When there is a relative symlink in the layer, for example:
symA -> ../out/of/layer/file
symA will be invalid fater copied, it would be invalid from build time
if it points to a relative path, and would be invalid after extracted
the sdk if it points to a absolute py. Dereference symlink when copy
will fix the problem.
Use tar rather than shutil.copytree() to copy is because:
1) shutil.copytree(symlinks=Fasle) has bugs when dereference symlinks:
https://bugs.python.org/issue21697
And Ubunutu 1404 doesn't upgrade python3 to fix the problem.
2) shutil.copytree(symlinks=False) raises errors when there is a invalid
symlink, and tar just prints a warning, tar is preferred here since
the real world is unpredicatable
3) tar is faster than shutil.copytree() as said by oe.path.copytree()
So use tar to copy.
(From OE-Core rev:
f4d70bb0882eec4fb46cd942f2796fad57c72982)
Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
import shutil
def _smart_copy(src, dest):
+ import subprocess
# smart_copy will choose the correct function depending on whether the
# source is a file or a directory.
mode = os.stat(src).st_mode
if stat.S_ISDIR(mode):
- shutil.copytree(src, dest, symlinks=True, ignore=shutil.ignore_patterns('.git'))
+ bb.utils.mkdirhier(dest)
+ cmd = "tar --exclude='.git' --xattrs --xattrs-include='*' -chf - -C %s -p . \
+ | tar --xattrs --xattrs-include='*' -xf - -C %s" % (src, dest)
+ subprocess.check_output(cmd, shell=True, stderr=subprocess.STDOUT)
else:
shutil.copyfile(src, dest)
shutil.copymode(src, dest)
