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sortix--sortix/libc/unistd/getcwd.cpp
2014-12-04 17:56:47 +01:00

45 lines
1.3 KiB
C++

/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2011, 2012, 2014.
This file is part of the Sortix C Library.
The Sortix C Library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at your
option) any later version.
The Sortix C Library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
unistd/getcwd.cpp
Returns the current working directory.
*******************************************************************************/
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
extern "C" char* getcwd(char* buf, size_t size)
{
char* cwd = canonicalize_file_name(".");
if ( !cwd )
return NULL;
if ( !buf )
return cwd;
if ( size <= strlcpy(buf, cwd, size) )
{
free(cwd);
errno = ERANGE;
return NULL;
}
free(cwd);
return buf;
}