1 /* AFS client file system
3 * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
12 #include <linux/module.h>
13 #include <linux/moduleparam.h>
14 #include <linux/init.h>
15 #include <linux/completion.h>
18 MODULE_DESCRIPTION("AFS Client File System");
19 MODULE_AUTHOR("Red Hat, Inc.");
20 MODULE_LICENSE("GPL");
23 module_param_named(debug, afs_debug, uint, S_IWUSR | S_IRUGO);
24 MODULE_PARM_DESC(afs_debug, "AFS debugging mask");
26 static char *rootcell;
28 module_param(rootcell, charp, 0);
29 MODULE_PARM_DESC(rootcell, "root AFS cell name and VL server IP addr list");
31 #ifdef AFS_CACHING_SUPPORT
32 static struct cachefs_netfs_operations afs_cache_ops = {
33 .get_page_cookie = afs_cache_get_page_cookie,
36 struct cachefs_netfs afs_cache_netfs = {
39 .ops = &afs_cache_ops,
43 struct afs_uuid afs_uuid;
48 static int __init afs_get_client_UUID(void)
55 /* read the MAC address of one of the external interfaces and construct
57 ret = afs_get_MAC_address(afs_uuid.node, sizeof(afs_uuid.node));
62 uuidtime = (u64) ts.tv_sec * 1000 * 1000 * 10;
63 uuidtime += ts.tv_nsec / 100;
64 uuidtime += AFS_UUID_TO_UNIX_TIME;
65 afs_uuid.time_low = uuidtime;
66 afs_uuid.time_mid = uuidtime >> 32;
67 afs_uuid.time_hi_and_version = (uuidtime >> 48) & AFS_UUID_TIMEHI_MASK;
68 afs_uuid.time_hi_and_version = AFS_UUID_VERSION_TIME;
70 get_random_bytes(&clockseq, 2);
71 afs_uuid.clock_seq_low = clockseq;
72 afs_uuid.clock_seq_hi_and_reserved =
73 (clockseq >> 8) & AFS_UUID_CLOCKHI_MASK;
74 afs_uuid.clock_seq_hi_and_reserved = AFS_UUID_VARIANT_STD;
76 _debug("AFS UUID: %08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
79 afs_uuid.time_hi_and_version,
80 afs_uuid.clock_seq_hi_and_reserved,
81 afs_uuid.clock_seq_low,
82 afs_uuid.node[0], afs_uuid.node[1], afs_uuid.node[2],
83 afs_uuid.node[3], afs_uuid.node[4], afs_uuid.node[5]);
89 * initialise the AFS client FS module
91 static int __init afs_init(void)
95 printk(KERN_INFO "kAFS: Red Hat AFS client v0.1 registering.\n");
97 ret = afs_get_client_UUID();
101 /* register the /proc stuff */
102 ret = afs_proc_init();
106 #ifdef AFS_CACHING_SUPPORT
107 /* we want to be able to cache */
108 ret = cachefs_register_netfs(&afs_cache_netfs,
109 &afs_cache_cell_index_def);
114 /* initialise the cell DB */
115 ret = afs_cell_init(rootcell);
117 goto error_cell_init;
119 /* initialise the VL update process */
120 ret = afs_vlocation_update_init();
122 goto error_vl_update_init;
124 /* initialise the callback update process */
125 ret = afs_callback_update_init();
127 /* create the RxRPC transport */
128 ret = afs_open_socket();
130 goto error_open_socket;
132 /* register the filesystems */
142 error_vl_update_init:
144 #ifdef AFS_CACHING_SUPPORT
145 cachefs_unregister_netfs(&afs_cache_netfs);
148 afs_callback_update_kill();
149 afs_vlocation_purge();
152 printk(KERN_ERR "kAFS: failed to register: %d\n", ret);
156 /* XXX late_initcall is kludgy, but the only alternative seems to create
157 * a transport upon the first mount, which is worse. Or is it?
159 late_initcall(afs_init); /* must be called after net/ to create socket */
162 * clean up on module removal
164 static void __exit afs_exit(void)
166 printk(KERN_INFO "kAFS: Red Hat AFS client v0.1 unregistering.\n");
171 afs_callback_update_kill();
172 afs_vlocation_purge();
173 flush_scheduled_work();
175 #ifdef AFS_CACHING_SUPPORT
176 cachefs_unregister_netfs(&afs_cache_netfs);
181 module_exit(afs_exit);