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 | /**
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31 | * @addtogroup locsrv
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32 | * @{
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33 | */
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34 |
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35 | /** @file
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36 | */
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37 |
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38 | #include <assert.h>
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39 | #include <async.h>
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40 | #include <errno.h>
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41 | #include <ipc/loc.h>
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42 | #include <ipc/services.h>
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43 | #include <fibril_synch.h>
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44 | #include <macros.h>
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45 | #include <ns.h>
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46 | #include <stdbool.h>
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47 | #include <stdio.h>
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48 | #include <stdlib.h>
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49 | #include <str.h>
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50 | #include <str_error.h>
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51 | #include <sysman/broker.h>
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52 | #include <sysman/ctl.h>
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53 |
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54 | #include "category.h"
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55 | #include "locsrv.h"
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56 |
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57 | #define NAME "loc"
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58 | #define NULL_SERVICES 256
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59 |
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60 | /** Callback session */
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61 | typedef struct {
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62 | link_t cb_sess_list;
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63 | async_sess_t *sess;
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64 | } cb_sess_t;
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65 |
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66 | typedef enum {
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67 | NAME_TO_START,
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68 | NAME_TO_EXPOSE
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69 | } unit_name_t;
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70 |
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71 | LIST_INITIALIZE(services_list);
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72 | LIST_INITIALIZE(namespaces_list);
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73 | LIST_INITIALIZE(servers_list);
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74 |
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75 | /*
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76 | * Locking order:
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77 | * servers_list_mutex
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78 | * services_list_mutex
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79 | * (loc_server_t *)->services_mutex
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80 | * create_id_mutex
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81 | */
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82 |
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83 | FIBRIL_MUTEX_INITIALIZE(services_list_mutex);
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84 | static FIBRIL_CONDVAR_INITIALIZE(services_list_cv);
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85 | static FIBRIL_MUTEX_INITIALIZE(servers_list_mutex);
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86 | static FIBRIL_MUTEX_INITIALIZE(create_id_mutex);
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87 | static FIBRIL_MUTEX_INITIALIZE(null_services_mutex);
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88 |
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89 | static service_id_t last_id = 0;
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90 | static loc_service_t *null_services[NULL_SERVICES];
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91 |
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92 | /*
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93 | * Dummy list for null services. This is necessary so that null services can
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94 | * be used just as any other services, e.g. in loc_service_unregister_core().
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95 | */
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96 | static LIST_INITIALIZE(dummy_null_services);
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97 |
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98 | /** Service directory ogranized by categories (yellow pages) */
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99 | static categ_dir_t cdir;
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100 |
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101 | static FIBRIL_MUTEX_INITIALIZE(callback_sess_mutex);
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102 | static LIST_INITIALIZE(callback_sess_list);
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103 |
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104 | service_id_t loc_create_id(void)
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105 | {
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106 | /*
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107 | * TODO: allow reusing old ids after their unregistration
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108 | * and implement some version of LRU algorithm, avoid overflow
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109 | */
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110 |
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111 | fibril_mutex_lock(&create_id_mutex);
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112 | last_id++;
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113 | fibril_mutex_unlock(&create_id_mutex);
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114 |
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115 | return last_id;
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116 | }
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117 |
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118 | /** Convert fully qualified service name to namespace and service name.
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119 | *
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120 | * A fully qualified service name can be either a plain service name
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121 | * (then the namespace is considered to be an empty string) or consist
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122 | * of two components separated by a slash. No more than one slash
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123 | * is allowed.
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124 | *
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125 | */
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126 | static bool loc_fqsn_split(const char *fqsn, char **ns_name, char **name)
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127 | {
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128 | size_t cnt = 0;
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129 | size_t slash_offset = 0;
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130 | size_t slash_after = 0;
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131 |
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132 | size_t offset = 0;
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133 | size_t offset_prev = 0;
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134 | wchar_t c;
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135 |
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136 | while ((c = str_decode(fqsn, &offset, STR_NO_LIMIT)) != 0) {
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137 | if (c == '/') {
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138 | cnt++;
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139 | slash_offset = offset_prev;
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140 | slash_after = offset;
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141 | }
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142 | offset_prev = offset;
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143 | }
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144 |
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145 | /* More than one slash */
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146 | if (cnt > 1)
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147 | return false;
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148 |
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149 | /* No slash -> namespace is empty */
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150 | if (cnt == 0) {
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151 | *ns_name = str_dup("");
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152 | if (*ns_name == NULL)
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153 | return false;
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154 |
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155 | *name = str_dup(fqsn);
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156 | if (*name == NULL) {
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157 | free(*ns_name);
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158 | return false;
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159 | }
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160 |
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161 | if (str_cmp(*name, "") == 0) {
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162 | free(*name);
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163 | free(*ns_name);
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164 | return false;
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165 | }
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166 |
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167 | return true;
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168 | }
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169 |
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170 | /* Exactly one slash */
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171 | *ns_name = str_ndup(fqsn, slash_offset);
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172 | if (*ns_name == NULL)
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173 | return false;
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174 |
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175 | *name = str_dup(fqsn + slash_after);
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176 | if (*name == NULL) {
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177 | free(*ns_name);
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178 | return false;
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179 | }
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180 |
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181 | if (str_cmp(*name, "") == 0) {
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182 | free(*name);
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183 | free(*ns_name);
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184 | return false;
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185 | }
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186 |
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187 | return true;
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188 | }
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189 |
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190 | /** Find namespace with given name. */
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191 | static loc_namespace_t *loc_namespace_find_name(const char *name)
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192 | {
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193 | assert(fibril_mutex_is_locked(&services_list_mutex));
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194 |
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195 | list_foreach(namespaces_list, namespaces, loc_namespace_t, namespace) {
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196 | if (str_cmp(namespace->name, name) == 0)
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197 | return namespace;
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198 | }
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199 |
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200 | return NULL;
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201 | }
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202 |
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203 | /** Find namespace with given ID.
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204 | *
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205 | * @todo: use hash table
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206 | *
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207 | */
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208 | static loc_namespace_t *loc_namespace_find_id(service_id_t id)
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209 | {
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210 | assert(fibril_mutex_is_locked(&services_list_mutex));
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211 |
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212 | list_foreach(namespaces_list, namespaces, loc_namespace_t, namespace) {
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213 | if (namespace->id == id)
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214 | return namespace;
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215 | }
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216 |
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217 | return NULL;
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218 | }
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219 |
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220 | /** Find service with given name. */
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221 | static loc_service_t *loc_service_find_name(const char *ns_name,
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222 | const char *name)
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223 | {
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224 | assert(fibril_mutex_is_locked(&services_list_mutex));
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225 |
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226 | list_foreach(services_list, services, loc_service_t, service) {
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227 | if ((str_cmp(service->namespace->name, ns_name) == 0) &&
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228 | (str_cmp(service->name, name) == 0))
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229 | return service;
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230 | }
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231 |
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232 | return NULL;
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233 | }
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234 |
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235 | /** Find service with given ID.
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236 | *
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237 | * @todo: use hash table
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238 | *
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239 | */
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240 | static loc_service_t *loc_service_find_id(service_id_t id)
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241 | {
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242 | assert(fibril_mutex_is_locked(&services_list_mutex));
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243 |
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244 | list_foreach(services_list, services, loc_service_t, service) {
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245 | if (service->id == id)
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246 | return service;
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247 | }
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248 |
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249 | return NULL;
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250 | }
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251 |
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252 | /** Create a namespace (if not already present). */
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253 | static loc_namespace_t *loc_namespace_create(const char *ns_name)
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254 | {
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255 | loc_namespace_t *namespace;
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256 |
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257 | assert(fibril_mutex_is_locked(&services_list_mutex));
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258 |
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259 | namespace = loc_namespace_find_name(ns_name);
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260 | if (namespace != NULL)
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261 | return namespace;
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262 |
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263 | namespace = (loc_namespace_t *) malloc(sizeof(loc_namespace_t));
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264 | if (namespace == NULL)
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265 | return NULL;
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266 |
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267 | namespace->name = str_dup(ns_name);
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268 | if (namespace->name == NULL) {
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269 | free(namespace);
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270 | return NULL;
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271 | }
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272 |
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273 | namespace->id = loc_create_id();
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274 | namespace->refcnt = 0;
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275 |
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276 | /*
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277 | * Insert new namespace into list of registered namespaces
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278 | */
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279 | list_append(&(namespace->namespaces), &namespaces_list);
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280 |
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281 | return namespace;
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282 | }
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283 |
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284 | /** Destroy a namespace (if it is no longer needed). */
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285 | static void loc_namespace_destroy(loc_namespace_t *namespace)
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286 | {
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287 | assert(fibril_mutex_is_locked(&services_list_mutex));
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288 |
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289 | if (namespace->refcnt == 0) {
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290 | list_remove(&(namespace->namespaces));
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291 |
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292 | free(namespace->name);
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293 | free(namespace);
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294 | }
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295 | }
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296 |
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297 | /** Increase namespace reference count by including service. */
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298 | static void loc_namespace_addref(loc_namespace_t *namespace,
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299 | loc_service_t *service)
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300 | {
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301 | assert(fibril_mutex_is_locked(&services_list_mutex));
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302 |
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303 | service->namespace = namespace;
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304 | namespace->refcnt++;
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305 | }
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306 |
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307 | /** Decrease namespace reference count. */
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308 | static void loc_namespace_delref(loc_namespace_t *namespace)
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309 | {
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310 | assert(fibril_mutex_is_locked(&services_list_mutex));
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311 |
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312 | namespace->refcnt--;
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313 | loc_namespace_destroy(namespace);
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314 | }
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315 |
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316 | /** Unregister service and free it. */
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317 | static void loc_service_unregister_core(loc_service_t *service)
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318 | {
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319 | assert(fibril_mutex_is_locked(&services_list_mutex));
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320 | assert(fibril_mutex_is_locked(&cdir.mutex));
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321 |
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322 | loc_namespace_delref(service->namespace);
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323 | list_remove(&(service->services));
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324 | list_remove(&(service->server_services));
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325 |
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326 | /* Remove service from all categories. */
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327 | while (!list_empty(&service->cat_memb)) {
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328 | link_t *link = list_first(&service->cat_memb);
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329 | svc_categ_t *memb = list_get_instance(link, svc_categ_t,
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330 | svc_link);
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331 | category_t *cat = memb->cat;
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332 |
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333 | fibril_mutex_lock(&cat->mutex);
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334 | category_remove_service(memb);
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335 | fibril_mutex_unlock(&cat->mutex);
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336 | }
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337 |
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338 | free(service->name);
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339 | free(service);
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340 | }
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341 |
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342 | /** Derive unit name from service name according to purpose
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343 | *
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344 | * All services in 'device' namespace are considered to be drivers and
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345 | * devman is thus requested to start. Otherwise name of unit is made
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346 | * from fully qualified name of service (namespace separator is changed
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347 | * for usage in unit name.
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348 | */
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349 | static int loc_service_unit_name(const char *ns_name, const char *name,
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350 | unit_name_t name_type, char **unit_name_ptr)
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351 | {
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352 | char *service_name = NULL;
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353 | if (name_type == NAME_TO_START &&
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354 | str_cmp(ns_name, LOC_DEVICE_NAMESPACE) == 0) {
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355 | asprintf(&service_name, "%s", SERVICE_NAME_DEVMAN);
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356 | } else if (str_cmp(ns_name, "") == 0) {
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357 | asprintf(&service_name, "%s", name);
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358 | } else {
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359 | asprintf(&service_name, "%s%s%s",
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360 | ns_name, LOC_UNIT_NAMESPACE_SEPARATOR, name);
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361 | }
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362 | if (service_name == NULL) {
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363 | return ENOMEM;
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364 | }
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365 |
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366 | char *unit_name;
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367 | asprintf(&unit_name, "%s%c%s",
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368 | service_name, UNIT_NAME_SEPARATOR, UNIT_SVC_TYPE_NAME);
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369 | if (unit_name == NULL) {
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370 | free(service_name);
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371 | return ENOMEM;
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372 | }
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373 |
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374 | *unit_name_ptr = unit_name;
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375 | return EOK;
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376 | }
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377 |
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378 | static int loc_service_request_start(const char *ns_name, const char *name)
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379 | {
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380 | char *unit_name;
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381 | int rc = loc_service_unit_name(ns_name, name, NAME_TO_START, &unit_name);
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382 | if (rc != EOK) {
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383 | return rc;
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384 | }
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385 |
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386 | rc = sysman_unit_start(unit_name, IPC_FLAG_BLOCKING);
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387 | free(unit_name);
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388 | return rc;
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389 | }
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390 |
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391 | /**
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392 | * Read info about new server and add it into linked list of registered
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393 | * servers.
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394 | */
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395 | static loc_server_t *loc_server_register(void)
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396 | {
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397 | ipc_call_t icall;
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398 | async_get_call(&icall);
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399 |
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400 | if (ipc_get_imethod(&icall) != LOC_SERVER_REGISTER) {
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401 | async_answer_0(&icall, EREFUSED);
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402 | return NULL;
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403 | }
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404 |
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405 | loc_server_t *server =
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406 | (loc_server_t *) malloc(sizeof(loc_server_t));
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407 | if (server == NULL) {
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408 | async_answer_0(&icall, ENOMEM);
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409 | return NULL;
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410 | }
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411 |
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412 | /*
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413 | * Get server name
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414 | */
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415 | errno_t rc = async_data_write_accept((void **) &server->name, true, 0,
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416 | LOC_NAME_MAXLEN, 0, NULL);
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417 | if (rc != EOK) {
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418 | free(server);
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419 | async_answer_0(&icall, rc);
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420 | return NULL;
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421 | }
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422 |
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423 | /*
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424 | * Create connection to the server
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425 | */
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426 | server->sess = async_callback_receive(EXCHANGE_SERIALIZE);
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427 | if (!server->sess) {
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428 | free(server->name);
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429 | free(server);
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430 | async_answer_0(&icall, ENOTSUP);
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431 | return NULL;
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432 | }
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433 |
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434 | /*
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435 | * Initialize mutex for list of services
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436 | * supplied by this server
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437 | */
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438 | fibril_mutex_initialize(&server->services_mutex);
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439 |
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440 | /*
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441 | * Initialize list of supplied services
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442 | */
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443 | list_initialize(&server->services);
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444 | link_initialize(&server->servers);
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445 |
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446 | fibril_mutex_lock(&servers_list_mutex);
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447 |
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448 | /*
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449 | * TODO:
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450 | * Check that no server with name equal to
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451 | * server->name is registered
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452 | */
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453 |
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454 | /*
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455 | * Insert new server into list of registered servers
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456 | */
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457 | list_append(&(server->servers), &servers_list);
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458 | fibril_mutex_unlock(&servers_list_mutex);
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459 |
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460 | async_answer_0(&icall, EOK);
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461 |
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462 | return server;
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463 | }
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464 |
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465 | /**
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466 | * Unregister server, unregister all its services and free server
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467 | * structure.
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468 | *
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469 | */
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470 | static errno_t loc_server_unregister(loc_server_t *server)
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471 | {
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472 | if (server == NULL)
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473 | return EEXIST;
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474 |
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475 | fibril_mutex_lock(&servers_list_mutex);
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476 |
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477 | if (server->sess)
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478 | async_hangup(server->sess);
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479 |
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480 | /* Remove it from list of servers */
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481 | list_remove(&(server->servers));
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482 |
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483 | /* Unregister all its services */
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484 | fibril_mutex_lock(&services_list_mutex);
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485 | fibril_mutex_lock(&server->services_mutex);
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486 | fibril_mutex_lock(&cdir.mutex);
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487 |
|
---|
488 | while (!list_empty(&server->services)) {
|
---|
489 | loc_service_t *service = list_get_instance(
|
---|
490 | list_first(&server->services), loc_service_t,
|
---|
491 | server_services);
|
---|
492 | loc_service_unregister_core(service);
|
---|
493 | }
|
---|
494 |
|
---|
495 | fibril_mutex_unlock(&cdir.mutex);
|
---|
496 | fibril_mutex_unlock(&server->services_mutex);
|
---|
497 | fibril_mutex_unlock(&services_list_mutex);
|
---|
498 | fibril_mutex_unlock(&servers_list_mutex);
|
---|
499 |
|
---|
500 | /* Free name and server */
|
---|
501 | if (server->name != NULL)
|
---|
502 | free(server->name);
|
---|
503 |
|
---|
504 | free(server);
|
---|
505 |
|
---|
506 | loc_category_change_event();
|
---|
507 | return EOK;
|
---|
508 | }
|
---|
509 |
|
---|
510 | /** Register service
|
---|
511 | *
|
---|
512 | */
|
---|
513 | static void loc_service_register(ipc_call_t *icall, loc_server_t *server)
|
---|
514 | {
|
---|
515 | if (server == NULL) {
|
---|
516 | async_answer_0(icall, EREFUSED);
|
---|
517 | return;
|
---|
518 | }
|
---|
519 |
|
---|
520 | /* Create new service entry */
|
---|
521 | loc_service_t *service =
|
---|
522 | (loc_service_t *) malloc(sizeof(loc_service_t));
|
---|
523 | if (service == NULL) {
|
---|
524 | async_answer_0(icall, ENOMEM);
|
---|
525 | return;
|
---|
526 | }
|
---|
527 |
|
---|
528 | /* Get fqsn */
|
---|
529 | char *fqsn;
|
---|
530 | errno_t rc = async_data_write_accept((void **) &fqsn, true, 0,
|
---|
531 | LOC_NAME_MAXLEN, 0, NULL);
|
---|
532 | if (rc != EOK) {
|
---|
533 | free(service);
|
---|
534 | async_answer_0(icall, rc);
|
---|
535 | return;
|
---|
536 | }
|
---|
537 |
|
---|
538 | char *ns_name;
|
---|
539 | if (!loc_fqsn_split(fqsn, &ns_name, &service->name)) {
|
---|
540 | free(fqsn);
|
---|
541 | free(service);
|
---|
542 | async_answer_0(icall, EINVAL);
|
---|
543 | return;
|
---|
544 | }
|
---|
545 |
|
---|
546 | free(fqsn);
|
---|
547 |
|
---|
548 | fibril_mutex_lock(&services_list_mutex);
|
---|
549 |
|
---|
550 | loc_namespace_t *namespace = loc_namespace_create(ns_name);
|
---|
551 | free(ns_name);
|
---|
552 | if (namespace == NULL) {
|
---|
553 | fibril_mutex_unlock(&services_list_mutex);
|
---|
554 | free(service->name);
|
---|
555 | free(service);
|
---|
556 | async_answer_0(icall, ENOMEM);
|
---|
557 | return;
|
---|
558 | }
|
---|
559 |
|
---|
560 | link_initialize(&service->services);
|
---|
561 | link_initialize(&service->server_services);
|
---|
562 | list_initialize(&service->cat_memb);
|
---|
563 |
|
---|
564 | /* Check that service is not already registered */
|
---|
565 | if (loc_service_find_name(namespace->name, service->name) != NULL) {
|
---|
566 | printf("%s: Service '%s/%s' already registered\n", NAME,
|
---|
567 | namespace->name, service->name);
|
---|
568 | loc_namespace_destroy(namespace);
|
---|
569 | fibril_mutex_unlock(&services_list_mutex);
|
---|
570 | free(service->name);
|
---|
571 | free(service);
|
---|
572 | async_answer_0(icall, EEXIST);
|
---|
573 | return;
|
---|
574 | }
|
---|
575 |
|
---|
576 | /* Notify sysman about new exposee */
|
---|
577 | char *unit_name = NULL;
|
---|
578 | rc = loc_service_unit_name(namespace->name, service->name,
|
---|
579 | NAME_TO_EXPOSE, &unit_name);
|
---|
580 | if (rc != EOK) {
|
---|
581 | loc_namespace_destroy(namespace);
|
---|
582 | fibril_mutex_unlock(&services_list_mutex);
|
---|
583 | free(service->name);
|
---|
584 | free(service);
|
---|
585 | free(unit_name);
|
---|
586 | async_answer_0(iid, rc);
|
---|
587 | return;
|
---|
588 | }
|
---|
589 |
|
---|
590 | if (str_cmp(namespace->name, LOC_DEVICE_NAMESPACE) == 0) {
|
---|
591 | sysman_exposee_added(unit_name);
|
---|
592 | } else {
|
---|
593 | sysman_main_exposee_added(unit_name, icall->in_task_id);
|
---|
594 | }
|
---|
595 | free(unit_name);
|
---|
596 |
|
---|
597 | /* Get unique service ID */
|
---|
598 | service->id = loc_create_id();
|
---|
599 |
|
---|
600 | loc_namespace_addref(namespace, service);
|
---|
601 | service->server = server;
|
---|
602 |
|
---|
603 | /* Insert service into list of all services */
|
---|
604 | list_append(&service->services, &services_list);
|
---|
605 |
|
---|
606 | /* Insert service into list of services supplied by one server */
|
---|
607 | fibril_mutex_lock(&service->server->services_mutex);
|
---|
608 |
|
---|
609 | list_append(&service->server_services, &service->server->services);
|
---|
610 |
|
---|
611 | fibril_mutex_unlock(&service->server->services_mutex);
|
---|
612 | fibril_condvar_broadcast(&services_list_cv);
|
---|
613 | fibril_mutex_unlock(&services_list_mutex);
|
---|
614 |
|
---|
615 | async_answer_1(icall, EOK, service->id);
|
---|
616 | }
|
---|
617 |
|
---|
618 | /**
|
---|
619 | *
|
---|
620 | */
|
---|
621 | static void loc_service_unregister(ipc_callid_t iid, ipc_call_t *icall,
|
---|
622 | loc_server_t *server)
|
---|
623 | {
|
---|
624 | loc_service_t *svc;
|
---|
625 |
|
---|
626 | fibril_mutex_lock(&services_list_mutex);
|
---|
627 | svc = loc_service_find_id(ipc_get_arg1(icall));
|
---|
628 | if (svc == NULL) {
|
---|
629 | fibril_mutex_unlock(&services_list_mutex);
|
---|
630 | async_answer_0(icall, ENOENT);
|
---|
631 | return;
|
---|
632 | }
|
---|
633 |
|
---|
634 | fibril_mutex_lock(&cdir.mutex);
|
---|
635 | loc_service_unregister_core(svc);
|
---|
636 | fibril_mutex_unlock(&cdir.mutex);
|
---|
637 | fibril_mutex_unlock(&services_list_mutex);
|
---|
638 |
|
---|
639 | /*
|
---|
640 | * First send out all notifications and only then answer the request.
|
---|
641 | * Otherwise the current fibril might block and transitively wait for
|
---|
642 | * the completion of requests that are routed to it via an IPC loop.
|
---|
643 | */
|
---|
644 | loc_category_change_event();
|
---|
645 | async_answer_0(icall, EOK);
|
---|
646 | }
|
---|
647 |
|
---|
648 | static void loc_category_get_name(ipc_call_t *icall)
|
---|
649 | {
|
---|
650 | ipc_call_t call;
|
---|
651 | size_t size;
|
---|
652 | size_t act_size;
|
---|
653 | category_t *cat;
|
---|
654 |
|
---|
655 | if (!async_data_read_receive(&call, &size)) {
|
---|
656 | async_answer_0(&call, EREFUSED);
|
---|
657 | async_answer_0(icall, EREFUSED);
|
---|
658 | return;
|
---|
659 | }
|
---|
660 |
|
---|
661 | fibril_mutex_lock(&cdir.mutex);
|
---|
662 |
|
---|
663 | cat = category_get(&cdir, ipc_get_arg1(icall));
|
---|
664 | if (cat == NULL) {
|
---|
665 | fibril_mutex_unlock(&cdir.mutex);
|
---|
666 | async_answer_0(&call, ENOENT);
|
---|
667 | async_answer_0(icall, ENOENT);
|
---|
668 | return;
|
---|
669 | }
|
---|
670 |
|
---|
671 | act_size = str_size(cat->name);
|
---|
672 | if (act_size > size) {
|
---|
673 | fibril_mutex_unlock(&cdir.mutex);
|
---|
674 | async_answer_0(&call, EOVERFLOW);
|
---|
675 | async_answer_0(icall, EOVERFLOW);
|
---|
676 | return;
|
---|
677 | }
|
---|
678 |
|
---|
679 | errno_t retval = async_data_read_finalize(&call, cat->name,
|
---|
680 | min(size, act_size));
|
---|
681 |
|
---|
682 | fibril_mutex_unlock(&cdir.mutex);
|
---|
683 |
|
---|
684 | async_answer_0(icall, retval);
|
---|
685 | }
|
---|
686 |
|
---|
687 | static void loc_service_get_name(ipc_call_t *icall)
|
---|
688 | {
|
---|
689 | ipc_call_t call;
|
---|
690 | size_t size;
|
---|
691 | size_t act_size;
|
---|
692 | loc_service_t *svc;
|
---|
693 | char *fqn;
|
---|
694 |
|
---|
695 | if (!async_data_read_receive(&call, &size)) {
|
---|
696 | async_answer_0(&call, EREFUSED);
|
---|
697 | async_answer_0(icall, EREFUSED);
|
---|
698 | return;
|
---|
699 | }
|
---|
700 |
|
---|
701 | fibril_mutex_lock(&services_list_mutex);
|
---|
702 |
|
---|
703 | svc = loc_service_find_id(ipc_get_arg1(icall));
|
---|
704 | if (svc == NULL) {
|
---|
705 | fibril_mutex_unlock(&services_list_mutex);
|
---|
706 | async_answer_0(&call, ENOENT);
|
---|
707 | async_answer_0(icall, ENOENT);
|
---|
708 | return;
|
---|
709 | }
|
---|
710 |
|
---|
711 | if (asprintf(&fqn, "%s/%s", svc->namespace->name, svc->name) < 0) {
|
---|
712 | fibril_mutex_unlock(&services_list_mutex);
|
---|
713 | async_answer_0(&call, ENOMEM);
|
---|
714 | async_answer_0(icall, ENOMEM);
|
---|
715 | return;
|
---|
716 | }
|
---|
717 |
|
---|
718 | act_size = str_size(fqn);
|
---|
719 | if (act_size > size) {
|
---|
720 | free(fqn);
|
---|
721 | fibril_mutex_unlock(&services_list_mutex);
|
---|
722 | async_answer_0(&call, EOVERFLOW);
|
---|
723 | async_answer_0(icall, EOVERFLOW);
|
---|
724 | return;
|
---|
725 | }
|
---|
726 |
|
---|
727 | errno_t retval = async_data_read_finalize(&call, fqn,
|
---|
728 | min(size, act_size));
|
---|
729 | free(fqn);
|
---|
730 |
|
---|
731 | fibril_mutex_unlock(&services_list_mutex);
|
---|
732 |
|
---|
733 | async_answer_0(icall, retval);
|
---|
734 | }
|
---|
735 |
|
---|
736 | static void loc_service_get_server_name(ipc_call_t *icall)
|
---|
737 | {
|
---|
738 | ipc_call_t call;
|
---|
739 | size_t size;
|
---|
740 | size_t act_size;
|
---|
741 | loc_service_t *svc;
|
---|
742 |
|
---|
743 | if (!async_data_read_receive(&call, &size)) {
|
---|
744 | async_answer_0(&call, EREFUSED);
|
---|
745 | async_answer_0(icall, EREFUSED);
|
---|
746 | return;
|
---|
747 | }
|
---|
748 |
|
---|
749 | fibril_mutex_lock(&services_list_mutex);
|
---|
750 |
|
---|
751 | svc = loc_service_find_id(ipc_get_arg1(icall));
|
---|
752 | if (svc == NULL) {
|
---|
753 | fibril_mutex_unlock(&services_list_mutex);
|
---|
754 | async_answer_0(&call, ENOENT);
|
---|
755 | async_answer_0(icall, ENOENT);
|
---|
756 | return;
|
---|
757 | }
|
---|
758 |
|
---|
759 | if (svc->server == NULL) {
|
---|
760 | fibril_mutex_unlock(&services_list_mutex);
|
---|
761 | async_answer_0(&call, EINVAL);
|
---|
762 | async_answer_0(icall, EINVAL);
|
---|
763 | return;
|
---|
764 | }
|
---|
765 |
|
---|
766 | act_size = str_size(svc->server->name);
|
---|
767 | if (act_size > size) {
|
---|
768 | fibril_mutex_unlock(&services_list_mutex);
|
---|
769 | async_answer_0(&call, EOVERFLOW);
|
---|
770 | async_answer_0(icall, EOVERFLOW);
|
---|
771 | return;
|
---|
772 | }
|
---|
773 |
|
---|
774 | errno_t retval = async_data_read_finalize(&call, svc->server->name,
|
---|
775 | min(size, act_size));
|
---|
776 |
|
---|
777 | fibril_mutex_unlock(&services_list_mutex);
|
---|
778 |
|
---|
779 | async_answer_0(icall, retval);
|
---|
780 | }
|
---|
781 |
|
---|
782 | /** Connect client to the service.
|
---|
783 | *
|
---|
784 | * Find server supplying requested service and forward
|
---|
785 | * the message to it.
|
---|
786 | *
|
---|
787 | */
|
---|
788 | static void loc_forward(ipc_call_t *call, void *arg)
|
---|
789 | {
|
---|
790 | fibril_mutex_lock(&services_list_mutex);
|
---|
791 |
|
---|
792 | /*
|
---|
793 | * Get ID from request
|
---|
794 | */
|
---|
795 | iface_t iface = ipc_get_arg1(call);
|
---|
796 | service_id_t id = ipc_get_arg2(call);
|
---|
797 | loc_service_t *svc = loc_service_find_id(id);
|
---|
798 |
|
---|
799 | if ((svc == NULL) || (svc->server == NULL) || (!svc->server->sess)) {
|
---|
800 | fibril_mutex_unlock(&services_list_mutex);
|
---|
801 | async_answer_0(call, ENOENT);
|
---|
802 | return;
|
---|
803 | }
|
---|
804 |
|
---|
805 | async_exch_t *exch = async_exchange_begin(svc->server->sess);
|
---|
806 | async_forward_1(call, exch, iface, svc->id, IPC_FF_NONE);
|
---|
807 | async_exchange_end(exch);
|
---|
808 |
|
---|
809 | fibril_mutex_unlock(&services_list_mutex);
|
---|
810 | }
|
---|
811 |
|
---|
812 | /** Find ID for service identified by name.
|
---|
813 | *
|
---|
814 | * In answer will be send EOK and service ID in arg1 or a error
|
---|
815 | * code from errno.h.
|
---|
816 | *
|
---|
817 | */
|
---|
818 | static void loc_service_get_id(ipc_call_t *icall)
|
---|
819 | {
|
---|
820 | char *fqsn;
|
---|
821 |
|
---|
822 | /* Get fqsn */
|
---|
823 | errno_t rc = async_data_write_accept((void **) &fqsn, true, 0,
|
---|
824 | LOC_NAME_MAXLEN, 0, NULL);
|
---|
825 | if (rc != EOK) {
|
---|
826 | async_answer_0(icall, rc);
|
---|
827 | return;
|
---|
828 | }
|
---|
829 |
|
---|
830 | char *ns_name;
|
---|
831 | char *name;
|
---|
832 | if (!loc_fqsn_split(fqsn, &ns_name, &name)) {
|
---|
833 | free(fqsn);
|
---|
834 | async_answer_0(icall, EINVAL);
|
---|
835 | return;
|
---|
836 | }
|
---|
837 |
|
---|
838 | free(fqsn);
|
---|
839 |
|
---|
840 | fibril_mutex_lock(&services_list_mutex);
|
---|
841 | const loc_service_t *svc;
|
---|
842 | int flags = ipc_get_arg1(*icall);
|
---|
843 | bool start_requested = false;
|
---|
844 |
|
---|
845 | recheck:
|
---|
846 |
|
---|
847 | /*
|
---|
848 | * Find service name in the list of known services.
|
---|
849 | */
|
---|
850 | svc = loc_service_find_name(ns_name, name);
|
---|
851 |
|
---|
852 | /*
|
---|
853 | * Service was not found.
|
---|
854 | */
|
---|
855 | if (svc == NULL) {
|
---|
856 | /* TODO:
|
---|
857 | * consider non-blocking service start, return
|
---|
858 | * some dummy id and block only after connection
|
---|
859 | * request (actually makes more sense as those who asks
|
---|
860 | * for ID might be someone else than those connecting)
|
---|
861 | * Note:
|
---|
862 | * service_list_mutex is released as we don't need to keep it
|
---|
863 | * while waiting for start request to finish.
|
---|
864 | */
|
---|
865 | if ((flags & IPC_FLAG_AUTOSTART) && !start_requested) {
|
---|
866 | fibril_mutex_unlock(&services_list_mutex);
|
---|
867 | rc = loc_service_request_start(ns_name, name);
|
---|
868 | fibril_mutex_lock(&services_list_mutex);
|
---|
869 | start_requested = true;
|
---|
870 |
|
---|
871 | if (rc != EOK) {
|
---|
872 | goto finish;
|
---|
873 | } else {
|
---|
874 | goto recheck;
|
---|
875 | }
|
---|
876 | }
|
---|
877 |
|
---|
878 | if ((flags & IPC_FLAG_BLOCKING) || flags & IPC_FLAG_AUTOSTART) {
|
---|
879 | fibril_condvar_wait(&services_list_cv,
|
---|
880 | &services_list_mutex);
|
---|
881 | goto recheck;
|
---|
882 | }
|
---|
883 | rc = ENOENT;
|
---|
884 | } else {
|
---|
885 | rc = EOK;
|
---|
886 | }
|
---|
887 |
|
---|
888 | finish:
|
---|
889 | if (rc == EOK) {
|
---|
890 | async_answer_1(iid, EOK, svc->id);
|
---|
891 | } else {
|
---|
892 | async_answer_0(iid, rc);
|
---|
893 | }
|
---|
894 |
|
---|
895 | fibril_mutex_unlock(&services_list_mutex);
|
---|
896 | free(ns_name);
|
---|
897 | free(name);
|
---|
898 | }
|
---|
899 |
|
---|
900 | /** Find ID for namespace identified by name.
|
---|
901 | *
|
---|
902 | * In answer will be send EOK and service ID in arg1 or a error
|
---|
903 | * code from errno.h.
|
---|
904 | *
|
---|
905 | */
|
---|
906 | static void loc_namespace_get_id(ipc_call_t *icall)
|
---|
907 | {
|
---|
908 | char *name;
|
---|
909 |
|
---|
910 | /* Get service name */
|
---|
911 | errno_t rc = async_data_write_accept((void **) &name, true, 0,
|
---|
912 | LOC_NAME_MAXLEN, 0, NULL);
|
---|
913 | if (rc != EOK) {
|
---|
914 | async_answer_0(icall, rc);
|
---|
915 | return;
|
---|
916 | }
|
---|
917 |
|
---|
918 | fibril_mutex_lock(&services_list_mutex);
|
---|
919 | const loc_namespace_t *namespace;
|
---|
920 |
|
---|
921 | recheck:
|
---|
922 |
|
---|
923 | /*
|
---|
924 | * Find namespace name in the list of known namespaces.
|
---|
925 | */
|
---|
926 | namespace = loc_namespace_find_name(name);
|
---|
927 |
|
---|
928 | /*
|
---|
929 | * Namespace was not found.
|
---|
930 | */
|
---|
931 | if (namespace == NULL) {
|
---|
932 | if (ipc_get_arg1(icall) & IPC_FLAG_BLOCKING) {
|
---|
933 | /* Blocking lookup */
|
---|
934 | fibril_condvar_wait(&services_list_cv,
|
---|
935 | &services_list_mutex);
|
---|
936 | goto recheck;
|
---|
937 | }
|
---|
938 |
|
---|
939 | async_answer_0(icall, ENOENT);
|
---|
940 | free(name);
|
---|
941 | fibril_mutex_unlock(&services_list_mutex);
|
---|
942 | return;
|
---|
943 | }
|
---|
944 |
|
---|
945 | async_answer_1(icall, EOK, namespace->id);
|
---|
946 |
|
---|
947 | fibril_mutex_unlock(&services_list_mutex);
|
---|
948 | free(name);
|
---|
949 | }
|
---|
950 |
|
---|
951 | /** Create callback connection.
|
---|
952 | *
|
---|
953 | * Create callback connection which will be used to send category change
|
---|
954 | * events.
|
---|
955 | *
|
---|
956 | * On success, answer will contain EOK errno_t retval.
|
---|
957 | * On failure, error code will be sent in retval.
|
---|
958 | *
|
---|
959 | */
|
---|
960 | static void loc_callback_create(ipc_call_t *icall)
|
---|
961 | {
|
---|
962 | cb_sess_t *cb_sess = calloc(1, sizeof(cb_sess_t));
|
---|
963 | if (cb_sess == NULL) {
|
---|
964 | async_answer_0(icall, ENOMEM);
|
---|
965 | return;
|
---|
966 | }
|
---|
967 |
|
---|
968 | async_sess_t *sess = async_callback_receive(EXCHANGE_SERIALIZE);
|
---|
969 | if (sess == NULL) {
|
---|
970 | free(cb_sess);
|
---|
971 | async_answer_0(icall, ENOMEM);
|
---|
972 | return;
|
---|
973 | }
|
---|
974 |
|
---|
975 | cb_sess->sess = sess;
|
---|
976 | link_initialize(&cb_sess->cb_sess_list);
|
---|
977 |
|
---|
978 | fibril_mutex_lock(&callback_sess_mutex);
|
---|
979 | list_append(&cb_sess->cb_sess_list, &callback_sess_list);
|
---|
980 | fibril_mutex_unlock(&callback_sess_mutex);
|
---|
981 |
|
---|
982 | async_answer_0(icall, EOK);
|
---|
983 | }
|
---|
984 |
|
---|
985 | void loc_category_change_event(void)
|
---|
986 | {
|
---|
987 | fibril_mutex_lock(&callback_sess_mutex);
|
---|
988 |
|
---|
989 | list_foreach(callback_sess_list, cb_sess_list, cb_sess_t, cb_sess) {
|
---|
990 | async_exch_t *exch = async_exchange_begin(cb_sess->sess);
|
---|
991 | async_msg_0(exch, LOC_EVENT_CAT_CHANGE);
|
---|
992 | async_exchange_end(exch);
|
---|
993 | }
|
---|
994 |
|
---|
995 | fibril_mutex_unlock(&callback_sess_mutex);
|
---|
996 | }
|
---|
997 |
|
---|
998 | /** Find ID for category specified by name.
|
---|
999 | *
|
---|
1000 | * On success, answer will contain EOK errno_t retval and service ID in arg1.
|
---|
1001 | * On failure, error code will be sent in retval.
|
---|
1002 | *
|
---|
1003 | */
|
---|
1004 | static void loc_category_get_id(ipc_call_t *icall)
|
---|
1005 | {
|
---|
1006 | char *name;
|
---|
1007 | category_t *cat;
|
---|
1008 |
|
---|
1009 | /* Get service name */
|
---|
1010 | errno_t rc = async_data_write_accept((void **) &name, true, 0,
|
---|
1011 | LOC_NAME_MAXLEN, 0, NULL);
|
---|
1012 | if (rc != EOK) {
|
---|
1013 | async_answer_0(icall, rc);
|
---|
1014 | return;
|
---|
1015 | }
|
---|
1016 |
|
---|
1017 | fibril_mutex_lock(&cdir.mutex);
|
---|
1018 |
|
---|
1019 | cat = category_find_by_name(&cdir, name);
|
---|
1020 | if (cat == NULL) {
|
---|
1021 | /* Category not found */
|
---|
1022 | async_answer_0(icall, ENOENT);
|
---|
1023 | goto cleanup;
|
---|
1024 | }
|
---|
1025 |
|
---|
1026 | async_answer_1(icall, EOK, cat->id);
|
---|
1027 | cleanup:
|
---|
1028 | fibril_mutex_unlock(&cdir.mutex);
|
---|
1029 | free(name);
|
---|
1030 | }
|
---|
1031 |
|
---|
1032 | static void loc_id_probe(ipc_call_t *icall)
|
---|
1033 | {
|
---|
1034 | fibril_mutex_lock(&services_list_mutex);
|
---|
1035 |
|
---|
1036 | loc_namespace_t *namespace =
|
---|
1037 | loc_namespace_find_id(ipc_get_arg1(icall));
|
---|
1038 | if (namespace == NULL) {
|
---|
1039 | loc_service_t *svc =
|
---|
1040 | loc_service_find_id(ipc_get_arg1(icall));
|
---|
1041 | if (svc == NULL)
|
---|
1042 | async_answer_1(icall, EOK, LOC_OBJECT_NONE);
|
---|
1043 | else
|
---|
1044 | async_answer_1(icall, EOK, LOC_OBJECT_SERVICE);
|
---|
1045 | } else
|
---|
1046 | async_answer_1(icall, EOK, LOC_OBJECT_NAMESPACE);
|
---|
1047 |
|
---|
1048 | fibril_mutex_unlock(&services_list_mutex);
|
---|
1049 | }
|
---|
1050 |
|
---|
1051 | static void loc_get_namespace_count(ipc_call_t *icall)
|
---|
1052 | {
|
---|
1053 | fibril_mutex_lock(&services_list_mutex);
|
---|
1054 | async_answer_1(icall, EOK, list_count(&namespaces_list));
|
---|
1055 | fibril_mutex_unlock(&services_list_mutex);
|
---|
1056 | }
|
---|
1057 |
|
---|
1058 | static void loc_get_service_count(ipc_call_t *icall)
|
---|
1059 | {
|
---|
1060 | fibril_mutex_lock(&services_list_mutex);
|
---|
1061 |
|
---|
1062 | loc_namespace_t *namespace =
|
---|
1063 | loc_namespace_find_id(ipc_get_arg1(icall));
|
---|
1064 | if (namespace == NULL)
|
---|
1065 | async_answer_0(icall, EEXIST);
|
---|
1066 | else
|
---|
1067 | async_answer_1(icall, EOK, namespace->refcnt);
|
---|
1068 |
|
---|
1069 | fibril_mutex_unlock(&services_list_mutex);
|
---|
1070 | }
|
---|
1071 |
|
---|
1072 | static void loc_get_categories(ipc_call_t *icall)
|
---|
1073 | {
|
---|
1074 | ipc_call_t call;
|
---|
1075 | size_t size;
|
---|
1076 | size_t act_size;
|
---|
1077 | errno_t rc;
|
---|
1078 |
|
---|
1079 | if (!async_data_read_receive(&call, &size)) {
|
---|
1080 | async_answer_0(&call, EREFUSED);
|
---|
1081 | async_answer_0(icall, EREFUSED);
|
---|
1082 | return;
|
---|
1083 | }
|
---|
1084 |
|
---|
1085 | category_id_t *id_buf = (category_id_t *) malloc(size);
|
---|
1086 | if (id_buf == NULL) {
|
---|
1087 | fibril_mutex_unlock(&cdir.mutex);
|
---|
1088 | async_answer_0(&call, ENOMEM);
|
---|
1089 | async_answer_0(icall, ENOMEM);
|
---|
1090 | return;
|
---|
1091 | }
|
---|
1092 |
|
---|
1093 | fibril_mutex_lock(&cdir.mutex);
|
---|
1094 |
|
---|
1095 | rc = categ_dir_get_categories(&cdir, id_buf, size, &act_size);
|
---|
1096 | if (rc != EOK) {
|
---|
1097 | fibril_mutex_unlock(&cdir.mutex);
|
---|
1098 | async_answer_0(&call, rc);
|
---|
1099 | async_answer_0(icall, rc);
|
---|
1100 | return;
|
---|
1101 | }
|
---|
1102 |
|
---|
1103 | fibril_mutex_unlock(&cdir.mutex);
|
---|
1104 |
|
---|
1105 | errno_t retval = async_data_read_finalize(&call, id_buf, size);
|
---|
1106 | free(id_buf);
|
---|
1107 |
|
---|
1108 | async_answer_1(icall, retval, act_size);
|
---|
1109 | }
|
---|
1110 |
|
---|
1111 | static void loc_get_namespaces(ipc_call_t *icall)
|
---|
1112 | {
|
---|
1113 | ipc_call_t call;
|
---|
1114 | size_t size;
|
---|
1115 | if (!async_data_read_receive(&call, &size)) {
|
---|
1116 | async_answer_0(&call, EREFUSED);
|
---|
1117 | async_answer_0(icall, EREFUSED);
|
---|
1118 | return;
|
---|
1119 | }
|
---|
1120 |
|
---|
1121 | if ((size % sizeof(loc_sdesc_t)) != 0) {
|
---|
1122 | async_answer_0(&call, EINVAL);
|
---|
1123 | async_answer_0(icall, EINVAL);
|
---|
1124 | return;
|
---|
1125 | }
|
---|
1126 |
|
---|
1127 | fibril_mutex_lock(&services_list_mutex);
|
---|
1128 |
|
---|
1129 | size_t count = size / sizeof(loc_sdesc_t);
|
---|
1130 | if (count != list_count(&namespaces_list)) {
|
---|
1131 | fibril_mutex_unlock(&services_list_mutex);
|
---|
1132 | async_answer_0(&call, EOVERFLOW);
|
---|
1133 | async_answer_0(icall, EOVERFLOW);
|
---|
1134 | return;
|
---|
1135 | }
|
---|
1136 |
|
---|
1137 | loc_sdesc_t *desc = (loc_sdesc_t *) malloc(size);
|
---|
1138 | if (desc == NULL) {
|
---|
1139 | fibril_mutex_unlock(&services_list_mutex);
|
---|
1140 | async_answer_0(&call, ENOMEM);
|
---|
1141 | async_answer_0(icall, ENOMEM);
|
---|
1142 | return;
|
---|
1143 | }
|
---|
1144 |
|
---|
1145 | size_t pos = 0;
|
---|
1146 | list_foreach(namespaces_list, namespaces, loc_namespace_t, namespace) {
|
---|
1147 | desc[pos].id = namespace->id;
|
---|
1148 | str_cpy(desc[pos].name, LOC_NAME_MAXLEN, namespace->name);
|
---|
1149 | pos++;
|
---|
1150 | }
|
---|
1151 |
|
---|
1152 | errno_t retval = async_data_read_finalize(&call, desc, size);
|
---|
1153 |
|
---|
1154 | free(desc);
|
---|
1155 | fibril_mutex_unlock(&services_list_mutex);
|
---|
1156 |
|
---|
1157 | async_answer_0(icall, retval);
|
---|
1158 | }
|
---|
1159 |
|
---|
1160 | static void loc_get_services(ipc_call_t *icall)
|
---|
1161 | {
|
---|
1162 | /*
|
---|
1163 | * FIXME: Use faster algorithm which can make better use
|
---|
1164 | * of namespaces
|
---|
1165 | */
|
---|
1166 |
|
---|
1167 | ipc_call_t call;
|
---|
1168 | size_t size;
|
---|
1169 | if (!async_data_read_receive(&call, &size)) {
|
---|
1170 | async_answer_0(&call, EREFUSED);
|
---|
1171 | async_answer_0(icall, EREFUSED);
|
---|
1172 | return;
|
---|
1173 | }
|
---|
1174 |
|
---|
1175 | if ((size % sizeof(loc_sdesc_t)) != 0) {
|
---|
1176 | async_answer_0(&call, EINVAL);
|
---|
1177 | async_answer_0(icall, EINVAL);
|
---|
1178 | return;
|
---|
1179 | }
|
---|
1180 |
|
---|
1181 | fibril_mutex_lock(&services_list_mutex);
|
---|
1182 |
|
---|
1183 | loc_namespace_t *namespace =
|
---|
1184 | loc_namespace_find_id(ipc_get_arg1(icall));
|
---|
1185 | if (namespace == NULL) {
|
---|
1186 | fibril_mutex_unlock(&services_list_mutex);
|
---|
1187 | async_answer_0(&call, ENOENT);
|
---|
1188 | async_answer_0(icall, ENOENT);
|
---|
1189 | return;
|
---|
1190 | }
|
---|
1191 |
|
---|
1192 | size_t count = size / sizeof(loc_sdesc_t);
|
---|
1193 | if (count != namespace->refcnt) {
|
---|
1194 | fibril_mutex_unlock(&services_list_mutex);
|
---|
1195 | async_answer_0(&call, EOVERFLOW);
|
---|
1196 | async_answer_0(icall, EOVERFLOW);
|
---|
1197 | return;
|
---|
1198 | }
|
---|
1199 |
|
---|
1200 | loc_sdesc_t *desc = (loc_sdesc_t *) malloc(size);
|
---|
1201 | if (desc == NULL) {
|
---|
1202 | fibril_mutex_unlock(&services_list_mutex);
|
---|
1203 | async_answer_0(&call, ENOMEM);
|
---|
1204 | async_answer_0(icall, EREFUSED);
|
---|
1205 | return;
|
---|
1206 | }
|
---|
1207 |
|
---|
1208 | size_t pos = 0;
|
---|
1209 | list_foreach(services_list, services, loc_service_t, service) {
|
---|
1210 | if (service->namespace == namespace) {
|
---|
1211 | desc[pos].id = service->id;
|
---|
1212 | str_cpy(desc[pos].name, LOC_NAME_MAXLEN, service->name);
|
---|
1213 | pos++;
|
---|
1214 | }
|
---|
1215 | }
|
---|
1216 |
|
---|
1217 | errno_t retval = async_data_read_finalize(&call, desc, size);
|
---|
1218 |
|
---|
1219 | free(desc);
|
---|
1220 | fibril_mutex_unlock(&services_list_mutex);
|
---|
1221 |
|
---|
1222 | async_answer_0(icall, retval);
|
---|
1223 | }
|
---|
1224 |
|
---|
1225 | static void loc_category_get_svcs(ipc_call_t *icall)
|
---|
1226 | {
|
---|
1227 | ipc_call_t call;
|
---|
1228 | size_t size;
|
---|
1229 | size_t act_size;
|
---|
1230 | errno_t rc;
|
---|
1231 |
|
---|
1232 | if (!async_data_read_receive(&call, &size)) {
|
---|
1233 | async_answer_0(&call, EREFUSED);
|
---|
1234 | async_answer_0(icall, EREFUSED);
|
---|
1235 | return;
|
---|
1236 | }
|
---|
1237 |
|
---|
1238 | fibril_mutex_lock(&cdir.mutex);
|
---|
1239 |
|
---|
1240 | category_t *cat = category_get(&cdir, ipc_get_arg1(icall));
|
---|
1241 | if (cat == NULL) {
|
---|
1242 | fibril_mutex_unlock(&cdir.mutex);
|
---|
1243 | async_answer_0(&call, ENOENT);
|
---|
1244 | async_answer_0(icall, ENOENT);
|
---|
1245 | return;
|
---|
1246 | }
|
---|
1247 |
|
---|
1248 | category_id_t *id_buf = (category_id_t *) malloc(size);
|
---|
1249 | if (id_buf == NULL) {
|
---|
1250 | fibril_mutex_unlock(&cdir.mutex);
|
---|
1251 | async_answer_0(&call, ENOMEM);
|
---|
1252 | async_answer_0(icall, ENOMEM);
|
---|
1253 | return;
|
---|
1254 | }
|
---|
1255 |
|
---|
1256 | fibril_mutex_lock(&cat->mutex);
|
---|
1257 |
|
---|
1258 | rc = category_get_services(cat, id_buf, size, &act_size);
|
---|
1259 | if (rc != EOK) {
|
---|
1260 | fibril_mutex_unlock(&cat->mutex);
|
---|
1261 | fibril_mutex_unlock(&cdir.mutex);
|
---|
1262 | async_answer_0(&call, rc);
|
---|
1263 | async_answer_0(icall, rc);
|
---|
1264 | return;
|
---|
1265 | }
|
---|
1266 |
|
---|
1267 | fibril_mutex_unlock(&cat->mutex);
|
---|
1268 | fibril_mutex_unlock(&cdir.mutex);
|
---|
1269 |
|
---|
1270 | errno_t retval = async_data_read_finalize(&call, id_buf, size);
|
---|
1271 | free(id_buf);
|
---|
1272 |
|
---|
1273 | async_answer_1(icall, retval, act_size);
|
---|
1274 | }
|
---|
1275 |
|
---|
1276 | static void loc_null_create(ipc_call_t *icall)
|
---|
1277 | {
|
---|
1278 | fibril_mutex_lock(&null_services_mutex);
|
---|
1279 |
|
---|
1280 | unsigned int i;
|
---|
1281 | bool fnd = false;
|
---|
1282 |
|
---|
1283 | for (i = 0; i < NULL_SERVICES; i++) {
|
---|
1284 | if (null_services[i] == NULL) {
|
---|
1285 | fnd = true;
|
---|
1286 | break;
|
---|
1287 | }
|
---|
1288 | }
|
---|
1289 |
|
---|
1290 | if (!fnd) {
|
---|
1291 | fibril_mutex_unlock(&null_services_mutex);
|
---|
1292 | async_answer_0(icall, ENOMEM);
|
---|
1293 | return;
|
---|
1294 | }
|
---|
1295 |
|
---|
1296 | char null[LOC_NAME_MAXLEN];
|
---|
1297 | snprintf(null, LOC_NAME_MAXLEN, "%u", i);
|
---|
1298 |
|
---|
1299 | char *dev_name = str_dup(null);
|
---|
1300 | if (dev_name == NULL) {
|
---|
1301 | fibril_mutex_unlock(&null_services_mutex);
|
---|
1302 | async_answer_0(icall, ENOMEM);
|
---|
1303 | return;
|
---|
1304 | }
|
---|
1305 |
|
---|
1306 | loc_service_t *service =
|
---|
1307 | (loc_service_t *) malloc(sizeof(loc_service_t));
|
---|
1308 | if (service == NULL) {
|
---|
1309 | fibril_mutex_unlock(&null_services_mutex);
|
---|
1310 | async_answer_0(icall, ENOMEM);
|
---|
1311 | return;
|
---|
1312 | }
|
---|
1313 |
|
---|
1314 | fibril_mutex_lock(&services_list_mutex);
|
---|
1315 |
|
---|
1316 | loc_namespace_t *namespace = loc_namespace_create("null");
|
---|
1317 | if (namespace == NULL) {
|
---|
1318 | fibril_mutex_lock(&services_list_mutex);
|
---|
1319 | fibril_mutex_unlock(&null_services_mutex);
|
---|
1320 | async_answer_0(icall, ENOMEM);
|
---|
1321 | return;
|
---|
1322 | }
|
---|
1323 |
|
---|
1324 | link_initialize(&service->services);
|
---|
1325 | link_initialize(&service->server_services);
|
---|
1326 | list_initialize(&service->cat_memb);
|
---|
1327 |
|
---|
1328 | /* Get unique service ID */
|
---|
1329 | service->id = loc_create_id();
|
---|
1330 | service->server = NULL;
|
---|
1331 |
|
---|
1332 | loc_namespace_addref(namespace, service);
|
---|
1333 | service->name = dev_name;
|
---|
1334 |
|
---|
1335 | /*
|
---|
1336 | * Insert service into list of all services and into null services array.
|
---|
1337 | * Insert service into a dummy list of null server's services so that it
|
---|
1338 | * can be safely removed later.
|
---|
1339 | */
|
---|
1340 | list_append(&service->services, &services_list);
|
---|
1341 | list_append(&service->server_services, &dummy_null_services);
|
---|
1342 | null_services[i] = service;
|
---|
1343 |
|
---|
1344 | fibril_mutex_unlock(&services_list_mutex);
|
---|
1345 | fibril_mutex_unlock(&null_services_mutex);
|
---|
1346 |
|
---|
1347 | async_answer_1(icall, EOK, (sysarg_t) i);
|
---|
1348 | }
|
---|
1349 |
|
---|
1350 | static void loc_null_destroy(ipc_call_t *icall)
|
---|
1351 | {
|
---|
1352 | sysarg_t i = ipc_get_arg1(icall);
|
---|
1353 | if (i >= NULL_SERVICES) {
|
---|
1354 | async_answer_0(icall, ELIMIT);
|
---|
1355 | return;
|
---|
1356 | }
|
---|
1357 |
|
---|
1358 | fibril_mutex_lock(&null_services_mutex);
|
---|
1359 |
|
---|
1360 | if (null_services[i] == NULL) {
|
---|
1361 | fibril_mutex_unlock(&null_services_mutex);
|
---|
1362 | async_answer_0(icall, ENOENT);
|
---|
1363 | return;
|
---|
1364 | }
|
---|
1365 |
|
---|
1366 | fibril_mutex_lock(&services_list_mutex);
|
---|
1367 | fibril_mutex_lock(&cdir.mutex);
|
---|
1368 | loc_service_unregister_core(null_services[i]);
|
---|
1369 | fibril_mutex_unlock(&cdir.mutex);
|
---|
1370 | fibril_mutex_unlock(&services_list_mutex);
|
---|
1371 |
|
---|
1372 | null_services[i] = NULL;
|
---|
1373 |
|
---|
1374 | fibril_mutex_unlock(&null_services_mutex);
|
---|
1375 | async_answer_0(icall, EOK);
|
---|
1376 | }
|
---|
1377 |
|
---|
1378 | static void loc_service_add_to_cat(ipc_call_t *icall)
|
---|
1379 | {
|
---|
1380 | category_t *cat;
|
---|
1381 | loc_service_t *svc;
|
---|
1382 | catid_t cat_id;
|
---|
1383 | service_id_t svc_id;
|
---|
1384 | errno_t retval;
|
---|
1385 |
|
---|
1386 | svc_id = ipc_get_arg1(icall);
|
---|
1387 | cat_id = ipc_get_arg2(icall);
|
---|
1388 |
|
---|
1389 | fibril_mutex_lock(&services_list_mutex);
|
---|
1390 | fibril_mutex_lock(&cdir.mutex);
|
---|
1391 |
|
---|
1392 | cat = category_get(&cdir, cat_id);
|
---|
1393 | svc = loc_service_find_id(svc_id);
|
---|
1394 |
|
---|
1395 | if (cat == NULL || svc == NULL) {
|
---|
1396 | fibril_mutex_unlock(&cdir.mutex);
|
---|
1397 | fibril_mutex_unlock(&services_list_mutex);
|
---|
1398 | async_answer_0(icall, ENOENT);
|
---|
1399 | return;
|
---|
1400 | }
|
---|
1401 |
|
---|
1402 | fibril_mutex_lock(&cat->mutex);
|
---|
1403 | retval = category_add_service(cat, svc);
|
---|
1404 |
|
---|
1405 | fibril_mutex_unlock(&cat->mutex);
|
---|
1406 | fibril_mutex_unlock(&cdir.mutex);
|
---|
1407 | fibril_mutex_unlock(&services_list_mutex);
|
---|
1408 |
|
---|
1409 | /*
|
---|
1410 | * First send out all notifications and only then answer the request.
|
---|
1411 | * Otherwise the current fibril might block and transitively wait for
|
---|
1412 | * the completion of requests that are routed to it via an IPC loop.
|
---|
1413 | */
|
---|
1414 | loc_category_change_event();
|
---|
1415 | async_answer_0(icall, retval);
|
---|
1416 | }
|
---|
1417 |
|
---|
1418 | /** Initialize location service.
|
---|
1419 | *
|
---|
1420 | *
|
---|
1421 | */
|
---|
1422 | static bool loc_init(void)
|
---|
1423 | {
|
---|
1424 | unsigned int i;
|
---|
1425 | category_t *cat;
|
---|
1426 |
|
---|
1427 | for (i = 0; i < NULL_SERVICES; i++)
|
---|
1428 | null_services[i] = NULL;
|
---|
1429 |
|
---|
1430 | categ_dir_init(&cdir);
|
---|
1431 |
|
---|
1432 | cat = category_new("disk");
|
---|
1433 | categ_dir_add_cat(&cdir, cat);
|
---|
1434 |
|
---|
1435 | cat = category_new("partition");
|
---|
1436 | categ_dir_add_cat(&cdir, cat);
|
---|
1437 |
|
---|
1438 | cat = category_new("iplink");
|
---|
1439 | categ_dir_add_cat(&cdir, cat);
|
---|
1440 |
|
---|
1441 | cat = category_new("keyboard");
|
---|
1442 | categ_dir_add_cat(&cdir, cat);
|
---|
1443 |
|
---|
1444 | cat = category_new("mouse");
|
---|
1445 | categ_dir_add_cat(&cdir, cat);
|
---|
1446 |
|
---|
1447 | cat = category_new("led");
|
---|
1448 | categ_dir_add_cat(&cdir, cat);
|
---|
1449 |
|
---|
1450 | cat = category_new("serial");
|
---|
1451 | categ_dir_add_cat(&cdir, cat);
|
---|
1452 |
|
---|
1453 | cat = category_new("console");
|
---|
1454 | categ_dir_add_cat(&cdir, cat);
|
---|
1455 |
|
---|
1456 | cat = category_new("clock");
|
---|
1457 | categ_dir_add_cat(&cdir, cat);
|
---|
1458 |
|
---|
1459 | cat = category_new("test3");
|
---|
1460 | categ_dir_add_cat(&cdir, cat);
|
---|
1461 |
|
---|
1462 | cat = category_new("usbdiag");
|
---|
1463 | categ_dir_add_cat(&cdir, cat);
|
---|
1464 |
|
---|
1465 | cat = category_new("usbhc");
|
---|
1466 | categ_dir_add_cat(&cdir, cat);
|
---|
1467 |
|
---|
1468 | cat = category_new("virt-null");
|
---|
1469 | categ_dir_add_cat(&cdir, cat);
|
---|
1470 |
|
---|
1471 | cat = category_new("virtual");
|
---|
1472 | categ_dir_add_cat(&cdir, cat);
|
---|
1473 |
|
---|
1474 | cat = category_new("nic");
|
---|
1475 | categ_dir_add_cat(&cdir, cat);
|
---|
1476 |
|
---|
1477 | cat = category_new("ieee80211");
|
---|
1478 | categ_dir_add_cat(&cdir, cat);
|
---|
1479 |
|
---|
1480 | cat = category_new("irc");
|
---|
1481 | categ_dir_add_cat(&cdir, cat);
|
---|
1482 |
|
---|
1483 | cat = category_new("visualizer");
|
---|
1484 | categ_dir_add_cat(&cdir, cat);
|
---|
1485 |
|
---|
1486 | cat = category_new("renderer");
|
---|
1487 | categ_dir_add_cat(&cdir, cat);
|
---|
1488 |
|
---|
1489 | cat = category_new("audio-pcm");
|
---|
1490 | categ_dir_add_cat(&cdir, cat);
|
---|
1491 |
|
---|
1492 | cat = category_new("printer-port");
|
---|
1493 | categ_dir_add_cat(&cdir, cat);
|
---|
1494 |
|
---|
1495 | cat = category_new("pci");
|
---|
1496 | categ_dir_add_cat(&cdir, cat);
|
---|
1497 |
|
---|
1498 | return true;
|
---|
1499 | }
|
---|
1500 |
|
---|
1501 | /** Handle connection on supplier port.
|
---|
1502 | *
|
---|
1503 | */
|
---|
1504 | static void loc_connection_supplier(ipc_call_t *icall, void *arg)
|
---|
1505 | {
|
---|
1506 | /* Accept connection */
|
---|
1507 | async_accept_0(icall);
|
---|
1508 |
|
---|
1509 | /*
|
---|
1510 | * Each connection begins by a LOC_SERVER_REGISTER, which precludes us
|
---|
1511 | * from using parallel exchanges.
|
---|
1512 | */
|
---|
1513 | static_assert((INTERFACE_LOC_SUPPLIER & IFACE_EXCHANGE_MASK) ==
|
---|
1514 | IFACE_EXCHANGE_SERIALIZE, "");
|
---|
1515 |
|
---|
1516 | loc_server_t *server = loc_server_register();
|
---|
1517 | if (server == NULL)
|
---|
1518 | return;
|
---|
1519 |
|
---|
1520 | while (true) {
|
---|
1521 | ipc_call_t call;
|
---|
1522 | async_get_call(&call);
|
---|
1523 |
|
---|
1524 | if (!ipc_get_imethod(&call)) {
|
---|
1525 | async_answer_0(&call, EOK);
|
---|
1526 | break;
|
---|
1527 | }
|
---|
1528 |
|
---|
1529 | switch (ipc_get_imethod(&call)) {
|
---|
1530 | case LOC_SERVER_UNREGISTER:
|
---|
1531 | if (server == NULL)
|
---|
1532 | async_answer_0(&call, ENOENT);
|
---|
1533 | else
|
---|
1534 | async_answer_0(&call, EOK);
|
---|
1535 | break;
|
---|
1536 | case LOC_SERVICE_ADD_TO_CAT:
|
---|
1537 | /* Add service to category */
|
---|
1538 | loc_service_add_to_cat(&call);
|
---|
1539 | break;
|
---|
1540 | case LOC_SERVICE_REGISTER:
|
---|
1541 | /* Register one service */
|
---|
1542 | loc_service_register(&call, server);
|
---|
1543 | break;
|
---|
1544 | case LOC_SERVICE_UNREGISTER:
|
---|
1545 | /* Remove one service */
|
---|
1546 | loc_service_unregister(&call, server);
|
---|
1547 | break;
|
---|
1548 | case LOC_SERVICE_GET_ID:
|
---|
1549 | loc_service_get_id(&call);
|
---|
1550 | break;
|
---|
1551 | case LOC_NAMESPACE_GET_ID:
|
---|
1552 | loc_namespace_get_id(&call);
|
---|
1553 | break;
|
---|
1554 | default:
|
---|
1555 | async_answer_0(&call, ENOENT);
|
---|
1556 | }
|
---|
1557 | }
|
---|
1558 |
|
---|
1559 | if (server != NULL) {
|
---|
1560 | /*
|
---|
1561 | * Unregister the server and all its services.
|
---|
1562 | */
|
---|
1563 | loc_server_unregister(server);
|
---|
1564 | server = NULL;
|
---|
1565 | }
|
---|
1566 | }
|
---|
1567 |
|
---|
1568 | /** Handle connection on consumer port.
|
---|
1569 | *
|
---|
1570 | */
|
---|
1571 | static void loc_connection_consumer(ipc_call_t *icall, void *arg)
|
---|
1572 | {
|
---|
1573 | /* Accept connection */
|
---|
1574 | async_accept_0(icall);
|
---|
1575 |
|
---|
1576 | while (true) {
|
---|
1577 | ipc_call_t call;
|
---|
1578 | async_get_call(&call);
|
---|
1579 |
|
---|
1580 | if (!ipc_get_imethod(&call)) {
|
---|
1581 | async_answer_0(&call, EOK);
|
---|
1582 | break;
|
---|
1583 | }
|
---|
1584 |
|
---|
1585 | switch (ipc_get_imethod(&call)) {
|
---|
1586 | case LOC_SERVICE_GET_ID:
|
---|
1587 | loc_service_get_id(&call);
|
---|
1588 | break;
|
---|
1589 | case LOC_SERVICE_GET_NAME:
|
---|
1590 | loc_service_get_name(&call);
|
---|
1591 | break;
|
---|
1592 | case LOC_SERVICE_GET_SERVER_NAME:
|
---|
1593 | loc_service_get_server_name(&call);
|
---|
1594 | break;
|
---|
1595 | case LOC_NAMESPACE_GET_ID:
|
---|
1596 | loc_namespace_get_id(&call);
|
---|
1597 | break;
|
---|
1598 | case LOC_CALLBACK_CREATE:
|
---|
1599 | loc_callback_create(&call);
|
---|
1600 | break;
|
---|
1601 | case LOC_CATEGORY_GET_ID:
|
---|
1602 | loc_category_get_id(&call);
|
---|
1603 | break;
|
---|
1604 | case LOC_CATEGORY_GET_NAME:
|
---|
1605 | loc_category_get_name(&call);
|
---|
1606 | break;
|
---|
1607 | case LOC_CATEGORY_GET_SVCS:
|
---|
1608 | loc_category_get_svcs(&call);
|
---|
1609 | break;
|
---|
1610 | case LOC_ID_PROBE:
|
---|
1611 | loc_id_probe(&call);
|
---|
1612 | break;
|
---|
1613 | case LOC_NULL_CREATE:
|
---|
1614 | loc_null_create(&call);
|
---|
1615 | break;
|
---|
1616 | case LOC_NULL_DESTROY:
|
---|
1617 | loc_null_destroy(&call);
|
---|
1618 | break;
|
---|
1619 | case LOC_GET_NAMESPACE_COUNT:
|
---|
1620 | loc_get_namespace_count(&call);
|
---|
1621 | break;
|
---|
1622 | case LOC_GET_SERVICE_COUNT:
|
---|
1623 | loc_get_service_count(&call);
|
---|
1624 | break;
|
---|
1625 | case LOC_GET_CATEGORIES:
|
---|
1626 | loc_get_categories(&call);
|
---|
1627 | break;
|
---|
1628 | case LOC_GET_NAMESPACES:
|
---|
1629 | loc_get_namespaces(&call);
|
---|
1630 | break;
|
---|
1631 | case LOC_GET_SERVICES:
|
---|
1632 | loc_get_services(&call);
|
---|
1633 | break;
|
---|
1634 | default:
|
---|
1635 | async_answer_0(&call, ENOENT);
|
---|
1636 | }
|
---|
1637 | }
|
---|
1638 | }
|
---|
1639 |
|
---|
1640 | /**
|
---|
1641 | *
|
---|
1642 | */
|
---|
1643 | int main(int argc, char *argv[])
|
---|
1644 | {
|
---|
1645 | printf("%s: HelenOS Location Service\n", NAME);
|
---|
1646 |
|
---|
1647 | if (!loc_init()) {
|
---|
1648 | printf("%s: Error while initializing service\n", NAME);
|
---|
1649 | return -1;
|
---|
1650 | }
|
---|
1651 |
|
---|
1652 | /* Register location service at naming service */
|
---|
1653 | errno_t rc = service_register(SERVICE_LOC, INTERFACE_LOC_SUPPLIER,
|
---|
1654 | loc_connection_supplier, NULL);
|
---|
1655 | if (rc != EOK) {
|
---|
1656 | printf("%s: Error while registering supplier service: %s\n", NAME, str_error(rc));
|
---|
1657 | return rc;
|
---|
1658 | }
|
---|
1659 |
|
---|
1660 | rc = service_register(SERVICE_LOC, INTERFACE_LOC_CONSUMER,
|
---|
1661 | loc_connection_consumer, NULL);
|
---|
1662 | if (rc != EOK) {
|
---|
1663 | printf("%s: Error while registering consumer service: %s\n", NAME, str_error(rc));
|
---|
1664 | return rc;
|
---|
1665 | }
|
---|
1666 |
|
---|
1667 | rc = service_register_broker(SERVICE_LOC, loc_forward, NULL);
|
---|
1668 | if (rc != EOK) {
|
---|
1669 | printf("%s: Error while registering broker service: %s\n", NAME, str_error(rc));
|
---|
1670 |
|
---|
1671 | /* Let sysman know we are broker */
|
---|
1672 | rc = sysman_broker_register();
|
---|
1673 | if (rc != EOK) {
|
---|
1674 | printf("%s: Error registering at sysman (%i)\n", NAME, rc);
|
---|
1675 | return rc;
|
---|
1676 | }
|
---|
1677 |
|
---|
1678 | printf("%s: Accepting connections\n", NAME);
|
---|
1679 | async_manager();
|
---|
1680 |
|
---|
1681 | /* Never reached */
|
---|
1682 | return 0;
|
---|
1683 | }
|
---|
1684 |
|
---|
1685 | /**
|
---|
1686 | * @}
|
---|
1687 | */
|
---|