Commit | Line | Data |
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869d81df DT |
1 | /* |
2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
3 | * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved. | |
4 | * | |
5 | * This copyrighted material is made available to anyone wishing to use, | |
6 | * modify, copy, or redistribute it subject to the terms and conditions | |
e9fc2aa0 | 7 | * of the GNU General Public License version 2. |
869d81df | 8 | */ |
29b7998d DT |
9 | |
10 | #include <linux/ctype.h> | |
11 | #include <linux/stat.h> | |
12 | ||
13 | #include "lock_dlm.h" | |
14 | ||
869d81df DT |
15 | static ssize_t proto_name_show(struct gdlm_ls *ls, char *buf) |
16 | { | |
17 | return sprintf(buf, "%s\n", gdlm_ops.lm_proto_name); | |
18 | } | |
19 | ||
20 | static ssize_t block_show(struct gdlm_ls *ls, char *buf) | |
29b7998d DT |
21 | { |
22 | ssize_t ret; | |
23 | int val = 0; | |
24 | ||
25 | if (test_bit(DFL_BLOCK_LOCKS, &ls->flags)) | |
26 | val = 1; | |
27 | ret = sprintf(buf, "%d\n", val); | |
28 | return ret; | |
29 | } | |
30 | ||
869d81df | 31 | static ssize_t block_store(struct gdlm_ls *ls, const char *buf, size_t len) |
29b7998d DT |
32 | { |
33 | ssize_t ret = len; | |
34 | int val; | |
35 | ||
36 | val = simple_strtol(buf, NULL, 0); | |
37 | ||
38 | if (val == 1) | |
39 | set_bit(DFL_BLOCK_LOCKS, &ls->flags); | |
40 | else if (val == 0) { | |
41 | clear_bit(DFL_BLOCK_LOCKS, &ls->flags); | |
42 | gdlm_submit_delayed(ls); | |
62f140c1 | 43 | } else { |
29b7998d | 44 | ret = -EINVAL; |
62f140c1 | 45 | } |
29b7998d DT |
46 | return ret; |
47 | } | |
48 | ||
869d81df | 49 | static ssize_t withdraw_show(struct gdlm_ls *ls, char *buf) |
29b7998d DT |
50 | { |
51 | ssize_t ret; | |
52 | int val = 0; | |
53 | ||
54 | if (test_bit(DFL_WITHDRAW, &ls->flags)) | |
55 | val = 1; | |
56 | ret = sprintf(buf, "%d\n", val); | |
57 | return ret; | |
58 | } | |
59 | ||
869d81df | 60 | static ssize_t withdraw_store(struct gdlm_ls *ls, const char *buf, size_t len) |
29b7998d DT |
61 | { |
62 | ssize_t ret = len; | |
63 | int val; | |
64 | ||
65 | val = simple_strtol(buf, NULL, 0); | |
66 | ||
67 | if (val == 1) | |
68 | set_bit(DFL_WITHDRAW, &ls->flags); | |
69 | else | |
70 | ret = -EINVAL; | |
71 | wake_up(&ls->wait_control); | |
72 | return ret; | |
73 | } | |
74 | ||
869d81df | 75 | static ssize_t id_show(struct gdlm_ls *ls, char *buf) |
29b7998d | 76 | { |
869d81df | 77 | return sprintf(buf, "%u\n", ls->id); |
29b7998d DT |
78 | } |
79 | ||
869d81df | 80 | static ssize_t jid_show(struct gdlm_ls *ls, char *buf) |
29b7998d | 81 | { |
869d81df | 82 | return sprintf(buf, "%d\n", ls->jid); |
29b7998d DT |
83 | } |
84 | ||
869d81df | 85 | static ssize_t first_show(struct gdlm_ls *ls, char *buf) |
29b7998d | 86 | { |
869d81df | 87 | return sprintf(buf, "%d\n", ls->first); |
29b7998d DT |
88 | } |
89 | ||
869d81df | 90 | static ssize_t first_done_show(struct gdlm_ls *ls, char *buf) |
29b7998d DT |
91 | { |
92 | return sprintf(buf, "%d\n", ls->first_done); | |
93 | } | |
94 | ||
869d81df | 95 | static ssize_t recover_show(struct gdlm_ls *ls, char *buf) |
29b7998d | 96 | { |
869d81df | 97 | return sprintf(buf, "%d\n", ls->recover_jid); |
29b7998d DT |
98 | } |
99 | ||
869d81df | 100 | static ssize_t recover_store(struct gdlm_ls *ls, const char *buf, size_t len) |
29b7998d DT |
101 | { |
102 | ls->recover_jid = simple_strtol(buf, NULL, 0); | |
1c089c32 | 103 | ls->fscb(ls->sdp, LM_CB_NEED_RECOVERY, &ls->recover_jid); |
29b7998d DT |
104 | return len; |
105 | } | |
106 | ||
869d81df | 107 | static ssize_t recover_done_show(struct gdlm_ls *ls, char *buf) |
29b7998d | 108 | { |
869d81df | 109 | return sprintf(buf, "%d\n", ls->recover_jid_done); |
29b7998d DT |
110 | } |
111 | ||
6bd70aba DT |
112 | static ssize_t recover_status_show(struct gdlm_ls *ls, char *buf) |
113 | { | |
114 | return sprintf(buf, "%d\n", ls->recover_jid_status); | |
115 | } | |
116 | ||
29b7998d DT |
117 | struct gdlm_attr { |
118 | struct attribute attr; | |
119 | ssize_t (*show)(struct gdlm_ls *, char *); | |
120 | ssize_t (*store)(struct gdlm_ls *, const char *, size_t); | |
121 | }; | |
122 | ||
869d81df DT |
123 | #define GDLM_ATTR(_name,_mode,_show,_store) \ |
124 | static struct gdlm_attr gdlm_attr_##_name = __ATTR(_name,_mode,_show,_store) | |
29b7998d | 125 | |
6bd70aba DT |
126 | GDLM_ATTR(proto_name, 0444, proto_name_show, NULL); |
127 | GDLM_ATTR(block, 0644, block_show, block_store); | |
128 | GDLM_ATTR(withdraw, 0644, withdraw_show, withdraw_store); | |
129 | GDLM_ATTR(id, 0444, id_show, NULL); | |
130 | GDLM_ATTR(jid, 0444, jid_show, NULL); | |
131 | GDLM_ATTR(first, 0444, first_show, NULL); | |
132 | GDLM_ATTR(first_done, 0444, first_done_show, NULL); | |
133 | GDLM_ATTR(recover, 0644, recover_show, recover_store); | |
134 | GDLM_ATTR(recover_done, 0444, recover_done_show, NULL); | |
135 | GDLM_ATTR(recover_status, 0444, recover_status_show, NULL); | |
29b7998d DT |
136 | |
137 | static struct attribute *gdlm_attrs[] = { | |
869d81df | 138 | &gdlm_attr_proto_name.attr, |
29b7998d | 139 | &gdlm_attr_block.attr, |
29b7998d | 140 | &gdlm_attr_withdraw.attr, |
869d81df | 141 | &gdlm_attr_id.attr, |
29b7998d DT |
142 | &gdlm_attr_jid.attr, |
143 | &gdlm_attr_first.attr, | |
144 | &gdlm_attr_first_done.attr, | |
145 | &gdlm_attr_recover.attr, | |
146 | &gdlm_attr_recover_done.attr, | |
6bd70aba | 147 | &gdlm_attr_recover_status.attr, |
29b7998d DT |
148 | NULL, |
149 | }; | |
150 | ||
151 | static ssize_t gdlm_attr_show(struct kobject *kobj, struct attribute *attr, | |
152 | char *buf) | |
153 | { | |
154 | struct gdlm_ls *ls = container_of(kobj, struct gdlm_ls, kobj); | |
155 | struct gdlm_attr *a = container_of(attr, struct gdlm_attr, attr); | |
156 | return a->show ? a->show(ls, buf) : 0; | |
157 | } | |
158 | ||
159 | static ssize_t gdlm_attr_store(struct kobject *kobj, struct attribute *attr, | |
160 | const char *buf, size_t len) | |
161 | { | |
162 | struct gdlm_ls *ls = container_of(kobj, struct gdlm_ls, kobj); | |
163 | struct gdlm_attr *a = container_of(attr, struct gdlm_attr, attr); | |
164 | return a->store ? a->store(ls, buf, len) : len; | |
165 | } | |
166 | ||
167 | static struct sysfs_ops gdlm_attr_ops = { | |
168 | .show = gdlm_attr_show, | |
169 | .store = gdlm_attr_store, | |
170 | }; | |
171 | ||
172 | static struct kobj_type gdlm_ktype = { | |
173 | .default_attrs = gdlm_attrs, | |
174 | .sysfs_ops = &gdlm_attr_ops, | |
175 | }; | |
176 | ||
136a2750 | 177 | static struct kset *gdlm_kset; |
29b7998d | 178 | |
869d81df | 179 | int gdlm_kobject_setup(struct gdlm_ls *ls, struct kobject *fskobj) |
29b7998d DT |
180 | { |
181 | int error; | |
182 | ||
136a2750 | 183 | ls->kobj.kset = gdlm_kset; |
901195ed GKH |
184 | error = kobject_init_and_add(&ls->kobj, &gdlm_ktype, fskobj, |
185 | "lock_module"); | |
869d81df DT |
186 | if (error) |
187 | log_error("can't register kobj %d", error); | |
901195ed | 188 | kobject_uevent(&ls->kobj, KOBJ_ADD); |
29b7998d | 189 | |
869d81df | 190 | return error; |
29b7998d DT |
191 | } |
192 | ||
193 | void gdlm_kobject_release(struct gdlm_ls *ls) | |
194 | { | |
197b12d6 | 195 | kobject_put(&ls->kobj); |
29b7998d DT |
196 | } |
197 | ||
fdd1062e SW |
198 | static int gdlm_uevent(struct kset *kset, struct kobject *kobj, |
199 | struct kobj_uevent_env *env) | |
200 | { | |
201 | struct gdlm_ls *ls = container_of(kobj, struct gdlm_ls, kobj); | |
202 | add_uevent_var(env, "LOCKTABLE=%s:%s", ls->clustername, ls->fsname); | |
203 | add_uevent_var(env, "LOCKPROTO=lock_dlm"); | |
204 | return 0; | |
205 | } | |
206 | ||
207 | static struct kset_uevent_ops gdlm_uevent_ops = { | |
208 | .uevent = gdlm_uevent, | |
209 | }; | |
210 | ||
211 | ||
29b7998d DT |
212 | int gdlm_sysfs_init(void) |
213 | { | |
fdd1062e | 214 | gdlm_kset = kset_create_and_add("lock_dlm", &gdlm_uevent_ops, kernel_kobj); |
136a2750 | 215 | if (!gdlm_kset) { |
8e24eea7 | 216 | printk(KERN_WARNING "%s: can not create kset\n", __func__); |
136a2750 GKH |
217 | return -ENOMEM; |
218 | } | |
219 | return 0; | |
29b7998d DT |
220 | } |
221 | ||
222 | void gdlm_sysfs_exit(void) | |
223 | { | |
136a2750 | 224 | kset_unregister(gdlm_kset); |
29b7998d DT |
225 | } |
226 |