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1 | /* -*- mode: c; c-basic-offset: 8; -*- |
2 | * vim: noexpandtab sw=8 ts=8 sts=0: | |
3 | * | |
4 | * Copyright (C) 2004, 2005 Oracle. All rights reserved. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public | |
8 | * License as published by the Free Software Foundation; either | |
9 | * version 2 of the License, or (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public | |
17 | * License along with this program; if not, write to the | |
18 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | * Boston, MA 021110-1307, USA. | |
20 | */ | |
21 | ||
22 | #include <linux/module.h> | |
23 | #include <linux/kernel.h> | |
24 | #include <linux/proc_fs.h> | |
25 | #include <linux/seq_file.h> | |
26 | #include <linux/string.h> | |
27 | #include <asm/uaccess.h> | |
28 | ||
29 | #include "masklog.h" | |
30 | ||
31 | struct mlog_bits mlog_and_bits = MLOG_BITS_RHS(MLOG_INITIAL_AND_MASK); | |
32 | EXPORT_SYMBOL_GPL(mlog_and_bits); | |
33 | struct mlog_bits mlog_not_bits = MLOG_BITS_RHS(MLOG_INITIAL_NOT_MASK); | |
34 | EXPORT_SYMBOL_GPL(mlog_not_bits); | |
35 | ||
36 | static ssize_t mlog_mask_show(u64 mask, char *buf) | |
37 | { | |
38 | char *state; | |
39 | ||
40 | if (__mlog_test_u64(mask, mlog_and_bits)) | |
41 | state = "allow"; | |
42 | else if (__mlog_test_u64(mask, mlog_not_bits)) | |
43 | state = "deny"; | |
44 | else | |
45 | state = "off"; | |
46 | ||
47 | return snprintf(buf, PAGE_SIZE, "%s\n", state); | |
48 | } | |
49 | ||
50 | static ssize_t mlog_mask_store(u64 mask, const char *buf, size_t count) | |
51 | { | |
52 | if (!strnicmp(buf, "allow", 5)) { | |
53 | __mlog_set_u64(mask, mlog_and_bits); | |
54 | __mlog_clear_u64(mask, mlog_not_bits); | |
55 | } else if (!strnicmp(buf, "deny", 4)) { | |
56 | __mlog_set_u64(mask, mlog_not_bits); | |
57 | __mlog_clear_u64(mask, mlog_and_bits); | |
58 | } else if (!strnicmp(buf, "off", 3)) { | |
59 | __mlog_clear_u64(mask, mlog_not_bits); | |
60 | __mlog_clear_u64(mask, mlog_and_bits); | |
61 | } else | |
62 | return -EINVAL; | |
63 | ||
64 | return count; | |
65 | } | |
66 | ||
67 | struct mlog_attribute { | |
68 | struct attribute attr; | |
69 | u64 mask; | |
70 | }; | |
71 | ||
72 | #define to_mlog_attr(_attr) container_of(_attr, struct mlog_attribute, attr) | |
73 | ||
74 | #define define_mask(_name) { \ | |
75 | .attr = { \ | |
76 | .name = #_name, \ | |
93cc9ac4 | 77 | .owner = THIS_MODULE, \ |
52fd3d6f ZB |
78 | .mode = S_IRUGO | S_IWUSR, \ |
79 | }, \ | |
80 | .mask = ML_##_name, \ | |
81 | } | |
82 | ||
83 | static struct mlog_attribute mlog_attrs[MLOG_MAX_BITS] = { | |
84 | define_mask(ENTRY), | |
85 | define_mask(EXIT), | |
86 | define_mask(TCP), | |
87 | define_mask(MSG), | |
88 | define_mask(SOCKET), | |
89 | define_mask(HEARTBEAT), | |
90 | define_mask(HB_BIO), | |
91 | define_mask(DLMFS), | |
92 | define_mask(DLM), | |
93 | define_mask(DLM_DOMAIN), | |
94 | define_mask(DLM_THREAD), | |
95 | define_mask(DLM_MASTER), | |
96 | define_mask(DLM_RECOVERY), | |
97 | define_mask(AIO), | |
98 | define_mask(JOURNAL), | |
99 | define_mask(DISK_ALLOC), | |
100 | define_mask(SUPER), | |
101 | define_mask(FILE_IO), | |
102 | define_mask(EXTENT_MAP), | |
103 | define_mask(DLM_GLUE), | |
104 | define_mask(BH_IO), | |
105 | define_mask(UPTODATE), | |
106 | define_mask(NAMEI), | |
107 | define_mask(INODE), | |
108 | define_mask(VOTE), | |
109 | define_mask(DCACHE), | |
110 | define_mask(CONN), | |
111 | define_mask(QUORUM), | |
112 | define_mask(EXPORT), | |
113 | define_mask(ERROR), | |
114 | define_mask(NOTICE), | |
115 | define_mask(KTHREAD), | |
116 | }; | |
117 | ||
118 | static struct attribute *mlog_attr_ptrs[MLOG_MAX_BITS] = {NULL, }; | |
119 | ||
120 | static ssize_t mlog_show(struct kobject *obj, struct attribute *attr, | |
121 | char *buf) | |
122 | { | |
123 | struct mlog_attribute *mlog_attr = to_mlog_attr(attr); | |
124 | ||
125 | return mlog_mask_show(mlog_attr->mask, buf); | |
126 | } | |
127 | ||
128 | static ssize_t mlog_store(struct kobject *obj, struct attribute *attr, | |
129 | const char *buf, size_t count) | |
130 | { | |
131 | struct mlog_attribute *mlog_attr = to_mlog_attr(attr); | |
132 | ||
133 | return mlog_mask_store(mlog_attr->mask, buf, count); | |
134 | } | |
135 | ||
136 | static struct sysfs_ops mlog_attr_ops = { | |
137 | .show = mlog_show, | |
138 | .store = mlog_store, | |
139 | }; | |
140 | ||
141 | static struct kobj_type mlog_ktype = { | |
142 | .default_attrs = mlog_attr_ptrs, | |
143 | .sysfs_ops = &mlog_attr_ops, | |
144 | }; | |
145 | ||
146 | static struct kset mlog_kset = { | |
147 | .kobj = {.name = "logmask", .ktype = &mlog_ktype}, | |
148 | }; | |
149 | ||
150 | int mlog_sys_init(struct subsystem *o2cb_subsys) | |
151 | { | |
152 | int i = 0; | |
153 | ||
154 | while (mlog_attrs[i].attr.mode) { | |
155 | mlog_attr_ptrs[i] = &mlog_attrs[i].attr; | |
156 | i++; | |
157 | } | |
158 | mlog_attr_ptrs[i] = NULL; | |
159 | ||
160 | mlog_kset.subsys = o2cb_subsys; | |
161 | return kset_register(&mlog_kset); | |
162 | } | |
163 | ||
164 | void mlog_sys_shutdown(void) | |
165 | { | |
166 | kset_unregister(&mlog_kset); | |
167 | } |