Darin Petkov | c1a8b42 | 2010-07-19 11:34:49 -0700 | [diff] [blame] | 1 | // Copyright (c) 2010 The Chromium Authors. All rights reserved. |
adlr@google.com | 3defe6a | 2009-12-04 20:57:17 +0000 | [diff] [blame] | 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include "update_engine/set_bootable_flag_action.h" |
| 6 | #include <sys/stat.h> |
| 7 | #include <sys/types.h> |
| 8 | #include <errno.h> |
| 9 | #include <fcntl.h> |
| 10 | #include <string> |
Andrew de los Reyes | f971443 | 2010-05-04 10:21:23 -0700 | [diff] [blame] | 11 | #include <vector> |
| 12 | #include "update_engine/subprocess.h" |
adlr@google.com | 3defe6a | 2009-12-04 20:57:17 +0000 | [diff] [blame] | 13 | #include "update_engine/utils.h" |
| 14 | |
| 15 | using std::string; |
Andrew de los Reyes | f971443 | 2010-05-04 10:21:23 -0700 | [diff] [blame] | 16 | using std::vector; |
adlr@google.com | 3defe6a | 2009-12-04 20:57:17 +0000 | [diff] [blame] | 17 | |
| 18 | namespace chromeos_update_engine { |
| 19 | |
Andrew de los Reyes | f971443 | 2010-05-04 10:21:23 -0700 | [diff] [blame] | 20 | namespace { |
| 21 | const char* const kGpt = "/usr/bin/gpt"; |
| 22 | const ssize_t kPmbrLength = 512; |
| 23 | } |
| 24 | |
adlr@google.com | 3defe6a | 2009-12-04 20:57:17 +0000 | [diff] [blame] | 25 | void SetBootableFlagAction::PerformAction() { |
| 26 | ScopedActionCompleter completer(processor_, this); |
| 27 | |
Andrew de los Reyes | f971443 | 2010-05-04 10:21:23 -0700 | [diff] [blame] | 28 | TEST_AND_RETURN(HasInputObject()); |
| 29 | const InstallPlan install_plan = GetInputObject(); |
| 30 | TEST_AND_RETURN(!install_plan.install_path.empty()); |
| 31 | const string partition = install_plan.install_path; |
| 32 | string root_device = utils::RootDevice(partition); |
| 33 | string partition_number = utils::PartitionNumber(partition); |
| 34 | |
| 35 | utils::BootLoader boot_loader; |
| 36 | TEST_AND_RETURN(utils::GetBootloader(&boot_loader)); |
| 37 | |
| 38 | // For now, only support Syslinux bootloader |
| 39 | TEST_AND_RETURN(boot_loader == utils::BootLoader_SYSLINUX); |
| 40 | |
| 41 | string temp_file; |
| 42 | TEST_AND_RETURN(utils::MakeTempFile("/tmp/pmbr_copy.XXXXXX", |
| 43 | &temp_file, |
| 44 | NULL)); |
| 45 | ScopedPathUnlinker temp_file_unlinker(temp_file); |
| 46 | |
| 47 | // Copy existing PMBR to temp file |
| 48 | vector<char> buf(kPmbrLength); |
| 49 | { |
| 50 | int fd = open(root_device.c_str(), O_RDONLY); |
| 51 | TEST_AND_RETURN(fd >= 0); |
| 52 | ScopedFdCloser fd_closer(&fd); |
| 53 | ssize_t bytes_read; |
| 54 | TEST_AND_RETURN(utils::PReadAll(fd, &buf[0], buf.size(), 0, &bytes_read)); |
adlr@google.com | 3defe6a | 2009-12-04 20:57:17 +0000 | [diff] [blame] | 55 | } |
Andrew de los Reyes | f971443 | 2010-05-04 10:21:23 -0700 | [diff] [blame] | 56 | TEST_AND_RETURN(utils::WriteFile(temp_file.c_str(), &buf[0], buf.size())); |
adlr@google.com | 3defe6a | 2009-12-04 20:57:17 +0000 | [diff] [blame] | 57 | |
Andrew de los Reyes | f971443 | 2010-05-04 10:21:23 -0700 | [diff] [blame] | 58 | // Call gpt tool to do the work |
| 59 | vector<string> command; |
| 60 | command.push_back(kGpt); |
| 61 | command.push_back("-S"); |
| 62 | command.push_back("boot"); |
| 63 | command.push_back("-i"); |
| 64 | command.push_back(partition_number); |
| 65 | command.push_back("-b"); |
| 66 | command.push_back(temp_file); |
| 67 | command.push_back(root_device); |
| 68 | int rc = 0; |
| 69 | Subprocess::SynchronousExec(command, &rc); |
| 70 | TEST_AND_RETURN(rc == 0); |
adlr@google.com | 3defe6a | 2009-12-04 20:57:17 +0000 | [diff] [blame] | 71 | |
Darin Petkov | c1a8b42 | 2010-07-19 11:34:49 -0700 | [diff] [blame] | 72 | completer.set_code(kActionCodeSuccess); |
Andrew de los Reyes | f971443 | 2010-05-04 10:21:23 -0700 | [diff] [blame] | 73 | if (HasOutputPipe()) |
| 74 | SetOutputObject(GetInputObject()); |
adlr@google.com | 3defe6a | 2009-12-04 20:57:17 +0000 | [diff] [blame] | 75 | } |
| 76 | |
adlr@google.com | 3defe6a | 2009-12-04 20:57:17 +0000 | [diff] [blame] | 77 | } // namespace chromeos_update_engine |