140 lines
4.0 KiB
C
140 lines
4.0 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Mini run-parts implementation for busybox
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*
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*
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* Copyright (C) 2001 by Emanuele Aina <emanuele.aina@tiscali.it>
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*
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* Based on the Debian run-parts program, version 1.15
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* Copyright (C) 1996 Jeff Noxon <jeff@router.patch.net>,
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* Copyright (C) 1996-1999 Guy Maor <maor@debian.org>
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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* 02111-1307 USA
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*
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*/
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/* This is my first attempt to write a program in C (well, this is my first
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* attempt to write a program! :-) . */
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/* This piece of code is heavily based on the original version of run-parts,
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* taken from debian-utils. I've only removed the long options and a the
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* report mode. As the original run-parts support only long options, I've
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* broken compatibility because the BusyBox policy doesn't allow them.
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* The supported options are:
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* -t test. Print the name of the files to be executed, without
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* execute them.
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* -a ARG argument. Pass ARG as an argument the program executed. It can
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* be repeated to pass multiple arguments.
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* -u MASK umask. Set the umask of the program executed to MASK. */
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/* TODO
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* done - convert calls to error in perror... and remove error()
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* done - convert malloc/realloc to their x... counterparts
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* done - remove catch_sigchld
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* done - use bb's concat_path_file()
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* done - declare run_parts_main() as extern and any other function as static?
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*/
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <stdlib.h>
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#include <dirent.h>
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#include <unistd.h>
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#include <ctype.h>
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#include "libbb.h"
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/* valid_name */
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/* True or false? Is this a valid filename (upper/lower alpha, digits,
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* underscores, and hyphens only?)
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*/
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static int valid_name(const struct dirent *d)
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{
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char *c = d->d_name;
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while (*c) {
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if (!isalnum(*c) && (*c != '_') && (*c != '-')) {
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return 0;
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}
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++c;
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}
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return 1;
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}
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/* run_parts */
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/* Find the parts to run & call run_part() */
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extern int run_parts(char **args, const unsigned char test_mode)
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{
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struct dirent **namelist = 0;
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struct stat st;
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char *filename;
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int entries;
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int i;
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int exitstatus = 0;
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/* scandir() isn't POSIX, but it makes things easy. */
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entries = scandir(args[0], &namelist, valid_name, alphasort);
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if (entries == -1) {
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perror_msg_and_die("failed to open directory %s", args[0]);
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}
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for (i = 0; i < entries; i++) {
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filename = concat_path_file(args[0], namelist[i]->d_name);
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if (stat(filename, &st) < 0) {
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perror_msg_and_die("failed to stat component %s", filename);
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}
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if (S_ISREG(st.st_mode) && !access(filename, X_OK)) {
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if (test_mode)
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printf("run-parts would run %s\n", filename);
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else {
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int result;
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int pid;
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if ((pid = fork()) < 0) {
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perror_msg_and_die("failed to fork");
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} else if (!pid) {
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execv(args[0], args);
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perror_msg_and_die("failed to exec %s", args[0]);
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}
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waitpid(pid, &result, 0);
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if (WIFEXITED(result) && WEXITSTATUS(result)) {
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perror_msg("%s exited with return code %d", args[0], WEXITSTATUS(result));
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exitstatus = 1;
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} else if (WIFSIGNALED(result)) {
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perror_msg("%s exited because of uncaught signal %d", args[0], WTERMSIG(result));
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exitstatus = 1;
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}
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}
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}
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else if (!S_ISDIR(st.st_mode)) {
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error_msg("component %s is not an executable plain file", filename);
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exitstatus = 1;
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}
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free(namelist[i]);
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free(filename);
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}
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free(namelist);
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return(exitstatus);
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}
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