Symaptic: os/ossrv/genericopenlibs/openenvcore/libc/src/getcwd.cpp@260cb5ec6c19

     1 /*

     2 * Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:

    15 */

    16 /*

    17 * ==============================================================================

    18 *  Name        : getcwd.cpp

    19 *  Part of     : libc library

    20 *  Description : gets current working directory.

    21 *

    22 * ============================================================================

    23 */

    25 #include "sysif.h"

    26 #include <sys/errno.h> //error codes (ENOMEM, EINVAL)

    27 #include "sysreent.h"

    28 #include <string.h> //strlen

    29 #include <stdlib.h>

    31 extern "C" {

    33 /*

    34 Gets the path name of the current working directory.

    35 If a buffer is specified, the path name is placed in that buffer,

    36 and the address of the buffer is returned.

    37 */

    38 EXPORT_C char* getcwd (char *_buf, size_t _size)

    39 	{

    41         if (_buf != 0 && _size == 0)

    42 		{

    43 		errno = EINVAL;

    44 		return NULL;

    45 		}

    47 	char * _ourbuf = _buf;

    48 	if (_buf==0)

    49 		{

    50 		if (_size >= (KMaxTInt/2))

    51 			{

    52 			errno=ENOMEM;

    53 			return _buf;

    54 			}

    55 		//coverity[alloc_fn]

    56 		//coverity[assign]

    57 		_ourbuf = (char *)	malloc(_size);

    58 		if (_ourbuf == 0)

    59 			{

    60 			errno=ENOMEM;

    61 			return _buf;

    62 			}

    63 		}

    65    //we are dealing with wide characters from here so we need a temporary buffer

    66 	wchar_t tmpbuf[KMaxFullName];

    67 	//coverity[leave_without_push]

    68 	wchar_t *cret = _getcwd_r(&errno, tmpbuf, _size);

    70 	if (cret)	//we have a path

    71 		{

    72 		//convert it to UTF8

    73 		size_t x = wcstombs(_ourbuf, tmpbuf, _size);	//convert the buffer

    75 		//remove the trailing backslash

    76               int cwd_len = strlen(_ourbuf);

    77 		if(_ourbuf[cwd_len - 1] == '\\')

    78 			_ourbuf[cwd_len - 1] = '\0';

    80 		return _ourbuf;

    81 		}

    83 	//deal with the fact we may have allocated our own buffer

    84 	if (_buf != _ourbuf)  //we allocated it.

    85 		{

    86 			free(_ourbuf);

    87        	}

    89 	return NULL;

    90 	}

    92 } // extern "C"

author	sl
	Tue, 10 Jun 2014 14:32:02 +0200
changeset 1	260cb5ec6c19
permissions	-rw-r--r--