From ff0048a3a26c9076c8052a8c7be171e4364f0d09 Mon Sep 17 00:00:00 2001 From: "Chris St. Pierre" Date: Thu, 7 Feb 2013 10:00:37 -0500 Subject: moved common file locking code into Bcfg2.Utils --- src/lib/Bcfg2/Utils.py | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'src/lib/Bcfg2/Utils.py') diff --git a/src/lib/Bcfg2/Utils.py b/src/lib/Bcfg2/Utils.py index ba17e1a63..247e4f16b 100644 --- a/src/lib/Bcfg2/Utils.py +++ b/src/lib/Bcfg2/Utils.py @@ -2,6 +2,7 @@ used by both client and server. Stuff that doesn't fit anywhere else. """ +import fcntl from Bcfg2.Compat import any # pylint: disable=W0622 @@ -65,3 +66,12 @@ class PackedDigitRange(object): def __len__(self): return sum(r[1] - r[0] + 1 for r in self.ranges) + len(self.ints) + + +def locked(fd): + """ Acquire a lock on a file """ + try: + fcntl.lockf(fd, fcntl.LOCK_EX | fcntl.LOCK_NB) + except IOError: + return True + return False -- cgit v1.2.3-1-g7c22