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Merge commit 'v2.6.28-rc2' into x86/pci-ioapic-boot-irq-quirks
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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, \
77 .mode = S_IRUGO | S_IWUSR, \
78 }, \
79 .mask = ML_##_name, \
80 }
81
82 static struct mlog_attribute mlog_attrs[MLOG_MAX_BITS] = {
83 define_mask(ENTRY),
84 define_mask(EXIT),
85 define_mask(TCP),
86 define_mask(MSG),
87 define_mask(SOCKET),
88 define_mask(HEARTBEAT),
89 define_mask(HB_BIO),
90 define_mask(DLMFS),
91 define_mask(DLM),
92 define_mask(DLM_DOMAIN),
93 define_mask(DLM_THREAD),
94 define_mask(DLM_MASTER),
95 define_mask(DLM_RECOVERY),
96 define_mask(AIO),
97 define_mask(JOURNAL),
98 define_mask(DISK_ALLOC),
99 define_mask(SUPER),
100 define_mask(FILE_IO),
101 define_mask(EXTENT_MAP),
102 define_mask(DLM_GLUE),
103 define_mask(BH_IO),
104 define_mask(UPTODATE),
105 define_mask(NAMEI),
106 define_mask(INODE),
107 define_mask(VOTE),
108 define_mask(DCACHE),
109 define_mask(CONN),
110 define_mask(QUORUM),
111 define_mask(EXPORT),
112 define_mask(XATTR),
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 = {.ktype = &mlog_ktype},
148 };
149
150 int mlog_sys_init(struct kset *o2cb_kset)
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 kobject_set_name(&mlog_kset.kobj, "logmask");
161 mlog_kset.kobj.kset = o2cb_kset;
162 return kset_register(&mlog_kset);
163 }
164
165 void mlog_sys_shutdown(void)
166 {
167 kset_unregister(&mlog_kset);
168 }