6 * Copyright (C) 2007 by Latchesar Ionkov <lucho@ionkov.net>
7 * Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
8 * Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2
12 * as published by the Free Software Foundation.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to:
21 * Free Software Foundation
22 * 51 Franklin Street, Fifth Floor
23 * Boston, MA 02111-1301 USA
27 #include <linux/module.h>
28 #include <linux/moduleparam.h>
29 #include <net/9p/9p.h>
31 #include <linux/parser.h>
32 #include <net/9p/client.h>
33 #include <net/9p/transport.h>
34 #include <linux/list.h>
35 #include <linux/spinlock.h>
37 #ifdef CONFIG_NET_9P_DEBUG
38 unsigned int p9_debug_level = 0; /* feature-rific global debug level */
39 EXPORT_SYMBOL(p9_debug_level);
40 module_param_named(debug, p9_debug_level, uint, 0);
41 MODULE_PARM_DESC(debug, "9P debugging level");
45 * Dynamic Transport Registration Routines
49 static DEFINE_SPINLOCK(v9fs_trans_lock);
50 static LIST_HEAD(v9fs_trans_list);
53 * v9fs_register_trans - register a new transport with 9p
54 * @m: structure describing the transport module and entry points
57 void v9fs_register_trans(struct p9_trans_module *m)
59 spin_lock(&v9fs_trans_lock);
60 list_add_tail(&m->list, &v9fs_trans_list);
61 spin_unlock(&v9fs_trans_lock);
63 EXPORT_SYMBOL(v9fs_register_trans);
66 * v9fs_unregister_trans - unregister a 9p transport
67 * @m: the transport to remove
70 void v9fs_unregister_trans(struct p9_trans_module *m)
72 spin_lock(&v9fs_trans_lock);
73 list_del_init(&m->list);
74 spin_unlock(&v9fs_trans_lock);
76 EXPORT_SYMBOL(v9fs_unregister_trans);
79 * v9fs_get_trans_by_name - get transport with the matching name
80 * @name: string identifying transport
83 struct p9_trans_module *v9fs_get_trans_by_name(const substring_t *name)
85 struct p9_trans_module *t, *found = NULL;
87 spin_lock(&v9fs_trans_lock);
89 list_for_each_entry(t, &v9fs_trans_list, list)
90 if (strncmp(t->name, name->from, name->to-name->from) == 0 &&
91 try_module_get(t->owner)) {
96 spin_unlock(&v9fs_trans_lock);
99 EXPORT_SYMBOL(v9fs_get_trans_by_name);
102 * v9fs_get_default_trans - get the default transport
106 struct p9_trans_module *v9fs_get_default_trans(void)
108 struct p9_trans_module *t, *found = NULL;
110 spin_lock(&v9fs_trans_lock);
112 list_for_each_entry(t, &v9fs_trans_list, list)
113 if (t->def && try_module_get(t->owner)) {
119 list_for_each_entry(t, &v9fs_trans_list, list)
120 if (try_module_get(t->owner)) {
125 spin_unlock(&v9fs_trans_lock);
128 EXPORT_SYMBOL(v9fs_get_default_trans);
131 * v9fs_put_trans - put trans
132 * @m: transport to put
135 void v9fs_put_trans(struct p9_trans_module *m)
138 module_put(m->owner);
142 * v9fs_init - Initialize module
145 static int __init init_p9(void)
150 printk(KERN_INFO "Installing 9P2000 support\n");
157 * v9fs_init - shutdown module
161 static void __exit exit_p9(void)
163 printk(KERN_INFO "Unloading 9P2000 support\n");
171 MODULE_AUTHOR("Latchesar Ionkov <lucho@ionkov.net>");
172 MODULE_AUTHOR("Eric Van Hensbergen <ericvh@gmail.com>");
173 MODULE_AUTHOR("Ron Minnich <rminnich@lanl.gov>");
174 MODULE_LICENSE("GPL");