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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 <getopt.h>
#include "libbb.h"
struct globals {
char **names;
int cur;
char *cmd[1];
};
#define G (*(struct globals*)&bb_common_bufsiz1)
#define names (G.names)
#define cur (G.cur )
#define cmd (G.cmd )
enum { NUM_CMD = (COMMON_BUFSIZE - sizeof(struct globals)) / sizeof(cmd[0]) };
enum {
RUN_PARTS_OPT_a = (1 << 0),
RUN_PARTS_OPT_u = (1 << 1),
RUN_PARTS_OPT_t = (1 << 2),
RUN_PARTS_OPT_l = (1 << 3) * ENABLE_FEATURE_RUN_PARTS_FANCY,
};
#if ENABLE_FEATURE_RUN_PARTS_FANCY
#define list_mode (option_mask32 & RUN_PARTS_OPT_l)
#else
#define list_mode 0
#endif
/* Is this a valid filename (upper/lower alpha, digits,
* underscores, and hyphens only?)
*/
static bool invalid_name(const char *c)
{
c = bb_basename(c);
while (*c && (isalnum(*c) || *c == '_' || *c == '-'))
c++;
return *c; /* TRUE (!0) if terminating NUL is not reached */
}
static int bb_alphasort(const void *p1, const void *p2)
{
return strcmp(*(char **) p1, *(char **) p2);
}
static int act(const char *file, struct stat *statbuf, void *args, int depth)
{
if (depth == 1)
return TRUE;
if (depth == 2
&& ( !(statbuf->st_mode & (S_IFREG | S_IFLNK))
|| invalid_name(file)
|| (!list_mode && access(file, X_OK) != 0))
) {
return SKIP;
}
names = xrealloc(names, (cur + 2) * sizeof(names[0]));
names[cur++] = xstrdup(file);
names[cur] = NULL;
return TRUE;
}
#if ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS
static const char runparts_longopts[] ALIGN1 =
"arg\0" Required_argument "a"
"umask\0" Required_argument "u"
"test\0" No_argument "t"
#if ENABLE_FEATURE_RUN_PARTS_FANCY
"list\0" No_argument "l"
//TODO: "reverse\0" No_argument "r"
//TODO: "verbose\0" No_argument "v"
#endif
;
#endif
int run_parts_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int run_parts_main(int argc, char **argv)
{
const char *umask_p = "22";
llist_t *arg_list = NULL;
unsigned n;
int ret;
#if ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS
applet_long_options = runparts_longopts;
#endif
/* We require exactly one argument: the directory name */
opt_complementary = "=1:a::";
getopt32(argv, "a:u:t"USE_FEATURE_RUN_PARTS_FANCY("l"), &arg_list, &umask_p);
umask(xstrtou_range(umask_p, 8, 0, 07777));
n = 1;
while (arg_list && n < NUM_CMD) {
cmd[n] = arg_list->data;
arg_list = arg_list->link;
n++;
}
/* cmd[n] = NULL; - is already zeroed out */
/* run-parts has to sort executables by name before running them */
recursive_action(argv[optind],
ACTION_RECURSE|ACTION_FOLLOWLINKS,
act, /* file action */
act, /* dir action */
NULL, /* user data */
1 /* depth */
);
if (!names)
return 0;
qsort(names, cur, sizeof(char *), bb_alphasort);
n = 0;
while (1) {
char *name = *names++;
if (!name)
break;
if (option_mask32 & (RUN_PARTS_OPT_t | RUN_PARTS_OPT_l)) {
puts(name);
continue;
}
cmd[0] = name;
ret = wait4pid(spawn(cmd));
if (ret == 0)
continue;
n = 1;
if (ret < 0)
bb_perror_msg("failed to exec %s", name);
else /* ret > 0 */
bb_error_msg("%s exited with return code %d", name, ret);
}
return n;
}
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