[OE-core] [PATCH v2 1/2] oe.path: Add copyhardlink() helper function
paul at betafive.co.uk
paul at betafive.co.uk
Fri May 3 11:54:47 UTC 2019
From: Paul Barker <paul at betafive.co.uk>
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.
Signed-off-by: Paul Barker <paul at betafive.co.uk>
---
meta/lib/oe/path.py | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
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
--
2.17.1
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