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-rw-r--r--updater/blockimg.cpp117
1 files changed, 54 insertions, 63 deletions
diff --git a/updater/blockimg.cpp b/updater/blockimg.cpp
index 4a70b98a1..5d6da6cb3 100644
--- a/updater/blockimg.cpp
+++ b/updater/blockimg.cpp
@@ -57,6 +57,7 @@
#include "otautil/paths.h"
#include "otautil/print_sha1.h"
#include "otautil/rangeset.h"
+#include "private/commands.h"
#include "updater/install.h"
#include "updater/updater.h"
@@ -546,8 +547,8 @@ static int WriteBlocks(const RangeSet& tgt, const std::vector<uint8_t>& buffer,
struct CommandParameters {
std::vector<std::string> tokens;
size_t cpos;
- const char* cmdname;
- const char* cmdline;
+ std::string cmdname;
+ std::string cmdline;
std::string freestash;
std::string stashbase;
bool canwrite;
@@ -1496,23 +1497,13 @@ static int PerformCommandErase(CommandParameters& params) {
return 0;
}
-// Definitions for transfer list command functions
-typedef int (*CommandFunction)(CommandParameters&);
+using CommandFunction = std::function<int(CommandParameters&)>;
-struct Command {
- const char* name;
- CommandFunction f;
-};
-
-// args:
-// - block device (or file) to modify in-place
-// - transfer list (blob)
-// - new data stream (filename within package.zip)
-// - patch stream (filename within package.zip, must be uncompressed)
+using CommandMap = std::unordered_map<Command::Type, CommandFunction>;
static Value* PerformBlockImageUpdate(const char* name, State* state,
const std::vector<std::unique_ptr<Expr>>& argv,
- const Command* commands, size_t cmdcount, bool dryrun) {
+ const CommandMap& command_map, bool dryrun) {
CommandParameters params = {};
params.canwrite = !dryrun;
@@ -1532,6 +1523,11 @@ static Value* PerformBlockImageUpdate(const char* name, State* state,
return nullptr;
}
+ // args:
+ // - block device (or file) to modify in-place
+ // - transfer list (blob)
+ // - new data stream (filename within package.zip)
+ // - patch stream (filename within package.zip, must be uncompressed)
const std::unique_ptr<Value>& blockdev_filename = args[0];
const std::unique_ptr<Value>& transfer_list_value = args[1];
const std::unique_ptr<Value>& new_data_fn = args[2];
@@ -1707,16 +1703,6 @@ static Value* PerformBlockImageUpdate(const char* name, State* state,
skip_executed_command = false;
}
- // Build a map of the available commands
- std::unordered_map<std::string, const Command*> cmd_map;
- for (size_t i = 0; i < cmdcount; ++i) {
- if (cmd_map.find(commands[i].name) != cmd_map.end()) {
- LOG(ERROR) << "Error: command [" << commands[i].name << "] already exists in the cmd map.";
- return StringValue("");
- }
- cmd_map[commands[i].name] = &commands[i];
- }
-
int rc = -1;
static constexpr size_t kTransferListHeaderLines = 4;
@@ -1728,36 +1714,35 @@ static Value* PerformBlockImageUpdate(const char* name, State* state,
size_t cmdindex = i - kTransferListHeaderLines;
params.tokens = android::base::Split(line, " ");
params.cpos = 0;
- params.cmdname = params.tokens[params.cpos++].c_str();
- params.cmdline = line.c_str();
+ params.cmdname = params.tokens[params.cpos++];
+ params.cmdline = line;
params.target_verified = false;
- if (cmd_map.find(params.cmdname) == cmd_map.end()) {
+ Command::Type cmd_type = Command::ParseType(params.cmdname);
+ if (cmd_type == Command::Type::LAST) {
LOG(ERROR) << "unexpected command [" << params.cmdname << "]";
goto pbiudone;
}
- const Command* cmd = cmd_map[params.cmdname];
+ const CommandFunction& performer = command_map.at(cmd_type);
// Skip the command if we explicitly set the corresponding function pointer to nullptr, e.g.
// "erase" during block_image_verify.
- if (cmd->f == nullptr) {
+ if (performer == nullptr) {
LOG(DEBUG) << "skip executing command [" << line << "]";
continue;
}
- std::string cmdname = std::string(params.cmdname);
-
// Skip all commands before the saved last command index when resuming an update, except for
// "new" command. Because new commands read in the data sequentially.
if (params.canwrite && skip_executed_command && cmdindex <= saved_last_command_index &&
- cmdname != "new") {
+ cmd_type != Command::Type::NEW) {
LOG(INFO) << "Skipping already executed command: " << cmdindex
<< ", last executed command for previous update: " << saved_last_command_index;
continue;
}
- if (cmd->f(params) == -1) {
+ if (performer(params) == -1) {
LOG(ERROR) << "failed to execute command [" << line << "]";
goto pbiudone;
}
@@ -1767,7 +1752,8 @@ static Value* PerformBlockImageUpdate(const char* name, State* state,
// that we will resume the update from the first command in the transfer list.
if (!params.canwrite && skip_executed_command && cmdindex <= saved_last_command_index) {
// TODO(xunchang) check that the cmdline of the saved index is correct.
- if ((cmdname == "move" || cmdname == "bsdiff" || cmdname == "imgdiff") &&
+ if ((cmd_type == Command::Type::MOVE || cmd_type == Command::Type::BSDIFF ||
+ cmd_type == Command::Type::IMGDIFF) &&
!params.target_verified) {
LOG(WARNING) << "Previously executed command " << saved_last_command_index << ": "
<< params.cmdline << " doesn't produce expected target blocks.";
@@ -1775,6 +1761,7 @@ static Value* PerformBlockImageUpdate(const char* name, State* state,
DeleteLastCommandFile();
}
}
+
if (params.canwrite) {
if (ota_fsync(params.fd) == -1) {
failure_type = kFsyncFailure;
@@ -1911,38 +1898,42 @@ pbiudone:
*/
Value* BlockImageVerifyFn(const char* name, State* state,
const std::vector<std::unique_ptr<Expr>>& argv) {
- // Commands which are not tested are set to nullptr to skip them completely
- const Command commands[] = {
- { "bsdiff", PerformCommandDiff },
- { "erase", nullptr },
- { "free", PerformCommandFree },
- { "imgdiff", PerformCommandDiff },
- { "move", PerformCommandMove },
- { "new", nullptr },
- { "stash", PerformCommandStash },
- { "zero", nullptr }
- };
-
- // Perform a dry run without writing to test if an update can proceed
- return PerformBlockImageUpdate(name, state, argv, commands,
- sizeof(commands) / sizeof(commands[0]), true);
+ // Commands which are not allowed are set to nullptr to skip them completely.
+ const CommandMap command_map{
+ // clang-format off
+ { Command::Type::BSDIFF, PerformCommandDiff },
+ { Command::Type::ERASE, nullptr },
+ { Command::Type::FREE, PerformCommandFree },
+ { Command::Type::IMGDIFF, PerformCommandDiff },
+ { Command::Type::MOVE, PerformCommandMove },
+ { Command::Type::NEW, nullptr },
+ { Command::Type::STASH, PerformCommandStash },
+ { Command::Type::ZERO, nullptr },
+ // clang-format on
+ };
+ CHECK_EQ(static_cast<size_t>(Command::Type::LAST), command_map.size());
+
+ // Perform a dry run without writing to test if an update can proceed.
+ return PerformBlockImageUpdate(name, state, argv, command_map, true);
}
Value* BlockImageUpdateFn(const char* name, State* state,
const std::vector<std::unique_ptr<Expr>>& argv) {
- const Command commands[] = {
- { "bsdiff", PerformCommandDiff },
- { "erase", PerformCommandErase },
- { "free", PerformCommandFree },
- { "imgdiff", PerformCommandDiff },
- { "move", PerformCommandMove },
- { "new", PerformCommandNew },
- { "stash", PerformCommandStash },
- { "zero", PerformCommandZero }
- };
-
- return PerformBlockImageUpdate(name, state, argv, commands,
- sizeof(commands) / sizeof(commands[0]), false);
+ const CommandMap command_map{
+ // clang-format off
+ { Command::Type::BSDIFF, PerformCommandDiff },
+ { Command::Type::ERASE, PerformCommandErase },
+ { Command::Type::FREE, PerformCommandFree },
+ { Command::Type::IMGDIFF, PerformCommandDiff },
+ { Command::Type::MOVE, PerformCommandMove },
+ { Command::Type::NEW, PerformCommandNew },
+ { Command::Type::STASH, PerformCommandStash },
+ { Command::Type::ZERO, PerformCommandZero },
+ // clang-format on
+ };
+ CHECK_EQ(static_cast<size_t>(Command::Type::LAST), command_map.size());
+
+ return PerformBlockImageUpdate(name, state, argv, command_map, false);
}
Value* RangeSha1Fn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-04 01:15:40 +0100