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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); | |
c1e8d35e | 33 | struct mlog_bits mlog_not_bits = MLOG_BITS_RHS(0); |
52fd3d6f ZB |
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 | { | |
2bd63329 | 52 | if (!strncasecmp(buf, "allow", 5)) { |
52fd3d6f ZB |
53 | __mlog_set_u64(mask, mlog_and_bits); |
54 | __mlog_clear_u64(mask, mlog_not_bits); | |
2bd63329 | 55 | } else if (!strncasecmp(buf, "deny", 4)) { |
52fd3d6f ZB |
56 | __mlog_set_u64(mask, mlog_not_bits); |
57 | __mlog_clear_u64(mask, mlog_and_bits); | |
2bd63329 | 58 | } else if (!strncasecmp(buf, "off", 3)) { |
52fd3d6f ZB |
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 | ||
7c2bd2f9 JP |
67 | void __mlog_printk(const u64 *mask, const char *func, int line, |
68 | const char *fmt, ...) | |
69 | { | |
70 | struct va_format vaf; | |
71 | va_list args; | |
72 | const char *level; | |
73 | const char *prefix = ""; | |
74 | ||
75 | if (!__mlog_test_u64(*mask, mlog_and_bits) || | |
76 | __mlog_test_u64(*mask, mlog_not_bits)) | |
77 | return; | |
78 | ||
79 | if (*mask & ML_ERROR) { | |
80 | level = KERN_ERR; | |
81 | prefix = "ERROR: "; | |
82 | } else if (*mask & ML_NOTICE) { | |
83 | level = KERN_NOTICE; | |
84 | } else { | |
85 | level = KERN_INFO; | |
86 | } | |
87 | ||
88 | va_start(args, fmt); | |
89 | ||
90 | vaf.fmt = fmt; | |
91 | vaf.va = &args; | |
92 | ||
e327284a AM |
93 | printk("%s(%s,%u,%u):%s:%d %s%pV", |
94 | level, current->comm, task_pid_nr(current), | |
95 | raw_smp_processor_id(), func, line, prefix, &vaf); | |
7c2bd2f9 JP |
96 | |
97 | va_end(args); | |
98 | } | |
99 | EXPORT_SYMBOL_GPL(__mlog_printk); | |
100 | ||
52fd3d6f ZB |
101 | struct mlog_attribute { |
102 | struct attribute attr; | |
103 | u64 mask; | |
104 | }; | |
105 | ||
106 | #define to_mlog_attr(_attr) container_of(_attr, struct mlog_attribute, attr) | |
107 | ||
108 | #define define_mask(_name) { \ | |
109 | .attr = { \ | |
110 | .name = #_name, \ | |
111 | .mode = S_IRUGO | S_IWUSR, \ | |
112 | }, \ | |
113 | .mask = ML_##_name, \ | |
114 | } | |
115 | ||
116 | static struct mlog_attribute mlog_attrs[MLOG_MAX_BITS] = { | |
52fd3d6f ZB |
117 | define_mask(TCP), |
118 | define_mask(MSG), | |
119 | define_mask(SOCKET), | |
120 | define_mask(HEARTBEAT), | |
121 | define_mask(HB_BIO), | |
122 | define_mask(DLMFS), | |
123 | define_mask(DLM), | |
124 | define_mask(DLM_DOMAIN), | |
125 | define_mask(DLM_THREAD), | |
126 | define_mask(DLM_MASTER), | |
127 | define_mask(DLM_RECOVERY), | |
52fd3d6f | 128 | define_mask(DLM_GLUE), |
52fd3d6f | 129 | define_mask(VOTE), |
52fd3d6f ZB |
130 | define_mask(CONN), |
131 | define_mask(QUORUM), | |
9b915181 | 132 | define_mask(BASTS), |
41b41a26 | 133 | define_mask(CLUSTER), |
52fd3d6f ZB |
134 | define_mask(ERROR), |
135 | define_mask(NOTICE), | |
136 | define_mask(KTHREAD), | |
137 | }; | |
138 | ||
139 | static struct attribute *mlog_attr_ptrs[MLOG_MAX_BITS] = {NULL, }; | |
140 | ||
141 | static ssize_t mlog_show(struct kobject *obj, struct attribute *attr, | |
142 | char *buf) | |
143 | { | |
144 | struct mlog_attribute *mlog_attr = to_mlog_attr(attr); | |
145 | ||
146 | return mlog_mask_show(mlog_attr->mask, buf); | |
147 | } | |
148 | ||
149 | static ssize_t mlog_store(struct kobject *obj, struct attribute *attr, | |
150 | const char *buf, size_t count) | |
151 | { | |
152 | struct mlog_attribute *mlog_attr = to_mlog_attr(attr); | |
153 | ||
154 | return mlog_mask_store(mlog_attr->mask, buf, count); | |
155 | } | |
156 | ||
52cf25d0 | 157 | static const struct sysfs_ops mlog_attr_ops = { |
52fd3d6f ZB |
158 | .show = mlog_show, |
159 | .store = mlog_store, | |
160 | }; | |
161 | ||
162 | static struct kobj_type mlog_ktype = { | |
163 | .default_attrs = mlog_attr_ptrs, | |
164 | .sysfs_ops = &mlog_attr_ops, | |
165 | }; | |
166 | ||
167 | static struct kset mlog_kset = { | |
34980ca8 | 168 | .kobj = {.ktype = &mlog_ktype}, |
52fd3d6f ZB |
169 | }; |
170 | ||
c60b7178 | 171 | int mlog_sys_init(struct kset *o2cb_kset) |
52fd3d6f ZB |
172 | { |
173 | int i = 0; | |
174 | ||
175 | while (mlog_attrs[i].attr.mode) { | |
176 | mlog_attr_ptrs[i] = &mlog_attrs[i].attr; | |
177 | i++; | |
178 | } | |
179 | mlog_attr_ptrs[i] = NULL; | |
180 | ||
34980ca8 | 181 | kobject_set_name(&mlog_kset.kobj, "logmask"); |
c60b7178 | 182 | mlog_kset.kobj.kset = o2cb_kset; |
52fd3d6f ZB |
183 | return kset_register(&mlog_kset); |
184 | } | |
185 | ||
186 | void mlog_sys_shutdown(void) | |
187 | { | |
188 | kset_unregister(&mlog_kset); | |
189 | } |