1 /* AFS client file system
3 * Copyright (C) 2002,5 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>
16 #include <linux/sched.h>
17 #include <linux/random.h>
20 MODULE_DESCRIPTION("AFS Client File System");
21 MODULE_AUTHOR("Red Hat, Inc.");
22 MODULE_LICENSE("GPL");
25 module_param_named(debug, afs_debug, uint, S_IWUSR | S_IRUGO);
26 MODULE_PARM_DESC(debug, "AFS debugging mask");
28 static char *rootcell;
30 module_param(rootcell, charp, 0);
31 MODULE_PARM_DESC(rootcell, "root AFS cell name and VL server IP addr list");
33 struct afs_uuid afs_uuid;
34 struct workqueue_struct *afs_wq;
39 static int __init afs_get_client_UUID(void)
46 /* read the MAC address of one of the external interfaces and construct
48 ret = afs_get_MAC_address(afs_uuid.node, sizeof(afs_uuid.node));
53 uuidtime = (u64) ts.tv_sec * 1000 * 1000 * 10;
54 uuidtime += ts.tv_nsec / 100;
55 uuidtime += AFS_UUID_TO_UNIX_TIME;
56 afs_uuid.time_low = uuidtime;
57 afs_uuid.time_mid = uuidtime >> 32;
58 afs_uuid.time_hi_and_version = (uuidtime >> 48) & AFS_UUID_TIMEHI_MASK;
59 afs_uuid.time_hi_and_version |= AFS_UUID_VERSION_TIME;
61 get_random_bytes(&clockseq, 2);
62 afs_uuid.clock_seq_low = clockseq;
63 afs_uuid.clock_seq_hi_and_reserved =
64 (clockseq >> 8) & AFS_UUID_CLOCKHI_MASK;
65 afs_uuid.clock_seq_hi_and_reserved |= AFS_UUID_VARIANT_STD;
67 _debug("AFS UUID: %08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
70 afs_uuid.time_hi_and_version,
71 afs_uuid.clock_seq_hi_and_reserved,
72 afs_uuid.clock_seq_low,
73 afs_uuid.node[0], afs_uuid.node[1], afs_uuid.node[2],
74 afs_uuid.node[3], afs_uuid.node[4], afs_uuid.node[5]);
80 * initialise the AFS client FS module
82 static int __init afs_init(void)
86 printk(KERN_INFO "kAFS: Red Hat AFS client v0.1 registering.\n");
88 ret = afs_get_client_UUID();
92 /* create workqueue */
94 afs_wq = alloc_workqueue("afs", 0, 0);
98 /* register the /proc stuff */
99 ret = afs_proc_init();
103 #ifdef CONFIG_AFS_FSCACHE
104 /* we want to be able to cache */
105 ret = fscache_register_netfs(&afs_cache_netfs);
110 /* initialise the cell DB */
111 ret = afs_cell_init(rootcell);
113 goto error_cell_init;
115 /* initialise the VL update process */
116 ret = afs_vlocation_update_init();
118 goto error_vl_update_init;
120 /* initialise the callback update process */
121 ret = afs_callback_update_init();
123 goto error_callback_update_init;
125 /* create the RxRPC transport */
126 ret = afs_open_socket();
128 goto error_open_socket;
130 /* register the filesystems */
140 afs_callback_update_kill();
141 error_callback_update_init:
142 afs_vlocation_purge();
143 error_vl_update_init:
146 #ifdef CONFIG_AFS_FSCACHE
147 fscache_unregister_netfs(&afs_cache_netfs);
152 destroy_workqueue(afs_wq);
154 printk(KERN_ERR "kAFS: failed to register: %d\n", ret);
158 /* XXX late_initcall is kludgy, but the only alternative seems to create
159 * a transport upon the first mount, which is worse. Or is it?
161 late_initcall(afs_init); /* must be called after net/ to create socket */
164 * clean up on module removal
166 static void __exit afs_exit(void)
168 printk(KERN_INFO "kAFS: Red Hat AFS client v0.1 unregistering.\n");
171 afs_kill_lock_manager();
174 afs_callback_update_kill();
175 afs_vlocation_purge();
176 destroy_workqueue(afs_wq);
178 #ifdef CONFIG_AFS_FSCACHE
179 fscache_unregister_netfs(&afs_cache_netfs);
185 module_exit(afs_exit);