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annotate toys/pending/rfkill.c @ 1307:8868e482963e draft

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rfkill - enable/disable the radio devices e.g. Wireless adapter, Bluetooth devices...
author Ashwini Sharma <ak.ashwini1981@gmail.com>
date Fri, 23 May 2014 09:00:09 -0500
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children 788c6c097fa2
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1307
8868e482963e rfkill - enable/disable the radio devices
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1 /* rfkill.c - Enable/disable wireless devices.
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2 *
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3 * Copyright 2014 Ranjan Kumar <ranjankumar.bth@gmail.com>
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4 * Copyright 2014 Kyungwan Han <asura321@gmail.com>
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5 *
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6 * No Standard
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7
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8 USE_RFKILL(NEWTOY(rfkill, "<1>2", TOYFLAG_SBIN))
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9
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10 config RFKILL
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11 bool "rfkill"
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12 default n
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13 help
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14 Usage: rfkill COMMAND
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15
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16 Enable/disable wireless devices.
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17
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18 Commands:
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19 list [IDENTIFIER] List current state
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20 block IDENTIFIER Disable device
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21 unblock IDENTIFIER Enable device
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22
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23 where IDENTIFIER is the index no. of an rfkill switch or one of:
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24 <idx> all, wlan(wifi), bluetooth, uwb(ultrawideband), wimax, wwan, gps, fm.
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25 */
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26 #define FOR_rfkill
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27 #include "toys.h"
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28 #include <linux/rfkill.h>
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29
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30 struct arglist {
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31 char *name;
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32 int idx;
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33 };
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34
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35 static int getidx(char ***argv, struct arglist *list)
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36 {
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37 struct arglist *alist;
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38
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39 if (!**argv) return -1;
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40 for (alist = list; alist->name; alist++)
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41 if (!strcmp(**argv, alist->name)) {
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42 *argv += 1;
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43 return alist->idx;
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44 }
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45 return -1;
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46 }
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47
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48 void rfkill_main(void)
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49 {
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50 struct rfkill_event rfevent;
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51 int fd, tvar, idx = -1, tid = RFKILL_TYPE_ALL;
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52 char **optargs = toys.optargs;
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53 struct arglist cmds[] = {{"list", 0}, {"block", 1},
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54 {"unblock", 2}, {NULL, -1}};
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55
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56 if (((tvar = getidx(&optargs, cmds)) < 0) || ((tvar) && !*optargs)) {
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57 toys.exithelp = 1;
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58 (tvar < 0) ? error_exit("cmd missmatch")
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59 : error_exit("%s idx missing", *toys.optargs);
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60 }
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61 if (*optargs) {
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62 struct arglist rftypes[] = {{"all", RFKILL_TYPE_ALL},
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63 {"wifi", RFKILL_TYPE_WLAN}, {"wlan", RFKILL_TYPE_WLAN},
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64 {"bluetooth", RFKILL_TYPE_BLUETOOTH}, {"uwb", RFKILL_TYPE_UWB},
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65 {"ultrawideband", RFKILL_TYPE_UWB}, {"wimax", RFKILL_TYPE_WIMAX},
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66 {"wwan", RFKILL_TYPE_WWAN}, {"gps", RFKILL_TYPE_GPS},
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67 {"fm", 7}, {NULL, -1}}; // RFKILL_TYPE_FM = 7
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68
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69 if ((tid = getidx(&optargs, rftypes)) == -1)
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70 idx = atolx_range(*optargs, 0, INT_MAX);
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71 }
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72 fd = xcreate("/dev/rfkill", (tvar ? O_RDWR : O_RDONLY)|O_NONBLOCK, 0600);
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73 if (tvar) {
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74 memset(&rfevent, 0, sizeof(rfevent));
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75 rfevent.soft = (tvar & 1);
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76 if (tid != -1) {
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77 rfevent.type = tid;
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78 rfevent.op = RFKILL_OP_CHANGE_ALL;
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79 } else if (idx >= 0) {
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80 rfevent.idx = idx;
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81 rfevent.op = RFKILL_OP_CHANGE;
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82 }
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83 xwrite(fd, &rfevent, sizeof(rfevent));
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84 } else { // show list.
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85 while (sizeof(rfevent) == readall(fd, &rfevent, sizeof(rfevent))) {
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86 char *line = NULL, *name = NULL, *type = NULL;
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87
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88 // filter of list items.
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89 if (((tid > 0) && (tid != rfevent.type))
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90 || ((idx != -1) && (idx != rfevent.idx))) continue;
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91 sprintf(toybuf, "/sys/class/rfkill/rfkill%u/uevent", rfevent.idx);
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92 tvar = xopen(toybuf, O_RDONLY);
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93 while ((line = get_line(tvar))) {
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94 if (!strncmp(line, "RFKILL_NAME", strlen("RFKILL_NAME")))
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95 name = xstrdup(strchr(line, '=')+1);
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96 else if (!strncmp(line, "RFKILL_TYPE", strlen("RFKILL_TYPE")))
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97 type = xstrdup(strchr(line, '=')+1);
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98 free(line);
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99 }
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100 xprintf("%u: %s: %s\n", rfevent.idx, name, type);
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101 xprintf("\tSoft blocked: %s\n", rfevent.soft ? "yes" : "no");
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102 xprintf("\tHard blocked: %s\n", rfevent.hard ? "yes" : "no");
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103 xclose(tvar);
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104 free(name), free(type);
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105 }
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106 }
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107 xclose(fd);
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108 }