/* * net/9p/9p.c * * 9P entry point * * Copyright (C) 2007 by Latchesar Ionkov <lucho@ionkov.net> * Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com> * Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 * as published by the Free Software Foundation. * * 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: * Free Software Foundation * 51 Franklin Street, Fifth Floor * Boston, MA 02111-1301 USA * */ #include <linux/module.h> #include <linux/moduleparam.h> #include <net/9p/9p.h> #include <linux/fs.h> #include <linux/parser.h> #include <net/9p/transport.h> #include <linux/list.h> #ifdef CONFIG_NET_9P_DEBUG unsigned int p9_debug_level = 0; /* feature-rific global debug level */ EXPORT_SYMBOL(p9_debug_level); module_param_named(debug, p9_debug_level, uint, 0); MODULE_PARM_DESC(debug, "9P debugging level"); #endif extern int p9_mux_global_init(void); extern void p9_mux_global_exit(void); /* * Dynamic Transport Registration Routines * */ static LIST_HEAD(v9fs_trans_list); static struct p9_trans_module *v9fs_default_transport; /** * v9fs_register_trans - register a new transport with 9p * @m - structure describing the transport module and entry points * */ void v9fs_register_trans(struct p9_trans_module *m) { list_add_tail(&m->list, &v9fs_trans_list); if (m->def) v9fs_default_transport = m; } EXPORT_SYMBOL(v9fs_register_trans); /** * v9fs_match_trans - match transport versus registered transports * @arg: string identifying transport * */ struct p9_trans_module *v9fs_match_trans(const substring_t *name) { struct list_head *p; struct p9_trans_module *t = NULL; list_for_each(p, &v9fs_trans_list) { t = list_entry(p, struct p9_trans_module, list); if (strncmp(t->name, name->from, name->to-name->from) == 0) return t; } return NULL; } EXPORT_SYMBOL(v9fs_match_trans); /** * v9fs_default_trans - returns pointer to default transport * */ struct p9_trans_module *v9fs_default_trans(void) { if (v9fs_default_transport) return v9fs_default_transport; else if (!list_empty(&v9fs_trans_list)) return list_first_entry(&v9fs_trans_list, struct p9_trans_module, list); else return NULL; } EXPORT_SYMBOL(v9fs_default_trans); /** * v9fs_init - Initialize module * */ static int __init init_p9(void) { int ret; p9_error_init(); printk(KERN_INFO "Installing 9P2000 support\n"); ret = p9_mux_global_init(); if (ret) { printk(KERN_WARNING "9p: starting mux failed\n"); return ret; } return ret; } /** * v9fs_init - shutdown module * */ static void __exit exit_p9(void) { p9_mux_global_exit(); } module_init(init_p9) module_exit(exit_p9) MODULE_AUTHOR("Latchesar Ionkov <lucho@ionkov.net>"); MODULE_AUTHOR("Eric Van Hensbergen <ericvh@gmail.com>"); MODULE_AUTHOR("Ron Minnich <rminnich@lanl.gov>"); MODULE_LICENSE("GPL");