On 04/12/2015 18:13, Tristan Schmelcher wrote: > File permissions are checked at time of open, so I think this fchmod > call has never had any effect.
Indeed, mmap doesn't require the file to be executable, only readable and writable. The fchmod seems to be a guarantee for this permissions but I don't see why a file newly created could not be writable. > > If there is a concern that the mkstemp implementation may be insecure, > why not set and restore the umask? > I will add this safeguard. Mickaël
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