Mercurial > hg-stable
changeset 18678:423eee0b0b14
util: make ensuredirs safer against races
| author | Bryan O'Sullivan <bryano@fb.com> |
|---|---|
| date | Wed, 13 Feb 2013 12:20:10 -0800 |
| parents | 539210ed2069 |
| children | 15711d9d8b2c |
| files | mercurial/scmutil.py mercurial/util.py |
| diffstat | 2 files changed, 11 insertions(+), 8 deletions(-) [+] |
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--- a/mercurial/scmutil.py Wed Feb 13 11:07:01 2013 -0800 +++ b/mercurial/scmutil.py Wed Feb 13 12:20:10 2013 -0800 @@ -306,8 +306,7 @@ # to a directory. Let the posixfile() call below raise IOError. if basename: if atomictemp: - if not os.path.isdir(dirname): - util.ensuredirs(dirname, self.createmode) + util.ensuredirs(dirname, self.createmode) return util.atomictempfile(f, mode, self.createmode) try: if 'w' in mode: @@ -325,8 +324,7 @@ if e.errno != errno.ENOENT: raise nlink = 0 - if not os.path.isdir(dirname): - util.ensuredirs(dirname, self.createmode) + util.ensuredirs(dirname, self.createmode) if nlink > 0: if self._trustnlink is None: self._trustnlink = nlink > 1 or util.checknlink(f) @@ -345,9 +343,7 @@ except OSError: pass - dirname = os.path.dirname(linkname) - if not os.path.exists(dirname): - util.ensuredirs(dirname, self.createmode) + util.ensuredirs(os.path.dirname(linkname), self.createmode) if self._cansymlink: try:
--- a/mercurial/util.py Wed Feb 13 11:07:01 2013 -0800 +++ b/mercurial/util.py Wed Feb 13 12:20:10 2013 -0800 @@ -882,13 +882,20 @@ def ensuredirs(name, mode=None): """race-safe recursive directory creation""" + if os.path.isdir(name): + return + parent = os.path.dirname(os.path.abspath(name)) + if parent != name: + ensuredirs(parent, mode) try: - makedirs(name, mode) + os.mkdir(name) except OSError, err: if err.errno == errno.EEXIST and os.path.isdir(name): # someone else seems to have won a directory creation race return raise + if mode is not None: + os.chmod(name, mode) def readfile(path): fp = open(path, 'rb')