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| author | Chris St. Pierre <chris.a.st.pierre@gmail.com> | 2013-02-07 10:00:37 -0500 |
|---|---|---|
| committer | Chris St. Pierre <chris.a.st.pierre@gmail.com> | 2013-02-14 15:12:20 -0500 |
| commit | fd67a2735ada342251cb6baaa4e678532566e975 (patch) | |
| tree | 1f3f37ccacb853cf500243cd02d7a87b27022e14 /src/lib/Bcfg2/Utils.py | |
| parent | 9bec4d6bbab599bee72256c7e09fe214cb849a1b (diff) | |
| download | bcfg2-fd67a2735ada342251cb6baaa4e678532566e975.tar.gz bcfg2-fd67a2735ada342251cb6baaa4e678532566e975.tar.bz2 bcfg2-fd67a2735ada342251cb6baaa4e678532566e975.zip | |
moved common file locking code into Bcfg2.Utils
Diffstat (limited to 'src/lib/Bcfg2/Utils.py')
| -rw-r--r-- | src/lib/Bcfg2/Utils.py | 10 |
1 files changed, 10 insertions, 0 deletions
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 |