- Added the chroot function for changing root in a script.

#- This can be usefull when using PHP in a shell environment, or when PHP
#  runs as CGI which needs a little more security

3 files changed, 26 insertions, 0 deletions

diff --git a/ext/standard/basic_functions.c b/ext/standard/basic_functions.c
index d1e6fa3ff9..40c37b85f8 100644
--- a/ext/standard/basic_functions.c
+++ b/ext/standard/basic_functions.c
@@ -465,6 +465,7 @@ function_entry basic_functions[] = {
 	PHP_FE(opendir,				NULL)
 	PHP_FE(closedir,			NULL)
 	PHP_FE(chdir,				NULL)
+	PHP_FE(chroot,				NULL)
 	PHP_FE(getcwd,				NULL)
 	PHP_FE(rewinddir,			NULL)
 	PHP_STATIC_FE("readdir", php_if_readdir, NULL)
diff --git a/ext/standard/dir.c b/ext/standard/dir.c
index 97f2ac89c6..37d7ddfb65 100644
--- a/ext/standard/dir.c
+++ b/ext/standard/dir.c
@@ -222,6 +222,30 @@ PHP_FUNCTION(closedir)
 }
 
 /* }}} */
+/* {{{ proto int chroot(string directory)
+   Change root directory */
+
+PHP_FUNCTION(chroot)
+{
+	pval **arg;
+	int ret;
+	
+	if (ZEND_NUM_ARGS() != 1 || zend_get_parameters_ex(1, &arg) == FAILURE) {
+		WRONG_PARAM_COUNT;
+	}
+	convert_to_string_ex(arg);
+
+	ret = chroot((*arg)->value.str.val);
+	
+	if (ret != 0) {
+		php_error(E_WARNING, "chroot: %s (errno %d)", strerror(errno), errno);
+		RETURN_FALSE;
+	}
+
+	RETURN_TRUE;
+}
+
+/* }}} */
 /* {{{ proto int chdir(string directory)
    Change the current directory */
 
diff --git a/ext/standard/php_dir.h b/ext/standard/php_dir.h
index 8bbaba3b80..7e48f0783e 100644
--- a/ext/standard/php_dir.h
+++ b/ext/standard/php_dir.h
@@ -28,6 +28,7 @@ PHP_RINIT_FUNCTION(dir);
 PHP_FUNCTION(opendir);
 PHP_FUNCTION(closedir);
 PHP_FUNCTION(chdir);
+PHP_FUNCTION(chroot);
 PHP_FUNCTION(getcwd);
 PHP_FUNCTION(rewinddir);
 PHP_NAMED_FUNCTION(php_if_readdir);