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|
/* -*- 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.hxx"
#include "osl/detail/file.h"
#include "osl/diagnose.h"
#include "osl/thread.h"
#include <osl/signal.h>
#include "rtl/alloc.h"
#include <rtl/string.hxx>
#include "system.hxx"
#include "file_impl.hxx"
#include "file_error_transl.hxx"
#include "file_path_helper.hxx"
#include "file_url.hxx"
#include "uunxapi.hxx"
#include "readwrite_helper.hxx"
#include <sys/types.h>
#include <errno.h>
#include <dirent.h>
#include <limits.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <algorithm>
#ifdef ANDROID
#include <osl/detail/android-bootstrap.h>
#endif
/************************************************************************
* TODO
*
* - Fix: check for corresponding struct sizes in exported functions
* - check size/use of oslDirectory
* - check size/use of oslDirectoryItem
***********************************************************************/
typedef struct
{
rtl_uString* ustrPath; /* holds native directory path */
DIR* pDirStruct;
#ifdef ANDROID
enum Kind
{
KIND_DIRENT = 1,
KIND_ASSETS = 2
};
int eKind;
lo_apk_dir* pApkDirStruct;
#endif
} oslDirectoryImpl;
DirectoryItem_Impl::DirectoryItem_Impl(
rtl_uString * ustrFilePath, unsigned char DType)
: m_RefCount (1),
m_ustrFilePath (ustrFilePath),
m_DType (DType)
{
if (m_ustrFilePath != nullptr)
rtl_uString_acquire(m_ustrFilePath);
}
DirectoryItem_Impl::~DirectoryItem_Impl()
{
if (m_ustrFilePath != nullptr)
rtl_uString_release(m_ustrFilePath);
}
void * DirectoryItem_Impl::operator new(size_t n)
{
return rtl_allocateMemory(n);
}
void DirectoryItem_Impl::operator delete(void * p)
{
rtl_freeMemory(p);
}
void DirectoryItem_Impl::acquire()
{
++m_RefCount;
}
void DirectoryItem_Impl::release()
{
if (--m_RefCount == 0)
delete this;
}
oslFileType DirectoryItem_Impl::getFileType() const
{
switch (m_DType)
{
#ifdef _DIRENT_HAVE_D_TYPE
case DT_LNK:
return osl_File_Type_Link;
case DT_DIR:
return osl_File_Type_Directory;
case DT_REG:
return osl_File_Type_Regular;
case DT_FIFO:
return osl_File_Type_Fifo;
case DT_SOCK:
return osl_File_Type_Socket;
case DT_CHR:
case DT_BLK:
return osl_File_Type_Special;
#endif /* _DIRENT_HAVE_D_TYPE */
default:
break;
}
return osl_File_Type_Unknown;
}
static oslFileError osl_psz_createDirectory(
char const * pszPath, sal_uInt32 flags);
static oslFileError osl_psz_removeDirectory(const sal_Char* pszPath);
oslFileError SAL_CALL osl_openDirectory(rtl_uString* ustrDirectoryURL, oslDirectory* pDirectory)
{
rtl_uString* ustrSystemPath = nullptr;
oslFileError eRet;
char path[PATH_MAX];
if ((nullptr == ustrDirectoryURL) || (ustrDirectoryURL->length == 0) || (nullptr == pDirectory))
return osl_File_E_INVAL;
/* convert file URL to system path */
eRet = osl_getSystemPathFromFileURL_Ex(ustrDirectoryURL, &ustrSystemPath);
if( eRet != osl_File_E_None )
return eRet;
osl_systemPathRemoveSeparator(ustrSystemPath);
/* convert unicode path to text */
if ( UnicodeToText( path, PATH_MAX, ustrSystemPath->buffer, ustrSystemPath->length )
#ifdef MACOSX
&& macxp_resolveAlias( path, PATH_MAX ) == 0
#endif /* MACOSX */
)
{
#ifdef ANDROID
if( strncmp( path, "/assets/", sizeof( "/assets/" ) - 1) == 0 )
{
lo_apk_dir *pdir = lo_apk_opendir( path );
if( pdir )
{
oslDirectoryImpl* pDirImpl = (oslDirectoryImpl*) rtl_allocateMemory( sizeof(oslDirectoryImpl) );
if( pDirImpl )
{
pDirImpl->eKind = oslDirectoryImpl::KIND_ASSETS;
pDirImpl->pApkDirStruct = pdir;
pDirImpl->ustrPath = ustrSystemPath;
*pDirectory = (oslDirectory) pDirImpl;
return osl_File_E_None;
}
else
{
errno = ENOMEM;
lo_apk_closedir( pdir );
}
}
}
else
#endif
{
/* open directory */
DIR *pdir = opendir( path );
if( pdir )
{
/* create and initialize impl structure */
oslDirectoryImpl* pDirImpl = static_cast<oslDirectoryImpl*>(rtl_allocateMemory( sizeof(oslDirectoryImpl) ));
if( pDirImpl )
{
pDirImpl->pDirStruct = pdir;
pDirImpl->ustrPath = ustrSystemPath;
#ifdef ANDROID
pDirImpl->eKind = oslDirectoryImpl::KIND_DIRENT;
#endif
*pDirectory = static_cast<oslDirectory>(pDirImpl);
return osl_File_E_None;
}
else
{
errno = ENOMEM;
closedir( pdir );
}
}
else
{
#ifdef DEBUG_OSL_FILE
perror ("osl_openDirectory"); fprintf (stderr, path);
#endif
}
}
}
rtl_uString_release( ustrSystemPath );
return oslTranslateFileError(OSL_FET_ERROR, errno);
}
oslFileError SAL_CALL osl_closeDirectory( oslDirectory Directory )
{
oslDirectoryImpl* pDirImpl = static_cast<oslDirectoryImpl*>(Directory);
oslFileError err = osl_File_E_None;
OSL_ASSERT( Directory );
if( nullptr == pDirImpl )
return osl_File_E_INVAL;
#ifdef ANDROID
if( pDirImpl->eKind == oslDirectoryImpl::KIND_ASSETS )
{
if (lo_apk_closedir( pDirImpl->pApkDirStruct ))
err = osl_File_E_IO;
}
else
#endif
{
if( closedir( pDirImpl->pDirStruct ) )
err = oslTranslateFileError(OSL_FET_ERROR, errno);
}
/* cleanup members */
rtl_uString_release( pDirImpl->ustrPath );
rtl_freeMemory( pDirImpl );
return err;
}
/**********************************************
* osl_readdir_impl_
*
* readdir wrapper, filters out "." and ".."
* on request
*********************************************/
static struct dirent* osl_readdir_impl_(DIR* pdir, bool bFilterLocalAndParentDir)
{
struct dirent* pdirent;
while ((pdirent = readdir(pdir)) != nullptr)
{
if (bFilterLocalAndParentDir &&
((strcmp(pdirent->d_name, ".") == 0) || (strcmp(pdirent->d_name, "..") == 0)))
continue;
else
break;
}
return pdirent;
}
oslFileError SAL_CALL osl_getNextDirectoryItem(oslDirectory Directory, oslDirectoryItem* pItem, SAL_UNUSED_PARAMETER sal_uInt32 /*uHint*/)
{
oslDirectoryImpl* pDirImpl = static_cast<oslDirectoryImpl*>(Directory);
rtl_uString* ustrFileName = nullptr;
rtl_uString* ustrFilePath = nullptr;
struct dirent* pEntry;
OSL_ASSERT(Directory);
OSL_ASSERT(pItem);
if ((nullptr == Directory) || (nullptr == pItem))
return osl_File_E_INVAL;
#ifdef ANDROID
if( pDirImpl->eKind == oslDirectoryImpl::KIND_ASSETS )
{
pEntry = lo_apk_readdir(pDirImpl->pApkDirStruct);
}
else
#endif
{
pEntry = osl_readdir_impl_(pDirImpl->pDirStruct, true);
}
if (nullptr == pEntry)
return osl_File_E_NOENT;
#if defined(MACOSX)
// convert decomposed filename to precomposed unicode
char composed_name[BUFSIZ];
CFMutableStringRef strRef = CFStringCreateMutable (nullptr, 0 );
CFStringAppendCString( strRef, pEntry->d_name, kCFStringEncodingUTF8 ); //UTF8 is default on Mac OSX
CFStringNormalize( strRef, kCFStringNormalizationFormC );
CFStringGetCString( strRef, composed_name, BUFSIZ, kCFStringEncodingUTF8 );
CFRelease( strRef );
rtl_string2UString( &ustrFileName, composed_name, strlen( composed_name),
osl_getThreadTextEncoding(), OSTRING_TO_OUSTRING_CVTFLAGS );
#else // not MACOSX
/* convert file name to unicode */
rtl_string2UString( &ustrFileName, pEntry->d_name, strlen( pEntry->d_name ),
osl_getThreadTextEncoding(), OSTRING_TO_OUSTRING_CVTFLAGS );
OSL_ASSERT(ustrFileName != nullptr);
#endif
osl_systemPathMakeAbsolutePath(pDirImpl->ustrPath, ustrFileName, &ustrFilePath);
rtl_uString_release( ustrFileName );
DirectoryItem_Impl * pImpl = static_cast< DirectoryItem_Impl* >(*pItem);
if (nullptr != pImpl)
{
pImpl->release();
pImpl = nullptr;
}
#ifdef _DIRENT_HAVE_D_TYPE
pImpl = new DirectoryItem_Impl(ustrFilePath, pEntry->d_type);
#else
pImpl = new DirectoryItem_Impl(ustrFilePath);
#endif /* _DIRENT_HAVE_D_TYPE */
*pItem = pImpl;
rtl_uString_release( ustrFilePath );
return osl_File_E_None;
}
oslFileError SAL_CALL osl_getDirectoryItem( rtl_uString* ustrFileURL, oslDirectoryItem* pItem )
{
rtl_uString* ustrSystemPath = nullptr;
oslFileError osl_error = osl_File_E_INVAL;
OSL_ASSERT((nullptr != ustrFileURL) && (nullptr != pItem));
if ((nullptr == ustrFileURL) || (ustrFileURL->length == 0) || (nullptr == pItem))
return osl_File_E_INVAL;
osl_error = osl_getSystemPathFromFileURL_Ex(ustrFileURL, &ustrSystemPath);
if (osl_error != osl_File_E_None)
return osl_error;
osl_systemPathRemoveSeparator(ustrSystemPath);
if (access_u(ustrSystemPath, F_OK) == -1)
{
osl_error = oslTranslateFileError(OSL_FET_ERROR, errno);
}
else
{
*pItem = new DirectoryItem_Impl(ustrSystemPath);
}
rtl_uString_release(ustrSystemPath);
return osl_error;
}
oslFileError SAL_CALL osl_acquireDirectoryItem( oslDirectoryItem Item )
{
DirectoryItem_Impl * pImpl = static_cast< DirectoryItem_Impl* >(Item);
if (nullptr == pImpl)
return osl_File_E_INVAL;
pImpl->acquire();
return osl_File_E_None;
}
oslFileError SAL_CALL osl_releaseDirectoryItem( oslDirectoryItem Item )
{
DirectoryItem_Impl * pImpl = static_cast< DirectoryItem_Impl* >(Item);
if (nullptr == pImpl)
return osl_File_E_INVAL;
pImpl->release();
return osl_File_E_None;
}
oslFileError SAL_CALL osl_createDirectory( rtl_uString* ustrDirectoryURL )
{
return osl_createDirectoryWithFlags(
ustrDirectoryURL, osl_File_OpenFlag_Read | osl_File_OpenFlag_Write);
}
oslFileError osl_createDirectoryWithFlags(
rtl_uString * ustrDirectoryURL, sal_uInt32 flags)
{
char path[PATH_MAX];
oslFileError eRet;
OSL_ASSERT( ustrDirectoryURL );
/* convert directory url to system path */
eRet = FileURLToPath( path, PATH_MAX, ustrDirectoryURL );
if( eRet != osl_File_E_None )
return eRet;
#ifdef MACOSX
if ( macxp_resolveAlias( path, PATH_MAX ) != 0 )
return oslTranslateFileError( OSL_FET_ERROR, errno );
#endif/* MACOSX */
return osl_psz_createDirectory( path, flags );
}
oslFileError SAL_CALL osl_removeDirectory( rtl_uString* ustrDirectoryURL )
{
char path[PATH_MAX];
oslFileError eRet;
OSL_ASSERT( ustrDirectoryURL );
/* convert directory url to system path */
eRet = FileURLToPath( path, PATH_MAX, ustrDirectoryURL );
if( eRet != osl_File_E_None )
return eRet;
#ifdef MACOSX
if ( macxp_resolveAlias( path, PATH_MAX ) != 0 )
return oslTranslateFileError( OSL_FET_ERROR, errno );
#endif/* MACOSX */
return osl_psz_removeDirectory( path );
}
oslFileError osl_psz_createDirectory(char const * pszPath, sal_uInt32 flags)
{
int nRet=0;
int mode
= (((flags & osl_File_OpenFlag_Read) == 0
? 0
: ((flags & osl_File_OpenFlag_Private) == 0
? S_IRUSR | S_IXUSR | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH
: S_IRUSR | S_IXUSR))
| ((flags & osl_File_OpenFlag_Write) == 0
? 0
: ((flags & osl_File_OpenFlag_Private) == 0
? S_IWUSR | S_IWGRP | S_IWOTH
: S_IWUSR)));
nRet = mkdir(pszPath,mode);
if ( nRet < 0 )
{
nRet=errno;
return oslTranslateFileError(OSL_FET_ERROR, nRet);
}
return osl_File_E_None;
}
static oslFileError osl_psz_removeDirectory( const sal_Char* pszPath )
{
int nRet=0;
nRet = rmdir(pszPath);
if ( nRet < 0 )
{
nRet=errno;
return oslTranslateFileError(OSL_FET_ERROR, nRet);
}
return osl_File_E_None;
}
static int path_make_parent(sal_Unicode* path)
{
int i = rtl_ustr_lastIndexOfChar(path, '/');
if (i > 0)
{
*(path + i) = 0;
return i;
}
else
return 0;
}
static int create_dir_with_callback(
sal_Unicode* directory_path,
oslDirectoryCreationCallbackFunc aDirectoryCreationCallbackFunc,
void* pData)
{
int mode = S_IRWXU | S_IRWXG | S_IRWXO;
if (osl::mkdir(directory_path, mode) == 0)
{
if (aDirectoryCreationCallbackFunc)
{
rtl::OUString url;
osl::FileBase::getFileURLFromSystemPath(directory_path, url);
aDirectoryCreationCallbackFunc(pData, url.pData);
}
return 0;
}
return errno;
}
static oslFileError create_dir_recursively_(
sal_Unicode* dir_path,
oslDirectoryCreationCallbackFunc aDirectoryCreationCallbackFunc,
void* pData)
{
OSL_PRECOND((rtl_ustr_getLength(dir_path) > 0) && ((dir_path + (rtl_ustr_getLength(dir_path) - 1)) != (dir_path + rtl_ustr_lastIndexOfChar(dir_path, '/'))),
"Path must not end with a slash");
int native_err = create_dir_with_callback(
dir_path, aDirectoryCreationCallbackFunc, pData);
if (native_err == 0)
return osl_File_E_None;
if (native_err != ENOENT)
return oslTranslateFileError(OSL_FET_ERROR, native_err);
// we step back until '/a_dir' at maximum because
// we should get an error unequal ENOENT when
// we try to create 'a_dir' at '/' and would so
// return before
int pos = path_make_parent(dir_path);
oslFileError osl_error = create_dir_recursively_(
dir_path, aDirectoryCreationCallbackFunc, pData);
if (osl_error != osl_File_E_None)
return osl_error;
dir_path[pos] = '/';
return create_dir_recursively_(dir_path, aDirectoryCreationCallbackFunc, pData);
}
oslFileError SAL_CALL osl_createDirectoryPath(
rtl_uString* aDirectoryUrl,
oslDirectoryCreationCallbackFunc aDirectoryCreationCallbackFunc,
void* pData)
{
if (aDirectoryUrl == nullptr)
return osl_File_E_INVAL;
rtl::OUString sys_path;
oslFileError osl_error = osl_getSystemPathFromFileURL_Ex(aDirectoryUrl, &sys_path.pData);
if (osl_error != osl_File_E_None)
return osl_error;
osl::systemPathRemoveSeparator(sys_path);
// const_cast because sys_path is a local copy which we want to modify inplace instead of
// copy it into another buffer on the heap again
return create_dir_recursively_(sys_path.pData->buffer, aDirectoryCreationCallbackFunc, pData);
}
static oslFileError osl_psz_removeFile(const sal_Char* pszPath);
static oslFileError osl_psz_copyFile(const sal_Char* pszPath, const sal_Char* pszDestPath, bool preserveMetadata);
static oslFileError osl_psz_moveFile(const sal_Char* pszPath, const sal_Char* pszDestPath);
static oslFileError oslDoCopy(const sal_Char* pszSourceFileName, const sal_Char* pszDestFileName, mode_t nMode, size_t nSourceSize, int DestFileExists);
static void attemptChangeMetadata(const sal_Char* pszFileName, mode_t nMode, time_t nAcTime, time_t nModTime, uid_t nUID, gid_t nGID);
static int oslDoCopyLink(const sal_Char* pszSourceFileName, const sal_Char* pszDestFileName);
static int oslDoCopyFile(const sal_Char* pszSourceFileName, const sal_Char* pszDestFileName, size_t nSourceSize, mode_t mode);
static oslFileError oslDoMoveFile(const sal_Char* pszPath, const sal_Char* pszDestPath);
oslFileError SAL_CALL osl_moveFile( rtl_uString* ustrFileURL, rtl_uString* ustrDestURL )
{
char srcPath[PATH_MAX];
char destPath[PATH_MAX];
oslFileError eRet;
OSL_ASSERT( ustrFileURL );
OSL_ASSERT( ustrDestURL );
/* convert source url to system path */
eRet = FileURLToPath( srcPath, PATH_MAX, ustrFileURL );
if( eRet != osl_File_E_None )
return eRet;
/* convert destination url to system path */
eRet = FileURLToPath( destPath, PATH_MAX, ustrDestURL );
if( eRet != osl_File_E_None )
return eRet;
#ifdef MACOSX
if ( macxp_resolveAlias( srcPath, PATH_MAX ) != 0 || macxp_resolveAlias( destPath, PATH_MAX ) != 0 )
return oslTranslateFileError( OSL_FET_ERROR, errno );
#endif/* MACOSX */
return oslDoMoveFile( srcPath, destPath );
}
oslFileError SAL_CALL osl_copyFile( rtl_uString* ustrFileURL, rtl_uString* ustrDestURL )
{
char srcPath[PATH_MAX];
char destPath[PATH_MAX];
oslFileError eRet;
OSL_ASSERT( ustrFileURL );
OSL_ASSERT( ustrDestURL );
/* convert source url to system path */
eRet = FileURLToPath( srcPath, PATH_MAX, ustrFileURL );
if( eRet != osl_File_E_None )
return eRet;
/* convert destination url to system path */
eRet = FileURLToPath( destPath, PATH_MAX, ustrDestURL );
if( eRet != osl_File_E_None )
return eRet;
#ifdef MACOSX
if ( macxp_resolveAlias( srcPath, PATH_MAX ) != 0 || macxp_resolveAlias( destPath, PATH_MAX ) != 0 )
return oslTranslateFileError( OSL_FET_ERROR, errno );
#endif/* MACOSX */
return osl_psz_copyFile( srcPath, destPath, false );
}
oslFileError SAL_CALL osl_removeFile( rtl_uString* ustrFileURL )
{
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( OSL_FET_ERROR, errno );
#endif/* MACOSX */
return osl_psz_removeFile( path );
}
static oslFileError oslDoMoveFile( const sal_Char* pszPath, const sal_Char* pszDestPath)
{
oslFileError tErr = osl_psz_moveFile(pszPath,pszDestPath);
if ( tErr == osl_File_E_None )
{
return tErr;
}
if ( tErr != osl_File_E_XDEV )
{
return tErr;
}
tErr=osl_psz_copyFile(pszPath,pszDestPath, true);
if ( tErr != osl_File_E_None )
{
osl_psz_removeFile(pszDestPath);
return tErr;
}
tErr=osl_psz_removeFile(pszPath);
return tErr;
}
static oslFileError osl_psz_removeFile( const sal_Char* pszPath )
{
int nRet=0;
struct stat aStat;
nRet = lstat_c(pszPath,&aStat);
if ( nRet < 0 )
{
nRet=errno;
return oslTranslateFileError(OSL_FET_ERROR, nRet);
}
if ( S_ISDIR(aStat.st_mode) )
{
return osl_File_E_ISDIR;
}
nRet = unlink(pszPath);
if ( nRet < 0 )
{
nRet=errno;
return oslTranslateFileError(OSL_FET_ERROR, nRet);
}
return osl_File_E_None;
}
static oslFileError osl_psz_moveFile(const sal_Char* pszPath, const sal_Char* pszDestPath)
{
int nRet = 0;
nRet = rename(pszPath,pszDestPath);
if ( nRet < 0 )
{
nRet=errno;
return oslTranslateFileError(OSL_FET_ERROR, nRet);
}
return osl_File_E_None;
}
static oslFileError osl_psz_copyFile( const sal_Char* pszPath, const sal_Char* pszDestPath, bool preserveMetadata )
{
time_t nAcTime=0;
time_t nModTime=0;
uid_t nUID=0;
gid_t nGID=0;
int nRet=0;
mode_t nMode=0;
struct stat aFileStat;
oslFileError tErr=osl_File_E_invalidError;
size_t nSourceSize=0;
int DestFileExists=1;
/* mfe: does the source file really exists? */
nRet = lstat_c(pszPath,&aFileStat);
if ( nRet < 0 )
{
nRet=errno;
return oslTranslateFileError(OSL_FET_ERROR, nRet);
}
/* mfe: we do only copy files here! */
if ( S_ISDIR(aFileStat.st_mode) )
{
return osl_File_E_ISDIR;
}
nSourceSize=(size_t)aFileStat.st_size;
nMode=aFileStat.st_mode;
nAcTime=aFileStat.st_atime;
nModTime=aFileStat.st_mtime;
nUID=aFileStat.st_uid;
nGID=aFileStat.st_gid;
nRet = stat_c(pszDestPath,&aFileStat);
if ( nRet < 0 )
{
nRet=errno;
if ( nRet == ENOENT )
{
DestFileExists=0;
}
}
/* mfe: the destination file must not be a directory! */
if ( nRet == 0 && S_ISDIR(aFileStat.st_mode) )
{
return osl_File_E_ISDIR;
}
else
{
/* mfe: file does not exists or is no dir */
}
tErr = oslDoCopy(pszPath,pszDestPath,nMode,nSourceSize,DestFileExists);
if ( tErr != osl_File_E_None )
{
return tErr;
}
if (preserveMetadata)
{
attemptChangeMetadata(pszDestPath,nMode,nAcTime,nModTime,nUID,nGID);
}
return tErr;
}
static oslFileError oslDoCopy(const sal_Char* pszSourceFileName, const sal_Char* pszDestFileName, mode_t nMode, size_t nSourceSize, int DestFileExists)
{
int nRet=0;
rtl::OString tmpDestFile;
if ( DestFileExists )
{
//TODO: better pick a temp file name instead of adding .osl-tmp:
// use the destination file to avoid EXDEV /* Cross-device link */
tmpDestFile = rtl::OString(pszDestFileName) + ".osl-tmp";
if (rename(pszDestFileName, tmpDestFile.getStr()) != 0)
{
if (errno == ENOENT)
{
DestFileExists = 0;
}
else
{
int e = errno;
SAL_INFO(
"sal.osl",
"rename(" << pszDestFileName << ", " << tmpDestFile
<< ") failed with errno " << e);
return osl_File_E_EXIST; // for want of a better error code
}
}
}
/* mfe: should be S_ISREG */
if ( !S_ISLNK(nMode) )
{
/* copy SourceFile to DestFile */
nRet = oslDoCopyFile(pszSourceFileName,pszDestFileName,nSourceSize, nMode);
}
/* mfe: OK redundant at the moment */
else if ( S_ISLNK(nMode) )
{
nRet = oslDoCopyLink(pszSourceFileName,pszDestFileName);
}
else
{
/* mfe: what to do here? */
nRet=ENOSYS;
}
if ( nRet > 0 && DestFileExists == 1 )
{
unlink(pszDestFileName);
if (rename(tmpDestFile.getStr(), pszDestFileName) != 0)
{
int e = errno;
SAL_WARN(
"sal.osl",
"rename(" << tmpDestFile << ", " << pszDestFileName
<< ") failed with errno " << e);
}
}
if ( nRet > 0 )
{
return oslTranslateFileError(OSL_FET_ERROR, nRet);
}
if ( DestFileExists == 1 )
{
unlink(tmpDestFile.getStr());
}
return osl_File_E_None;
}
void attemptChangeMetadata( const sal_Char* pszFileName, mode_t nMode, time_t nAcTime, time_t nModTime, uid_t nUID, gid_t nGID)
{
struct utimbuf aTimeBuffer;
#if !defined AT_FDCWD
if (!S_ISLNK(nMode) && chmod(pszFileName, nMode) < 0)
#else
if ( fchmodat(AT_FDCWD, pszFileName, nMode, AT_SYMLINK_NOFOLLOW) < 0 )
#endif
{
int e = errno;
SAL_INFO(
"sal.osl", "chmod(" << pszFileName << ") failed with errno " << e);
}
// No way to change utime of a symlink itself:
if (!S_ISLNK(nMode))
{
aTimeBuffer.actime=nAcTime;
aTimeBuffer.modtime=nModTime;
if ( utime(pszFileName,&aTimeBuffer) < 0 )
{
int e = errno;
SAL_INFO(
"sal.osl",
"utime(" << pszFileName << ") failed with errno " << e);
}
}
if ( nUID != getuid() )
{
nUID=getuid();
}
if ( lchown(pszFileName,nUID,nGID) < 0 )
{
int e = errno;
SAL_INFO(
"sal.osl", "lchown(" << pszFileName << ") failed with errno " << e);
}
}
static int oslDoCopyLink(const sal_Char* pszSourceFileName, const sal_Char* pszDestFileName)
{
int nRet=0;
/* mfe: if dest file is symbolic link remove the link and place the file instead (hro says so) */
/* mfe: if source is a link copy the link and not the file it points to (hro says so) */
sal_Char pszLinkContent[PATH_MAX+1];
pszLinkContent[0] = '\0';
nRet = readlink(pszSourceFileName,pszLinkContent,PATH_MAX);
if ( nRet < 0 )
{
nRet=errno;
return nRet;
}
else
pszLinkContent[ nRet ] = 0;
nRet = symlink(pszLinkContent,pszDestFileName);
if ( nRet < 0 )
{
nRet=errno;
return nRet;
}
return 0;
}
static int oslDoCopyFile(const sal_Char* pszSourceFileName, const sal_Char* pszDestFileName, size_t nSourceSize, mode_t mode)
{
oslFileHandle SourceFileFH=nullptr;
int DestFileFD=0;
int nRet=0;
if (openFilePath(pszSourceFileName,
&SourceFileFH,
osl_File_OpenFlag_Read|osl_File_OpenFlag_NoLock|osl_File_OpenFlag_NoExcl, mode_t(-1)) != osl_File_E_None)
{
// Let's hope errno is still set relevantly after openFilePath...
nRet=errno;
return nRet;
}
DestFileFD=open(pszDestFileName, O_WRONLY | O_CREAT, mode);
if ( DestFileFD < 0 )
{
nRet=errno;
osl_closeFile(SourceFileFH);
return nRet;
}
size_t nRemains = nSourceSize;
if ( nRemains )
{
/* mmap has problems, try the direct streaming */
char pBuffer[0x7FFF];
do
{
size_t nToRead = std::min( sizeof(pBuffer), nRemains );
sal_uInt64 nRead;
bool succeeded;
if ( osl_readFile( SourceFileFH, pBuffer, nToRead, &nRead ) != osl_File_E_None || nRead > nToRead || nRead == 0 )
break;
succeeded = safeWrite( DestFileFD, pBuffer, nRead );
if ( !succeeded )
break;
// We know nRead <= nToRead, so it must fit in a size_t
nRemains -= (size_t) nRead;
}
while( nRemains );
}
if ( nRemains )
{
if ( errno )
nRet = errno;
else
nRet = ENOSPC;
}
osl_closeFile( SourceFileFH );
if ( close( DestFileFD ) == -1 && nRet == 0 )
nRet = errno;
return nRet;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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