#!/usr/bin/env python3
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#
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# SPDX-License-Identifier: GPL-2.0-only
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#
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import os
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import sys
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import shutil
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import errno
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import time
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def mkdir(d):
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try:
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os.makedirs(d)
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except OSError as e:
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if e.errno != errno.EEXIST:
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raise e
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# extract the hash from past the last colon to last underscore
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def extract_sha(filename):
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return filename.split(':')[7].split('_')[0]
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# get all files in a directory, extract hash and make
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# a map from hash to list of file with that hash
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def map_sha_to_files(dir_, prefix, sha_map):
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sstate_prefix_path = dir_ + '/' + prefix + '/'
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if not os.path.exists(sstate_prefix_path):
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return
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sstate_files = os.listdir(sstate_prefix_path)
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for f in sstate_files:
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try:
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sha = extract_sha(f)
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if sha not in sha_map:
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sha_map[sha] = []
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sha_map[sha].append(sstate_prefix_path + f)
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except IndexError:
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continue
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# given a prefix build a map of hash to list of files
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def build_sha_cache(prefix):
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sha_map = {}
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sstate_dir = sys.argv[2]
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map_sha_to_files(sstate_dir, prefix, sha_map)
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native_sstate_dir = sys.argv[2] + '/' + sys.argv[4]
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map_sha_to_files(native_sstate_dir, prefix, sha_map)
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return sha_map
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if len(sys.argv) < 5:
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print("Incorrect number of arguments specified")
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print("syntax: gen-lockedsig-cache <locked-sigs.inc> <input-cachedir> <output-cachedir> <nativelsbstring> [filterfile]")
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sys.exit(1)
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filterlist = []
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if len(sys.argv) > 5:
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print('Reading filter file %s' % sys.argv[5])
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with open(sys.argv[5]) as f:
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for l in f.readlines():
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if ":" in l:
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filterlist.append(l.rstrip())
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print('Reading %s' % sys.argv[1])
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sigs = []
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with open(sys.argv[1]) as f:
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for l in f.readlines():
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if ":" in l:
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task, sig = l.split()[0].rsplit(':', 1)
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if filterlist and not task in filterlist:
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print('Filtering out %s' % task)
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else:
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sigs.append(sig)
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print('Gathering file list')
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start_time = time.perf_counter()
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files = set()
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sstate_content_cache = {}
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for s in sigs:
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prefix = s[:2]
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prefix2 = s[2:4]
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if prefix not in sstate_content_cache:
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sstate_content_cache[prefix] = {}
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if prefix2 not in sstate_content_cache[prefix]:
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sstate_content_cache[prefix][prefix2] = build_sha_cache(prefix + "/" + prefix2)
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if s in sstate_content_cache[prefix][prefix2]:
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for f in sstate_content_cache[prefix][prefix2][s]:
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files.add(f)
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elapsed = time.perf_counter() - start_time
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print("Gathering file list took %.1fs" % elapsed)
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print('Processing files')
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for f in files:
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sys.stdout.write('Processing %s... ' % f)
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_, ext = os.path.splitext(f)
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if not ext in ['.tgz', '.siginfo', '.sig']:
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# Most likely a temp file, skip it
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print('skipping')
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continue
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dst = os.path.join(sys.argv[3], os.path.relpath(f, sys.argv[2]))
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destdir = os.path.dirname(dst)
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mkdir(destdir)
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src = os.path.realpath(f)
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if os.path.exists(dst):
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os.remove(dst)
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if (os.stat(src).st_dev == os.stat(destdir).st_dev):
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print('linking')
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try:
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os.link(src, dst)
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except OSError as e:
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print('hard linking failed, copying')
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shutil.copyfile(src, dst)
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else:
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print('copying')
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shutil.copyfile(src, dst)
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print('Done!')
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