freebsd-dev/lib/libc/sys/setgroups.2
Diomidis Spinellis 988d4dc315 Documented missing EINVAL errno value
kern_prot.c:
if (ngrp > NGROUPS)
	return (EINVAL);

MFC after:	2 weeks
2003-11-19 13:05:50 +00:00

94 lines
2.9 KiB
Groff

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.\" @(#)setgroups.2 8.2 (Berkeley) 4/16/94
.\" $FreeBSD$
.\"
.Dd April 16, 1994
.Dt SETGROUPS 2
.Os
.Sh NAME
.Nm setgroups
.Nd set group access list
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In sys/param.h
.In unistd.h
.Ft int
.Fn setgroups "int ngroups" "const gid_t *gidset"
.Sh DESCRIPTION
The
.Fn setgroups
system call
sets the group access list of the current user process
according to the array
.Fa gidset .
The
.Fa ngroups
argument
indicates the number of entries in the array and must be no
more than
.Dv NGROUPS ,
as defined in
.In sys/param.h .
.Pp
Only the super-user may set new groups.
.Sh RETURN VALUES
.Rv -std setgroups
.Sh ERRORS
The
.Fn setgroups
system call will fail if:
.Bl -tag -width Er
.It Bq Er EPERM
The caller is not the super-user.
.It Bq Er EINVAL
The number specified in the
.Fa ngroups
argument is larger than the
.Dv NGROUPS
limit.
.It Bq Er EFAULT
The address specified for
.Fa gidset
is outside the process
address space.
.El
.Sh SEE ALSO
.Xr getgroups 2 ,
.Xr initgroups 3
.Sh HISTORY
The
.Fn setgroups
system call appeared in
.Bx 4.2 .