1.\" Copyright (c) 1983, 1991 Regents of the University of California. 2.\" All rights reserved. 3.\" 4.\" %sccs.include.redist.man% 5.\" 6.\" @(#)initgroups.3 6.4 (Berkeley) 11/12/91 7.\" 8.Dd 9.Dt INITGROUPS 3 10.Os BSD 4.2 11.Sh NAME 12.Nm initgroups 13.Nd initialize group access list 14.Sh SYNOPSIS 15.Fd #include <unistd.h> 16.Ft int 17.Fn initgroups "const char *name" "int basegid" 18.Sh DESCRIPTION 19The 20.Fn initgroups 21function 22uses the 23.Xr getgrouplist 3 24function to calculate the group access list for the user 25specified in 26.Fa name . 27This group list is then setup for the current process using 28.Xr setgroups 2 . 29The 30.Fa basegid 31is automatically included in the groups list. 32Typically this value is given as 33the group number from the password file. 34.Sh RETURN VALUES 35The 36.Fn initgroups 37function 38returns \-1 if it was not invoked by the super-user. 39.Sh SEE ALSO 40.Xr setgroups 2 , 41.Xr getgrouplist 3 42.Sh HISTORY 43The 44.Nm 45function appeared in 46.Bx 4.2 . 47.Sh BUGS 48The 49.Fn getgrouplist 50function called by 51.Nm 52uses the routines based on 53.Xr getgrent 3 . 54If the invoking program uses any of these routines, 55the group structure will 56be overwritten in the call to 57.Fn initgroups . 58