initgroups(3) BSD Library Functions Manual initgroups(3)
NAME
initgroups -- initialize group access list
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <unistd.h>
int
initgroups(const char *name, int basegid);
DESCRIPTION
The initgroups() function uses the getgrouplist(3) function to calculate
the group access list for the user specified in name. This group list is
then setup for the current process using setgroups(2). The basegid is
automatically included in the groups list. Typically this value is given
as the group number from the password file.
RETURN VALUES
The initgroups() function returns -1 if it was not invoked by the super-
user.
SEE ALSO
setgroups(2), getgrouplist(3)
HISTORY
The initgroups() function appeared in 4.2BSD.
BUGS
The getgrouplist() function called by initgroups() uses the routines
based on getgrent(3). If the invoking program uses any of these rou-
tines, the group structure will be overwritten in the call to
initgroups().
BSD June 4, 1993 BSD
Mac OS X 10.6 - Generated Thu Sep 17 20:20:55 CDT 2009