1 | /*
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2 | * Copyright (c) 2007 Josef Cejka
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3 | * Copyright (c) 2011 Jiri Svoboda
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4 | * All rights reserved.
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5 | *
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6 | * Redistribution and use in source and binary forms, with or without
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7 | * modification, are permitted provided that the following conditions
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8 | * are met:
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9 | *
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10 | * - Redistributions of source code must retain the above copyright
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11 | * notice, this list of conditions and the following disclaimer.
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12 | * - Redistributions in binary form must reproduce the above copyright
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13 | * notice, this list of conditions and the following disclaimer in the
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14 | * documentation and/or other materials provided with the distribution.
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15 | * - The name of the author may not be used to endorse or promote products
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16 | * derived from this software without specific prior written permission.
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17 | *
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18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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28 | */
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29 |
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30 | #include <str.h>
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31 | #include <ipc/services.h>
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32 | #include <ns.h>
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33 | #include <ipc/loc.h>
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34 | #include <loc.h>
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35 | #include <fibril_synch.h>
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36 | #include <async.h>
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37 | #include <errno.h>
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38 | #include <malloc.h>
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39 | #include <stdbool.h>
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40 |
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41 | static FIBRIL_MUTEX_INITIALIZE(loc_supp_block_mutex);
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42 | static FIBRIL_MUTEX_INITIALIZE(loc_cons_block_mutex);
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43 |
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44 | static FIBRIL_MUTEX_INITIALIZE(loc_supplier_mutex);
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45 | static FIBRIL_MUTEX_INITIALIZE(loc_consumer_mutex);
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46 |
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47 | static FIBRIL_MUTEX_INITIALIZE(loc_callback_mutex);
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48 | static bool loc_callback_created = false;
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49 | static loc_cat_change_cb_t cat_change_cb = NULL;
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50 |
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51 | static async_sess_t *loc_supp_block_sess = NULL;
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52 | static async_sess_t *loc_cons_block_sess = NULL;
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53 |
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54 | static async_sess_t *loc_supplier_sess = NULL;
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55 | static async_sess_t *loc_consumer_sess = NULL;
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56 |
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57 | static void loc_cb_conn(ipc_callid_t iid, ipc_call_t *icall, void *arg)
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58 | {
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59 | while (true) {
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60 | ipc_call_t call;
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61 | ipc_callid_t callid = async_get_call(&call);
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62 |
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63 | if (!IPC_GET_IMETHOD(call)) {
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64 | /* TODO: Handle hangup */
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65 | return;
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66 | }
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67 |
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68 | switch (IPC_GET_IMETHOD(call)) {
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69 | case LOC_EVENT_CAT_CHANGE:
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70 | fibril_mutex_lock(&loc_callback_mutex);
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71 | loc_cat_change_cb_t cb_fun = cat_change_cb;
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72 | fibril_mutex_unlock(&loc_callback_mutex);
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73 |
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74 | async_answer_0(callid, EOK);
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75 |
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76 | if (cb_fun != NULL)
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77 | (*cb_fun)();
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78 |
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79 | break;
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80 | default:
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81 | async_answer_0(callid, ENOTSUP);
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82 | }
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83 | }
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84 | }
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85 |
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86 |
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87 | static void clone_session(fibril_mutex_t *mtx, async_sess_t *src,
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88 | async_sess_t **dst)
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89 | {
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90 | fibril_mutex_lock(mtx);
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91 |
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92 | if ((*dst == NULL) && (src != NULL))
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93 | *dst = src;
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94 |
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95 | fibril_mutex_unlock(mtx);
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96 | }
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97 |
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98 | /** Create callback
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99 | *
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100 | * Must be called with loc_callback_mutex locked.
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101 | *
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102 | * @return EOK on success.
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103 | *
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104 | */
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105 | static int loc_callback_create(void)
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106 | {
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107 | if (!loc_callback_created) {
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108 | async_exch_t *exch =
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109 | loc_exchange_begin_blocking(INTERFACE_LOC_CONSUMER);
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110 |
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111 | ipc_call_t answer;
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112 | aid_t req = async_send_0(exch, LOC_CALLBACK_CREATE, &answer);
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113 |
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114 | port_id_t port;
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115 | int rc = async_create_callback_port(exch, INTERFACE_LOC_CB, 0, 0,
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116 | loc_cb_conn, NULL, &port);
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117 |
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118 | loc_exchange_end(exch);
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119 |
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120 | if (rc != EOK)
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121 | return rc;
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122 |
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123 | sysarg_t retval;
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124 | async_wait_for(req, &retval);
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125 | if (retval != EOK)
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126 | return retval;
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127 |
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128 | loc_callback_created = true;
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129 | }
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130 |
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131 | return EOK;
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132 | }
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133 |
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134 | /** Start an async exchange on the loc session (blocking).
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135 | *
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136 | * @param iface Location service interface to choose
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137 | *
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138 | * @return New exchange.
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139 | *
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140 | */
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141 | async_exch_t *loc_exchange_begin_blocking(iface_t iface)
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142 | {
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143 | switch (iface) {
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144 | case INTERFACE_LOC_SUPPLIER:
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145 | fibril_mutex_lock(&loc_supp_block_mutex);
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146 |
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147 | while (loc_supp_block_sess == NULL) {
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148 | clone_session(&loc_supplier_mutex, loc_supplier_sess,
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149 | &loc_supp_block_sess);
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150 |
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151 | if (loc_supp_block_sess == NULL)
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152 | loc_supp_block_sess =
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153 | service_connect_blocking(SERVICE_LOC,
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154 | INTERFACE_LOC_SUPPLIER, 0);
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155 | }
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156 |
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157 | fibril_mutex_unlock(&loc_supp_block_mutex);
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158 |
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159 | clone_session(&loc_supplier_mutex, loc_supp_block_sess,
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160 | &loc_supplier_sess);
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161 |
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162 | return async_exchange_begin(loc_supp_block_sess);
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163 | case INTERFACE_LOC_CONSUMER:
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164 | fibril_mutex_lock(&loc_cons_block_mutex);
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165 |
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166 | while (loc_cons_block_sess == NULL) {
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167 | clone_session(&loc_consumer_mutex, loc_consumer_sess,
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168 | &loc_cons_block_sess);
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169 |
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170 | if (loc_cons_block_sess == NULL)
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171 | loc_cons_block_sess =
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172 | service_connect_blocking(SERVICE_LOC,
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173 | INTERFACE_LOC_CONSUMER, 0);
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174 | }
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175 |
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176 | fibril_mutex_unlock(&loc_cons_block_mutex);
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177 |
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178 | clone_session(&loc_consumer_mutex, loc_cons_block_sess,
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179 | &loc_consumer_sess);
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180 |
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181 | return async_exchange_begin(loc_cons_block_sess);
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182 | default:
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183 | return NULL;
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184 | }
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185 | }
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186 |
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187 | /** Start an async exchange on the loc session.
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188 | *
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189 | * @param iface Location service interface to choose
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190 | *
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191 | * @return New exchange.
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192 | *
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193 | */
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194 | async_exch_t *loc_exchange_begin(iface_t iface)
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195 | {
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196 | switch (iface) {
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197 | case INTERFACE_LOC_SUPPLIER:
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198 | fibril_mutex_lock(&loc_supplier_mutex);
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199 |
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200 | if (loc_supplier_sess == NULL)
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201 | loc_supplier_sess =
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202 | service_connect(SERVICE_LOC,
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203 | INTERFACE_LOC_SUPPLIER, 0);
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204 |
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205 | fibril_mutex_unlock(&loc_supplier_mutex);
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206 |
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207 | if (loc_supplier_sess == NULL)
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208 | return NULL;
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209 |
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210 | return async_exchange_begin(loc_supplier_sess);
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211 | case INTERFACE_LOC_CONSUMER:
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212 | fibril_mutex_lock(&loc_consumer_mutex);
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213 |
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214 | if (loc_consumer_sess == NULL)
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215 | loc_consumer_sess =
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216 | service_connect(SERVICE_LOC,
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217 | INTERFACE_LOC_CONSUMER, 0);
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218 |
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219 | fibril_mutex_unlock(&loc_consumer_mutex);
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220 |
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221 | if (loc_consumer_sess == NULL)
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222 | return NULL;
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223 |
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224 | return async_exchange_begin(loc_consumer_sess);
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225 | default:
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226 | return NULL;
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227 | }
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228 | }
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229 |
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230 | /** Finish an async exchange on the loc session.
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231 | *
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232 | * @param exch Exchange to be finished.
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233 | *
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234 | */
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235 | void loc_exchange_end(async_exch_t *exch)
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236 | {
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237 | async_exchange_end(exch);
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238 | }
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239 |
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240 | /** Register new driver with loc. */
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241 | int loc_server_register(const char *name)
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242 | {
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243 | async_exch_t *exch = loc_exchange_begin_blocking(INTERFACE_LOC_SUPPLIER);
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244 |
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245 | ipc_call_t answer;
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246 | aid_t req = async_send_2(exch, LOC_SERVER_REGISTER, 0, 0, &answer);
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247 | sysarg_t retval = async_data_write_start(exch, name, str_size(name));
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248 |
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249 | loc_exchange_end(exch);
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250 |
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251 | if (retval != EOK) {
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252 | async_forget(req);
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253 | return retval;
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254 | }
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255 |
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256 | exch = loc_exchange_begin(INTERFACE_LOC_SUPPLIER);
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257 | async_connect_to_me(exch, 0, 0, 0);
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258 | loc_exchange_end(exch);
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259 |
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260 | async_wait_for(req, &retval);
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261 | return retval;
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262 | }
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263 |
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264 | /** Register new service.
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265 | *
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266 | * @param fqsn Fully qualified service name
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267 | * @param[out] sid Service ID of new service
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268 | *
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269 | */
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270 | int loc_service_register(const char *fqsn, service_id_t *sid)
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271 | {
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272 | async_exch_t *exch = loc_exchange_begin_blocking(INTERFACE_LOC_SUPPLIER);
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273 |
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274 | ipc_call_t answer;
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275 | aid_t req = async_send_0(exch, LOC_SERVICE_REGISTER, &answer);
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276 | sysarg_t retval = async_data_write_start(exch, fqsn, str_size(fqsn));
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277 |
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278 | loc_exchange_end(exch);
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279 |
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280 | if (retval != EOK) {
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281 | async_forget(req);
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282 | return retval;
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283 | }
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284 |
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285 | async_wait_for(req, &retval);
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286 |
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287 | if (retval != EOK) {
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288 | if (sid != NULL)
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289 | *sid = -1;
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290 |
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291 | return retval;
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292 | }
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293 |
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294 | if (sid != NULL)
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295 | *sid = (service_id_t) IPC_GET_ARG1(answer);
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296 |
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297 | return retval;
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298 | }
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299 |
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300 | /** Unregister service.
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301 | *
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302 | * @param sid Service ID
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303 | */
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304 | int loc_service_unregister(service_id_t sid)
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305 | {
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306 | async_exch_t *exch;
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307 | sysarg_t retval;
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308 |
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309 | exch = loc_exchange_begin_blocking(INTERFACE_LOC_SUPPLIER);
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310 | retval = async_req_1_0(exch, LOC_SERVICE_UNREGISTER, sid);
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311 | loc_exchange_end(exch);
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312 |
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313 | return (int)retval;
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314 | }
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315 |
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316 | int loc_service_get_id(const char *fqdn, service_id_t *handle,
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317 | unsigned int flags)
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318 | {
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319 | async_exch_t *exch;
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320 |
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321 | if (flags & IPC_FLAG_BLOCKING)
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322 | exch = loc_exchange_begin_blocking(INTERFACE_LOC_CONSUMER);
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323 | else {
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324 | exch = loc_exchange_begin(INTERFACE_LOC_CONSUMER);
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325 | if (exch == NULL)
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326 | return errno;
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327 | }
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328 |
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329 | ipc_call_t answer;
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330 | aid_t req = async_send_2(exch, LOC_SERVICE_GET_ID, flags, 0,
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331 | &answer);
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332 | sysarg_t retval = async_data_write_start(exch, fqdn, str_size(fqdn));
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333 |
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334 | loc_exchange_end(exch);
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335 |
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336 | if (retval != EOK) {
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337 | async_forget(req);
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338 | return retval;
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339 | }
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340 |
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341 | async_wait_for(req, &retval);
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342 |
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343 | if (retval != EOK) {
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344 | if (handle != NULL)
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345 | *handle = (service_id_t) -1;
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346 |
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347 | return retval;
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348 | }
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349 |
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350 | if (handle != NULL)
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351 | *handle = (service_id_t) IPC_GET_ARG1(answer);
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352 |
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353 | return retval;
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354 | }
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355 |
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356 | /** Get object name.
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357 | *
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358 | * Provided ID of an object, return its name.
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359 | *
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360 | * @param method IPC method
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361 | * @param id Object ID
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362 | * @param name Place to store pointer to new string. Caller should
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363 | * free it using free().
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364 | * @return EOK on success or negative error code
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365 | */
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366 | static int loc_get_name_internal(sysarg_t method, sysarg_t id, char **name)
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367 | {
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368 | async_exch_t *exch;
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369 | char name_buf[LOC_NAME_MAXLEN + 1];
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370 | ipc_call_t dreply;
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371 | size_t act_size;
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372 | sysarg_t dretval;
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373 |
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374 | *name = NULL;
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375 | exch = loc_exchange_begin_blocking(INTERFACE_LOC_CONSUMER);
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376 |
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377 | ipc_call_t answer;
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378 | aid_t req = async_send_1(exch, method, id, &answer);
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379 | aid_t dreq = async_data_read(exch, name_buf, LOC_NAME_MAXLEN,
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380 | &dreply);
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381 | async_wait_for(dreq, &dretval);
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382 |
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383 | loc_exchange_end(exch);
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384 |
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385 | if (dretval != EOK) {
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386 | async_forget(req);
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387 | return dretval;
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388 | }
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389 |
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390 | sysarg_t retval;
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391 | async_wait_for(req, &retval);
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392 |
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393 | if (retval != EOK)
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394 | return retval;
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395 |
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396 | act_size = IPC_GET_ARG2(dreply);
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397 | assert(act_size <= LOC_NAME_MAXLEN);
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398 | name_buf[act_size] = '\0';
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399 |
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400 | *name = str_dup(name_buf);
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401 | if (*name == NULL)
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402 | return ENOMEM;
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403 |
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404 | return EOK;
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405 | }
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406 |
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407 | /** Get category name.
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408 | *
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409 | * Provided ID of a service, return its name.
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410 | *
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411 | * @param cat_id Category ID
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412 | * @param name Place to store pointer to new string. Caller should
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413 | * free it using free().
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414 | * @return EOK on success or negative error code
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415 | */
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416 | int loc_category_get_name(category_id_t cat_id, char **name)
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417 | {
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418 | return loc_get_name_internal(LOC_CATEGORY_GET_NAME, cat_id, name);
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419 | }
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420 |
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421 | /** Get service name.
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422 | *
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423 | * Provided ID of a service, return its name.
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424 | *
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425 | * @param svc_id Service ID
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426 | * @param name Place to store pointer to new string. Caller should
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427 | * free it using free().
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428 | * @return EOK on success or negative error code
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429 | */
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430 | int loc_service_get_name(service_id_t svc_id, char **name)
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431 | {
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432 | return loc_get_name_internal(LOC_SERVICE_GET_NAME, svc_id, name);
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433 | }
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434 |
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435 | /** Get service server name.
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436 | *
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437 | * Provided ID of a service, return the name of its server.
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438 | *
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439 | * @param svc_id Service ID
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440 | * @param name Place to store pointer to new string. Caller should
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441 | * free it using free().
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442 | * @return EOK on success or negative error code
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443 | */
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444 | int loc_service_get_server_name(service_id_t svc_id, char **name)
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445 | {
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446 | return loc_get_name_internal(LOC_SERVICE_GET_SERVER_NAME, svc_id, name);
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447 | }
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448 |
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449 | int loc_namespace_get_id(const char *name, service_id_t *handle,
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450 | unsigned int flags)
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451 | {
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452 | async_exch_t *exch;
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453 |
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454 | if (flags & IPC_FLAG_BLOCKING)
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455 | exch = loc_exchange_begin_blocking(INTERFACE_LOC_CONSUMER);
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456 | else {
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457 | exch = loc_exchange_begin(INTERFACE_LOC_CONSUMER);
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458 | if (exch == NULL)
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459 | return errno;
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460 | }
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461 |
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462 | ipc_call_t answer;
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463 | aid_t req = async_send_2(exch, LOC_NAMESPACE_GET_ID, flags, 0,
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464 | &answer);
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465 | sysarg_t retval = async_data_write_start(exch, name, str_size(name));
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466 |
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467 | loc_exchange_end(exch);
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468 |
|
---|
469 | if (retval != EOK) {
|
---|
470 | async_forget(req);
|
---|
471 | return retval;
|
---|
472 | }
|
---|
473 |
|
---|
474 | async_wait_for(req, &retval);
|
---|
475 |
|
---|
476 | if (retval != EOK) {
|
---|
477 | if (handle != NULL)
|
---|
478 | *handle = (service_id_t) -1;
|
---|
479 |
|
---|
480 | return retval;
|
---|
481 | }
|
---|
482 |
|
---|
483 | if (handle != NULL)
|
---|
484 | *handle = (service_id_t) IPC_GET_ARG1(answer);
|
---|
485 |
|
---|
486 | return retval;
|
---|
487 | }
|
---|
488 |
|
---|
489 | /** Get category ID.
|
---|
490 | *
|
---|
491 | * Provided name of a category, return its ID.
|
---|
492 | *
|
---|
493 | * @param name Category name
|
---|
494 | * @param cat_id Place to store ID
|
---|
495 | * @param flags IPC_FLAG_BLOCKING to wait for location service to start
|
---|
496 | * @return EOK on success or negative error code
|
---|
497 | */
|
---|
498 | int loc_category_get_id(const char *name, category_id_t *cat_id,
|
---|
499 | unsigned int flags)
|
---|
500 | {
|
---|
501 | async_exch_t *exch;
|
---|
502 |
|
---|
503 | if (flags & IPC_FLAG_BLOCKING)
|
---|
504 | exch = loc_exchange_begin_blocking(INTERFACE_LOC_CONSUMER);
|
---|
505 | else {
|
---|
506 | exch = loc_exchange_begin(INTERFACE_LOC_CONSUMER);
|
---|
507 | if (exch == NULL)
|
---|
508 | return errno;
|
---|
509 | }
|
---|
510 |
|
---|
511 | ipc_call_t answer;
|
---|
512 | aid_t req = async_send_0(exch, LOC_CATEGORY_GET_ID,
|
---|
513 | &answer);
|
---|
514 | sysarg_t retval = async_data_write_start(exch, name, str_size(name));
|
---|
515 |
|
---|
516 | loc_exchange_end(exch);
|
---|
517 |
|
---|
518 | if (retval != EOK) {
|
---|
519 | async_forget(req);
|
---|
520 | return retval;
|
---|
521 | }
|
---|
522 |
|
---|
523 | async_wait_for(req, &retval);
|
---|
524 |
|
---|
525 | if (retval != EOK) {
|
---|
526 | if (cat_id != NULL)
|
---|
527 | *cat_id = (category_id_t) -1;
|
---|
528 |
|
---|
529 | return retval;
|
---|
530 | }
|
---|
531 |
|
---|
532 | if (cat_id != NULL)
|
---|
533 | *cat_id = (category_id_t) IPC_GET_ARG1(answer);
|
---|
534 |
|
---|
535 | return retval;
|
---|
536 | }
|
---|
537 |
|
---|
538 |
|
---|
539 | loc_object_type_t loc_id_probe(service_id_t handle)
|
---|
540 | {
|
---|
541 | async_exch_t *exch = loc_exchange_begin_blocking(INTERFACE_LOC_CONSUMER);
|
---|
542 |
|
---|
543 | sysarg_t type;
|
---|
544 | int retval = async_req_1_1(exch, LOC_ID_PROBE, handle, &type);
|
---|
545 |
|
---|
546 | loc_exchange_end(exch);
|
---|
547 |
|
---|
548 | if (retval != EOK)
|
---|
549 | return LOC_OBJECT_NONE;
|
---|
550 |
|
---|
551 | return (loc_object_type_t) type;
|
---|
552 | }
|
---|
553 |
|
---|
554 | async_sess_t *loc_service_connect(service_id_t handle, iface_t iface,
|
---|
555 | unsigned int flags)
|
---|
556 | {
|
---|
557 | async_sess_t *sess;
|
---|
558 |
|
---|
559 | if (flags & IPC_FLAG_BLOCKING)
|
---|
560 | sess = service_connect_blocking(SERVICE_LOC, iface, handle);
|
---|
561 | else
|
---|
562 | sess = service_connect(SERVICE_LOC, iface, handle);
|
---|
563 |
|
---|
564 | return sess;
|
---|
565 | }
|
---|
566 |
|
---|
567 | int loc_null_create(void)
|
---|
568 | {
|
---|
569 | async_exch_t *exch = loc_exchange_begin_blocking(INTERFACE_LOC_CONSUMER);
|
---|
570 |
|
---|
571 | sysarg_t null_id;
|
---|
572 | int retval = async_req_0_1(exch, LOC_NULL_CREATE, &null_id);
|
---|
573 |
|
---|
574 | loc_exchange_end(exch);
|
---|
575 |
|
---|
576 | if (retval != EOK)
|
---|
577 | return -1;
|
---|
578 |
|
---|
579 | return (int) null_id;
|
---|
580 | }
|
---|
581 |
|
---|
582 | void loc_null_destroy(int null_id)
|
---|
583 | {
|
---|
584 | async_exch_t *exch = loc_exchange_begin_blocking(INTERFACE_LOC_CONSUMER);
|
---|
585 | async_req_1_0(exch, LOC_NULL_DESTROY, (sysarg_t) null_id);
|
---|
586 | loc_exchange_end(exch);
|
---|
587 | }
|
---|
588 |
|
---|
589 | static size_t loc_count_namespaces_internal(async_exch_t *exch)
|
---|
590 | {
|
---|
591 | sysarg_t count;
|
---|
592 | int retval = async_req_0_1(exch, LOC_GET_NAMESPACE_COUNT, &count);
|
---|
593 | if (retval != EOK)
|
---|
594 | return 0;
|
---|
595 |
|
---|
596 | return count;
|
---|
597 | }
|
---|
598 |
|
---|
599 | /** Add service to category.
|
---|
600 | *
|
---|
601 | * @param svc_id Service ID
|
---|
602 | * @param cat_id Category ID
|
---|
603 | * @return EOK on success or negative error code
|
---|
604 | */
|
---|
605 | int loc_service_add_to_cat(service_id_t svc_id, service_id_t cat_id)
|
---|
606 | {
|
---|
607 | async_exch_t *exch;
|
---|
608 | sysarg_t retval;
|
---|
609 |
|
---|
610 | exch = loc_exchange_begin_blocking(INTERFACE_LOC_SUPPLIER);
|
---|
611 | retval = async_req_2_0(exch, LOC_SERVICE_ADD_TO_CAT, svc_id, cat_id);
|
---|
612 | loc_exchange_end(exch);
|
---|
613 |
|
---|
614 | return retval;
|
---|
615 | }
|
---|
616 |
|
---|
617 | static size_t loc_count_services_internal(async_exch_t *exch,
|
---|
618 | service_id_t ns_handle)
|
---|
619 | {
|
---|
620 | sysarg_t count;
|
---|
621 | int retval = async_req_1_1(exch, LOC_GET_SERVICE_COUNT, ns_handle,
|
---|
622 | &count);
|
---|
623 | if (retval != EOK)
|
---|
624 | return 0;
|
---|
625 |
|
---|
626 | return count;
|
---|
627 | }
|
---|
628 |
|
---|
629 | size_t loc_count_namespaces(void)
|
---|
630 | {
|
---|
631 | async_exch_t *exch = loc_exchange_begin_blocking(INTERFACE_LOC_CONSUMER);
|
---|
632 | size_t size = loc_count_namespaces_internal(exch);
|
---|
633 | loc_exchange_end(exch);
|
---|
634 |
|
---|
635 | return size;
|
---|
636 | }
|
---|
637 |
|
---|
638 | size_t loc_count_services(service_id_t ns_handle)
|
---|
639 | {
|
---|
640 | async_exch_t *exch = loc_exchange_begin_blocking(INTERFACE_LOC_CONSUMER);
|
---|
641 | size_t size = loc_count_services_internal(exch, ns_handle);
|
---|
642 | loc_exchange_end(exch);
|
---|
643 |
|
---|
644 | return size;
|
---|
645 | }
|
---|
646 |
|
---|
647 | size_t loc_get_namespaces(loc_sdesc_t **data)
|
---|
648 | {
|
---|
649 | /* Loop until read is succesful */
|
---|
650 | while (true) {
|
---|
651 | async_exch_t *exch = loc_exchange_begin_blocking(INTERFACE_LOC_CONSUMER);
|
---|
652 | size_t count = loc_count_namespaces_internal(exch);
|
---|
653 | loc_exchange_end(exch);
|
---|
654 |
|
---|
655 | if (count == 0)
|
---|
656 | return 0;
|
---|
657 |
|
---|
658 | loc_sdesc_t *devs = (loc_sdesc_t *) calloc(count, sizeof(loc_sdesc_t));
|
---|
659 | if (devs == NULL)
|
---|
660 | return 0;
|
---|
661 |
|
---|
662 | exch = loc_exchange_begin(INTERFACE_LOC_CONSUMER);
|
---|
663 |
|
---|
664 | ipc_call_t answer;
|
---|
665 | aid_t req = async_send_0(exch, LOC_GET_NAMESPACES, &answer);
|
---|
666 | int rc = async_data_read_start(exch, devs, count * sizeof(loc_sdesc_t));
|
---|
667 |
|
---|
668 | loc_exchange_end(exch);
|
---|
669 |
|
---|
670 | if (rc == EOVERFLOW) {
|
---|
671 | /*
|
---|
672 | * Number of namespaces has changed since
|
---|
673 | * the last call of LOC_GET_NAMESPACE_COUNT
|
---|
674 | */
|
---|
675 | free(devs);
|
---|
676 | continue;
|
---|
677 | }
|
---|
678 |
|
---|
679 | if (rc != EOK) {
|
---|
680 | async_forget(req);
|
---|
681 | free(devs);
|
---|
682 | return 0;
|
---|
683 | }
|
---|
684 |
|
---|
685 | sysarg_t retval;
|
---|
686 | async_wait_for(req, &retval);
|
---|
687 |
|
---|
688 | if (retval != EOK)
|
---|
689 | return 0;
|
---|
690 |
|
---|
691 | *data = devs;
|
---|
692 | return count;
|
---|
693 | }
|
---|
694 | }
|
---|
695 |
|
---|
696 | size_t loc_get_services(service_id_t ns_handle, loc_sdesc_t **data)
|
---|
697 | {
|
---|
698 | /* Loop until read is succesful */
|
---|
699 | while (true) {
|
---|
700 | async_exch_t *exch = loc_exchange_begin_blocking(INTERFACE_LOC_CONSUMER);
|
---|
701 | size_t count = loc_count_services_internal(exch, ns_handle);
|
---|
702 | loc_exchange_end(exch);
|
---|
703 |
|
---|
704 | if (count == 0)
|
---|
705 | return 0;
|
---|
706 |
|
---|
707 | loc_sdesc_t *devs = (loc_sdesc_t *) calloc(count, sizeof(loc_sdesc_t));
|
---|
708 | if (devs == NULL)
|
---|
709 | return 0;
|
---|
710 |
|
---|
711 | exch = loc_exchange_begin(INTERFACE_LOC_CONSUMER);
|
---|
712 |
|
---|
713 | ipc_call_t answer;
|
---|
714 | aid_t req = async_send_1(exch, LOC_GET_SERVICES, ns_handle, &answer);
|
---|
715 | int rc = async_data_read_start(exch, devs, count * sizeof(loc_sdesc_t));
|
---|
716 |
|
---|
717 | loc_exchange_end(exch);
|
---|
718 |
|
---|
719 | if (rc == EOVERFLOW) {
|
---|
720 | /*
|
---|
721 | * Number of services has changed since
|
---|
722 | * the last call of LOC_GET_SERVICE_COUNT
|
---|
723 | */
|
---|
724 | free(devs);
|
---|
725 | continue;
|
---|
726 | }
|
---|
727 |
|
---|
728 | if (rc != EOK) {
|
---|
729 | async_forget(req);
|
---|
730 | free(devs);
|
---|
731 | return 0;
|
---|
732 | }
|
---|
733 |
|
---|
734 | sysarg_t retval;
|
---|
735 | async_wait_for(req, &retval);
|
---|
736 |
|
---|
737 | if (retval != EOK)
|
---|
738 | return 0;
|
---|
739 |
|
---|
740 | *data = devs;
|
---|
741 | return count;
|
---|
742 | }
|
---|
743 | }
|
---|
744 |
|
---|
745 | static int loc_category_get_ids_once(sysarg_t method, sysarg_t arg1,
|
---|
746 | sysarg_t *id_buf, size_t buf_size, size_t *act_size)
|
---|
747 | {
|
---|
748 | async_exch_t *exch = loc_exchange_begin_blocking(INTERFACE_LOC_CONSUMER);
|
---|
749 |
|
---|
750 | ipc_call_t answer;
|
---|
751 | aid_t req = async_send_1(exch, method, arg1, &answer);
|
---|
752 | int rc = async_data_read_start(exch, id_buf, buf_size);
|
---|
753 |
|
---|
754 | loc_exchange_end(exch);
|
---|
755 |
|
---|
756 | if (rc != EOK) {
|
---|
757 | async_forget(req);
|
---|
758 | return rc;
|
---|
759 | }
|
---|
760 |
|
---|
761 | sysarg_t retval;
|
---|
762 | async_wait_for(req, &retval);
|
---|
763 |
|
---|
764 | if (retval != EOK) {
|
---|
765 | return retval;
|
---|
766 | }
|
---|
767 |
|
---|
768 | *act_size = IPC_GET_ARG1(answer);
|
---|
769 | return EOK;
|
---|
770 | }
|
---|
771 |
|
---|
772 | /** Get list of IDs.
|
---|
773 | *
|
---|
774 | * Returns an allocated array of service IDs.
|
---|
775 | *
|
---|
776 | * @param method IPC method
|
---|
777 | * @param arg1 IPC argument 1
|
---|
778 | * @param data Place to store pointer to array of IDs
|
---|
779 | * @param count Place to store number of IDs
|
---|
780 | * @return EOK on success or negative error code
|
---|
781 | */
|
---|
782 | static int loc_get_ids_internal(sysarg_t method, sysarg_t arg1,
|
---|
783 | sysarg_t **data, size_t *count)
|
---|
784 | {
|
---|
785 | *data = NULL;
|
---|
786 | *count = 0;
|
---|
787 |
|
---|
788 | size_t act_size = 0;
|
---|
789 | int rc = loc_category_get_ids_once(method, arg1, NULL, 0,
|
---|
790 | &act_size);
|
---|
791 | if (rc != EOK)
|
---|
792 | return rc;
|
---|
793 |
|
---|
794 | size_t alloc_size = act_size;
|
---|
795 | service_id_t *ids = malloc(alloc_size);
|
---|
796 | if (ids == NULL)
|
---|
797 | return ENOMEM;
|
---|
798 |
|
---|
799 | while (true) {
|
---|
800 | rc = loc_category_get_ids_once(method, arg1, ids, alloc_size,
|
---|
801 | &act_size);
|
---|
802 | if (rc != EOK)
|
---|
803 | return rc;
|
---|
804 |
|
---|
805 | if (act_size <= alloc_size)
|
---|
806 | break;
|
---|
807 |
|
---|
808 | alloc_size = act_size;
|
---|
809 | ids = realloc(ids, alloc_size);
|
---|
810 | if (ids == NULL)
|
---|
811 | return ENOMEM;
|
---|
812 | }
|
---|
813 |
|
---|
814 | *count = act_size / sizeof(category_id_t);
|
---|
815 | *data = ids;
|
---|
816 | return EOK;
|
---|
817 | }
|
---|
818 |
|
---|
819 | /** Get list of services in category.
|
---|
820 | *
|
---|
821 | * Returns an allocated array of service IDs.
|
---|
822 | *
|
---|
823 | * @param cat_id Category ID
|
---|
824 | * @param data Place to store pointer to array of IDs
|
---|
825 | * @param count Place to store number of IDs
|
---|
826 | * @return EOK on success or negative error code
|
---|
827 | */
|
---|
828 | int loc_category_get_svcs(category_id_t cat_id, service_id_t **data,
|
---|
829 | size_t *count)
|
---|
830 | {
|
---|
831 | return loc_get_ids_internal(LOC_CATEGORY_GET_SVCS, cat_id,
|
---|
832 | data, count);
|
---|
833 | }
|
---|
834 |
|
---|
835 | /** Get list of categories.
|
---|
836 | *
|
---|
837 | * Returns an allocated array of category IDs.
|
---|
838 | *
|
---|
839 | * @param data Place to store pointer to array of IDs
|
---|
840 | * @param count Place to store number of IDs
|
---|
841 | * @return EOK on success or negative error code
|
---|
842 | */
|
---|
843 | int loc_get_categories(category_id_t **data, size_t *count)
|
---|
844 | {
|
---|
845 | return loc_get_ids_internal(LOC_GET_CATEGORIES, 0,
|
---|
846 | data, count);
|
---|
847 | }
|
---|
848 |
|
---|
849 | int loc_register_cat_change_cb(loc_cat_change_cb_t cb_fun)
|
---|
850 | {
|
---|
851 | fibril_mutex_lock(&loc_callback_mutex);
|
---|
852 | if (loc_callback_create() != EOK) {
|
---|
853 | fibril_mutex_unlock(&loc_callback_mutex);
|
---|
854 | return EIO;
|
---|
855 | }
|
---|
856 |
|
---|
857 | cat_change_cb = cb_fun;
|
---|
858 | fibril_mutex_unlock(&loc_callback_mutex);
|
---|
859 |
|
---|
860 | return EOK;
|
---|
861 | }
|
---|