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Diffstat (limited to 'REORG.TODO/io/getdirname.c')
-rw-r--r-- | REORG.TODO/io/getdirname.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/REORG.TODO/io/getdirname.c b/REORG.TODO/io/getdirname.c new file mode 100644 index 0000000000..e2e449fd16 --- /dev/null +++ b/REORG.TODO/io/getdirname.c @@ -0,0 +1,43 @@ +/* Copyright (C) 1992-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU 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 2.1 of the License, or (at your option) any later version. + + The GNU 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 GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <unistd.h> +#include <include/sys/stat.h> +#include <stdlib.h> +#include <string.h> + +/* Return a malloc'd string containing the current directory name. + If the environment variable `PWD' is set, and its value is correct, + that value is used. */ + +char * +get_current_dir_name (void) +{ + char *pwd; + struct stat64 dotstat, pwdstat; + + pwd = getenv ("PWD"); + if (pwd != NULL + && stat64 (".", &dotstat) == 0 + && stat64 (pwd, &pwdstat) == 0 + && pwdstat.st_dev == dotstat.st_dev + && pwdstat.st_ino == dotstat.st_ino) + /* The PWD value is correct. Use it. */ + return __strdup (pwd); + + return __getcwd ((char *) NULL, 0); +} |