This file is builtin.def, from which is created builtin.c.
It implements the builtin "builtin" in Bash.
Copyright (C) 1987-2017 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 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.
You should have received a copy of the GNU General Public License
along with Bash. If not, see <http://www.gnu.org/licenses/>.
$PRODUCES builtin.c
$BUILTIN builtin
$FUNCTION builtin_builtin
$SHORT_DOC builtin [shell-builtin [arg ...]]
Execute shell builtins.
Execute SHELL-BUILTIN with arguments ARGs without performing command
lookup. This is useful when you wish to reimplement a shell builtin
as a shell function, but need to execute the builtin within the function.
Exit Status:
Returns the exit status of SHELL-BUILTIN, or false if SHELL-BUILTIN is
not a shell builtin.
$END
#include <config.h>
#if defined (HAVE_UNISTD_H)
# ifdef _MINIX
# include <sys/types.h>
# endif
# include <unistd.h>
#endif
#include "../shell.h"
#include "../execute_cmd.h"
#include "common.h"
#include "bashgetopt.h"
/* Run the command mentioned in list directly, without going through the
normal alias/function/builtin/filename lookup process. */
int
builtin_builtin (list)
WORD_LIST *list;
{
sh_builtin_func_t *function;
register char *command;
if (no_options (list))
return (EX_USAGE);
list = loptend; /* skip over possible `--' */
if (list == 0)
return (EXECUTION_SUCCESS);
command = list->word->word;
#if defined (DISABLED_BUILTINS)
function = builtin_address (command);
#else /* !DISABLED_BUILTINS */
function = find_shell_builtin (command);
#endif /* !DISABLED_BUILTINS */
if (function == 0)
{
sh_notbuiltin (command);
return (EXECUTION_FAILURE);
}
else
{
this_command_name = command;
this_shell_builtin = function; /* overwrite "builtin" as this builtin */
list = list->next;
return ((*function) (list));
}
}