On Tue, Jun 22, 2010 at 12:39 PM, Ronald Oussoren
<[email protected]> wrote:
..
> Both are valid fixes, both have both advantages and disadvantages.
>
> Your proposal:
> * Reverts to the behavior in 2.6
> * Ensures that posix.getgroups and posix.setgroups are internally consistent
>
It is also very simple and since posix module worked fine on OSX for
years without _DARWIN_C_SOURCE, I think this is a very low risk
change.
> My proposal:
> * Uses the newer ABI, which is more likely to be the one Apple wants you to
> use
I don't think so. In getgroups(2) I see
LEGACY DESCRIPTION
If _DARWIN_C_SOURCE is defined, getgroups() can return more than
{NGROUPS_MAX} groups.
This suggests that this is legacy behavior. Newer applications should
use getgrouplist instead.
> * Is compatible with system tools (that is, posix.getgroups() agrees with
> id(1))
I have not tested this recently, but I think if you exec id from a
program after a call to setgroups(), it will return process groups,
not user groups.
> * Is compatible with /usr/bin/python
I am sure that one this issue is fixed upstream, Apple will pick it up
with the next version.
> * results in posix.getgroups not reflecting results of posix.setgroups
>
This effectively substitutes getgrouplist called on the current user
for getgroups. In 3.x, I believe the correct action will be to
provide direct access to getgrouplist which is while not POSIX (yet?),
is widely available.
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