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/* vi: set sw=4 ts=4: */
/*
* Mini run-parts implementation for busybox
*
* Copyright (C) 2007 Bernhard Fischer
*
* Based on a older version that was in busybox which was 1k big..
* 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.
*/
#include "busybox.h"
#include <getopt.h>
#if ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS
static const struct option runparts_long_options[] = {
{ "arg", 1, NULL, 'a' },
{ "umask", 1, NULL, 'u' },
{ "test", 0, NULL, 't' },
#if ENABLE_FEATURE_RUN_PARTS_FANCY
{ "list", 0, NULL, 'l' },
//XXX:TODO: { "reverse", 0, NULL, 'r' },
//XXX:TODO: { "verbose", 0, NULL, 'v' },
#endif
{ 0, 0, 0, 0 }
};
#endif
struct globals {
char *cmd[10]; /* merely arbitrary arg count */
smalluint mode;
};
#define G (*(struct globals*)&bb_common_bufsiz1)
/* valid_name */
/* True or false? Is this a valid filename (upper/lower alpha, digits,
* underscores, and hyphens only?)
*/
static bool invalid_name(const char *c)
{
while (*c) {
if (!isalnum(*c) && (*c != '_') && (*c != '-' && (*c != '/'))) {
return 1;
}
++c;
}
return 0;
}
#define RUN_PARTS_OPT_a (1<<0)
#define RUN_PARTS_OPT_u (1<<1)
#define RUN_PARTS_OPT_t (1<<2)
#if ENABLE_FEATURE_RUN_PARTS_FANCY
#define RUN_PARTS_OPT_l (1<<3)
#endif
#define test_mode (G.mode & RUN_PARTS_OPT_t)
#if ENABLE_FEATURE_RUN_PARTS_FANCY
#define list_mode (G.mode & RUN_PARTS_OPT_l)
#else
#define list_mode (0)
#endif
static int act(const char *file, struct stat *statbuf, void *args, int depth)
{
int ret;
if (depth == 1)
return TRUE;
if (depth == 2 &&
((!list_mode && access(file, X_OK)) ||
invalid_name(file) ||
!(statbuf->st_mode & (S_IFREG | S_IFLNK))) )
return SKIP;
if (test_mode || list_mode) {
puts(file);
return TRUE;
}
G.cmd[0] = (char*)file;
ret = wait4pid(spawn(G.cmd));
if (ret < 0) {
bb_error_msg("failed to exec %s", *G.cmd);
} else if (ret > 0) {
bb_perror_msg("%s exited with return code %d", *G.cmd, ret);
}
return !ret;
}
int run_parts_main(int argc, char **argv);
int run_parts_main(int argc, char **argv)
{
char *umask_p;
llist_t *arg_list = NULL;
unsigned tmp;
umask(022);
/* We require exactly one argument: the directory name */
opt_complementary = "=1:a::";
#if ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS
applet_long_options = runparts_long_options;
#endif
tmp = getopt32(argc, argv, "a:u:t"USE_FEATURE_RUN_PARTS_FANCY("l"), &arg_list, &umask_p);
G.mode = tmp &~ (RUN_PARTS_OPT_a|RUN_PARTS_OPT_u);
if (tmp & RUN_PARTS_OPT_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(umask_p, 8, 0, 07777));
}
//XXX: FIXME: reverse the list before handing it over to the user.
//XXX: FIXME: The common case seems to be to use the order given by the user
arg_list = llist_rev(arg_list); /* XXX: getopt32 appends them */
G.cmd[0] = (char*)"";
for (tmp = 1; arg_list; arg_list = arg_list->link, tmp++)
G.cmd[tmp] = arg_list->data;
if (!recursive_action(argv[argc - 1],
TRUE, /* recurse */
TRUE, /* follow links */
FALSE, /* depth first */
act, /* file action */
act, /* dir action */
NULL, /* user data */
1 /* depth */
))
return EXIT_FAILURE;
return EXIT_SUCCESS;
}
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