47 lines
1.6 KiB
C++
47 lines
1.6 KiB
C++
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2011, 2012, 2014.
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This file is part of the Sortix C Library.
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The Sortix C Library is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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The Sortix C Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
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unistd/get_current_dir_name.cpp
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Returns the current working directory.
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*******************************************************************************/
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#include <sys/stat.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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// TODO: This interface should removed as its $PWD use is not thread safe.
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extern "C" char* get_current_dir_name(void)
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{
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const char* pwd = getenv("PWD");
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int saved_errno = errno;
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struct stat pwd_st;
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struct stat cur_st;
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if ( pwd && pwd[0] && stat(pwd, &pwd_st) == 0 && stat(".", &cur_st) == 0 )
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{
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if ( cur_st.st_dev == pwd_st.st_dev && cur_st.st_ino == pwd_st.st_ino )
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return strdup(pwd);
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}
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errno = saved_errno;
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return canonicalize_file_name(".");
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}
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