diff options
| -rw-r--r-- | libnetfs/io-identity.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/libnetfs/io-identity.c b/libnetfs/io-identity.c new file mode 100644 index 00000000..7e61984e --- /dev/null +++ b/libnetfs/io-identity.c @@ -0,0 +1,60 @@ +/* libnetfs 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 "netfs.h" +#include "io_S.h" + +error_t +netfs_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 = netfs_fsys_identity; + *fsystype = MACH_MSG_TYPE_MAKE_SEND; + *fileno = np->dn_stat.st_ino; + + mutex_unlock (&np->lock); + return 0; +} |