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151 lines
4.2 KiB
C
151 lines
4.2 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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* Copyright (C) 2007 Bernhard Fischer
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*
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* Based on a older version that was in busybox which was 1k big..
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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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* Licensed under GPL v2 or later, see file LICENSE in this tarball for details.
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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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*/
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#include "busybox.h"
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#include <getopt.h>
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#if ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS
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static const struct option runparts_long_options[] = {
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{ "arg", 1, NULL, 'a' },
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{ "umask", 1, NULL, 'u' },
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{ "test", 0, NULL, 't' },
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#if ENABLE_FEATURE_RUN_PARTS_FANCY
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{ "list", 0, NULL, 'l' },
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//XXX:TODO: { "reverse", 0, NULL, 'r' },
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//XXX:TODO: { "verbose", 0, NULL, 'v' },
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#endif
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{ 0, 0, 0, 0 }
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};
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#endif
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struct globals {
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smalluint mode;
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char *cmd[10]; /* merely arbitrary arg count */
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};
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#define G (*(struct globals*)&bb_common_bufsiz1)
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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 bool invalid_name(const char *c)
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{
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const char *base_name = strrchr(c, '/');
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if (base_name)
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c = base_name + 1;
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while (*c && (isalnum(*c) || *c == '_' || *c == '-'))
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c++;
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return *c; /* TRUE (!0) if terminating NUL is not reached */
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}
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#define RUN_PARTS_OPT_a (1<<0)
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#define RUN_PARTS_OPT_u (1<<1)
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#define RUN_PARTS_OPT_t (1<<2)
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#if ENABLE_FEATURE_RUN_PARTS_FANCY
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#define RUN_PARTS_OPT_l (1<<3)
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#endif
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#define test_mode (G.mode & RUN_PARTS_OPT_t)
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#if ENABLE_FEATURE_RUN_PARTS_FANCY
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#define list_mode (G.mode & RUN_PARTS_OPT_l)
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#else
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#define list_mode (0)
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#endif
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static int act(const char *file, struct stat *statbuf, void *args, int depth)
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{
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int ret;
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if (depth == 1)
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return TRUE;
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if (depth == 2 &&
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((!list_mode && access(file, X_OK)) ||
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invalid_name(file) ||
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!(statbuf->st_mode & (S_IFREG | S_IFLNK))) )
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return SKIP;
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if (test_mode || list_mode) {
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puts(file);
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return TRUE;
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}
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G.cmd[0] = (char*)file;
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ret = wait4pid(spawn(G.cmd));
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if (ret < 0) {
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bb_perror_msg("failed to exec %s", file);
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} else if (ret > 0) {
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bb_error_msg("%s exited with return code %d", file, ret);
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}
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return !ret;
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}
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int run_parts_main(int argc, char **argv);
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int run_parts_main(int argc, char **argv)
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{
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char *umask_p;
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llist_t *arg_list = NULL;
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unsigned tmp;
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umask(022);
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/* We require exactly one argument: the directory name */
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opt_complementary = "=1:a::";
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#if ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS
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applet_long_options = runparts_long_options;
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#endif
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tmp = getopt32(argc, argv, "a:u:t"USE_FEATURE_RUN_PARTS_FANCY("l"), &arg_list, &umask_p);
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G.mode = tmp &~ (RUN_PARTS_OPT_a|RUN_PARTS_OPT_u);
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if (tmp & RUN_PARTS_OPT_u) {
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/* Check and set the umask of the program executed.
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* As stated in the original run-parts, the octal conversion in
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* libc is not foolproof; it will take the 8 and 9 digits under
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* some circumstances. We'll just have to live with it.
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*/
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umask(xstrtoul_range(umask_p, 8, 0, 07777));
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}
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for (tmp = 1; arg_list; arg_list = arg_list->link, tmp++)
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G.cmd[tmp] = arg_list->data;
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/* G.cmd[tmp] = NULL; - G is already zeroed out */
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if (!recursive_action(argv[argc - 1],
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ACTION_RECURSE|ACTION_FOLLOWLINKS,
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act, /* file action */
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act, /* dir action */
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NULL, /* user data */
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1 /* depth */
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))
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return EXIT_FAILURE;
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return EXIT_SUCCESS;
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}
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