_MAGIC, VERR_INVALID_HANDLE); + + /* + * Convert and normalize the path. + */ + UNICODE_STRING NtName; + HANDLE hRoot = pThis->hDir; + int rc = RTNtPathRelativeFromUtf8(&NtName, &hRoot, pszDirAndFilter, RTDIRREL_NT_GET_ASCENT(pThis), + pThis->enmInfoClass == FileMaximumInformation); + if (RT_SUCCESS(rc)) + { + char szAbsDirAndFilter[RTPATH_MAX]; + rc = rtDirRelJoinPathForDirOpen(szAbsDirAndFilter, sizeof(szAbsDirAndFilter), pThis, + &NtName, hRoot != NULL, pszDirAndFilter); + if (RT_SUCCESS(rc)) + { + /* Drop the filter from the NT name. */ + switch (enmFilter) + { + case RTDIRFILTER_NONE: + break; + case RTDIRFILTER_WINNT: + case RTDIRFILTER_UNIX: + case RTDIRFILTER_UNIX_UPCASED: + { + size_t cwc = NtName.Length / sizeof(RTUTF16); + while ( cwc > 0 + && NtName.Buffer[cwc - 1] != '\\') + cwc--; + NtName.Buffer[cwc] = '\0'; + NtName.Length = (uint16_t)(cwc * sizeof(RTUTF16)); + break; + } + default: + AssertFailedBreak(); + } + + rc = rtDirOpenRelativeOrHandle(phDir, szAbsDirAndFilter, enmFilter, fFlags, (uintptr_t)hRoot, &NtName); + } + RTNtPathFree(&NtName, NULL); + } + return rc; +} + + +RTDECL(int) RTDirRelDirCreate(RTDIR hDir, const char *pszRelPath, RTFMODE fMode, uint32_t fCreate, RTDIR *phSubDir) +{ + PRTDIRINTERNAL pThis = hDir; + AssertPtrReturn(pThis, VERR_INVALID_HANDLE); + AssertReturn(pThis->u32Magic == RTDIR_MAGIC, VERR_INVALID_HANDLE); + AssertReturn(!(fCreate & ~RTDIRCREATE_FLAGS_VALID_MASK), VERR_INVALID_FLAGS); + fMode = rtFsModeNormalize(fMode, pszRelPath, 0); + AssertReturn(rtFsModeIsValidPermissions(fMode), VERR_INVALID_FMODE); + AssertPtrNullReturn(phSubDir, VERR_INVALID_POINTER); + + /* + * Convert and normalize the path. + */ + UNICODE_STRING NtName; + HANDLE hRoot = pThis->hDir; + int rc = RTNtPathRelativeFromUtf8(&NtName, &hRoot, pszRelPath, RTDIRREL_NT_GET_ASCENT(pThis), + pThis->enmInfoClass == FileMaximumInformation); + if (RT_SUCCESS(rc)) + { + HANDLE hNewDir = RTNT_INVALID_HANDLE_VALUE; + IO_STATUS_BLOCK Ios = RTNT_IO_STATUS_BLOCK_INITIALIZER; + OBJECT_ATTRIBUTES ObjAttr; + InitializeObjectAttributes(&ObjAttr, &NtName, 0 /*fAttrib*/, hRoot, NULL); + + ULONG fDirAttribs = (fCreate & RTFS_DOS_MASK_NT) >> RTFS_DOS_SHIFT; + if (!(fCreate & RTDIRCREATE_FLAGS_NOT_CONTENT_INDEXED_DONT_SET)) + fDirAttribs |= FILE_ATTRIBUTE_NOT_CONTENT_INDEXED; + if (!fDirAttribs) + fDirAttribs = FILE_ATTRIBUTE_NORMAL; + + NTSTATUS rcNt = NtCreateFile(&hNewDir, + phSubDir + ? FILE_WRITE_ATTRIBUTES | FILE_READ_ATTRIBUTES | FILE_LIST_DIRECTORY | FILE_TRAVERSE | SYNCHRONIZE + : SYNCHRONIZE, + &ObjAttr, + &Ios, + NULL /*AllocationSize*/, + fDirAttribs, + FILE_SHARE_READ | FILE_SHARE_WRITE, + FILE_CREATE, + FILE_DIRECTORY_FILE | FILE_OPEN_FOR_BACKUP_INTENT | FILE_SYNCHRONOUS_IO_NONALERT, + NULL /*EaBuffer*/, + 0 /*EaLength*/); + + /* Just in case someone takes offence at FILE_ATTRIBUTE_NOT_CONTENT_INDEXED. */ + if ( ( rcNt == STATUS_INVALID_PARAMETER + || rcNt == STATUS_INVALID_PARAMETER_7) + && (fDirAttribs & FILE_ATTRIBUTE_NOT_CONTENT_INDEXED) + && (fCreate & RTDIRCREATE_FLAGS_NOT_CONTENT_INDEXED_NOT_CRITICAL) ) + { + fDirAttribs &= ~FILE_ATTRIBUTE_NOT_CONTENT_INDEXED; + if (!fDirAttribs) + fDirAttribs = FILE_ATTRIBUTE_NORMAL; + rcNt = NtCreateFile(&hNewDir, + phSubDir + ? FILE_WRITE_ATTRIBUTES | FILE_READ_ATTRIBUTES | FILE_LIST_DIRECTORY | FILE_TRAVERSE | SYNCHRONIZE + : SYNCHRONIZE, + &ObjAttr, + &Ios, + NULL /*AllocationSize*/, + fDirAttribs, + FILE_SHARE_READ | FILE_SHARE_WRITE, + FILE_CREATE, + FILE_DIRECTORY_FILE | FILE_OPEN_FOR_BACKUP_INTENT | FILE_SYNCHRONOUS_IO_NONALERT, + NULL /*EaBuffer*/, + 0 /*EaLength*/); + } + + if (NT_SUCCESS(rcNt)) + { + if (!phSubDir) + { + NtClose(hNewDir); + rc = VINF_SUCCESS; + } + else + { + char szAbsDirAndFilter[RTPATH_MAX]; + rc = rtDirRelJoinPathForDirOpen(szAbsDirAndFilter, sizeof(szAbsDirAndFilter), pThis, + &NtName, hRoot != NULL, pszRelPath); + if (RT_SUCCESS(rc)) + rc = rtDirOpenRelativeOrHandle(phSubDir, pszRelPath, RTDIRFILTER_NONE, 0 /*fFlags*/, + (uintptr_t)hNewDir, NULL /*pvNativeRelative*/); + if (RT_FAILURE(rc)) + NtClose(hNewDir); + } + } + else + rc = RTErrConvertFromNtStatus(rcNt); + RTNtPathFree(&NtName, NULL); + } + return rc; +} + + +RTDECL(int) RTDirRelDirRemove(RTDIR hDir, const char *pszRelPath) +{ + PRTDIRINTERNAL pThis = hDir; + AssertPtrReturn(pThis, VERR_INVALID_HANDLE); + AssertReturn(pThis->u32Magic == RTDIR_MAGIC, VERR_INVALID_HANDLE); + + /* + * Convert and normalize the path. + */ + UNICODE_STRING NtName; + HANDLE hRoot = pThis->hDir; + int rc = RTNtPathRelativeFromUtf8(&NtName, &hRoot, pszRelPath, RTDIRREL_NT_GET_ASCENT(pThis), + pThis->enmInfoClass == FileMaximumInformation); + if (RT_SUCCESS(rc)) + { + HANDLE hSubDir = RTNT_INVALID_HANDLE_VALUE; + IO_STATUS_BLOCK Ios = RTNT_IO_STATUS_BLOCK_INITIALIZER; + OBJECT_ATTRIBUTES ObjAttr; + InitializeObjectAttributes(&ObjAttr, &NtName, 0 /*fAttrib*/, hRoot, NULL); + + NTSTATUS rcNt = NtCreateFile(&hSubDir, + DELETE | SYNCHRONIZE, + &ObjAttr, + &Ios, + NULL /*AllocationSize*/, + FILE_ATTRIBUTE_NORMAL, + FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE, + FILE_OPEN, + FILE_DIRECTORY_FILE | FILE_OPEN_FOR_BACKUP_INTENT | FILE_SYNCHRONOUS_IO_NONALERT | FILE_OPEN_REPARSE_POINT, + NULL /*EaBuffer*/, + 0 /*EaLength*/); + if (NT_SUCCESS(rcNt)) + { + FILE_DISPOSITION_INFORMATION DispInfo; + DispInfo.DeleteFile = TRUE; + RTNT_IO_STATUS_BLOCK_REINIT(&Ios); + rcNt = NtSetInformationFile(hSubDir, &Ios, &DispInfo, sizeof(DispInfo), FileDispositionInformation); + + NTSTATUS rcNt2 = NtClose(hSubDir); + if (!NT_SUCCESS(rcNt2) && NT_SUCCESS(rcNt)) + rcNt = rcNt2; + } + + if (NT_SUCCESS(rcNt)) + rc = VINF_SUCCESS; + else + rc = RTErrConvertFromNtStatus(rcNt); + + RTNtPathFree(&NtName, NULL); + } + return rc; +} + + +/* + * + * RTPath stuff. + * RTPath stuff. + * RTPath stuff. + * + * + */ + + +RTDECL(int) RTDirRelPathQueryInfo(RTDIR hDir, const char *pszRelPath, PRTFSOBJINFO pObjInfo, + RTFSOBJATTRADD enmAddAttr, uint32_t fFlags) +{ + PRTDIRINTERNAL pThis = hDir; + AssertPtrReturn(pThis, VERR_INVALID_HANDLE); + AssertReturn(pThis->u32Magic == RTDIR_MAGIC, VERR_INVALID_HANDLE); + + /* + * Validate and convert flags. + */ + UNICODE_STRING NtName; + HANDLE hRoot = pThis->hDir; + int rc = RTNtPathRelativeFromUtf8(&NtName, &hRoot, pszRelPath, RTDIRREL_NT_GET_ASCENT(pThis), + pThis->enmInfoClass == FileMaximumInformation); + if (RT_SUCCESS(rc)) + { + if (NtName.Length != 0 || hRoot == NULL) + rc = rtPathNtQueryInfoWorker(hRoot, &NtName, pObjInfo, enmAddAttr, fFlags, pszRelPath); + else + rc = RTDirQueryInfo(hDir, pObjInfo, enmAddAttr); + RTNtPathFree(&NtName, NULL); + } + return rc; +} + + +/** + * Changes the mode flags of a file system object relative to @a hDir. + * + * The API requires at least one of the mode flag sets (Unix/Dos) to + * be set. The type is ignored. + * + * @returns IPRT status code. + * @param hDir The directory @a pszRelPath is relative to. + * @param pszRelPath The relative path to the file system object. + * @param fMode The new file mode, see @ref grp_rt_fs for details. + * @param fFlags RTPATH_F_ON_LINK or RTPATH_F_FOLLOW_LINK. + * + * @sa RTPathSetMode + */ +RTDECL(int) RTDirRelPathSetMode(RTDIR hDir, const char *pszRelPath, RTFMODE fMode, uint32_t fFlags) +{ + PRTDIRINTERNAL pThis = hDir; + AssertPtrReturn(pThis, VERR_INVALID_HANDLE); + AssertReturn(pThis->u32Magic == RTDIR_MAGIC, VERR_INVALID_HANDLE); + fMode = rtFsModeNormalize(fMode, pszRelPath, 0); + AssertReturn(rtFsModeIsValidPermissions(fMode), VERR_INVALID_FMODE); + AssertMsgReturn(RTPATH_F_IS_VALID(fFlags, 0), ("%#x\n", fFlags), VERR_INVALID_FLAGS); + + /* + * Convert and normalize the path. + */ + UNICODE_STRING NtName; + HANDLE hRoot = pThis->hDir; + int rc = RTNtPathRelativeFromUtf8(&NtName, &hRoot, pszRelPath, RTDIRREL_NT_GET_ASCENT(pThis), + pThis->enmInfoClass == FileMaximumInformation); + if (RT_SUCCESS(rc)) + { + HANDLE hSubDir = RTNT_INVALID_HANDLE_VALUE; + IO_STATUS_BLOCK Ios = RTNT_IO_STATUS_BLOCK_INITIALIZER; + OBJECT_ATTRIBUTES ObjAttr; + InitializeObjectAttributes(&ObjAttr, &NtName, 0 /*fAttrib*/, hRoot, NULL); + + ULONG fOpenOptions = FILE_OPEN_FOR_BACKUP_INTENT | FILE_SYNCHRONOUS_IO_NONALERT | FILE_OPEN_REPARSE_POINT; + if (fFlags & RTPATH_F_ON_LINK) + fOpenOptions |= FILE_OPEN_REPARSE_POINT; + NTSTATUS rcNt = NtCreateFile(&hSubDir, + FILE_WRITE_ATTRIBUTES | SYNCHRONIZE, + &ObjAttr, + &Ios, + NULL /*AllocationSize*/, + FILE_ATTRIBUTE_NORMAL, + FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE, + FILE_OPEN, + fOpenOptions, + NULL /*EaBuffer*/, + 0 /*EaLength*/); + if (NT_SUCCESS(rcNt)) + { + rc = rtNtFileSetModeWorker(hSubDir, fMode); + + rcNt = NtClose(hSubDir); + if (!NT_SUCCESS(rcNt) && RT_SUCCESS(rc)) + rc = RTErrConvertFromNtStatus(rcNt); + } + else + rc = RTErrConvertFromNtStatus(rcNt); + + RTNtPathFree(&NtName, NULL); + } + return rc; +} + + +/** + * Changes one or more of the timestamps associated of file system object + * relative to @a hDir. + * + * @returns IPRT status code. + * @param hDir The directory @a pszRelPath is relative to. + * @param pszRelPath The relative path to the file system object. + * @param pAccessTime Pointer to the new access time. + * @param pModificationTime Pointer to the new modification time. + * @param pChangeTime Pointer to the new change time. NULL if not to be changed. + * @param pBirthTime Pointer to the new time of birth. NULL if not to be changed. + * @param fFlags RTPATH_F_ON_LINK or RTPATH_F_FOLLOW_LINK. + * + * @remark The file system might not implement all these time attributes, + * the API will ignore the ones which aren't supported. + * + * @remark The file system might not implement the time resolution + * employed by this interface, the time will be chopped to fit. + * + * @remark The file system may update the change time even if it's + * not specified. + * + * @remark POSIX can only set Access & Modification and will always set both. + * + * @sa RTPathSetTimesEx + */ +RTDECL(int) RTDirRelPathSetTimes(RTDIR hDir, const char *pszRelPath, PCRTTIMESPEC pAccessTime, PCRTTIMESPEC pModificationTime, + PCRTTIMESPEC pChangeTime, PCRTTIMESPEC pBirthTime, uint32_t fFlags) +{ + PRTDIRINTERNAL pThis = hDir; + AssertPtrReturn(pThis, VERR_INVALID_HANDLE); + AssertReturn(pThis->u32Magic == RTDIR_MAGIC, VERR_INVALID_HANDLE); + + char szPath[RTPATH_MAX]; + int rc = rtDirRelBuildFullPath(pThis, szPath, sizeof(szPath), pszRelPath); + if (RT_SUCCESS(rc)) + { +RTAssertMsg2("DBG: RTDirRelPathSetTimes(%s)...\n", szPath); + rc = RTPathSetTimesEx(szPath, pAccessTime, pModificationTime, pChangeTime, pBirthTime, fFlags); + } + return rc; +} + + +/** + * Changes the owner and/or group of a file system object relative to @a hDir. + * + * @returns IPRT status code. + * @param hDir The directory @a pszRelPath is relative to. + * @param pszRelPath The relative path to the file system object. + * @param uid The new file owner user id. Pass NIL_RTUID to leave + * this unchanged. + * @param gid The new group id. Pass NIL_RTGID to leave this + * unchanged. + * @param fFlags RTPATH_F_ON_LINK or RTPATH_F_FOLLOW_LINK. + * + * @sa RTPathSetOwnerEx + */ +RTDECL(int) RTDirRelPathSetOwner(RTDIR hDir, const char *pszRelPath, uint32_t uid, uint32_t gid, uint32_t fFlags) +{ + PRTDIRINTERNAL pThis = hDir; + AssertPtrReturn(pThis, VERR_INVALID_HANDLE); + AssertReturn(pThis->u32Magic == RTDIR_MAGIC, VERR_INVALID_HANDLE); + + char szPath[RTPATH_MAX]; + int rc = rtDirRelBuildFullPath(pThis, szPath, sizeof(szPath), pszRelPath); + if (RT_SUCCESS(rc)) + { +RTAssertMsg2("DBG: RTDirRelPathSetOwner(%s)...\n", szPath); +#ifndef RT_OS_WINDOWS + rc = RTPathSetOwnerEx(szPath, uid, gid, fFlags); +#else + rc = VERR_NOT_IMPLEMENTED; + RT_NOREF(uid, gid, fFlags); +#endif + } + return rc; +} + + +/** + * Renames a directory relative path within a filesystem. + * + * This will rename symbolic links. If RTPATHRENAME_FLAGS_REPLACE is used and + * pszDst is a symbolic link, it will be replaced and not its target. + * + * @returns IPRT status code. + * @param hDirSrc The directory the source path is relative to. + * @param pszSrc The source path, relative to @a hDirSrc. + * @param hDirSrc The directory the destination path is relative to. + * @param pszDst The destination path, relative to @a hDirDst. + * @param fRename Rename flags, RTPATHRENAME_FLAGS_XXX. + * + * @sa RTPathRename + */ +RTDECL(int) RTDirRelPathRename(RTDIR hDirSrc, const char *pszSrc, RTDIR hDirDst, const char *pszDst, unsigned fRename) +{ + PRTDIRINTERNAL pThis = hDirSrc; + AssertPtrReturn(pThis, VERR_INVALID_HANDLE); + AssertReturn(pThis->u32Magic == RTDIR_MAGIC, VERR_INVALID_HANDLE); + + PRTDIRINTERNAL pThat = hDirDst; + if (pThat != pThis) + { + AssertPtrReturn(pThat, VERR_INVALID_HANDLE); + AssertReturn(pThat->u32Magic != RTDIR_MAGIC, VERR_INVALID_HANDLE); + } + + char szSrcPath[RTPATH_MAX]; + int rc = rtDirRelBuildFullPath(pThis, szSrcPath, sizeof(szSrcPath), pszSrc); + if (RT_SUCCESS(rc)) + { + char szDstPath[RTPATH_MAX]; + rc = rtDirRelBuildFullPath(pThis, szDstPath, sizeof(szDstPath), pszDst); + if (RT_SUCCESS(rc)) + { +RTAssertMsg2("DBG: RTDirRelPathRename(%s,%s)...\n", szSrcPath, szDstPath); + rc = RTPathRename(szSrcPath, szDstPath, fRename); + } + } + return rc; +} + + +/** + * Removes the last component of the directory relative path. + * + * @returns IPRT status code. + * @param hDir The directory @a pszRelPath is relative to. + * @param pszRelPath The relative path to the file system object. + * @param fUnlink Unlink flags, RTPATHUNLINK_FLAGS_XXX. + * + * @sa RTPathUnlink + */ +RTDECL(int) RTDirRelPathUnlink(RTDIR hDir, const char *pszRelPath, uint32_t fUnlink) +{ + PRTDIRINTERNAL pThis = hDir; + AssertPtrReturn(pThis, VERR_INVALID_HANDLE); + AssertReturn(pThis->u32Magic == RTDIR_MAGIC, VERR_INVALID_HANDLE); + + char szPath[RTPATH_MAX]; + int rc = rtDirRelBuildFullPath(pThis, szPath, sizeof(szPath), pszRelPath); + if (RT_SUCCESS(rc)) + { +RTAssertMsg2("DBG: RTDirRelPathUnlink(%s)...\n", szPath); + rc = RTPathUnlink(szPath, fUnlink); + } + return rc; +} + + +/* + * + * RTSymlink stuff. + * RTSymlink stuff. + * RTSymlink stuff. + * + * + */ + + +/** + * Creates a symbolic link (@a pszSymlink) relative to @a hDir targeting @a + * pszTarget. + * + * @returns IPRT status code. + * @param hDir The directory @a pszSymlink is relative to. + * @param pszSymlink The relative path of the symbolic link. + * @param pszTarget The path to the symbolic link target. This is + * relative to @a pszSymlink or an absolute path. + * @param enmType The symbolic link type. For Windows compatability + * it is very important to set this correctly. When + * RTSYMLINKTYPE_UNKNOWN is used, the API will try + * make a guess and may attempt query information + * about @a pszTarget in the process. + * @param fCreate Create flags, RTSYMLINKCREATE_FLAGS_XXX. + * + * @sa RTSymlinkCreate + */ +RTDECL(int) RTDirRelSymlinkCreate(RTDIR hDir, const char *pszSymlink, const char *pszTarget, + RTSYMLINKTYPE enmType, uint32_t fCreate) +{ + PRTDIRINTERNAL pThis = hDir; + AssertPtrReturn(pThis, VERR_INVALID_HANDLE); + AssertReturn(pThis->u32Magic == RTDIR_MAGIC, VERR_INVALID_HANDLE); + + char szPath[RTPATH_MAX]; + int rc = rtDirRelBuildFullPath(pThis, szPath, sizeof(szPath), pszSymlink); + if (RT_SUCCESS(rc)) + { +RTAssertMsg2("DBG: RTDirRelSymlinkCreate(%s)...\n", szPath); + rc = RTSymlinkCreate(szPath, pszTarget, enmType, fCreate); + } + return rc; +} + + +/** + * Read the symlink target relative to @a hDir. + * + * @returns IPRT status code. + * @retval VERR_NOT_SYMLINK if @a pszSymlink does not specify a symbolic link. + * @retval VERR_BUFFER_OVERFLOW if the link is larger than @a cbTarget. The + * buffer will contain what all we managed to read, fully terminated + * if @a cbTarget > 0. + * + * @param hDir The directory @a pszSymlink is relative to. + * @param pszSymlink The relative path to the symbolic link that should + * be read. + * @param pszTarget The target buffer. + * @param cbTarget The size of the target buffer. + * @param fRead Read flags, RTSYMLINKREAD_FLAGS_XXX. + * + * @sa RTSymlinkRead + */ +RTDECL(int) RTDirRelSymlinkRead(RTDIR hDir, const char *pszSymlink, char *pszTarget, size_t cbTarget, uint32_t fRead) +{ + PRTDIRINTERNAL pThis = hDir; + AssertPtrReturn(pThis, VERR_INVALID_HANDLE); + AssertReturn(pThis->u32Magic == RTDIR_MAGIC, VERR_INVALID_HANDLE); + + char szPath[RTPATH_MAX]; + int rc = rtDirRelBuildFullPath(pThis, szPath, sizeof(szPath), pszSymlink); + if (RT_SUCCESS(rc)) + { +RTAssertMsg2("DBG: RTDirRelSymlinkRead(%s)...\n", szPath); + rc = RTSymlinkRead(szPath, pszTarget, cbTarget, fRead); + } + return rc; +} + |