lib/libc/sys/setgroups.2 - master - nerfur/openbsd-src

lib/libc/sys/setgroups.2
85 строк3 KB
anton
Get rid of an old convention of wrapping preprocessor constants in curly
08 июл 2019, 21:48
08 июл 2019, 21:48eda2ee1
.\"	$OpenBSD: setgroups.2,v 1.14 2019/07/08 18:48:30 anton Exp $
.\"	$NetBSD: setgroups.2,v 1.7 1995/02/27 12:36:49 cgd Exp $
.\"
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.\"     @(#)setgroups.2	8.2 (Berkeley) 4/16/94
.\"
.Dd $Mdocdate: July 8 2019 $
.Dt SETGROUPS 2
.Os
.Sh NAME
.Nm setgroups
.Nd set group access list
.Sh SYNOPSIS
.In sys/types.h
.In unistd.h
.Ft int
.Fn setgroups "int ngroups" "const gid_t *gidset"
.Sh DESCRIPTION
.Fn setgroups
sets the group access list of the current user process
according to the array
.Fa gidset .
The parameter
.Fa ngroups
indicates the number of entries in the array and must be no
more than
.Dv NGROUPS_MAX .
.Pp
Only the superuser may set new groups.
.Sh RETURN VALUES
.Rv -std
.Sh ERRORS
The
.Fn setgroups
call will fail if:
.Bl -tag -width Er
.It Bq Er EINVAL
The value of
.Fa ngroups
is greater than
.Dv NGROUPS_MAX .
.It Bq Er EPERM
The caller is not the superuser.
.It Bq Er EFAULT
The address specified for
.Fa gidset
is outside the process
address space.
.El
.Sh SEE ALSO
.Xr getgroups 2 ,
.Xr setgid 2 ,
.Xr setregid 2 ,
.Xr initgroups 3
.Sh HISTORY
The
.Fn setgroups
system call first appeared in
.Bx 4.1c .