initgroups man page on 4.4BSD

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INITGROUPS(3)		 BSD Library Functions Manual		 INITGROUPS(3)

NAME
     initgroups — initialize group access list

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 routines, the
     group structure will be overwritten in the call to initgroups().

4.2 Berkeley Distribution	 June 4, 1993	     4.2 Berkeley Distribution
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