From fbdb58363aae50984d8670f4ef3f68ddc96b32e9 Mon Sep 17 00:00:00 2001 From: "Michael I. Bushnell" Date: Fri, 10 May 1996 21:21:19 +0000 Subject: Initial revision --- libdiskfs/io-identity.c | 61 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 61 insertions(+) create mode 100644 libdiskfs/io-identity.c (limited to 'libdiskfs/io-identity.c') diff --git a/libdiskfs/io-identity.c b/libdiskfs/io-identity.c new file mode 100644 index 00000000..6bc6f86c --- /dev/null +++ b/libdiskfs/io-identity.c @@ -0,0 +1,61 @@ +/* libdiskfs implementation of io_identity RPC + Copyright (C) 1996 Free Software Foundation, Inc. + Written by Michael I. Bushnell, p/BSG. + + 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 this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA. */ + +#include "priv.h" +#include "io_S.h" + +/* Implement io_identity as described in . */ +error_t +diskfs_S_io_identity (struct protid *cred, + mach_port_t *id, + mach_msg_type_name_t *idtype, + mach_port_t *fsys, + mach_msg_type_name_t *fsystype, + int *fileno) +{ + struct node *np; + error_t err; + + if (!cred) + return EOPNOTSUPP; + + np = cred->po->np; + mutex_lock (&np->lock); + + if (np->identity == MACH_PORT_NULL) + { + err = mach_port_allocate (mach_task_self (), MACH_PORT_RIGHT_RECEIVE, + &np->identity); + if (err) + { + mutex_unlock (&np->lock); + return err; + } + } + + *id = np->identity; + *idtype = MACH_MSG_TYPE_MAKE_SEND; + *fsys = diskfs_fsys_identity; + *fsystype = MACH_MSG_TYPE_MAKE_SEND; + *fileno = np->dn_stat.st_ino; + + mutex_unlock (&np->lock); + return 0; +} -- cgit v1.2.3