This file is cd.def, from which is created cd.c. It implements the
builtins "cd" and "pwd" in Bash.
-Copyright (C) 1987-2005 Free Software Foundation, Inc.
+Copyright (C) 1987-2009 Free Software Foundation, Inc.
This file is part of GNU Bash, the Bourne Again SHell.
-Bash is free software; you can redistribute it and/or modify it under
-the terms of the GNU General Public License as published by the Free
-Software Foundation; either version 2, or (at your option) any later
-version.
+Bash is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
-Bash 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 General Public License
-for more details.
+Bash 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 General Public License for more details.
-You should have received a copy of the GNU General Public License along
-with Bash; see the file COPYING. If not, write to the Free Software
-Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA.
+You should have received a copy of the GNU General Public License
+along with Bash. If not, see <http://www.gnu.org/licenses/>.
$PRODUCES cd.c
#include <config.h>
extern int posixly_correct;
extern int array_needs_making;
-extern char *bash_getcwd_errstr;
+extern const char * const bash_getcwd_errstr;
static int bindpwd __P((int));
static void setpwd __P((char *));
static char *resetpwd __P((char *));
static int change_to_directory __P((char *, int));
-static char *cdspell __P((char *));
-
/* Change this to 1 to get cd spelling correction by default. */
int cdspelling = 0;
$BUILTIN cd
$FUNCTION cd_builtin
$SHORT_DOC cd [-L|-P] [dir]
-Change the current directory to DIR. The variable $HOME is the
-default DIR. The variable CDPATH defines the search path for
-the directory containing DIR. Alternative directory names in CDPATH
-are separated by a colon (:). A null directory name is the same as
-the current directory, i.e. `.'. If DIR begins with a slash (/),
-then CDPATH is not used. If the directory is not found, and the
-shell option `cdable_vars' is set, then try the word as a variable
-name. If that variable has a value, then cd to the value of that
-variable. The -P option says to use the physical directory structure
-instead of following symbolic links; the -L option forces symbolic links
-to be followed.
+Change the shell working directory.
+
+Change the current directory to DIR. The default DIR is the value of the
+HOME shell variable.
+
+The variable CDPATH defines the search path for the directory containing
+DIR. Alternative directory names in CDPATH are separated by a colon (:).
+A null directory name is the same as the current directory. If DIR begins
+with a slash (/), then CDPATH is not used.
+
+If the directory is not found, and the shell option `cdable_vars' is set,
+the word is assumed to be a variable name. If that variable has a value,
+its value is used for DIR.
+
+Options:
+ -L force symbolic links to be followed
+ -P use the physical directory structure without following symbolic
+ links
+
+The default is to follow symbolic links, as if `-L' were specified.
+
+Exit Status:
+Returns 0 if the directory is changed; non-zero otherwise.
$END
/* Just set $PWD, don't change OLDPWD. Used by `pwd -P' in posix mode. */
int no_symlinks;
{
char *dirname, *pwdvar;
- int old_anm;
+ int old_anm, r;
SHELL_VAR *tvar;
+ r = sh_chkwrite (EXECUTION_SUCCESS);
+
#define tcwd the_current_working_directory
dirname = tcwd ? (no_symlinks ? sh_physpath (tcwd, 0) : tcwd)
: get_working_directory ("cd");
if (dirname && dirname != the_current_working_directory)
free (dirname);
- return (EXECUTION_SUCCESS);
+ return (r);
}
/* Call get_working_directory to reset the value of
}
else if (absolute_pathname (list->word->word))
dirname = list->word->word;
- else if (cdpath = get_string_value ("CDPATH"))
+ else if (privileged_mode == 0 && (cdpath = get_string_value ("CDPATH")))
{
dirname = list->word->word;
typo. This is similar to the UNIX 8th and 9th Edition shells. */
if (lflag & LCD_DOSPELL)
{
- temp = cdspell (dirname);
+ temp = dirspell (dirname);
if (temp && change_to_directory (temp, no_symlinks))
{
printf ("%s\n", temp);
$BUILTIN pwd
$FUNCTION pwd_builtin
$SHORT_DOC pwd [-LP]
-Print the current working directory. With the -P option, pwd prints
-the physical directory, without any symbolic links; the -L option
-makes pwd follow symbolic links.
+Print the name of the current working directory.
+
+Options:
+ -L print the value of $PWD if it names the current working
+ directory
+ -P print the physical directory, without any symbolic links
+
+By default, `pwd' behaves as if `-L' were specified.
+
+Exit Status:
+Returns 0 unless an invalid option is given or the current directory
+cannot be read.
$END
/* Non-zero means that pwd always prints the physical directory, without
setpwd (directory);
if (directory != the_current_working_directory)
free (directory);
- fflush (stdout);
- if (ferror (stdout))
- {
- sh_wrerror ();
- clearerr (stdout);
- return (EXECUTION_FAILURE);
- }
-
- return (EXECUTION_SUCCESS);
+ return (sh_chkwrite (EXECUTION_SUCCESS));
}
else
return (EXECUTION_FAILURE);
free (tdir);
return r;
}
-
-/* Code for cd spelling correction. Original patch submitted by
- Neil Russel (caret@c-side.com). */
-
-static char *
-cdspell (dirname)
- char *dirname;
-{
- int n;
- char *guess;
-
- n = (strlen (dirname) * 3 + 1) / 2 + 1;
- guess = (char *)xmalloc (n);
-
- switch (spname (dirname, guess))
- {
- case -1:
- default:
- free (guess);
- return (char *)NULL;
- case 0:
- case 1:
- return guess;
- }
-}
projects / platform / upstream / bash.git / blobdiff