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1// SPDX-License-Identifier: GPL-2.0-or-later
2/* -*- mode: c; c-basic-offset: 8; -*-
3 * vim: noexpandtab sw=8 ts=8 sts=0:
4 *
5 * Copyright (C) 2004, 2005 Oracle. All rights reserved.
6 */
7
8#include <linux/module.h>
9#include <linux/kernel.h>
10#include <linux/proc_fs.h>
11#include <linux/seq_file.h>
12#include <linux/string.h>
13#include <linux/uaccess.h>
14
15#include "masklog.h"
16
17struct mlog_bits mlog_and_bits = MLOG_BITS_RHS(MLOG_INITIAL_AND_MASK);
18EXPORT_SYMBOL_GPL(mlog_and_bits);
19struct mlog_bits mlog_not_bits = MLOG_BITS_RHS(0);
20EXPORT_SYMBOL_GPL(mlog_not_bits);
21
22static ssize_t mlog_mask_show(u64 mask, char *buf)
23{
24 char *state;
25
26 if (__mlog_test_u64(mask, mlog_and_bits))
27 state = "allow";
28 else if (__mlog_test_u64(mask, mlog_not_bits))
29 state = "deny";
30 else
31 state = "off";
32
33 return snprintf(buf, PAGE_SIZE, "%s\n", state);
34}
35
36static ssize_t mlog_mask_store(u64 mask, const char *buf, size_t count)
37{
38 if (!strncasecmp(buf, "allow", 5)) {
39 __mlog_set_u64(mask, mlog_and_bits);
40 __mlog_clear_u64(mask, mlog_not_bits);
41 } else if (!strncasecmp(buf, "deny", 4)) {
42 __mlog_set_u64(mask, mlog_not_bits);
43 __mlog_clear_u64(mask, mlog_and_bits);
44 } else if (!strncasecmp(buf, "off", 3)) {
45 __mlog_clear_u64(mask, mlog_not_bits);
46 __mlog_clear_u64(mask, mlog_and_bits);
47 } else
48 return -EINVAL;
49
50 return count;
51}
52
53void __mlog_printk(const u64 *mask, const char *func, int line,
54 const char *fmt, ...)
55{
56 struct va_format vaf;
57 va_list args;
58 const char *level;
59 const char *prefix = "";
60
61 if (!__mlog_test_u64(*mask, mlog_and_bits) ||
62 __mlog_test_u64(*mask, mlog_not_bits))
63 return;
64
65 if (*mask & ML_ERROR) {
66 level = KERN_ERR;
67 prefix = "ERROR: ";
68 } else if (*mask & ML_NOTICE) {
69 level = KERN_NOTICE;
70 } else {
71 level = KERN_INFO;
72 }
73
74 va_start(args, fmt);
75
76 vaf.fmt = fmt;
77 vaf.va = &args;
78
79 printk("%s(%s,%u,%u):%s:%d %s%pV",
80 level, current->comm, task_pid_nr(current),
81 raw_smp_processor_id(), func, line, prefix, &vaf);
82
83 va_end(args);
84}
85EXPORT_SYMBOL_GPL(__mlog_printk);
86
87struct mlog_attribute {
88 struct attribute attr;
89 u64 mask;
90};
91
92#define to_mlog_attr(_attr) container_of(_attr, struct mlog_attribute, attr)
93
94#define define_mask(_name) { \
95 .attr = { \
96 .name = #_name, \
97 .mode = S_IRUGO | S_IWUSR, \
98 }, \
99 .mask = ML_##_name, \
100}
101
102static struct mlog_attribute mlog_attrs[MLOG_MAX_BITS] = {
103 define_mask(TCP),
104 define_mask(MSG),
105 define_mask(SOCKET),
106 define_mask(HEARTBEAT),
107 define_mask(HB_BIO),
108 define_mask(DLMFS),
109 define_mask(DLM),
110 define_mask(DLM_DOMAIN),
111 define_mask(DLM_THREAD),
112 define_mask(DLM_MASTER),
113 define_mask(DLM_RECOVERY),
114 define_mask(DLM_GLUE),
115 define_mask(VOTE),
116 define_mask(CONN),
117 define_mask(QUORUM),
118 define_mask(BASTS),
119 define_mask(CLUSTER),
120 define_mask(ERROR),
121 define_mask(NOTICE),
122 define_mask(KTHREAD),
123};
124
125static struct attribute *mlog_attr_ptrs[MLOG_MAX_BITS] = {NULL, };
126
127static ssize_t mlog_show(struct kobject *obj, struct attribute *attr,
128 char *buf)
129{
130 struct mlog_attribute *mlog_attr = to_mlog_attr(attr);
131
132 return mlog_mask_show(mlog_attr->mask, buf);
133}
134
135static ssize_t mlog_store(struct kobject *obj, struct attribute *attr,
136 const char *buf, size_t count)
137{
138 struct mlog_attribute *mlog_attr = to_mlog_attr(attr);
139
140 return mlog_mask_store(mlog_attr->mask, buf, count);
141}
142
143static const struct sysfs_ops mlog_attr_ops = {
144 .show = mlog_show,
145 .store = mlog_store,
146};
147
148static struct kobj_type mlog_ktype = {
149 .default_attrs = mlog_attr_ptrs,
150 .sysfs_ops = &mlog_attr_ops,
151};
152
153static struct kset mlog_kset = {
154 .kobj = {.ktype = &mlog_ktype},
155};
156
157int mlog_sys_init(struct kset *o2cb_kset)
158{
159 int i = 0;
160
161 while (mlog_attrs[i].attr.mode) {
162 mlog_attr_ptrs[i] = &mlog_attrs[i].attr;
163 i++;
164 }
165 mlog_attr_ptrs[i] = NULL;
166
167 kobject_set_name(&mlog_kset.kobj, "logmask");
168 mlog_kset.kobj.kset = o2cb_kset;
169 return kset_register(&mlog_kset);
170}
171
172void mlog_sys_shutdown(void)
173{
174 kset_unregister(&mlog_kset);
175}
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 <linux/uaccess.h>
28
29#include "masklog.h"
30
31struct mlog_bits mlog_and_bits = MLOG_BITS_RHS(MLOG_INITIAL_AND_MASK);
32EXPORT_SYMBOL_GPL(mlog_and_bits);
33struct mlog_bits mlog_not_bits = MLOG_BITS_RHS(0);
34EXPORT_SYMBOL_GPL(mlog_not_bits);
35
36static 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
50static ssize_t mlog_mask_store(u64 mask, const char *buf, size_t count)
51{
52 if (!strncasecmp(buf, "allow", 5)) {
53 __mlog_set_u64(mask, mlog_and_bits);
54 __mlog_clear_u64(mask, mlog_not_bits);
55 } else if (!strncasecmp(buf, "deny", 4)) {
56 __mlog_set_u64(mask, mlog_not_bits);
57 __mlog_clear_u64(mask, mlog_and_bits);
58 } else if (!strncasecmp(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
67void __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
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);
96
97 va_end(args);
98}
99EXPORT_SYMBOL_GPL(__mlog_printk);
100
101struct 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
116static struct mlog_attribute mlog_attrs[MLOG_MAX_BITS] = {
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),
128 define_mask(DLM_GLUE),
129 define_mask(VOTE),
130 define_mask(CONN),
131 define_mask(QUORUM),
132 define_mask(BASTS),
133 define_mask(CLUSTER),
134 define_mask(ERROR),
135 define_mask(NOTICE),
136 define_mask(KTHREAD),
137};
138
139static struct attribute *mlog_attr_ptrs[MLOG_MAX_BITS] = {NULL, };
140
141static 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
149static 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
157static const struct sysfs_ops mlog_attr_ops = {
158 .show = mlog_show,
159 .store = mlog_store,
160};
161
162static struct kobj_type mlog_ktype = {
163 .default_attrs = mlog_attr_ptrs,
164 .sysfs_ops = &mlog_attr_ops,
165};
166
167static struct kset mlog_kset = {
168 .kobj = {.ktype = &mlog_ktype},
169};
170
171int mlog_sys_init(struct kset *o2cb_kset)
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
181 kobject_set_name(&mlog_kset.kobj, "logmask");
182 mlog_kset.kobj.kset = o2cb_kset;
183 return kset_register(&mlog_kset);
184}
185
186void mlog_sys_shutdown(void)
187{
188 kset_unregister(&mlog_kset);
189}