036585a911
FEATURE_GETOPT_LONG made dependent on LONG_OPTS.
The folloving options are removed, now LONG_OPTS enables long options
for affected applets:
FEATURE_ENV_LONG_OPTIONS FEATURE_EXPAND_LONG_OPTIONS
FEATURE_UNEXPAND_LONG_OPTIONS FEATURE_MKDIR_LONG_OPTIONS
FEATURE_MV_LONG_OPTIONS FEATURE_RMDIR_LONG_OPTIONS
FEATURE_ADDGROUP_LONG_OPTIONS FEATURE_ADDUSER_LONG_OPTIONS
FEATURE_HWCLOCK_LONG_OPTIONS FEATURE_NSENTER_LONG_OPTS
FEATURE_CHCON_LONG_OPTIONS FEATURE_RUNCON_LONG_OPTIONS
They either had a small number of long options, or their long options are
essential.
Example: upstream addgroup and adduser have ONLY longopts,
we should probably go further and get rid
of non-standard short options.
To this end, make addgroup and adduser "select LONG_OPTS".
We had this breakage caused by us even in our own package!
#if ENABLE_LONG_OPTS || !ENABLE_ADDGROUP
/* We try to use --gid, not -g, because "standard" addgroup
* has no short option -g, it has only long --gid.
*/
argv[1] = (char*)"--gid";
#else
/* Breaks if system in fact does NOT use busybox addgroup */
argv[1] = (char*)"-g";
#endif
xargs: its lone longopt no longer depends on DESKTOP, only on LONG_OPTS.
hwclock TODO: get rid of incompatible -t, -l aliases to --systz, --localtime
Shorten help texts by omitting long option when short opt alternative exists.
Reduction of size comes from the fact that store of an immediate
(an address of longopts) to a fixed address (global variable)
is a longer insn than pushing that immediate or passing it in a register.
This effect is CPU-agnostic.
function old new delta
getopt32 1350 22 -1328
vgetopt32 - 1318 +1318
getopt32long - 24 +24
tftpd_main 562 567 +5
scan_recursive 376 380 +4
collect_cpu 545 546 +1
date_main 1096 1095 -1
hostname_main 262 259 -3
uname_main 259 255 -4
setpriv_main 362 358 -4
rmdir_main 191 187 -4
mv_main 562 558 -4
ipcalc_main 548 544 -4
ifenslave_main 641 637 -4
gzip_main 192 188 -4
gunzip_main 77 73 -4
fsfreeze_main 81 77 -4
flock_main 318 314 -4
deluser_main 337 333 -4
cp_main 374 370 -4
chown_main 175 171 -4
applet_long_options 4 - -4
xargs_main 894 889 -5
wget_main 2540 2535 -5
udhcpc_main 2767 2762 -5
touch_main 436 431 -5
tar_main 1014 1009 -5
start_stop_daemon_main 1033 1028 -5
sed_main 682 677 -5
script_main 1082 1077 -5
run_parts_main 330 325 -5
rtcwake_main 459 454 -5
od_main 2169 2164 -5
nl_main 201 196 -5
modprobe_main 773 768 -5
mkdir_main 160 155 -5
ls_main 568 563 -5
install_main 773 768 -5
hwclock_main 411 406 -5
getopt_main 622 617 -5
fstrim_main 256 251 -5
env_main 198 193 -5
dumpleases_main 635 630 -5
dpkg_main 3991 3986 -5
diff_main 1355 1350 -5
cryptpw_main 233 228 -5
cpio_main 593 588 -5
conspy_main 1135 1130 -5
chpasswd_main 313 308 -5
adduser_main 887 882 -5
addgroup_main 416 411 -5
ftpgetput_main 351 345 -6
get_terminal_width_height 242 234 -8
expand_main 690 680 -10
static.expand_longopts 18 - -18
static.unexpand_longopts 27 - -27
mkdir_longopts 28 - -28
env_longopts 30 - -30
static.ifenslave_longopts 34 - -34
mv_longopts 46 - -46
static.rmdir_longopts 48 - -48
packed_usage 31739 31687 -52
------------------------------------------------------------------------------
(add/remove: 2/8 grow/shrink: 3/49 up/down: 1352/-1840) Total: -488 bytes
text data bss dec hex filename
915681 485 6880 923046 e15a6 busybox_old
915428 485 6876 922789 e14a5 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
96 lines
2.3 KiB
C
96 lines
2.3 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* rmdir implementation for busybox
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*
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* Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
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*
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* Licensed under GPLv2 or later, see file LICENSE in this source tree.
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*/
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//config:config RMDIR
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//config: bool "rmdir (3.4 kb)"
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//config: default y
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//config: help
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//config: rmdir is used to remove empty directories.
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//applet:IF_RMDIR(APPLET_NOFORK(rmdir, rmdir, BB_DIR_BIN, BB_SUID_DROP, rmdir))
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//kbuild:lib-$(CONFIG_RMDIR) += rmdir.o
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/* BB_AUDIT SUSv3 compliant */
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/* http://www.opengroup.org/onlinepubs/007904975/utilities/rmdir.html */
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//usage:#define rmdir_trivial_usage
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//usage: "[OPTIONS] DIRECTORY..."
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//usage:#define rmdir_full_usage "\n\n"
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//usage: "Remove DIRECTORY if it is empty\n"
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//usage: "\n -p Include parents"
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//usage: IF_LONG_OPTS(
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//usage: "\n --ignore-fail-on-non-empty"
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//usage: )
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//usage:
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//usage:#define rmdir_example_usage
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//usage: "# rmdir /tmp/foo\n"
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#include "libbb.h"
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/* This is a NOFORK applet. Be very careful! */
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#define PARENTS (1 << 0)
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#define VERBOSE ((1 << 1) * ENABLE_FEATURE_VERBOSE)
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#define IGNORE_NON_EMPTY ((1 << 2) * ENABLE_LONG_OPTS)
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int rmdir_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int rmdir_main(int argc UNUSED_PARAM, char **argv)
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{
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int status = EXIT_SUCCESS;
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int flags;
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char *path;
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flags = getopt32long(argv, "pv",
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"parents\0" No_argument "p"
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/* Debian etch: many packages fail to be purged or installed
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* because they desperately want this option: */
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"ignore-fail-on-non-empty\0" No_argument "\xff"
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IF_FEATURE_VERBOSE(
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"verbose\0" No_argument "v"
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)
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);
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argv += optind;
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if (!*argv) {
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bb_show_usage();
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}
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do {
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path = *argv;
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while (1) {
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if (flags & VERBOSE) {
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printf("rmdir: removing directory, '%s'\n", path);
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}
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if (rmdir(path) < 0) {
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#if ENABLE_LONG_OPTS
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if ((flags & IGNORE_NON_EMPTY) && errno == ENOTEMPTY)
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break;
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#endif
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bb_perror_msg("'%s'", path); /* Match gnu rmdir msg. */
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status = EXIT_FAILURE;
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} else if (flags & PARENTS) {
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/* Note: path was not "" since rmdir succeeded. */
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path = dirname(path);
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/* Path is now just the parent component. Dirname
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* returns "." if there are no parents.
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*/
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if (NOT_LONE_CHAR(path, '.')) {
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continue;
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}
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}
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break;
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}
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} while (*++argv);
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return status;
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}
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