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A process normally has only the credentials of the primary group. It can gain acess to the credentials of the secondary groups the EUID is part of by calling initgroups(3). However, initgroups(3) is a relatively expensive operation, since it needs to enumerate all groups. For this reason, processes only call initgroups(3) if they have a specific reason to do it.

lcd047
– lcd047

2015-05-29 15:55:04 +00:00
Commented May 29, 2015 at 15:55

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