externalsrc: avoid race in temporary git index file
Use a unique tempfile as the temporary git index file when determining the git hash of the source tree. A fixed filename was obviously causing races (with the git index.lock file) under oe-selftest where multiple bitbake instances were run against the same source tree at the same time. (From OE-Core rev: f81c641022c26a9b89fac769e0f2889eaec5d32f) Signed-off-by: Markus Lehtonen <markus.lehtonen@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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@ -130,21 +130,22 @@ python externalsrc_compile_prefunc() {
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def srctree_hash_files(d):
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import shutil
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import subprocess
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import tempfile
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s_dir = d.getVar('EXTERNALSRC', True)
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git_dir = os.path.join(s_dir, '.git')
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oe_index_file = os.path.join(git_dir, 'oe-devtool-index')
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oe_hash_file = os.path.join(git_dir, 'oe-devtool-tree-sha1')
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ret = " "
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if os.path.exists(git_dir):
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# Clone index
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shutil.copy2(os.path.join(git_dir, 'index'), oe_index_file)
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# Update our custom index
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env = os.environ.copy()
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env['GIT_INDEX_FILE'] = oe_index_file
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subprocess.check_output(['git', 'add', '.'], cwd=s_dir, env=env)
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sha1 = subprocess.check_output(['git', 'write-tree'], cwd=s_dir, env=env)
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with tempfile.NamedTemporaryFile(dir=git_dir, prefix='oe-devtool-index') as tmp_index:
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# Clone index
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shutil.copy2(os.path.join(git_dir, 'index'), tmp_index.name)
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# Update our custom index
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env = os.environ.copy()
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env['GIT_INDEX_FILE'] = tmp_index.name
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subprocess.check_output(['git', 'add', '.'], cwd=s_dir, env=env)
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sha1 = subprocess.check_output(['git', 'write-tree'], cwd=s_dir, env=env)
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with open(oe_hash_file, 'w') as fobj:
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fobj.write(sha1)
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ret = oe_hash_file + ':True'
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