busybox/debianutils/run_parts.c
Denis Vlasenko bdc88fdc68 rework long option handling. saves ~1.2k
function                                             old     new   delta
tar_longopts                                           -     222    +222
static.udhcpc_longopts                                 -     192    +192
start_stop_daemon_longopts                             -     150    +150
getopt32                                            1045    1185    +140
static.wget_longopts                                   -     111    +111
static.od_longopts                                     -     105    +105
getopt_longopts                                        -      96     +96
install_longopts                                       -      67     +67
ipcalc_longopts                                        -      63     +63
static.hwclock_longopts                                -      54     +54
ftpgetput_longopts                                     -      52     +52
static.dumpleases_longopts                             -      32     +32
env_longopts                                           -      31     +31
runparts_longopts                                      -      30     +30
mv_longopts                                            -      24     +24
mkdir_longopts                                         -      19     +19
find_pair                                            164     180     +16
bb_null_long_options                                   -      16     +16
setconsole_longopts                                    -      10     +10
display_speed                                         91      98      +7
collect_blk                                          467     474      +7
show_color                                             4       1      -3
ls_main                                              913     904      -9
bb_default_long_options                               16       -     -16
ls_color_opt                                          32      10     -22
setconsole_long_options                               32       -     -32
arith                                               2077    2030     -47
mv_long_options                                       48       -     -48
mkdir_long_options                                    48       -     -48
env_long_options                                      48       -     -48
static.options                                       248     184     -64
runparts_long_options                                 80       -     -80
ftpgetput_long_options                                96       -     -96
static.hwclock_long_options                          112       -    -112
install_long_options                                 112       -    -112
static.long_options                                  144       -    -144
static.wget_long_options                             160       -    -160
longopts                                             160       -    -160
static.arg_options                                   304       -    -304
tar_long_options                                     320       -    -320
long_options                                         384       -    -384
------------------------------------------------------------------------------
(add/remove: 17/15 grow/shrink: 4/5 up/down: 1444/-2209)     Total: -765 bytes
   text    data     bss     dec     hex filename
 782618    1328   11900  795846   c24c6 busybox_old
 781354    1328   11900  794582   c1fd6 busybox_unstripped
2007-07-23 17:14:14 +00:00

147 lines
4.1 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 char runparts_longopts[] =
"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
"\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)
{
c = bb_basename(c);
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_longopts;
#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;
}