From d0115ef6335480777c54c34b9070306ee9d4e8e2 Mon Sep 17 00:00:00 2001 From: "Michael I. Bushnell" Date: Fri, 18 Feb 1994 19:27:27 +0000 Subject: Initial revision --- libtrivfs/io-reauthenticate.c | 71 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 libtrivfs/io-reauthenticate.c (limited to 'libtrivfs') diff --git a/libtrivfs/io-reauthenticate.c b/libtrivfs/io-reauthenticate.c new file mode 100644 index 00000000..82ab77bc --- /dev/null +++ b/libtrivfs/io-reauthenticate.c @@ -0,0 +1,71 @@ +/* + Copyright (C) 1993, 1994 Free Software Foundation + +This file is part of the GNU Hurd. + +The GNU Hurd 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. + +The GNU Hurd 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 the GNU Hurd; see the file COPYING. If not, write to +the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ + +/* Written by Michael I. Bushnell. */ + +error_t +trivfs_S_io_reauthenticate (struct protid *cred, + int rendint) +{ + struct protid *newcred; + uid_t *gen_uids = alloca (sizeof (uid_t) * 20); + uid_t *gen_gids = alloca (sizeof (uid_t) * 20); + uid_t *aux_uids = alloca (sizeof (uid_t) * 20); + uid_t *aux_gids = alloca (sizeof (uid_t) * 20); + u_int genuidlen, gengidlen, auxuidlen, auxgidlen; + uid_t *gubuf, *ggbuf, *aubuf, *agbuf; + error_t err; + + if (cred == 0) + return EOPNOTSUPP; + + genuidlen = gengidlen = auxuidlen = auxgidlen = 20; + gubuf = gen_uids; ggbuf = gen_gids; + aubuf = aux_uids; agbuf = aux_gids; + + mutex_lock (&cred->po->np->lock); + newcred = diskfs_start_protid (cred->po); + err = auth_server_authenticate (diskfs_auth_server_port, + ports_get_right (cred), + MACH_MSG_TYPE_MAKE_SEND, + rend_int, + ports_get_right (newcred), + MACH_MSG_TYPE_MAKE_SEND, + &gen_uids, &genuidlen, + &aux_uids, &auxuidlen, + &gen_gids, &gengidlen, + &aux_gids, &auxgidlen); + assert (!err); /* XXX */ + + diskfs_finish_protid (newcred, gen_uids, genuidlen, gen_gids, gengidlen); + + if (gubuf != gen_uids) + vm_deallocate (mach_task_self (), (u_int) gen_uids, + genuidlen * sizeof (uid_t)); + if (ggbuf != gen_gids) + vm_deallocate (mach_task_self (), (u_int) gen_gids, + gengidlen * sizeof (uid_t)); + if (aubuf != aux_uids) + vm_deallocate (mach_task_self (), (u_int) aux_uids, + auxuidlen * sizeof (uid_t)); + if (agbuf != aux_gids) + vm_deallocate (mach_task_self (), (u_int) aux_gids, + auxgidlen * sizeof (uid_t)); + + return 0; -- cgit v1.2.3