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>

5 files changed, 145 insertions, 0 deletions

diff --git a/include/applets.h b/include/applets.h
index 83c1792ac..ef5dd781d 100644
--- a/include/applets.h
+++ b/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))
diff --git a/include/usage.h b/include/usage.h
index 38594811e..2c2a90d16 100644
--- a/include/usage.h
+++ b/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" \
diff --git a/miscutils/Config.in b/miscutils/Config.in
index 0469b6399..7a69dd10f 100644
--- a/miscutils/Config.in
+++ b/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
diff --git a/miscutils/Kbuild b/miscutils/Kbuild
index bbfa93dc7..3c8ce42ba 100644
--- a/miscutils/Kbuild
+++ b/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
diff --git a/miscutils/rfkill.c b/miscutils/rfkill.c
new file mode 100644
index 000000000..0f5817b76
--- /dev/null
+++ b/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;
+}