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-rw-r--r--lib/bb/utils.py17
1 files changed, 17 insertions, 0 deletions
diff --git a/lib/bb/utils.py b/lib/bb/utils.py
index b20cdab..56894f1 100644
--- a/lib/bb/utils.py
+++ b/lib/bb/utils.py
@@ -906,6 +906,23 @@ def copyfile(src, dest, newmtime = None, sstat = None):
newmtime = sstat[stat.ST_MTIME]
return newmtime
+def break_hardlinks(src, sstat = None):
+ """
+ Ensures src is the only hardlink to this file. Other hardlinks,
+ if any, are not affected (other than in their st_nlink value, of
+ course). Returns true on success and false on failure.
+
+ """
+ try:
+ if not sstat:
+ sstat = os.lstat(src)
+ except Exception as e:
+ logger.warning("break_hardlinks: stat of %s failed (%s)" % (src, e))
+ return False
+ if sstat[stat.ST_NLINK] == 1:
+ return True
+ return copyfile(src, src, sstat=sstat)
+
def which(path, item, direction = 0, history = False, executable=False):
"""
Locate `item` in the list of paths `path` (colon separated string like $PATH).