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/*
Copyright (C) 1994, 1995, 1996 Free Software Foundation
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2, or (at
your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "priv.h"
#include <string.h>
/* Build and return in CRED a protid which has no user identification, for
peropen PO. The node PO->np must be locked. */
error_t
diskfs_start_protid (struct peropen *po, struct protid **cred)
{
error_t err =
ports_create_port (diskfs_protid_class, diskfs_port_bucket,
sizeof (struct protid), cred);
if (! err)
{
po->refcnt++;
(*cred)->po = po;
(*cred)->shared_object = MACH_PORT_NULL;
(*cred)->mapped = 0;
}
return err;
}
/* Finish building protid CRED started with diskfs_start_protid;
the uid set is UID (length NUIDS); the gid set is GID (length NGIDS). */
void
diskfs_finish_protid (struct protid *cred, uid_t *uids, int nuids,
gid_t *gids, int ngids)
{
if (!uids)
nuids = 1;
if (!gids)
ngids = 1;
cred->uids = malloc (nuids * sizeof (uid_t));
cred->gids = malloc (ngids * sizeof (uid_t));
cred->nuids = nuids;
cred->ngids = ngids;
if (uids)
bcopy (uids, cred->uids, nuids * sizeof (uid_t));
else
*cred->uids = 0;
if (gids)
bcopy (gids, cred->gids, ngids * sizeof (uid_t));
else
*cred->gids = 0;
}
/* Create and return a protid for an existing peropen PO in CRED. The uid
set is UID (length NUIDS); the gid set is GID (length NGIDS). The node
PO->np must be locked. */
error_t
diskfs_create_protid (struct peropen *po, uid_t *uids, int nuids,
uid_t *gids, int ngids, struct protid **cred)
{
error_t err = diskfs_start_protid (po, cred);
if (! err)
diskfs_finish_protid (*cred, uids, nuids, gids, ngids);
return err;
}
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