rfkill: new applet

function                                             old     new   delta
rfkill_main                                            -     683    +683
packed_usage                                       26824   26966    +142
static.rfkill_types                                    -      42     +42
applet_names                                        2216    2223      +7
applet_main                                         1300    1304      +4
applet_nameofs                                       650     652      +2

Signed-off-by: Souf Oued <souf_oued@yahoo.fr>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

include/applets.h

@@ -321,6 +321,7 @@ IF_RENICE(APPLET(renice, _BB_DIR_USR_BIN, _BB_SUID_DROP))
 IF_RESET(APPLET(reset, _BB_DIR_USR_BIN, _BB_SUID_DROP))
 IF_RESIZE(APPLET(resize, _BB_DIR_USR_BIN, _BB_SUID_DROP))
 IF_RESTORECON(APPLET_ODDNAME(restorecon, setfiles, _BB_DIR_SBIN, _BB_SUID_DROP, restorecon))
+IF_RFKILL(APPLET(rfkill, _BB_DIR_USR_SBIN, _BB_SUID_DROP))
 IF_RM(APPLET_NOFORK(rm, rm, _BB_DIR_BIN, _BB_SUID_DROP, rm))
 IF_RMDIR(APPLET_NOFORK(rmdir, rmdir, _BB_DIR_BIN, _BB_SUID_DROP, rmdir))
 IF_RMMOD(APPLET(rmmod, _BB_DIR_SBIN, _BB_SUID_DROP))

include/usage.h

@@ -3738,6 +3738,18 @@
      "\n		for customizable files, or the user section," \
      "\n		if it has changed" \
 
+#define rfkill_trivial_usage \
+       "COMMAND [INDEX|TYPE]"
+#define rfkill_full_usage "\n\n" \
+       "Enable/disable wireless devices\n" \
+       "\nCommands:" \
+     "\n	list [INDEX|TYPE]	List current state" \
+     "\n	block INDEX|TYPE	Disable device" \
+     "\n	unblock INDEX|TYPE	Enable device" \
+     "\n" \
+     "\n	TYPE: all, wlan(wifi), bluetooth, uwb(ultrawideband)," \
+     "\n		wimax, wwan, gps, fm" \
+
 #define rm_trivial_usage \
        "[OPTIONS] FILE..."
 #define rm_full_usage "\n\n" \

miscutils/Config.in

@@ -545,6 +545,17 @@ config READAHEAD
 	  As readahead(2) blocks until each file has been read, it is best to
 	  run this applet as a background job.
 
+config RFKILL
+	bool "rfkill"
+	default n
+	help
+	  Enable/disable wireless devices.
+
+	  rfkill list : list all wireless devices
+	  rfkill list bluetooth : list all bluetooth devices
+	  rfkill list 1 : list device corresponding to the given index
+	  rfkill block|unblock wlan : block/unblock all wlan(wifi) devices
+
 config RUNLEVEL
 	bool "runlevel"
 	default n

miscutils/Kbuild

@@ -34,6 +34,7 @@ lib-$(CONFIG_MOUNTPOINT)  += mountpoint.o
 lib-$(CONFIG_MT)          += mt.o
 lib-$(CONFIG_RAIDAUTORUN) += raidautorun.o
 lib-$(CONFIG_READAHEAD)   += readahead.o
+lib-$(CONFIG_RFKILL)      += rfkill.o
 lib-$(CONFIG_RUNLEVEL)    += runlevel.o
 lib-$(CONFIG_RX)          += rx.o
 lib-$(CONFIG_SETSID)      += setsid.o

miscutils/rfkill.c

@@ -0,0 +1,120 @@
+/* vi: set sw=4 ts=4: */
+/*
+* rfkill implementation for busybox
+*
+* Copyright (C) 2010  Malek Degachi <malek-degachi@laposte.net>
+*
+* Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
+*/
+#include "libbb.h"
+#include <linux/rfkill.h>
+
+enum {
+	OPT_b = (1 << 0), /* must be = 1 */
+	OPT_u = (1 << 1),
+	OPT_l = (1 << 2),
+};
+
+int rfkill_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int rfkill_main(int argc UNUSED_PARAM, char **argv)
+{
+	struct rfkill_event event;
+	const char *rf_name;
+	int rf_fd;
+	int mode;
+	int rf_type;
+	int rf_idx;
+	unsigned rf_opt = 0;
+
+	argv++;
+	/* Must have one or two params */
+	if (!argv[0] || (argv[1] && argv[2]))
+		bb_show_usage();
+
+	mode = O_RDWR | O_NONBLOCK;
+	rf_name = argv[1];
+	if (strcmp(argv[0], "list") == 0) {
+		rf_opt |= OPT_l;
+		mode = O_RDONLY | O_NONBLOCK;
+	} else if (strcmp(argv[0], "block") == 0 && rf_name) {
+		rf_opt |= OPT_b;
+	} else if (strcmp(argv[0], "unblock") == 0 && rf_name) {
+		rf_opt |= OPT_u;
+	} else
+		bb_show_usage();
+
+	rf_type = RFKILL_TYPE_ALL;
+	rf_idx = -1;
+	if (rf_name) {
+		static const char rfkill_types[] ALIGN1 = "all\0wlan\0bluetooth\0uwb\0wimax\0wwan\0gps\0fm\0";
+		if (strcmp(rf_name, "wifi") == 0)
+			rf_name = "wlan";
+		if (strcmp(rf_name, "ultrawideband") == 0)
+			rf_name = "uwb";
+		rf_type = index_in_strings(rfkill_types, rf_name);
+		if (rf_type < 0) {
+			rf_idx = xatoi_u(rf_name);
+		}
+	}
+
+	rf_fd = device_open("/dev/rfkill", mode);
+	if (rf_fd < 0)
+		bb_perror_msg_and_die("/dev/rfkill");
+
+	if (rf_opt & OPT_l) {
+		while (full_read(rf_fd, &event, sizeof(event)) == RFKILL_EVENT_SIZE_V1) {
+			parser_t *parser;
+			char *tokens[2];
+			char rf_sysfs[sizeof("/sys/class/rfkill/rfkill%u/uevent") + sizeof(int)*3];
+			char *name, *type;
+
+			if (rf_type && rf_type != event.type && rf_idx < 0) {
+				continue;
+			}
+
+			if (rf_idx >= 0 && event.idx != rf_idx) {
+				continue;
+			}
+
+			name = NULL;
+			type = NULL;
+			sprintf(rf_sysfs, "/sys/class/rfkill/rfkill%u/uevent", event.idx);
+			parser = config_open2(rf_sysfs, fopen_for_read);
+			while (config_read(parser, tokens, 2, 2, "\n=", PARSE_NORMAL)) {
+				if (strcmp(tokens[0], "RFKILL_NAME") == 0) {
+					name = xstrdup(tokens[1]);
+					continue;
+				}
+				if (strcmp(tokens[0], "RFKILL_TYPE") == 0) {
+					type = xstrdup(tokens[1]);
+					continue;
+				}
+			}
+			config_close(parser);
+
+			printf("%u: %s: %s\n", event.idx, name, type);
+			printf("\tSoft blocked: %s\n", event.soft ? "yes" : "no");
+			printf("\tHard blocked: %s\n", event.hard ? "yes" : "no");
+			free(name);
+			free(type);
+		}
+	} else {
+		memset(&event, 0, sizeof(event));
+		if (rf_type >= 0) {
+			event.type = rf_type;
+			event.op = RFKILL_OP_CHANGE_ALL;
+		}
+
+		if (rf_idx >= 0) {
+			event.idx = rf_idx;
+			event.op = RFKILL_OP_CHANGE;
+		}
+
+		/* Note: OPT_b == 1 */
+		event.soft = (rf_opt & OPT_b);
+
+		xwrite(rf_fd, &event, sizeof(event));
+	}
+
+	return EXIT_SUCCESS;
+}