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Diffstat (limited to 'i/pc104/initrd/conf/busybox/debianutils/run_parts.c')
-rw-r--r--i/pc104/initrd/conf/busybox/debianutils/run_parts.c192
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diff --git a/i/pc104/initrd/conf/busybox/debianutils/run_parts.c b/i/pc104/initrd/conf/busybox/debianutils/run_parts.c
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index 0000000..a864a05
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+++ b/i/pc104/initrd/conf/busybox/debianutils/run_parts.c
@@ -0,0 +1,192 @@
+/* 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>
+ *
+ *
+ * Licensed under GPL v2 or later, see file LICENSE in this tarball for details.
+ */
+
+/* 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 "busybox.h"
+#include <getopt.h>
+
+static const struct option runparts_long_options[] = {
+ { "test", 0, NULL, 't' },
+ { "umask", 1, NULL, 'u' },
+ { "arg", 1, NULL, 'a' },
+ { 0, 0, 0, 0 }
+};
+
+/* valid_name */
+/* True or false? Is this a valid filename (upper/lower alpha, digits,
+ * underscores, and hyphens only?)
+ */
+static int valid_name(const struct dirent *d)
+{
+ const char *c = d->d_name;
+
+ while (*c) {
+ if (!isalnum(*c) && (*c != '_') && (*c != '-')) {
+ return 0;
+ }
+ ++c;
+ }
+ return 1;
+}
+
+/* test mode = 1 is the same as official run_parts
+ * test_mode = 2 means to fail silently on missing directories
+ */
+static int run_parts(char **args, const unsigned char test_mode)
+{
+ struct dirent **namelist = 0;
+ struct stat st;
+ char *filename;
+ char *arg0 = args[0];
+ int entries;
+ int i;
+ int exitstatus = 0;
+
+#if __GNUC__
+ /* Avoid longjmp clobbering */
+ (void) &i;
+ (void) &exitstatus;
+#endif
+ /* scandir() isn't POSIX, but it makes things easy. */
+ entries = scandir(arg0, &namelist, valid_name, alphasort);
+
+ if (entries == -1) {
+ if (test_mode & 2) {
+ return 2;
+ }
+ bb_perror_msg_and_die("cannot open '%s'", arg0);
+ }
+
+ for (i = 0; i < entries; i++) {
+ filename = concat_path_file(arg0, namelist[i]->d_name);
+
+ xstat(filename, &st);
+ if (S_ISREG(st.st_mode) && !access(filename, X_OK)) {
+ if (test_mode) {
+ puts(filename);
+ } else {
+ /* exec_errno is common vfork variable */
+ volatile int exec_errno = 0;
+ int result;
+ int pid;
+
+ if ((pid = vfork()) < 0) {
+ bb_perror_msg_and_die("failed to fork");
+ } else if (!pid) {
+ args[0] = filename;
+ execve(filename, args, environ);
+ exec_errno = errno;
+ _exit(1);
+ }
+
+ waitpid(pid, &result, 0);
+ if (exec_errno) {
+ errno = exec_errno;
+ bb_perror_msg("failed to exec %s", filename);
+ exitstatus = 1;
+ }
+ if (WIFEXITED(result) && WEXITSTATUS(result)) {
+ bb_perror_msg("%s exited with return code %d", filename, WEXITSTATUS(result));
+ exitstatus = 1;
+ } else if (WIFSIGNALED(result)) {
+ bb_perror_msg("%s exited because of uncaught signal %d", filename, WTERMSIG(result));
+ exitstatus = 1;
+ }
+ }
+ } else if (!S_ISDIR(st.st_mode)) {
+ bb_error_msg("component %s is not an executable plain file", filename);
+ exitstatus = 1;
+ }
+
+ free(namelist[i]);
+ free(filename);
+ }
+ free(namelist);
+
+ return exitstatus;
+}
+
+
+/* run_parts_main */
+/* Process options */
+int run_parts_main(int argc, char **argv);
+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_long(argc, argv, "tu:a:",
+ runparts_long_options, NULL)) > 0)
+ {
+ switch (opt) {
+ /* Enable test mode */
+ case 't':
+ test_mode++;
+ break;
+ /* Set the umask of the programs executed */
+ case 'u':
+ /* 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.
+ */
+ umask(xstrtoul_range(optarg, 8, 0, 07777));
+ break;
+ /* Pass an argument to the programs */
+ case 'a':
+ /* 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;
+ break;
+ default:
+ bb_show_usage();
+ }
+ }
+
+ /* We require exactly one argument: the directory name */
+ if (optind != (argc - 1)) {
+ bb_show_usage();
+ }
+
+ args[0] = argv[optind];
+ args[argcount] = 0;
+
+ return run_parts(args, test_mode);
+}