1 # Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
2 # Use of this source code is governed by a BSD-style license that can be
3 # found in the LICENSE file.
5 """Script to generate a sysroot tarball.
7 Script that generates a tarball containing changes that are needed to create a
8 complete sysroot from extracted prebuilt packages.
11 from __future__ import print_function
15 from chromite.cbuildbot import constants
16 from chromite.lib import commandline
17 from chromite.lib import cros_build_lib
18 from chromite.lib import osutils
19 from chromite.lib import portage_util
21 _CREATE_BATCH_CMD = ('rsync',)
22 _CREATE_BATCH_EXCLUDE = ('--exclude=/tmp/', '--exclude=/var/cache/',
23 '--exclude=/usr/local/autotest/packages**',
24 '--exclude=/packages/', '--exclude=**.pyc',
26 # rsync is used in archive mode with no --times.
27 # --checksum is used to ensure 100% accuracy.
28 # --delete is used to account for files that may be deleted during emerge.
29 # Short version: rsync -rplgoDc --delete
30 _CREATE_BATCH_ARGS = ('--recursive', '--links', '--perms', '--group',
31 '--owner', '--devices', '--specials', '--checksum',
34 # We want to ensure that we use only binary packages. However,
35 # build_packages will try to rebuild any unbuilt packages. Ignore those through
37 _BUILD_PKGS_CMD = (os.path.join(constants.CROSUTILS_DIR, 'build_packages'),
38 '--skip_chroot_upgrade', '--norebuild', '--usepkgonly')
41 def CreateBatchFile(build_dir, out_dir, batch_file):
42 """Creates a batch file using rsync between build_dir and out_dir.
44 This batch file can be applied to any directory identical to out_dir, to make
45 it identical to build_dir.
48 build_dir: Directory to rsync from.
49 out_dir: Directory to rsync to.
50 batch_file: Batch file to be created.
52 cmd = list(_CREATE_BATCH_CMD)
53 cmd.extend(list(_CREATE_BATCH_EXCLUDE))
54 cmd.extend(list(_CREATE_BATCH_ARGS))
55 cmd.extend(['--only-write-batch=' + batch_file, build_dir + '/', out_dir])
56 cros_build_lib.SudoRunCommand(cmd)
59 def _ParseCommandLine(argv):
60 """Parse args, and run environment-independent checks."""
61 parser = commandline.ArgumentParser(description=__doc__)
62 parser.add_argument('--board', required=True,
63 help='The board to generate the sysroot for.')
64 parser.add_argument('--out-dir', type=osutils.ExpandPath, required=True,
65 help='Directory to place the generated tarball.')
66 parser.add_argument('--out-batch', default=constants.DELTA_SYSROOT_BATCH,
67 help='The name to give to the batch file. Defaults to %r.'
68 % constants.DELTA_SYSROOT_BATCH)
69 parser.add_argument('--out-file', default=constants.DELTA_SYSROOT_TAR,
70 help='The name to give to the tarball. Defaults to %r.'
71 % constants.DELTA_SYSROOT_TAR)
72 parser.add_argument('--skip-tests', action='store_false', default=True,
74 help='If we should not build the autotests packages.')
75 options = parser.parse_args(argv)
80 def FinishParsing(options):
81 """Run environment dependent checks on parsed args."""
82 target = os.path.join(options.out_dir, options.out_file)
83 if os.path.exists(target):
84 cros_build_lib.Die('Output file %r already exists.' % target)
86 if not os.path.isdir(options.out_dir):
88 'Non-existent directory %r specified for --out-dir' % options.out_dir)
91 def GenerateSysroot(sysroot, board, build_tests, unpack_only=False):
92 """Create a sysroot using only binary packages from local binhost.
95 sysroot: Where we want to place the sysroot.
96 board: Board we want to build for.
97 build_tests: If we should include autotest packages.
98 unpack_only: If we only want to unpack the binary packages, and not build
101 osutils.SafeMakedirs(sysroot)
103 cros_build_lib.RunCommand(
104 [os.path.join(constants.CROSUTILS_DIR, 'install_toolchain'),
105 '--noconfigure', '--board_root', sysroot, '--board', board])
106 cmd = list(_BUILD_PKGS_CMD)
107 cmd.extend(['--board_root', sysroot, '--board', board])
109 cmd.append('--unpackonly')
111 cmd.append('--nowithautotest')
112 env = {'USE': os.environ.get('USE', ''),
113 'PORTAGE_BINHOST': 'file://localhost%s' %
114 portage_util.GetBinaryPackageDir(board)}
115 cros_build_lib.RunCommand(cmd, extra_env=env)
119 """Generate a tarball containing a sysroot that can be patched over
120 extracted prebuilt package contents to create a complete sysroot.
122 1. Unpack all packages for a board into an unpack_only sysroot directory.
123 2. Emerge all packages for a board into a build sysroot directory.
124 3. Create a batch file using:
125 rsync -rplgoDc --delete --write-batch=<batch> <build_sys> <unpackonly_sys>
126 4. Put the batch file inside a tarball.
128 options = _ParseCommandLine(argv)
129 FinishParsing(options)
131 cros_build_lib.AssertInsideChroot()
133 with osutils.TempDir(set_global=False, sudo_rm=True) as tmp_dir:
134 build_sysroot = os.path.join(tmp_dir, 'build-sys')
135 unpackonly_sysroot = os.path.join(tmp_dir, 'tmp-sys')
136 batch_filename = options.out_batch
138 GenerateSysroot(unpackonly_sysroot, options.board, options.build_tests,
140 GenerateSysroot(build_sysroot, options.board, options.build_tests,
143 # Finally create batch file.
144 CreateBatchFile(build_sysroot, unpackonly_sysroot,
145 os.path.join(tmp_dir, batch_filename))
147 cros_build_lib.CreateTarball(
148 os.path.join(options.out_dir, options.out_file), tmp_dir, sudo=True,
149 inputs=[batch_filename])