busybox/debianutils/run_parts.c

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/* vi: set sw=4 ts=4: */
/*
* Mini run-parts implementation for busybox
*
*
* Copyright (C) 2001 by Emanuele Aina <emanuele.aina@tiscali.it>
*
* Based on the Debian run-parts program, version 1.15
* Copyright (C) 1996 Jeff Noxon <jeff@router.patch.net>,
* Copyright (C) 1996-1999 Guy Maor <maor@debian.org>
*
*
* This program 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 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA
*
*/
/* This is my first attempt to write a program in C (well, this is my first
* attempt to write a program! :-) . */
/* This piece of code is heavily based on the original version of run-parts,
* taken from debian-utils. I've only removed the long options and a the
* report mode. As the original run-parts support only long options, I've
* broken compatibility because the BusyBox policy doesn't allow them.
* The supported options are:
* -t test. Print the name of the files to be executed, without
* execute them.
* -a ARG argument. Pass ARG as an argument the program executed. It can
* be repeated to pass multiple arguments.
* -u MASK umask. Set the umask of the program executed to MASK. */
/* TODO
* done - convert calls to error in perror... and remove error()
* done - convert malloc/realloc to their x... counterparts
* done - remove catch_sigchld
* done - use bb's concat_path_file()
* done - declare run_parts_main() as extern and any other function as static?
*/
#include <getopt.h>
#include <stdlib.h>
#include "libbb.h"
/* run_parts_main */
/* Process options */
int run_parts_main(int argc, char **argv)
{
char **args = xmalloc(2 * sizeof(char *));
unsigned char test_mode = 0;
unsigned short argcount = 1;
int opt;
umask(022);
while ((opt = getopt(argc, argv, "tu:a:")) != -1) {
switch (opt) {
case 't': /* Enable test mode */
test_mode = 1;
break;
case 'u': /* Set the umask of the programs executed */
/* Check and set the umask of the program executed. As stated in the original
* run-parts, the octal conversion in libc is not foolproof; it will take the
* 8 and 9 digits under some circumstances. We'll just have to live with it.
*/
{
const unsigned int mask = (unsigned int) strtol(optarg, NULL, 8);
if (mask > 07777) {
perror_msg_and_die("bad umask value");
}
umask(mask);
}
break;
case 'a': /* Pass an argument to the programs */
/* Add an argument to the commands that we will call.
* Called once for every argument. */
args = xrealloc(args, (argcount + 2) * (sizeof(char *)));
args[argcount++] = optarg;
args[argcount] = 0;
break;
default:
show_usage();
}
}
/* We require exactly one argument: the directory name */
if (optind != (argc - 1)) {
show_usage();
}
args[0] = argv[optind];
return(run_parts(args, test_mode));
}