From 10a14af4ca1f93538ed03eaf0bf17078312280f4 Mon Sep 17 00:00:00 2001 From: Paul Barker Date: Fri, 3 May 2019 11:54:47 +0000 Subject: oe.path: Add copyhardlink() helper function This function creates hard links if possible, falling back to copying the file if the destination is on a different volume to the source. The docstring for copyhardlinktree() is also updated to make the difference between the two functions a little clearer. (From OE-Core rev: 5437efa16f9bec914e417c6c939a39c247084f52) Signed-off-by: Paul Barker Signed-off-by: Ross Burton Signed-off-by: Richard Purdie --- meta/lib/oe/path.py | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) (limited to 'meta') diff --git a/meta/lib/oe/path.py b/meta/lib/oe/path.py index 1e24d0586b..c09eda5c42 100644 --- a/meta/lib/oe/path.py +++ b/meta/lib/oe/path.py @@ -90,7 +90,7 @@ def copytree(src, dst): subprocess.check_output(cmd, shell=True, stderr=subprocess.STDOUT) def copyhardlinktree(src, dst): - """ Make the hard link when possible, otherwise copy. """ + """Make a tree of hard links when possible, otherwise copy.""" bb.utils.mkdirhier(dst) if os.path.isdir(src) and not len(os.listdir(src)): return @@ -114,6 +114,17 @@ def copyhardlinktree(src, dst): else: copytree(src, dst) +def copyhardlink(src, dst): + """Make a hard link when possible, otherwise copy.""" + + # We need to stat the destination directory as the destination file probably + # doesn't exist yet. + dstdir = os.path.dirname(dst) + if os.stat(src).st_dev == os.stat(dstdir).st_dev: + os.link(src, dst) + else: + shutil.copy(src, dst) + def remove(path, recurse=True): """ Equivalent to rm -f or rm -rf -- cgit v1.2.3-54-g00ecf