1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * rfkill implementation for busybox
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4 | *
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5 | * Copyright (C) 2010 Malek Degachi <malek-degachi@laposte.net>
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6 | *
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7 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
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8 | */
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9 | #include "libbb.h"
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10 | #include <linux/rfkill.h>
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11 |
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12 | enum {
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13 | OPT_b = (1 << 0), /* must be = 1 */
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14 | OPT_u = (1 << 1),
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15 | OPT_l = (1 << 2),
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16 | };
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17 |
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18 | int rfkill_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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19 | int rfkill_main(int argc UNUSED_PARAM, char **argv)
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20 | {
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21 | struct rfkill_event event;
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22 | const char *rf_name;
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23 | int rf_fd;
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24 | int mode;
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25 | int rf_type;
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26 | int rf_idx;
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27 | unsigned rf_opt = 0;
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28 |
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29 | argv++;
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30 | /* Must have one or two params */
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31 | if (!argv[0] || (argv[1] && argv[2]))
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32 | bb_show_usage();
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33 |
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34 | mode = O_RDWR | O_NONBLOCK;
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35 | rf_name = argv[1];
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36 | if (strcmp(argv[0], "list") == 0) {
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37 | rf_opt |= OPT_l;
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38 | mode = O_RDONLY | O_NONBLOCK;
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39 | } else if (strcmp(argv[0], "block") == 0 && rf_name) {
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40 | rf_opt |= OPT_b;
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41 | } else if (strcmp(argv[0], "unblock") == 0 && rf_name) {
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42 | rf_opt |= OPT_u;
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43 | } else
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44 | bb_show_usage();
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45 |
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46 | rf_type = RFKILL_TYPE_ALL;
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47 | rf_idx = -1;
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48 | if (rf_name) {
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49 | static const char rfkill_types[] ALIGN1 = "all\0wlan\0bluetooth\0uwb\0wimax\0wwan\0gps\0fm\0";
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50 | if (strcmp(rf_name, "wifi") == 0)
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51 | rf_name = "wlan";
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52 | if (strcmp(rf_name, "ultrawideband") == 0)
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53 | rf_name = "uwb";
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54 | rf_type = index_in_strings(rfkill_types, rf_name);
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55 | if (rf_type < 0) {
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56 | rf_idx = xatoi_positive(rf_name);
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57 | }
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58 | }
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59 |
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60 | rf_fd = device_open("/dev/rfkill", mode);
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61 | if (rf_fd < 0)
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62 | bb_perror_msg_and_die("/dev/rfkill");
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63 |
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64 | if (rf_opt & OPT_l) {
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65 | while (full_read(rf_fd, &event, sizeof(event)) == RFKILL_EVENT_SIZE_V1) {
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66 | parser_t *parser;
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67 | char *tokens[2];
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68 | char rf_sysfs[sizeof("/sys/class/rfkill/rfkill%u/uevent") + sizeof(int)*3];
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69 | char *name, *type;
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70 |
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71 | if (rf_type && rf_type != event.type && rf_idx < 0) {
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72 | continue;
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73 | }
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74 |
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75 | if (rf_idx >= 0 && event.idx != rf_idx) {
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76 | continue;
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77 | }
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78 |
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79 | name = NULL;
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80 | type = NULL;
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81 | sprintf(rf_sysfs, "/sys/class/rfkill/rfkill%u/uevent", event.idx);
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82 | parser = config_open2(rf_sysfs, fopen_for_read);
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83 | while (config_read(parser, tokens, 2, 2, "\n=", PARSE_NORMAL)) {
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84 | if (strcmp(tokens[0], "RFKILL_NAME") == 0) {
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85 | name = xstrdup(tokens[1]);
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86 | continue;
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87 | }
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88 | if (strcmp(tokens[0], "RFKILL_TYPE") == 0) {
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89 | type = xstrdup(tokens[1]);
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90 | continue;
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91 | }
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92 | }
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93 | config_close(parser);
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94 |
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95 | printf("%u: %s: %s\n", event.idx, name, type);
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96 | printf("\tSoft blocked: %s\n", event.soft ? "yes" : "no");
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97 | printf("\tHard blocked: %s\n", event.hard ? "yes" : "no");
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98 | free(name);
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99 | free(type);
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100 | }
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101 | } else {
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102 | memset(&event, 0, sizeof(event));
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103 | if (rf_type >= 0) {
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104 | event.type = rf_type;
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105 | event.op = RFKILL_OP_CHANGE_ALL;
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106 | }
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107 |
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108 | if (rf_idx >= 0) {
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109 | event.idx = rf_idx;
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110 | event.op = RFKILL_OP_CHANGE;
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111 | }
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112 |
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113 | /* Note: OPT_b == 1 */
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114 | event.soft = (rf_opt & OPT_b);
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115 |
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116 | xwrite(rf_fd, &event, sizeof(event));
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117 | }
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118 |
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119 | return EXIT_SUCCESS;
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120 | }
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