busybox/coreutils/mkdir.c

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/* vi: set sw=4 ts=4: */
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/*
* Mini mkdir implementation for busybox
*
* Copyright (C) 2001 Matt Kraai <kraai@alumni.carnegiemellon.edu>
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*
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
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*/
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/* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
*
* Fixed broken permission setting when -p was used; especially in
* conjunction with -m.
*/
/* Nov 28, 2006 Yoshinori Sato <ysato@users.sourceforge.jp>: Add SELinux Support.
*/
//config:config MKDIR
//config: bool "mkdir (4.4 kb)"
//config: default y
//config: help
//config: mkdir is used to create directories with the specified names.
//applet:IF_MKDIR(APPLET_NOFORK(mkdir, mkdir, BB_DIR_BIN, BB_SUID_DROP, mkdir))
//kbuild:lib-$(CONFIG_MKDIR) += mkdir.o
/* BB_AUDIT SUSv3 compliant */
/* http://www.opengroup.org/onlinepubs/007904975/utilities/mkdir.html */
//usage:#define mkdir_trivial_usage
//usage: "[OPTIONS] DIRECTORY..."
//usage:#define mkdir_full_usage "\n\n"
//usage: "Create DIRECTORY\n"
//usage: "\n -m MODE Mode"
//usage: "\n -p No error if exists; make parent directories as needed"
//usage: IF_SELINUX(
//usage: "\n -Z Set security context"
//usage: )
//usage:
//usage:#define mkdir_example_usage
//usage: "$ mkdir /tmp/foo\n"
//usage: "$ mkdir /tmp/foo\n"
//usage: "/tmp/foo: File exists\n"
//usage: "$ mkdir /tmp/foo/bar/baz\n"
//usage: "/tmp/foo/bar/baz: No such file or directory\n"
//usage: "$ mkdir -p /tmp/foo/bar/baz\n"
#include "libbb.h"
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/* This is a NOFORK applet. Be very careful! */
int mkdir_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int mkdir_main(int argc UNUSED_PARAM, char **argv)
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{
long mode = -1;
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int status = EXIT_SUCCESS;
int flags = 0;
unsigned opt;
char *smode;
#if ENABLE_SELINUX
security_context_t scontext;
#endif
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getopt32: remove applet_long_options 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>
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opt = getopt32long(argv, "m:pv" IF_SELINUX("Z:"),
"mode\0" Required_argument "m"
"parents\0" No_argument "p"
# if ENABLE_SELINUX
"context\0" Required_argument "Z"
# endif
# if ENABLE_FEATURE_VERBOSE
"verbose\0" No_argument "v"
# endif
, &smode IF_SELINUX(,&scontext)
);
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if (opt & 1) {
mode_t mmode = bb_parse_mode(smode, 0777);
if (mmode == (mode_t)-1) {
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bb_error_msg_and_die("invalid mode '%s'", smode);
}
mode = mmode;
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}
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if (opt & 2)
flags |= FILEUTILS_RECUR;
if ((opt & 4) && FILEUTILS_VERBOSE)
flags |= FILEUTILS_VERBOSE;
#if ENABLE_SELINUX
if (opt & 8) {
selinux_or_die();
setfscreatecon_or_die(scontext);
}
#endif
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argv += optind;
if (!argv[0])
bb_show_usage();
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do {
if (bb_make_directory(*argv, mode, flags)) {
status = EXIT_FAILURE;
}
} while (*++argv);
return status;
}