1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include <sysexits.h> 18 #include <android/hardware/boot/1.0/IBootControl.h> 19 20 using android::sp; 21 22 using android::hardware::hidl_string; 23 using android::hardware::Return; 24 25 using android::hardware::boot::V1_0::BoolResult; 26 using android::hardware::boot::V1_0::IBootControl; 27 using android::hardware::boot::V1_0::CommandResult; 28 using android::hardware::boot::V1_0::Slot; 29 30 static void usage(FILE* where, int /* argc */, char* argv[]) 31 { 32 fprintf(where, 33 "%s - command-line wrapper for the boot HAL.\n" 34 "\n" 35 "Usage:\n" 36 " %s COMMAND\n" 37 "\n" 38 "Commands:\n" 39 " %s hal-info - Show info about boot_control HAL used.\n" 40 " %s get-number-slots - Prints number of slots.\n" 41 " %s get-current-slot - Prints currently running SLOT.\n" 42 " %s mark-boot-successful - Mark current slot as GOOD.\n" 43 " %s set-active-boot-slot SLOT - On next boot, load and execute SLOT.\n" 44 " %s set-slot-as-unbootable SLOT - Mark SLOT as invalid.\n" 45 " %s is-slot-bootable SLOT - Returns 0 only if SLOT is bootable.\n" 46 " %s is-slot-marked-successful SLOT - Returns 0 only if SLOT is marked GOOD.\n" 47 " %s get-suffix SLOT - Prints suffix for SLOT.\n" 48 "\n" 49 "SLOT parameter is the zero-based slot-number.\n", 50 argv[0], argv[0], argv[0], argv[0], argv[0], argv[0], 51 argv[0], argv[0], argv[0], argv[0], argv[0]); 52 } 53 54 static int do_hal_info(const sp<IBootControl> module) { 55 module->interfaceDescriptor([&](const auto& descriptor) { 56 fprintf(stdout, 57 "HAL Version: %s\n", 58 descriptor.c_str()); 59 }); 60 return EX_OK; 61 } 62 63 static int do_get_number_slots(sp<IBootControl> module) 64 { 65 uint32_t numSlots = module->getNumberSlots(); 66 fprintf(stdout, "%u\n", numSlots); 67 return EX_OK; 68 } 69 70 static int do_get_current_slot(sp<IBootControl> module) 71 { 72 Slot curSlot = module->getCurrentSlot(); 73 fprintf(stdout, "%u\n", curSlot); 74 return EX_OK; 75 } 76 77 static std::function<void(CommandResult)> generate_callback(CommandResult *crp) { 78 return [=](CommandResult cr){ 79 *crp = cr; 80 }; 81 } 82 83 static int handle_return(const Return<void> &ret, CommandResult cr, const char* errStr) { 84 if (!ret.isOk()) { 85 fprintf(stderr, errStr, ret.description().c_str()); 86 return EX_SOFTWARE; 87 } else if (!cr.success) { 88 fprintf(stderr, errStr, cr.errMsg.c_str()); 89 return EX_SOFTWARE; 90 } 91 return EX_OK; 92 } 93 94 static int do_mark_boot_successful(sp<IBootControl> module) 95 { 96 CommandResult cr; 97 Return<void> ret = module->markBootSuccessful(generate_callback(&cr)); 98 return handle_return(ret, cr, "Error marking as having booted successfully: %s\n"); 99 } 100 101 static int do_set_active_boot_slot(sp<IBootControl> module, 102 Slot slot_number) 103 { 104 CommandResult cr; 105 Return<void> ret = module->setActiveBootSlot(slot_number, generate_callback(&cr)); 106 return handle_return(ret, cr, "Error setting active boot slot: %s\n"); 107 } 108 109 static int do_set_slot_as_unbootable(sp<IBootControl> module, 110 Slot slot_number) 111 { 112 CommandResult cr; 113 Return<void> ret = module->setSlotAsUnbootable(slot_number, generate_callback(&cr)); 114 return handle_return(ret, cr, "Error setting slot as unbootable: %s\n"); 115 } 116 117 static int handle_return(const Return<BoolResult> &ret, const char* errStr) { 118 if (!ret.isOk()) { 119 fprintf(stderr, errStr, ret.description().c_str()); 120 return EX_SOFTWARE; 121 } else if (ret == BoolResult::INVALID_SLOT) { 122 fprintf(stderr, errStr, "Invalid slot"); 123 return EX_SOFTWARE; 124 } else if (ret == BoolResult::TRUE) { 125 return EX_OK; 126 } 127 return EX_SOFTWARE; 128 } 129 130 static int do_is_slot_bootable(sp<IBootControl> module, Slot slot_number) 131 { 132 Return<BoolResult> ret = module->isSlotBootable(slot_number); 133 return handle_return(ret, "Error calling isSlotBootable(): %s\n"); 134 } 135 136 static int do_is_slot_marked_successful(sp<IBootControl> module, 137 Slot slot_number) 138 { 139 Return<BoolResult> ret = module->isSlotMarkedSuccessful(slot_number); 140 return handle_return(ret, "Error calling isSlotMarkedSuccessful(): %s\n"); 141 } 142 143 144 static int do_get_suffix(sp<IBootControl> module, Slot slot_number) { 145 std::function<void(hidl_string)> cb = [](hidl_string suffix){ 146 fprintf(stdout, "%s\n", suffix.c_str()); 147 }; 148 Return<void> ret = module->getSuffix(slot_number, cb); 149 if (!ret.isOk()) { 150 fprintf(stderr, "Error calling getSuffix(): %s\n", 151 ret.description().c_str()); 152 return EX_SOFTWARE; 153 } 154 return EX_OK; 155 } 156 157 static uint32_t parse_slot(int pos, int argc, char *argv[]) 158 { 159 if (pos > argc - 1) { 160 usage(stderr, argc, argv); 161 exit(EX_USAGE); 162 return -1; 163 } 164 errno = 0; 165 uint64_t ret = strtoul(argv[pos], NULL, 10); 166 if (errno != 0 || ret > UINT_MAX) { 167 usage(stderr, argc, argv); 168 exit(EX_USAGE); 169 return -1; 170 } 171 return (uint32_t)ret; 172 } 173 174 int main(int argc, char *argv[]) 175 { 176 sp<IBootControl> module; 177 int ret; 178 179 if (argc < 2) { 180 usage(stderr, argc, argv); 181 return EX_USAGE; 182 } 183 184 module = IBootControl::getService(); 185 if (module == NULL) { 186 fprintf(stderr, "Error getting bootctrl module.\n"); 187 return EX_SOFTWARE; 188 } 189 190 if (strcmp(argv[1], "hal-info") == 0) { 191 return do_hal_info(module); 192 } else if (strcmp(argv[1], "get-number-slots") == 0) { 193 return do_get_number_slots(module); 194 } else if (strcmp(argv[1], "get-current-slot") == 0) { 195 return do_get_current_slot(module); 196 } else if (strcmp(argv[1], "mark-boot-successful") == 0) { 197 return do_mark_boot_successful(module); 198 } else if (strcmp(argv[1], "set-active-boot-slot") == 0) { 199 return do_set_active_boot_slot(module, parse_slot(2, argc, argv)); 200 } else if (strcmp(argv[1], "set-slot-as-unbootable") == 0) { 201 return do_set_slot_as_unbootable(module, parse_slot(2, argc, argv)); 202 } else if (strcmp(argv[1], "is-slot-bootable") == 0) { 203 return do_is_slot_bootable(module, parse_slot(2, argc, argv)); 204 } else if (strcmp(argv[1], "get-suffix") == 0) { 205 return do_get_suffix(module, parse_slot(2, argc, argv)); 206 } else if (strcmp(argv[1], "is-slot-marked-successful") == 0) { 207 return do_is_slot_marked_successful(module, parse_slot(2, argc, argv)); 208 } else { 209 usage(stderr, argc, argv); 210 return EX_USAGE; 211 } 212 213 return 0; 214 } 215
