author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Thu, 01 Apr 2010 00:15:09 +0300 | |
branch | RCL_3 |
changeset 15 | 18da5738c9b6 |
parent 0 | e4d67989cc36 |
child 45 | 4b03adbd26ca |
permissions | -rw-r--r-- |
0
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/* |
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* Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: Implementation of link/symlink. |
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* |
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*/ |
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|
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// INCLUDE FILES |
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#include <sys/errno.h> |
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#include <sys/types.h> |
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#include <wchar.h> |
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#include <string.h> |
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#include <unistd.h> |
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#include "lposix.h" |
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#include <sys/stat.h> |
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#include <sys/limits.h> |
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#include "sysreent.h" |
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#include <stdlib.h> |
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#include "sysif.h" |
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#include "systemspecialfilercg.h" |
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#include "link.h" |
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|
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// ----------------------------------------------------------------------------- |
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// Funcation name: link |
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// Description: Provides link functionality. |
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// Returns: 0 : On success |
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// -1 : On error |
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// In case of error, errno value set |
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// Remark: This is a simulated functionality and not supported by the platform |
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// ----------------------------------------------------------------------------- |
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// |
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|
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extern "C" { |
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#define MAXPATHLEN 260 /* E32STD.H: KMaxFullName + 4 to avoid data loss */ |
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EXPORT_C int link(const char *oldpath, const char *newpath) |
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{ |
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wchar_t _oldwidename[MAXPATHLEN+1]; |
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wchar_t _newwidename[MAXPATHLEN+1]; |
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if ((size_t)-1 != mbstowcs(_oldwidename, oldpath, MAXPATHLEN) && \ |
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(size_t)-1 != mbstowcs(_newwidename, newpath, MAXPATHLEN)) |
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{ |
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return _link_r(&errno, _oldwidename, _newwidename); |
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} |
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errno = EILSEQ; |
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return -1; |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// Funcation name: symlink |
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// Description: Provides symlink functionality which is exactly similar to link |
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// in our case. |
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// Returns: ssize_t : On success |
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// -1 : On error |
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// In case of error, errno value set |
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// |
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// ----------------------------------------------------------------------------- |
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// |
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EXPORT_C int symlink(const char *oldpath, const char *newpath) |
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{ |
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wchar_t _oldwidename[MAXPATHLEN+1]; |
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wchar_t _newwidename[MAXPATHLEN+1]; |
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if ((size_t)-1 != mbstowcs(_oldwidename, oldpath, MAXPATHLEN) && \ |
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(size_t)-1 != mbstowcs(_newwidename, newpath, MAXPATHLEN)) |
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{ |
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return _link_r(&errno, _oldwidename, _newwidename); |
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} |
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errno = EILSEQ; |
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return -1; |
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} |
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// ----------------------------------------------------------------------------- |
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// Funcation name: readlink |
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// Description: Reads the link file. |
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// Returns: ssize_t : On success |
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// -1 : On error |
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// In case of error, errno value set |
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// |
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// ----------------------------------------------------------------------------- |
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// |
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EXPORT_C ssize_t readlink(const char *path, char *buf, int bufsize) |
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{ |
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TSpecialFileType fileType; |
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struct SLinkInfo enBuf; |
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int err = KErrNone; |
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char name[MAXPATHLEN+1]; |
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wchar_t widename[MAXPATHLEN+1]; |
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106 |
|
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if(path) |
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108 |
{ |
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if ((size_t)-1 != mbstowcs(widename, path, MAXPATHLEN)) |
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110 |
{ |
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/*Special file identification and read of IPC is utilized here*/ |
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if( (fileType = _SystemSpecialFileBasedFilePath(widename, err, Backend()->FileSession())) == EFileTypeSymLink) |
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113 |
{ |
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if (err) |
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115 |
{ |
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return MapError(err, errno); |
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} |
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err = _ReadSysSplFile(widename, (char*)&enBuf, sizeof(struct SLinkInfo), errno, Backend()->FileSession()); |
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if (err == KErrNone) |
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{ |
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if((0 < bufsize && bufsize <= SSIZE_MAX) && NULL != buf ) |
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122 |
{ |
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if ((size_t)-1 != wcstombs(name, enBuf.iParentPath, sizeof(enBuf.iParentPath))) |
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{ |
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strncpy(buf, name, bufsize); |
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return (strlen(name) >= bufsize ? bufsize : strlen(buf)); |
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} |
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} |
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else |
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{ |
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errno = EINVAL; |
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return -1; |
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} |
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} |
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} |
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else if(err || (EFileNotFound == fileType)) |
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{ |
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return MapError(err, errno); |
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} |
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errno = EINVAL; |
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return -1; |
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} |
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return MapError(EILSEQ, errno); |
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} |
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return MapError(EINVAL, errno); |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// Funcation name: unlink |
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// Description: Provides unlink functionality. |
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// Returns: 0 : On success |
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// -1 : On error |
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// In case of error, errno value set |
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// |
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// ----------------------------------------------------------------------------- |
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// |
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|
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EXPORT_C int unlink(const char *pathname) |
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{ |
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wchar_t _pathwidename[MAXPATHLEN+1]; |
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|
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if ((size_t)-1 != mbstowcs(_pathwidename, pathname, MAXPATHLEN)) |
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{ |
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return _unlink_r(&errno, _pathwidename); |
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} |
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errno = EILSEQ; |
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return -1; |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// Funcation name: lstat, __xstat, __lxstat |
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// Description: All these functions directly call stat by themself . |
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// Returns: 0 : On success |
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// -1 : On error |
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// In case of error, errno value set |
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// |
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// ----------------------------------------------------------------------------- |
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// |
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|
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EXPORT_C int lstat(const char *file_name, struct stat *buf) |
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{ |
15
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if(!buf) |
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{ |
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errno = EFAULT ; |
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return -1 ; |
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} |
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|
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wchar_t tmpbuf[MAXPATHLEN+1]; |
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if ((size_t)-1 != mbstowcs(tmpbuf, file_name, MAXPATHLEN)) |
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{ |
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return _lstat_r(&errno, tmpbuf, buf); |
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} |
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errno = EILSEQ; |
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return -1; |
0
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} |
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EXPORT_C int __xstat(int /*vers*/, const char *file, struct stat *buf) |
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{ |
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return stat(file, buf); |
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} |
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|
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EXPORT_C int __lxstat (int /*version*/, const char *file, struct stat *buf) |
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{ |
15
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return lstat(file, buf); |
0
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} |
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|
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|
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} // extern "C" |
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|
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|
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// End of File |