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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
174 lines
5.0 KiB
C
174 lines
5.0 KiB
C
/*
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* chcon -- change security context, based on coreutils-5.97-13
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*
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* Port to busybox: KaiGai Kohei <kaigai@kaigai.gr.jp>
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*
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* Copyright (C) 2006 - 2007 KaiGai Kohei <kaigai@kaigai.gr.jp>
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*/
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#include <getopt.h>
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#include <selinux/context.h>
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#include "libbb.h"
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#define OPT_RECURSIVE (1<<0) /* 'R' */
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#define OPT_CHANHES (1<<1) /* 'c' */
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#define OPT_NODEREFERENCE (1<<2) /* 'h' */
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#define OPT_QUIET (1<<3) /* 'f' */
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#define OPT_USER (1<<4) /* 'u' */
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#define OPT_ROLE (1<<5) /* 'r' */
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#define OPT_TYPE (1<<6) /* 't' */
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#define OPT_RANGE (1<<7) /* 'l' */
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#define OPT_VERBOSE (1<<8) /* 'v' */
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#define OPT_REFERENCE ((1<<9) * ENABLE_FEATURE_CHCON_LONG_OPTIONS)
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#define OPT_COMPONENT_SPECIFIED (OPT_USER | OPT_ROLE | OPT_TYPE | OPT_RANGE)
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static char *user = NULL;
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static char *role = NULL;
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static char *type = NULL;
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static char *range = NULL;
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static char *specified_context = NULL;
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static int change_filedir_context(const char *fname, struct stat *stbuf, void *userData, int depth)
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{
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context_t context = NULL;
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security_context_t file_context = NULL;
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security_context_t context_string;
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int rc = FALSE;
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int status = 0;
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if (option_mask32 & OPT_NODEREFERENCE) {
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status = lgetfilecon(fname, &file_context);
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} else {
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status = getfilecon(fname, &file_context);
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}
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if (status < 0 && errno != ENODATA) {
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if ((option_mask32 & OPT_QUIET) == 0)
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bb_error_msg("cannot obtain security context: %s", fname);
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goto skip;
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}
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if (file_context == NULL && specified_context == NULL) {
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bb_error_msg("cannot apply partial context to unlabeled file %s", fname);
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goto skip;
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}
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if (specified_context == NULL) {
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context = set_security_context_component(file_context,
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user, role, type, range);
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if (!context) {
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bb_error_msg("cannot compute security context from %s", file_context);
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goto skip;
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}
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} else {
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context = context_new(specified_context);
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if (!context) {
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bb_error_msg("invalid context: %s", specified_context);
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goto skip;
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}
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}
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context_string = context_str(context);
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if (!context_string) {
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bb_error_msg("cannot obtain security context in text expression");
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goto skip;
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}
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if (file_context == NULL || strcmp(context_string, file_context) != 0) {
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int fail;
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if (option_mask32 & OPT_NODEREFERENCE) {
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fail = lsetfilecon(fname, context_string);
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} else {
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fail = setfilecon(fname, context_string);
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}
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if ((option_mask32 & OPT_VERBOSE) || ((option_mask32 & OPT_CHANHES) && !fail)) {
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printf(!fail
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? "context of %s changed to %s\n"
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: "failed to change context of %s to %s\n",
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fname, context_string);
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}
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if (!fail) {
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rc = TRUE;
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} else if ((option_mask32 & OPT_QUIET) == 0) {
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bb_error_msg("failed to change context of %s to %s",
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fname, context_string);
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}
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} else if (option_mask32 & OPT_VERBOSE) {
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printf("context of %s retained as %s\n", fname, context_string);
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rc = TRUE;
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}
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skip:
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context_free(context);
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freecon(file_context);
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return rc;
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}
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#if ENABLE_FEATURE_CHCON_LONG_OPTIONS
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static const char chcon_longopts[] =
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"recursive\0" No_argument "R"
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"changes\0" No_argument "c"
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"no-dereference\0" No_argument "h"
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"silent\0" No_argument "f"
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"quiet\0" No_argument "f"
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"user\0" Required_argument "u"
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"role\0" Required_argument "r"
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"type\0" Required_argument "t"
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"range\0" Required_argument "l"
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"verbose\0" No_argument "v"
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"reference\0" Required_argument "\xff" /* no short option */
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"\0";
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#endif
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int chcon_main(int argc, char **argv);
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int chcon_main(int argc, char **argv)
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{
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char *reference_file;
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char *fname;
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int i, errors = 0;
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#if ENABLE_FEATURE_CHCON_LONG_OPTIONS
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applet_long_options = chcon_longopts;
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#endif
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opt_complementary = "-1" /* at least 1 param */
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":?" /* error if exclusivity constraints are violated */
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#if ENABLE_FEATURE_CHCON_LONG_OPTIONS
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":\xff--urtl:u--\xff:r--\xff:t--\xff:l--\xff"
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#endif
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":f--v:v--f"; /* 'verbose' and 'quiet' are exclusive */
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getopt32(argc, argv, "Rchf:u:r:t:l:v",
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&user, &role, &type, &range, &reference_file);
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argv += optind;
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#if ENABLE_FEATURE_CHCON_LONG_OPTIONS
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if (option_mask32 & OPT_REFERENCE) {
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/* FIXME: lgetfilecon() should be used when '-h' is specified.
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But current implementation follows the original one. */
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if (getfilecon(reference_file, &specified_context) < 0)
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bb_perror_msg_and_die("getfilecon('%s') failed", reference_file);
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} else
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#endif
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if ((option_mask32 & OPT_COMPONENT_SPECIFIED) == 0) {
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specified_context = *argv++;
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/* specified_context is never NULL -
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* "-1" in opt_complementary prevents this. */
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if (!argv[0])
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bb_error_msg_and_die("too few arguments");
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}
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for (i = 0; (fname = argv[i]) != NULL; i++) {
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int fname_len = strlen(fname);
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while (fname_len > 1 && fname[fname_len - 1] == '/')
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fname_len--;
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fname[fname_len] = '\0';
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if (recursive_action(fname,
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1<<option_mask32 & OPT_RECURSIVE,
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change_filedir_context,
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change_filedir_context,
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NULL, 0) != TRUE)
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errors = 1;
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}
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return errors;
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}
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