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>
19 MODULE_DESCRIPTION("AFS Client File System");
20 MODULE_AUTHOR("Red Hat, Inc.");
21 MODULE_LICENSE("GPL");
24 module_param_named(debug, afs_debug, uint, S_IWUSR | S_IRUGO);
25 MODULE_PARM_DESC(debug, "AFS debugging mask");
27 static char *rootcell;
29 module_param(rootcell, charp, 0);
30 MODULE_PARM_DESC(rootcell, "root AFS cell name and VL server IP addr list");
32 struct afs_uuid afs_uuid;
37 static int __init afs_get_client_UUID(void)
44 /* read the MAC address of one of the external interfaces and construct
46 ret = afs_get_MAC_address(afs_uuid.node, sizeof(afs_uuid.node));
51 uuidtime = (u64) ts.tv_sec * 1000 * 1000 * 10;
52 uuidtime += ts.tv_nsec / 100;
53 uuidtime += AFS_UUID_TO_UNIX_TIME;
54 afs_uuid.time_low = uuidtime;
55 afs_uuid.time_mid = uuidtime >> 32;
56 afs_uuid.time_hi_and_version = (uuidtime >> 48) & AFS_UUID_TIMEHI_MASK;
57 afs_uuid.time_hi_and_version = AFS_UUID_VERSION_TIME;
59 get_random_bytes(&clockseq, 2);
60 afs_uuid.clock_seq_low = clockseq;
61 afs_uuid.clock_seq_hi_and_reserved =
62 (clockseq >> 8) & AFS_UUID_CLOCKHI_MASK;
63 afs_uuid.clock_seq_hi_and_reserved = AFS_UUID_VARIANT_STD;
65 _debug("AFS UUID: %08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
68 afs_uuid.time_hi_and_version,
69 afs_uuid.clock_seq_hi_and_reserved,
70 afs_uuid.clock_seq_low,
71 afs_uuid.node[0], afs_uuid.node[1], afs_uuid.node[2],
72 afs_uuid.node[3], afs_uuid.node[4], afs_uuid.node[5]);
78 * initialise the AFS client FS module
80 static int __init afs_init(void)
84 printk(KERN_INFO "kAFS: Red Hat AFS client v0.1 registering.\n");
86 ret = afs_get_client_UUID();
90 /* register the /proc stuff */
91 ret = afs_proc_init();
95 #ifdef CONFIG_AFS_FSCACHE
96 /* we want to be able to cache */
97 ret = fscache_register_netfs(&afs_cache_netfs);
102 /* initialise the cell DB */
103 ret = afs_cell_init(rootcell);
105 goto error_cell_init;
107 /* initialise the VL update process */
108 ret = afs_vlocation_update_init();
110 goto error_vl_update_init;
112 /* initialise the callback update process */
113 ret = afs_callback_update_init();
115 goto error_callback_update_init;
117 /* create the RxRPC transport */
118 ret = afs_open_socket();
120 goto error_open_socket;
122 /* register the filesystems */
132 afs_callback_update_kill();
133 error_callback_update_init:
134 afs_vlocation_purge();
135 error_vl_update_init:
138 #ifdef CONFIG_AFS_FSCACHE
139 fscache_unregister_netfs(&afs_cache_netfs);
144 printk(KERN_ERR "kAFS: failed to register: %d\n", ret);
148 /* XXX late_initcall is kludgy, but the only alternative seems to create
149 * a transport upon the first mount, which is worse. Or is it?
151 late_initcall(afs_init); /* must be called after net/ to create socket */
154 * clean up on module removal
156 static void __exit afs_exit(void)
158 printk(KERN_INFO "kAFS: Red Hat AFS client v0.1 unregistering.\n");
161 afs_kill_lock_manager();
164 afs_callback_update_kill();
165 afs_vlocation_purge();
166 flush_scheduled_work();
168 #ifdef CONFIG_AFS_FSCACHE
169 fscache_unregister_netfs(&afs_cache_netfs);
175 module_exit(afs_exit);