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Diffstat (limited to 'sal/osl/unx/file_stat.cxx')
| -rw-r--r-- | sal/osl/unx/file_stat.cxx | 453 |
1 files changed, 453 insertions, 0 deletions
diff --git a/sal/osl/unx/file_stat.cxx b/sal/osl/unx/file_stat.cxx new file mode 100644 index 000000000..3b702905c --- /dev/null +++ b/sal/osl/unx/file_stat.cxx @@ -0,0 +1,453 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#include <osl/file.h> + +#include "system.hxx" +#include <sys/types.h> +#include <dirent.h> +#include <errno.h> +#include <limits.h> +#include <unistd.h> + +#include <osl/diagnose.h> +#include <osl/thread.h> + +#include "file_impl.hxx" +#include "file_error_transl.hxx" +#include "file_path_helper.hxx" +#include "file_url.hxx" +#include "uunxapi.hxx" + +namespace +{ + void set_file_type(const struct stat& file_stat, oslFileStatus* pStat) + { + /* links to directories state also to be a directory */ + if (S_ISLNK(file_stat.st_mode)) + pStat->eType = osl_File_Type_Link; + else if (S_ISDIR(file_stat.st_mode)) + pStat->eType = osl_File_Type_Directory; + else if (S_ISREG(file_stat.st_mode)) + pStat->eType = osl_File_Type_Regular; + else if (S_ISFIFO(file_stat.st_mode)) + pStat->eType = osl_File_Type_Fifo; + else if (S_ISSOCK(file_stat.st_mode)) + pStat->eType = osl_File_Type_Socket; + else if (S_ISCHR(file_stat.st_mode) || S_ISBLK(file_stat.st_mode)) + pStat->eType = osl_File_Type_Special; + else + pStat->eType = osl_File_Type_Unknown; + + pStat->uValidFields |= osl_FileStatus_Mask_Type; + } + + void set_file_access_mask(const struct stat& file_stat, oslFileStatus* pStat) + { + // user permissions + if (S_IRUSR & file_stat.st_mode) + pStat->uAttributes |= osl_File_Attribute_OwnRead; + + if (S_IWUSR & file_stat.st_mode) + pStat->uAttributes |= osl_File_Attribute_OwnWrite; + + if (S_IXUSR & file_stat.st_mode) + pStat->uAttributes |= osl_File_Attribute_OwnExe; + + // group permissions + if (S_IRGRP & file_stat.st_mode) + pStat->uAttributes |= osl_File_Attribute_GrpRead; + + if (S_IWGRP & file_stat.st_mode) + pStat->uAttributes |= osl_File_Attribute_GrpWrite; + + if (S_IXGRP & file_stat.st_mode) + pStat->uAttributes |= osl_File_Attribute_GrpExe; + + // others permissions + if (S_IROTH & file_stat.st_mode) + pStat->uAttributes |= osl_File_Attribute_OthRead; + + if (S_IWOTH & file_stat.st_mode) + pStat->uAttributes |= osl_File_Attribute_OthWrite; + + if (S_IXOTH & file_stat.st_mode) + pStat->uAttributes |= osl_File_Attribute_OthExe; + + pStat->uValidFields |= osl_FileStatus_Mask_Attributes; + } + + /* This code used not to use access(...) because access follows links which + may cause performance problems see #97133. (That apparently references a + no-longer accessible Hamburg-internal bug-tracking system.) + However, contrary to what is stated above the use of access calls is + required on network file systems not using unix semantics (AFS, see + fdo#43095). + */ + void set_file_access_rights(const OString& file_path, oslFileStatus* pStat) + { + pStat->uValidFields |= osl_FileStatus_Mask_Attributes; + + if (osl::access(file_path, W_OK) < 0) + pStat->uAttributes |= osl_File_Attribute_ReadOnly; + + if (osl::access(file_path, X_OK) == 0) + pStat->uAttributes |= osl_File_Attribute_Executable; + } + + void set_file_hidden_status(const OString& file_path, oslFileStatus* pStat) + { + pStat->uAttributes = osl::systemPathIsHiddenFileOrDirectoryEntry(file_path) ? osl_File_Attribute_Hidden : 0; + pStat->uValidFields |= osl_FileStatus_Mask_Attributes; + } + + /* the set_file_access_rights must be called after set_file_hidden_status(...) and + set_file_access_mask(...) because of the hack in set_file_access_rights(...) */ + void set_file_attributes( + const OString& file_path, const struct stat& file_stat, const sal_uInt32 uFieldMask, oslFileStatus* pStat) + { + set_file_hidden_status(file_path, pStat); + set_file_access_mask(file_stat, pStat); + + // we set the file access rights only on demand + // because it's potentially expensive + if (uFieldMask & osl_FileStatus_Mask_Attributes) + set_file_access_rights(file_path, pStat); + } + + void set_file_access_time(const struct stat& file_stat, oslFileStatus* pStat) + { + pStat->aAccessTime.Seconds = file_stat.st_atime; + pStat->aAccessTime.Nanosec = 0; + pStat->uValidFields |= osl_FileStatus_Mask_AccessTime; + } + + void set_file_modify_time(const struct stat& file_stat, oslFileStatus* pStat) + { + pStat->aModifyTime.Seconds = file_stat.st_mtime; + pStat->aModifyTime.Nanosec = 0; + pStat->uValidFields |= osl_FileStatus_Mask_ModifyTime; + } + + void set_file_size(const struct stat& file_stat, oslFileStatus* pStat) + { + if (S_ISREG(file_stat.st_mode)) + { + pStat->uFileSize = file_stat.st_size; + pStat->uValidFields |= osl_FileStatus_Mask_FileSize; + } + } + + /* we only need to call stat or lstat if one of the + following flags is set */ + bool is_stat_call_necessary(sal_uInt32 field_mask, oslFileType file_type) + { + return ( + ((field_mask & osl_FileStatus_Mask_Type) && (file_type == osl_File_Type_Unknown)) || + (field_mask & osl_FileStatus_Mask_Attributes) || + (field_mask & osl_FileStatus_Mask_CreationTime) || + (field_mask & osl_FileStatus_Mask_AccessTime) || + (field_mask & osl_FileStatus_Mask_ModifyTime) || + (field_mask & osl_FileStatus_Mask_FileSize) || + (field_mask & osl_FileStatus_Mask_LinkTargetURL) || + (field_mask & osl_FileStatus_Mask_Validate)); + } + + oslFileError set_link_target_url(const OString& file_path, oslFileStatus* pStat) + { + OString link_target; + if (!osl::realpath(file_path, link_target)) + return oslTranslateFileError(errno); + + OUString url; + oslFileError osl_error = osl::detail::convertPathnameToUrl(link_target, &url); + if (osl_error != osl_File_E_None) + return osl_error; + rtl_uString_assign(&pStat->ustrLinkTargetURL, url.pData); + + pStat->uValidFields |= osl_FileStatus_Mask_LinkTargetURL; + return osl_File_E_None; + } + + oslFileError setup_osl_getFileStatus( + DirectoryItem_Impl * pImpl, oslFileStatus* pStat, OString& file_path) + { + if ((pImpl == nullptr) || (pStat == nullptr)) + return osl_File_E_INVAL; + + file_path = pImpl->m_strFilePath; + OSL_ASSERT(!file_path.isEmpty()); + if (file_path.isEmpty()) + return osl_File_E_INVAL; + + pStat->uValidFields = 0; + return osl_File_E_None; + } + +} + +oslFileError SAL_CALL osl_getFileStatus(oslDirectoryItem Item, oslFileStatus* pStat, sal_uInt32 uFieldMask) +{ + DirectoryItem_Impl * pImpl = static_cast< DirectoryItem_Impl* >(Item); + + OString file_path; + oslFileError osl_error = setup_osl_getFileStatus(pImpl, pStat, file_path); + if (osl_error != osl_File_E_None) + return osl_error; + + struct stat file_stat; + + bool bStatNeeded = is_stat_call_necessary(uFieldMask, pImpl->getFileType()); + if (bStatNeeded && (osl::lstat(file_path, file_stat) != 0)) + return oslTranslateFileError(errno); + + if (bStatNeeded) + { + // we set all these attributes because it's cheap + set_file_type(file_stat, pStat); + set_file_access_time(file_stat, pStat); + set_file_modify_time(file_stat, pStat); + set_file_size(file_stat, pStat); + set_file_attributes(file_path, file_stat, uFieldMask, pStat); + + // file exists semantic of osl_FileStatus_Mask_Validate + if ((uFieldMask & osl_FileStatus_Mask_LinkTargetURL) && S_ISLNK(file_stat.st_mode)) + { + osl_error = set_link_target_url(file_path, pStat); + if (osl_error != osl_File_E_None) + return osl_error; + } + } +#ifdef _DIRENT_HAVE_D_TYPE + else if (uFieldMask & osl_FileStatus_Mask_Type) + { + pStat->eType = pImpl->getFileType(); + pStat->uValidFields |= osl_FileStatus_Mask_Type; + } +#endif /* _DIRENT_HAVE_D_TYPE */ + + if (uFieldMask & osl_FileStatus_Mask_FileURL) + { + OUString url; + if ((osl_error = osl::detail::convertPathnameToUrl(file_path, &url)) != osl_File_E_None) + return osl_error; + rtl_uString_assign(&pStat->ustrFileURL, url.pData); + + pStat->uValidFields |= osl_FileStatus_Mask_FileURL; + } + + if (uFieldMask & osl_FileStatus_Mask_FileName) + { + OString name; + osl_systemPathGetFileNameOrLastDirectoryPart(file_path.pData, &name.pData); + bool ok = rtl_convertStringToUString( + &pStat->ustrFileName, name.getStr(), name.getLength(), osl_getThreadTextEncoding(), + (RTL_TEXTTOUNICODE_FLAGS_UNDEFINED_DEFAULT | RTL_TEXTTOUNICODE_FLAGS_MBUNDEFINED_DEFAULT + | RTL_TEXTTOUNICODE_FLAGS_INVALID_DEFAULT)); + assert(ok); (void)ok; + pStat->uValidFields |= osl_FileStatus_Mask_FileName; + } + return osl_File_E_None; +} + +static oslFileError osl_psz_setFileAttributes( const char* pszFilePath, sal_uInt64 uAttributes ) +{ + oslFileError osl_error = osl_File_E_None; + mode_t nNewMode = 0; + + OSL_ENSURE(!(osl_File_Attribute_Hidden & uAttributes), "osl_File_Attribute_Hidden doesn't work under Unix"); + + if (uAttributes & osl_File_Attribute_OwnRead) + nNewMode |= S_IRUSR; + + if (uAttributes & osl_File_Attribute_OwnWrite) + nNewMode|=S_IWUSR; + + if (uAttributes & osl_File_Attribute_OwnExe) + nNewMode|=S_IXUSR; + + if (uAttributes & osl_File_Attribute_GrpRead) + nNewMode|=S_IRGRP; + + if (uAttributes & osl_File_Attribute_GrpWrite) + nNewMode|=S_IWGRP; + + if (uAttributes & osl_File_Attribute_GrpExe) + nNewMode|=S_IXGRP; + + if (uAttributes & osl_File_Attribute_OthRead) + nNewMode|=S_IROTH; + + if (uAttributes & osl_File_Attribute_OthWrite) + nNewMode|=S_IWOTH; + + if (uAttributes & osl_File_Attribute_OthExe) + nNewMode|=S_IXOTH; + + if (chmod(pszFilePath, nNewMode) < 0) + osl_error = oslTranslateFileError(errno); + + return osl_error; +} + +oslFileError SAL_CALL osl_setFileAttributes( rtl_uString* ustrFileURL, sal_uInt64 uAttributes ) +{ + char path[PATH_MAX]; + oslFileError eRet; + + OSL_ASSERT( ustrFileURL ); + + /* convert file url to system path */ + eRet = FileURLToPath( path, PATH_MAX, ustrFileURL ); + if( eRet != osl_File_E_None ) + return eRet; + +#ifdef MACOSX + if ( macxp_resolveAlias( path, PATH_MAX ) != 0 ) + return oslTranslateFileError( errno ); +#endif/* MACOSX */ + + return osl_psz_setFileAttributes( path, uAttributes ); +} + +static oslFileError osl_psz_setFileTime ( + const char* pszFilePath, + const TimeValue* pLastAccessTime, + const TimeValue* pLastWriteTime ) +{ + int nRet=0; + struct utimbuf aTimeBuffer; + struct stat aFileStat; +#ifdef DEBUG_OSL_FILE + struct tm* pTM=0; +#endif + + nRet = lstat_c(pszFilePath,&aFileStat); + + if ( nRet < 0 ) + { + nRet=errno; + return oslTranslateFileError(nRet); + } + +#ifdef DEBUG_OSL_FILE + fprintf(stderr,"File Times are (in localtime):\n"); + pTM=localtime(&aFileStat.st_ctime); + fprintf(stderr,"CreationTime is '%s'\n",asctime(pTM)); + pTM=localtime(&aFileStat.st_atime); + fprintf(stderr,"AccessTime is '%s'\n",asctime(pTM)); + pTM=localtime(&aFileStat.st_mtime); + fprintf(stderr,"Modification is '%s'\n",asctime(pTM)); + + fprintf(stderr,"File Times are (in UTC):\n"); + fprintf(stderr,"CreationTime is '%s'\n",ctime(&aFileStat.st_ctime)); + fprintf(stderr,"AccessTime is '%s'\n",ctime(&aTimeBuffer.actime)); + fprintf(stderr,"Modification is '%s'\n",ctime(&aTimeBuffer.modtime)); +#endif + + if ( pLastAccessTime != nullptr ) + { + aTimeBuffer.actime=pLastAccessTime->Seconds; + } + else + { + aTimeBuffer.actime=aFileStat.st_atime; + } + + if ( pLastWriteTime != nullptr ) + { + aTimeBuffer.modtime=pLastWriteTime->Seconds; + } + else + { + aTimeBuffer.modtime=aFileStat.st_mtime; + } + + /* mfe: Creation time not used here! */ + +#ifdef DEBUG_OSL_FILE + fprintf(stderr,"File Times are (in localtime):\n"); + pTM=localtime(&aFileStat.st_ctime); + fprintf(stderr,"CreationTime now '%s'\n",asctime(pTM)); + pTM=localtime(&aTimeBuffer.actime); + fprintf(stderr,"AccessTime now '%s'\n",asctime(pTM)); + pTM=localtime(&aTimeBuffer.modtime); + fprintf(stderr,"Modification now '%s'\n",asctime(pTM)); + + fprintf(stderr,"File Times are (in UTC):\n"); + fprintf(stderr,"CreationTime now '%s'\n",ctime(&aFileStat.st_ctime)); + fprintf(stderr,"AccessTime now '%s'\n",ctime(&aTimeBuffer.actime)); + fprintf(stderr,"Modification now '%s'\n",ctime(&aTimeBuffer.modtime)); +#endif + + nRet = utime_c(pszFilePath,&aTimeBuffer); + if ( nRet < 0 ) + { + nRet=errno; + return oslTranslateFileError(nRet); + } + + return osl_File_E_None; +} + +oslFileError SAL_CALL osl_setFileTime ( + rtl_uString* ustrFileURL, + SAL_UNUSED_PARAMETER const TimeValue* /* pCreationTime */, + const TimeValue* pLastAccessTime, + const TimeValue* pLastWriteTime ) +{ + char path[PATH_MAX]; + oslFileError eRet; + + OSL_ASSERT( ustrFileURL ); + + /* convert file url to system path */ + eRet = FileURLToPath( path, PATH_MAX, ustrFileURL ); + if( eRet != osl_File_E_None ) + return eRet; + +#ifdef MACOSX + if ( macxp_resolveAlias( path, PATH_MAX ) != 0 ) + return oslTranslateFileError( errno ); +#endif/* MACOSX */ + + return osl_psz_setFileTime( path, pLastAccessTime, pLastWriteTime ); +} + +sal_Bool +SAL_CALL osl_identicalDirectoryItem( oslDirectoryItem a, oslDirectoryItem b) +{ + DirectoryItem_Impl *pA = static_cast<DirectoryItem_Impl *>(a); + DirectoryItem_Impl *pB = static_cast<DirectoryItem_Impl *>(b); + if (a == b) + return true; + /* same name => same item, unless renaming / moving madness has occurred */ + if (pA->m_strFilePath == pB->m_strFilePath) + return true; + + struct stat a_stat, b_stat; + + if (osl::lstat(pA->m_strFilePath, a_stat) != 0 || + osl::lstat(pB->m_strFilePath, b_stat) != 0) + return false; + + return (a_stat.st_ino == b_stat.st_ino); +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |