diff options
Diffstat (limited to 'libc/sysdeps/linux/common')
| -rw-r--r-- | libc/sysdeps/linux/common/Makefile | 2 | ||||
| -rw-r--r-- | libc/sysdeps/linux/common/getdirname.c | 45 |
2 files changed, 46 insertions, 1 deletions
diff --git a/libc/sysdeps/linux/common/Makefile b/libc/sysdeps/linux/common/Makefile index 9e3f477b0..984ba8dfc 100644 --- a/libc/sysdeps/linux/common/Makefile +++ b/libc/sysdeps/linux/common/Makefile @@ -34,7 +34,7 @@ CSRC= waitpid.c getdnnm.c gethstnm.c getcwd.c \ wait3.c setpgrp.c getdtablesize.c create_module.c ptrace.c \ cmsg_nxthdr.c longjmp.c open64.c ftruncate64.c \ truncate64.c getrlimit64.c setrlimit64.c creat64.c mmap64.c \ - llseek.c pread_write.c _exit.c setuid.c sync.c + llseek.c pread_write.c _exit.c setuid.c sync.c getdirname.c ifneq ($(strip $(EXCLUDE_BRK)),true) CSRC+=sbrk.c endif diff --git a/libc/sysdeps/linux/common/getdirname.c b/libc/sysdeps/linux/common/getdirname.c new file mode 100644 index 000000000..a9ce43f30 --- /dev/null +++ b/libc/sysdeps/linux/common/getdirname.c @@ -0,0 +1,45 @@ +/* vi: set sw=4 ts=4: */ +/* Copyright (C) 1992, 1997, 1998, 2000 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <unistd.h> +#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); +} |