return rel
-class Error(EnvironmentError):
+class CopyFailed(Exception):
pass
-# Based on shutil.copytree but with features removed and
-# No fatal error is dst already exists
-# Handle symlinks that already exist
def copytree(src, dst):
- names = os.listdir(src)
+ # We could use something like shutil.copytree here but it turns out to
+ # to be slow. It takes twice as long copying to an empty directory.
+ # If dst already has contents performance can be 15 time slower
+ # This way we also preserve hardlinks between files in the tree.
- bb.mkdirhier(dst)
+ import subprocess
- errors = []
- for name in names:
- srcname = os.path.join(src, name)
- dstname = os.path.join(dst, name)
- try:
- if os.path.islink(srcname):
- linkto = os.readlink(srcname)
- if os.path.lexists(dstname):
- os.unlink(dstname)
- os.symlink(linkto, dstname)
- elif os.path.isdir(srcname):
- copytree(srcname, dstname)
- else:
- bb.utils.copyfile(srcname, dstname)
- except (IOError, os.error), why:
- errors.append((srcname, dstname, str(why)))
- # catch the Error from the recursive copytree so that we can
- # continue with other files
- except Error, err:
- errors.extend(err.args[0])
- try:
- shutil.copystat(src, dst)
- except OSError, why:
- errors.extend((src, dst, str(why)))
- if errors:
- raise Error, errors
+ bb.mkdirhier(dst)
+ cmd = 'tar -cf - -C %s -ps . | tar -xf - -C %s' % (src, dst)
+ ret = subprocess.call(cmd, shell=True)
+ if ret != 0:
+ raise CopyFailed("Command %s failed with return value %s" % (cmd, ret))
+ return
def remove(path):
"""Equivalent to rm -f or rm -rf"""
