getgroups() SUSv2 compliance

[Egor Duda]

Hi!

  SUSv2 states that:

==========================================================================
The getgroups() function will fail if:

[EINVAL]
        The gidsetsize argument is non-zero and is less than the number of
        supplementary group IDs. 
==========================================================================

patch attached to accomplish this.

Egor.            mailto:deo@logos-m.ru ICQ 5165414 FidoNet 2:5020/496.19
getgroups-error-patch.ChangeLog
getgroups-error-patch.diff

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2000-08-29  Egor Duda  <deo@logos-m.ru>

	* grp.cc (getgroups): fail with EINVAL if array is not large
	enough to hold all supplementary group IDs.
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