[issue7900] posix.getgroups() failure on Mac OS X

[Alexander Belopolsky]

Alexander Belopolsky <belopolsky at users.sourceforge.net> added the comment:

Ronald> How did you detect that the modern getgroups implementation
Ronald> doesn't query the kernel? That would be very odd.

I have just found the source code for getgroups:

http://www.opensource.apple.com/source/Libc/Libc-594.1.4/sys/getgroups.c

As I suspected, it simply calls getgrouplist with the current user name.

>From getgrouplist(3) manpage:

"""
The getgrouplist() function reads through the group file and calculates the group access list for the user specified in name. 
"""

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