151 lines
4.2 KiB
C
151 lines
4.2 KiB
C
/* 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 <getopt.h>
|
|
|
|
#include "libbb.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 {
|
|
smalluint mode;
|
|
char *cmd[10]; /* merely arbitrary arg count */
|
|
};
|
|
#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)
|
|
{
|
|
const char *base_name = strrchr(c, '/');
|
|
|
|
if (base_name)
|
|
c = base_name + 1;
|
|
|
|
while (*c && (isalnum(*c) || *c == '_' || *c == '-'))
|
|
c++;
|
|
|
|
return *c; /* TRUE (!0) if terminating NUL is not reached */
|
|
}
|
|
|
|
#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_perror_msg("failed to exec %s", file);
|
|
} else if (ret > 0) {
|
|
bb_error_msg("%s exited with return code %d", file, 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));
|
|
}
|
|
for (tmp = 1; arg_list; arg_list = arg_list->link, tmp++)
|
|
G.cmd[tmp] = arg_list->data;
|
|
/* G.cmd[tmp] = NULL; - G is already zeroed out */
|
|
if (!recursive_action(argv[argc - 1],
|
|
ACTION_RECURSE|ACTION_FOLLOWLINKS,
|
|
act, /* file action */
|
|
act, /* dir action */
|
|
NULL, /* user data */
|
|
1 /* depth */
|
|
))
|
|
return EXIT_FAILURE;
|
|
return EXIT_SUCCESS;
|
|
}
|