From f7afb09ef15d388a9ad90ffaed1a7b9699f30c7a Mon Sep 17 00:00:00 2001 From: Miles Bader Date: Sun, 9 Apr 1995 04:38:32 +0000 Subject: Initial revision --- libtrivfs/startup.c | 62 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 libtrivfs/startup.c (limited to 'libtrivfs') diff --git a/libtrivfs/startup.c b/libtrivfs/startup.c new file mode 100644 index 00000000..31312f9f --- /dev/null +++ b/libtrivfs/startup.c @@ -0,0 +1,62 @@ +/* Contact parent filesystem and establish ourselves as the translator. + + Copyright (C) 1995 Free Software Foundation, Inc. + + Written by Miles Bader + + 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 +#include +#include + +#include "priv.h" + +/* Creates a control port for this filesystem and sends it to BOOTSTRAP with + fsys_startup. CONTROL_TYPE is the ports library type for the control + port, and PROTID_TYPE is the type for ports representing opens of this + node. If CONTROL isn't NULL, the trivfs control port is return in it. If + any error occurs sending fsys_startup, it is returned, otherwise 0. */ +error_t +trivfs_startup(mach_port_t bootstrap, + int control_type, int protid_type, + struct trivfs_control **control) +{ + error_t err; + mach_port_t realnode; + struct trivfs_control *tcntl; + mach_port_t mcntl = + trivfs_handle_port (MACH_PORT_NULL, control_type, protid_type); + + assert(mcntl != MACH_PORT_NULL); + + /* Contact whoever started us. */ + err = fsys_startup (bootstrap, mcntl, MACH_MSG_TYPE_MAKE_SEND, &realnode); + + /* Install the returned realnode for trivfs's use */ + tcntl = ports_check_port_type (mcntl, control_type); + assert (tcntl); + + ports_change_hardsoft (tcntl, 1); + if (!err) + tcntl->underlying = realnode; + + ports_done_with_port (tcntl); + + if (control) + *control = tcntl; + + return err; +} -- cgit v1.2.3