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1/* AFS client file system
2 *
3 * Copyright (C) 2002,5 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
5 *
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.
10 */
11
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>
18#include "internal.h"
19
20MODULE_DESCRIPTION("AFS Client File System");
21MODULE_AUTHOR("Red Hat, Inc.");
22MODULE_LICENSE("GPL");
23
24unsigned afs_debug;
25module_param_named(debug, afs_debug, uint, S_IWUSR | S_IRUGO);
26MODULE_PARM_DESC(debug, "AFS debugging mask");
27
28static char *rootcell;
29
30module_param(rootcell, charp, 0);
31MODULE_PARM_DESC(rootcell, "root AFS cell name and VL server IP addr list");
32
33struct afs_uuid afs_uuid;
34struct workqueue_struct *afs_wq;
35
36/*
37 * get a client UUID
38 */
39static int __init afs_get_client_UUID(void)
40{
41 struct timespec ts;
42 u64 uuidtime;
43 u16 clockseq;
44 int ret;
45
46 /* read the MAC address of one of the external interfaces and construct
47 * a UUID from it */
48 ret = afs_get_MAC_address(afs_uuid.node, sizeof(afs_uuid.node));
49 if (ret < 0)
50 return ret;
51
52 getnstimeofday(&ts);
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;
60
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;
66
67 _debug("AFS UUID: %08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
68 afs_uuid.time_low,
69 afs_uuid.time_mid,
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]);
75
76 return 0;
77}
78
79/*
80 * initialise the AFS client FS module
81 */
82static int __init afs_init(void)
83{
84 int ret;
85
86 printk(KERN_INFO "kAFS: Red Hat AFS client v0.1 registering.\n");
87
88 ret = afs_get_client_UUID();
89 if (ret < 0)
90 return ret;
91
92 /* create workqueue */
93 ret = -ENOMEM;
94 afs_wq = alloc_workqueue("afs", 0, 0);
95 if (!afs_wq)
96 return ret;
97
98 /* register the /proc stuff */
99 ret = afs_proc_init();
100 if (ret < 0)
101 goto error_proc;
102
103#ifdef CONFIG_AFS_FSCACHE
104 /* we want to be able to cache */
105 ret = fscache_register_netfs(&afs_cache_netfs);
106 if (ret < 0)
107 goto error_cache;
108#endif
109
110 /* initialise the cell DB */
111 ret = afs_cell_init(rootcell);
112 if (ret < 0)
113 goto error_cell_init;
114
115 /* initialise the VL update process */
116 ret = afs_vlocation_update_init();
117 if (ret < 0)
118 goto error_vl_update_init;
119
120 /* initialise the callback update process */
121 ret = afs_callback_update_init();
122 if (ret < 0)
123 goto error_callback_update_init;
124
125 /* create the RxRPC transport */
126 ret = afs_open_socket();
127 if (ret < 0)
128 goto error_open_socket;
129
130 /* register the filesystems */
131 ret = afs_fs_init();
132 if (ret < 0)
133 goto error_fs;
134
135 return ret;
136
137error_fs:
138 afs_close_socket();
139error_open_socket:
140 afs_callback_update_kill();
141error_callback_update_init:
142 afs_vlocation_purge();
143error_vl_update_init:
144 afs_cell_purge();
145error_cell_init:
146#ifdef CONFIG_AFS_FSCACHE
147 fscache_unregister_netfs(&afs_cache_netfs);
148error_cache:
149#endif
150 afs_proc_cleanup();
151error_proc:
152 destroy_workqueue(afs_wq);
153 rcu_barrier();
154 printk(KERN_ERR "kAFS: failed to register: %d\n", ret);
155 return ret;
156}
157
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?
160 */
161late_initcall(afs_init); /* must be called after net/ to create socket */
162
163/*
164 * clean up on module removal
165 */
166static void __exit afs_exit(void)
167{
168 printk(KERN_INFO "kAFS: Red Hat AFS client v0.1 unregistering.\n");
169
170 afs_fs_exit();
171 afs_kill_lock_manager();
172 afs_close_socket();
173 afs_purge_servers();
174 afs_callback_update_kill();
175 afs_vlocation_purge();
176 destroy_workqueue(afs_wq);
177 afs_cell_purge();
178#ifdef CONFIG_AFS_FSCACHE
179 fscache_unregister_netfs(&afs_cache_netfs);
180#endif
181 afs_proc_cleanup();
182 rcu_barrier();
183}
184
185module_exit(afs_exit);
1/* AFS client file system
2 *
3 * Copyright (C) 2002,5 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
5 *
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.
10 */
11
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 "internal.h"
18
19MODULE_DESCRIPTION("AFS Client File System");
20MODULE_AUTHOR("Red Hat, Inc.");
21MODULE_LICENSE("GPL");
22
23unsigned afs_debug;
24module_param_named(debug, afs_debug, uint, S_IWUSR | S_IRUGO);
25MODULE_PARM_DESC(debug, "AFS debugging mask");
26
27static char *rootcell;
28
29module_param(rootcell, charp, 0);
30MODULE_PARM_DESC(rootcell, "root AFS cell name and VL server IP addr list");
31
32struct afs_uuid afs_uuid;
33struct workqueue_struct *afs_wq;
34
35/*
36 * get a client UUID
37 */
38static int __init afs_get_client_UUID(void)
39{
40 struct timespec ts;
41 u64 uuidtime;
42 u16 clockseq;
43 int ret;
44
45 /* read the MAC address of one of the external interfaces and construct
46 * a UUID from it */
47 ret = afs_get_MAC_address(afs_uuid.node, sizeof(afs_uuid.node));
48 if (ret < 0)
49 return ret;
50
51 getnstimeofday(&ts);
52 uuidtime = (u64) ts.tv_sec * 1000 * 1000 * 10;
53 uuidtime += ts.tv_nsec / 100;
54 uuidtime += AFS_UUID_TO_UNIX_TIME;
55 afs_uuid.time_low = uuidtime;
56 afs_uuid.time_mid = uuidtime >> 32;
57 afs_uuid.time_hi_and_version = (uuidtime >> 48) & AFS_UUID_TIMEHI_MASK;
58 afs_uuid.time_hi_and_version |= AFS_UUID_VERSION_TIME;
59
60 get_random_bytes(&clockseq, 2);
61 afs_uuid.clock_seq_low = clockseq;
62 afs_uuid.clock_seq_hi_and_reserved =
63 (clockseq >> 8) & AFS_UUID_CLOCKHI_MASK;
64 afs_uuid.clock_seq_hi_and_reserved |= AFS_UUID_VARIANT_STD;
65
66 _debug("AFS UUID: %08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
67 afs_uuid.time_low,
68 afs_uuid.time_mid,
69 afs_uuid.time_hi_and_version,
70 afs_uuid.clock_seq_hi_and_reserved,
71 afs_uuid.clock_seq_low,
72 afs_uuid.node[0], afs_uuid.node[1], afs_uuid.node[2],
73 afs_uuid.node[3], afs_uuid.node[4], afs_uuid.node[5]);
74
75 return 0;
76}
77
78/*
79 * initialise the AFS client FS module
80 */
81static int __init afs_init(void)
82{
83 int ret;
84
85 printk(KERN_INFO "kAFS: Red Hat AFS client v0.1 registering.\n");
86
87 ret = afs_get_client_UUID();
88 if (ret < 0)
89 return ret;
90
91 /* create workqueue */
92 ret = -ENOMEM;
93 afs_wq = alloc_workqueue("afs", 0, 0);
94 if (!afs_wq)
95 return ret;
96
97 /* register the /proc stuff */
98 ret = afs_proc_init();
99 if (ret < 0)
100 goto error_proc;
101
102#ifdef CONFIG_AFS_FSCACHE
103 /* we want to be able to cache */
104 ret = fscache_register_netfs(&afs_cache_netfs);
105 if (ret < 0)
106 goto error_cache;
107#endif
108
109 /* initialise the cell DB */
110 ret = afs_cell_init(rootcell);
111 if (ret < 0)
112 goto error_cell_init;
113
114 /* initialise the VL update process */
115 ret = afs_vlocation_update_init();
116 if (ret < 0)
117 goto error_vl_update_init;
118
119 /* initialise the callback update process */
120 ret = afs_callback_update_init();
121 if (ret < 0)
122 goto error_callback_update_init;
123
124 /* create the RxRPC transport */
125 ret = afs_open_socket();
126 if (ret < 0)
127 goto error_open_socket;
128
129 /* register the filesystems */
130 ret = afs_fs_init();
131 if (ret < 0)
132 goto error_fs;
133
134 return ret;
135
136error_fs:
137 afs_close_socket();
138error_open_socket:
139 afs_callback_update_kill();
140error_callback_update_init:
141 afs_vlocation_purge();
142error_vl_update_init:
143 afs_cell_purge();
144error_cell_init:
145#ifdef CONFIG_AFS_FSCACHE
146 fscache_unregister_netfs(&afs_cache_netfs);
147error_cache:
148#endif
149 afs_proc_cleanup();
150error_proc:
151 destroy_workqueue(afs_wq);
152 rcu_barrier();
153 printk(KERN_ERR "kAFS: failed to register: %d\n", ret);
154 return ret;
155}
156
157/* XXX late_initcall is kludgy, but the only alternative seems to create
158 * a transport upon the first mount, which is worse. Or is it?
159 */
160late_initcall(afs_init); /* must be called after net/ to create socket */
161
162/*
163 * clean up on module removal
164 */
165static void __exit afs_exit(void)
166{
167 printk(KERN_INFO "kAFS: Red Hat AFS client v0.1 unregistering.\n");
168
169 afs_fs_exit();
170 afs_kill_lock_manager();
171 afs_close_socket();
172 afs_purge_servers();
173 afs_callback_update_kill();
174 afs_vlocation_purge();
175 destroy_workqueue(afs_wq);
176 afs_cell_purge();
177#ifdef CONFIG_AFS_FSCACHE
178 fscache_unregister_netfs(&afs_cache_netfs);
179#endif
180 afs_proc_cleanup();
181 rcu_barrier();
182}
183
184module_exit(afs_exit);