1 | // =================================================================== |
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2 | // |
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3 | // Copyright (c) 2005, Intel Corp. |
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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 |
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13 | // copyright notice, this list of conditions and the following |
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14 | // disclaimer in the documentation and/or other materials provided |
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15 | // with the distribution. |
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16 | // * Neither the name of Intel Corporation nor the names of its |
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17 | // contributors may be used to endorse or promote products derived |
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18 | // from this software without specific prior written permission. |
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19 | // |
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20 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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21 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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22 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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23 | // FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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24 | // COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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25 | // INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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26 | // (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
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27 | // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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28 | // HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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29 | // STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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30 | // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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31 | // OF THE POSSIBILITY OF SUCH DAMAGE. |
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32 | // =================================================================== |
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33 | // |
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34 | // dmictl.c |
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35 | // |
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36 | // Functions for creating and destroying DMIs |
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37 | // |
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38 | // ================================================================== |
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39 | |
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40 | #include <stdio.h> |
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41 | #include <unistd.h> |
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42 | #include <string.h> |
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43 | |
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44 | #include "vtpmpriv.h" |
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45 | #include "bsg.h" |
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46 | #include "buffer.h" |
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47 | #include "log.h" |
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48 | #include "hashtable.h" |
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49 | #include "hashtable_itr.h" |
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50 | #include "vtpm_ipc.h" |
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51 | |
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52 | #define TPM_EMULATOR_PATH "/usr/bin/vtpmd" |
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53 | |
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54 | // if dmi_res is non-null, then return a pointer to new object. |
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55 | // Also, this does not fill in the measurements. They should be filled by |
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56 | // design dependent code or saveNVM |
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57 | TPM_RESULT init_dmi(UINT32 dmi_id, BYTE dmi_type, VTPM_DMI_RESOURCE **dmi_res) { |
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58 | |
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59 | TPM_RESULT status=TPM_SUCCESS; |
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60 | VTPM_DMI_RESOURCE *new_dmi=NULL; |
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61 | UINT32 *dmi_id_key=NULL; |
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62 | |
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63 | if ((new_dmi = (VTPM_DMI_RESOURCE *) malloc (sizeof(VTPM_DMI_RESOURCE))) == NULL) { |
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64 | status = TPM_RESOURCES; |
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65 | goto abort_egress; |
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66 | } |
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67 | memset(new_dmi, 0, sizeof(VTPM_DMI_RESOURCE)); |
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68 | new_dmi->dmi_id = dmi_id; |
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69 | new_dmi->dmi_type = dmi_type; |
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70 | new_dmi->connected = FALSE; |
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71 | new_dmi->TCSContext = 0; |
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72 | |
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73 | new_dmi->NVMLocation = (char *) malloc(11 + strlen(DMI_NVM_FILE)); |
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74 | sprintf(new_dmi->NVMLocation, DMI_NVM_FILE, (uint32_t) new_dmi->dmi_id); |
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75 | |
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76 | if ((dmi_id_key = (UINT32 *) malloc (sizeof(UINT32))) == NULL) { |
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77 | status = TPM_RESOURCES; |
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78 | goto abort_egress; |
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79 | } |
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80 | *dmi_id_key = new_dmi->dmi_id; |
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81 | |
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82 | // install into map |
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83 | if (!hashtable_insert(vtpm_globals->dmi_map, dmi_id_key, new_dmi)){ |
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84 | vtpmlogerror(VTPM_LOG_VTPM, "Failed to insert instance into table. Aborting.\n", dmi_id); |
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85 | status = TPM_FAIL; |
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86 | goto abort_egress; |
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87 | } |
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88 | |
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89 | if (dmi_res) |
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90 | *dmi_res = new_dmi; |
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91 | |
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92 | goto egress; |
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93 | |
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94 | abort_egress: |
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95 | if (new_dmi) { |
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96 | free(new_dmi->NVMLocation); |
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97 | free(new_dmi); |
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98 | } |
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99 | free(dmi_id_key); |
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100 | |
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101 | egress: |
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102 | return status; |
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103 | } |
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104 | |
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105 | TPM_RESULT close_dmi(VTPM_DMI_RESOURCE *dmi_res) { |
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106 | if (dmi_res == NULL) |
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107 | return TPM_SUCCESS; |
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108 | |
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109 | if (dmi_res->dmi_id == VTPM_CTL_DM) |
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110 | return(TPM_BAD_PARAMETER); |
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111 | |
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112 | TCS_CloseContext(dmi_res->TCSContext); |
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113 | dmi_res->connected = FALSE; |
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114 | |
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115 | vtpm_globals->connected_dmis--; |
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116 | |
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117 | return (VTPM_Close_DMI_Extra(dmi_res) ); |
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118 | } |
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119 | |
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120 | TPM_RESULT VTPM_Handle_New_DMI(const buffer_t *param_buf) { |
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121 | |
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122 | VTPM_DMI_RESOURCE *new_dmi=NULL; |
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123 | TPM_RESULT status=TPM_FAIL; |
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124 | BYTE dmi_type, vm_type, startup_mode; |
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125 | UINT32 dmi_id; |
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126 | |
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127 | if (param_buf == NULL) { // Assume creation of Dom 0 control |
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128 | dmi_type = VTPM_TYPE_NON_MIGRATABLE; |
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129 | dmi_id = VTPM_CTL_DM; |
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130 | } else if (buffer_len(param_buf) != sizeof(BYTE) * 3 + sizeof(UINT32)) { |
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131 | vtpmloginfo(VTPM_LOG_VTPM, "New DMI command wrong length: %d.\n", buffer_len(param_buf)); |
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132 | status = TPM_BAD_PARAMETER; |
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133 | goto abort_egress; |
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134 | } else { |
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135 | vtpm_globals->connected_dmis++; // Put this here so we don't count Dom0 |
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136 | BSG_UnpackList( param_buf->bytes, 4, |
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137 | BSG_TYPE_BYTE, &dmi_type, |
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138 | BSG_TYPE_BYTE, &startup_mode, |
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139 | BSG_TYPE_BYTE, &vm_type, |
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140 | BSG_TYPE_UINT32, &dmi_id); |
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141 | } |
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142 | |
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143 | if ((dmi_type != VTPM_TYPE_NON_MIGRATABLE) && (dmi_type != VTPM_TYPE_MIGRATABLE)) { |
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144 | vtpmlogerror(VTPM_LOG_VTPM, "Creation of VTPM with illegal type.\n"); |
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145 | status = TPM_BAD_PARAMETER; |
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146 | goto abort_egress; |
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147 | } |
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148 | |
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149 | new_dmi = (VTPM_DMI_RESOURCE *) hashtable_search(vtpm_globals->dmi_map, &dmi_id); |
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150 | if (new_dmi == NULL) { |
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151 | vtpmloginfo(VTPM_LOG_VTPM, "Creating new DMI instance %d attached.\n", dmi_id ); |
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152 | // Brand New DMI. Initialize the persistent pieces |
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153 | TPMTRYRETURN(init_dmi(dmi_id, dmi_type, &new_dmi) ); |
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154 | } else |
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155 | vtpmloginfo(VTPM_LOG_VTPM, "Re-attaching DMI instance %d.\n", dmi_id); |
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156 | |
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157 | if (new_dmi->connected) { |
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158 | vtpmlogerror(VTPM_LOG_VTPM, "Attempt to re-attach, currently attached instance %d. Ignoring\n", dmi_id); |
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159 | status = TPM_BAD_PARAMETER; |
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160 | goto abort_egress; |
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161 | } |
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162 | |
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163 | if (new_dmi->dmi_type == VTPM_TYPE_MIGRATED) { |
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164 | vtpmlogerror(VTPM_LOG_VTPM, "Attempt to re-attach previously migrated instance %d without recovering first. Ignoring\n", dmi_id); |
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165 | status = TPM_BAD_PARAMETER; |
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166 | goto abort_egress; |
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167 | } |
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168 | |
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169 | // Initialize the Non-persistent pieces |
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170 | TPMTRYRETURN( TCS_OpenContext(&new_dmi->TCSContext) ); |
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171 | |
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172 | new_dmi->connected = TRUE; |
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173 | |
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174 | // Design specific new DMI code. |
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175 | // Includes: create IPCs, Measuring DMI, and maybe launching DMI |
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176 | TPMTRYRETURN(VTPM_New_DMI_Extra(new_dmi, vm_type, startup_mode) ); |
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177 | goto egress; |
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178 | |
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179 | abort_egress: |
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180 | vtpmlogerror(VTPM_LOG_VTPM, "Failed to create DMI id=%d due to status=%s. Cleaning.\n", dmi_id, tpm_get_error_name(status)); |
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181 | close_dmi(new_dmi ); |
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182 | |
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183 | egress: |
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184 | return status; |
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185 | } |
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186 | |
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187 | TPM_RESULT VTPM_Handle_Close_DMI( const buffer_t *param_buf) { |
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188 | |
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189 | TPM_RESULT status=TPM_FAIL; |
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190 | VTPM_DMI_RESOURCE *dmi_res=NULL; |
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191 | UINT32 dmi_id; |
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192 | |
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193 | if ((param_buf == NULL) || (buffer_len(param_buf) != sizeof(UINT32)) ) { |
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194 | vtpmlogerror(VTPM_LOG_VTPM, "Closing DMI has bad size."); |
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195 | status = TPM_BAD_PARAMETER; |
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196 | goto abort_egress; |
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197 | } |
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198 | |
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199 | BSG_UnpackList( param_buf->bytes, 1, |
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200 | BSG_TYPE_UINT32, &dmi_id); |
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201 | |
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202 | vtpmloginfo(VTPM_LOG_VTPM, "Closing DMI %d.\n", dmi_id); |
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203 | |
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204 | dmi_res = (VTPM_DMI_RESOURCE *) hashtable_search(vtpm_globals->dmi_map, &dmi_id); |
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205 | if (dmi_res == NULL ) { |
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206 | vtpmlogerror(VTPM_LOG_VTPM, "Trying to close nonexistent DMI.\n"); |
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207 | status = TPM_BAD_PARAMETER; |
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208 | goto abort_egress; |
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209 | } |
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210 | |
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211 | if (!dmi_res->connected) { |
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212 | vtpmlogerror(VTPM_LOG_VTPM, "Closing non-connected DMI.\n"); |
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213 | status = TPM_BAD_PARAMETER; |
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214 | goto abort_egress; |
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215 | } |
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216 | |
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217 | // Close Dmi |
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218 | TPMTRYRETURN(close_dmi( dmi_res )); |
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219 | |
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220 | status=TPM_SUCCESS; |
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221 | goto egress; |
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222 | |
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223 | abort_egress: |
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224 | egress: |
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225 | |
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226 | return status; |
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227 | } |
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228 | |
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229 | TPM_RESULT VTPM_Handle_Delete_DMI( const buffer_t *param_buf) { |
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230 | |
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231 | TPM_RESULT status=TPM_FAIL; |
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232 | VTPM_DMI_RESOURCE *dmi_res=NULL; |
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233 | UINT32 dmi_id; |
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234 | |
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235 | if ((param_buf == NULL) || (buffer_len(param_buf) != sizeof(UINT32)) ) { |
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236 | vtpmlogerror(VTPM_LOG_VTPM, "Closing DMI has bad size.\n"); |
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237 | status = TPM_BAD_PARAMETER; |
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238 | goto abort_egress; |
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239 | } |
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240 | |
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241 | BSG_UnpackList( param_buf->bytes, 1, |
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242 | BSG_TYPE_UINT32, &dmi_id); |
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243 | |
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244 | vtpmloginfo(VTPM_LOG_VTPM, "Deleting DMI %d.\n", dmi_id); |
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245 | |
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246 | dmi_res = (VTPM_DMI_RESOURCE *) hashtable_remove(vtpm_globals->dmi_map, &dmi_id); |
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247 | if (dmi_res == NULL) { |
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248 | vtpmlogerror(VTPM_LOG_VTPM, "Closing non-existent DMI.\n"); |
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249 | status = TPM_BAD_PARAMETER; |
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250 | goto abort_egress; |
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251 | } |
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252 | |
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253 | //vtpm scripts delete file dmi_res->NVMLocation for us |
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254 | |
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255 | // Close DMI first |
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256 | TPMTRYRETURN(close_dmi( dmi_res )); |
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257 | free ( dmi_res ); |
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258 | |
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259 | status=TPM_SUCCESS; |
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260 | goto egress; |
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261 | |
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262 | abort_egress: |
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263 | egress: |
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264 | |
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265 | return status; |
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266 | } |
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