minix/lib/libc/sys/setgroups.2
Lionel Sambuc 84d9c625bf Synchronize on NetBSD-CVS (2013/12/1 12:00:00 UTC)
- Fix for possible unset uid/gid in toproto
 - Fix for default mtree style
 - Update libelf
 - Importing libexecinfo
 - Resynchronize GCC, mpc, gmp, mpfr
 - build.sh: Replace params with show-params.
     This has been done as the make target has been renamed in the same
     way, while a new target named params has been added. This new
     target generates a file containing all the parameters, instead of
     printing it on the console.
 - Update test48 with new etc/services (Fix by Ben Gras <ben@minix3.org)
     get getservbyport() out of the inner loop

Change-Id: Ie6ad5226fa2621ff9f0dee8782ea48f9443d2091
2014-07-28 17:05:06 +02:00

91 lines
2.8 KiB
Groff

.\" $NetBSD: setgroups.2,v 1.19 2013/07/14 14:29:09 njoly Exp $
.\"
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.\" @(#)setgroups.2 8.2 (Berkeley) 4/16/94
.\"
.Dd October 7, 2006
.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
.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
.Brq Dv NGROUPS_MAX .
.Pp
Only the super-user may set new groups.
.Pp
This system call affects only secondary groups.
.Sh RETURN VALUES
A 0 value is returned on success, \-1 on error, with
an error code stored in
.Va errno .
.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
.Brq Dv NGROUPS_MAX .
.It Bq Er EPERM
The caller is not the super-user.
.It Bq Er EFAULT
The address specified for
.Fa gidset
is outside the process
address space.
.El
.Sh SEE ALSO
.Xr getgroups 2 ,
.Xr setegid 2 ,
.Xr setgid 2 ,
.Xr setregid 2 ,
.Xr initgroups 3
.Sh HISTORY
The
.Fn setgroups
function call appeared in
.Bx 4.2 .