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(0); 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(TCP), 84 define_mask(MSG), 85 define_mask(SOCKET), 86 define_mask(HEARTBEAT), 87 define_mask(HB_BIO), 88 define_mask(DLMFS), 89 define_mask(DLM), 90 define_mask(DLM_DOMAIN), 91 define_mask(DLM_THREAD), 92 define_mask(DLM_MASTER), 93 define_mask(DLM_RECOVERY), 94 define_mask(DLM_GLUE), 95 define_mask(VOTE), 96 define_mask(CONN), 97 define_mask(QUORUM), 98 define_mask(BASTS), 99 define_mask(CLUSTER), 100 define_mask(ERROR), 101 define_mask(NOTICE), 102 define_mask(KTHREAD), 103 }; 104 105 static struct attribute *mlog_attr_ptrs[MLOG_MAX_BITS] = {NULL, }; 106 107 static ssize_t mlog_show(struct kobject *obj, struct attribute *attr, 108 char *buf) 109 { 110 struct mlog_attribute *mlog_attr = to_mlog_attr(attr); 111 112 return mlog_mask_show(mlog_attr->mask, buf); 113 } 114 115 static ssize_t mlog_store(struct kobject *obj, struct attribute *attr, 116 const char *buf, size_t count) 117 { 118 struct mlog_attribute *mlog_attr = to_mlog_attr(attr); 119 120 return mlog_mask_store(mlog_attr->mask, buf, count); 121 } 122 123 static const struct sysfs_ops mlog_attr_ops = { 124 .show = mlog_show, 125 .store = mlog_store, 126 }; 127 128 static struct kobj_type mlog_ktype = { 129 .default_attrs = mlog_attr_ptrs, 130 .sysfs_ops = &mlog_attr_ops, 131 }; 132 133 static struct kset mlog_kset = { 134 .kobj = {.ktype = &mlog_ktype}, 135 }; 136 137 int mlog_sys_init(struct kset *o2cb_kset) 138 { 139 int i = 0; 140 141 while (mlog_attrs[i].attr.mode) { 142 mlog_attr_ptrs[i] = &mlog_attrs[i].attr; 143 i++; 144 } 145 mlog_attr_ptrs[i] = NULL; 146 147 kobject_set_name(&mlog_kset.kobj, "logmask"); 148 mlog_kset.kobj.kset = o2cb_kset; 149 return kset_register(&mlog_kset); 150 } 151 152 void mlog_sys_shutdown(void) 153 { 154 kset_unregister(&mlog_kset); 155 } 156