SafeStack: Package SafeStack runtime for Linux

Bug: 864705
Change-Id: I8ebce1fd5911f90b8313a27f9d9e11e229ec0b6b
Reviewed-on: https://chromium-review.googlesource.com/1162757
Commit-Queue: Vlad Tsyrklevich <vtsyrklevich@chromium.org>
Reviewed-by: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#581690}

docs/updating_clang.md

@@ -18,6 +18,8 @@
             gs://chromium-browser-clang/$x/llvmobjdump-$rev.tgz ; \
         gsutil.py cp -n -a public-read gs://chromium-browser-clang-staging/$x/llvmcfiverify-$rev.tgz \
             gs://chromium-browser-clang/$x/llvmcfiverify-$rev.tgz ; \
+        gsutil.py cp -n -a public-read gs://chromium-browser-clang-staging/$x/safestack-$rev.tgz \
+            gs://chromium-browser-clang/$x/safestack-$rev.tgz ; \
         gsutil.py cp -n -a public-read gs://chromium-browser-clang-staging/$x/translation_unit-$rev.tgz \
             gs://chromium-browser-clang/$x/translation_unit-$rev.tgz ; \
         gsutil.py cp -n -a public-read gs://chromium-browser-clang-staging/$x/llvm-code-coverage-$rev.tgz \

tools/clang/scripts/package.py

@@ -8,6 +8,7 @@
 
 import argparse
 import fnmatch
+import glob
 import itertools
 import os
 import shutil
@@ -383,6 +384,23 @@ def main():
             filter=PrintTarProgress)
   MaybeUpload(args, cfiverifydir, platform)
 
+  # Zip up the SafeStack runtime for Linux
+  safestackdir = 'safestack-' + stamp
+  shutil.rmtree(safestackdir, ignore_errors=True)
+  os.makedirs(os.path.join(safestackdir, 'lib'))
+  for build in glob.glob(os.path.join(LLVM_RELEASE_DIR, 'lib', 'clang', '*')):
+    version = os.path.basename(build)
+    dest_dir = os.path.join(safestackdir, 'lib', 'clang', version,
+                            'lib', 'linux')
+    os.makedirs(dest_dir)
+    for lib in glob.glob(os.path.join(build, 'lib', 'linux',
+                                      '*libclang_rt.safestack*')):
+      shutil.copy(lib, dest_dir)
+  with tarfile.open(safestackdir + '.tgz', 'w:gz') as tar:
+    tar.add(os.path.join(safestackdir, 'lib'), arcname='lib',
+            filter=PrintTarProgress)
+  MaybeUpload(args, safestackdir, platform)
+
   # On Mac, lld isn't part of the main zip.  Upload it in a separate zip.
   if sys.platform == 'darwin':
     llddir = 'lld-' + stamp