152fd3d6fSZach Brown /* -*- mode: c; c-basic-offset: 8; -*- 252fd3d6fSZach Brown * vim: noexpandtab sw=8 ts=8 sts=0: 352fd3d6fSZach Brown * 452fd3d6fSZach Brown * Copyright (C) 2004, 2005 Oracle. All rights reserved. 552fd3d6fSZach Brown * 652fd3d6fSZach Brown * This program is free software; you can redistribute it and/or 752fd3d6fSZach Brown * modify it under the terms of the GNU General Public 852fd3d6fSZach Brown * License as published by the Free Software Foundation; either 952fd3d6fSZach Brown * version 2 of the License, or (at your option) any later version. 1052fd3d6fSZach Brown * 1152fd3d6fSZach Brown * This program is distributed in the hope that it will be useful, 1252fd3d6fSZach Brown * but WITHOUT ANY WARRANTY; without even the implied warranty of 1352fd3d6fSZach Brown * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 1452fd3d6fSZach Brown * General Public License for more details. 1552fd3d6fSZach Brown * 1652fd3d6fSZach Brown * You should have received a copy of the GNU General Public 1752fd3d6fSZach Brown * License along with this program; if not, write to the 1852fd3d6fSZach Brown * Free Software Foundation, Inc., 59 Temple Place - Suite 330, 1952fd3d6fSZach Brown * Boston, MA 021110-1307, USA. 2052fd3d6fSZach Brown */ 2152fd3d6fSZach Brown 2252fd3d6fSZach Brown #include <linux/module.h> 2352fd3d6fSZach Brown #include <linux/kernel.h> 2452fd3d6fSZach Brown #include <linux/proc_fs.h> 2552fd3d6fSZach Brown #include <linux/seq_file.h> 2652fd3d6fSZach Brown #include <linux/string.h> 2752fd3d6fSZach Brown #include <asm/uaccess.h> 2852fd3d6fSZach Brown 2952fd3d6fSZach Brown #include "masklog.h" 3052fd3d6fSZach Brown 3152fd3d6fSZach Brown struct mlog_bits mlog_and_bits = MLOG_BITS_RHS(MLOG_INITIAL_AND_MASK); 3252fd3d6fSZach Brown EXPORT_SYMBOL_GPL(mlog_and_bits); 33c1e8d35eSTao Ma struct mlog_bits mlog_not_bits = MLOG_BITS_RHS(0); 3452fd3d6fSZach Brown EXPORT_SYMBOL_GPL(mlog_not_bits); 3552fd3d6fSZach Brown 3652fd3d6fSZach Brown static ssize_t mlog_mask_show(u64 mask, char *buf) 3752fd3d6fSZach Brown { 3852fd3d6fSZach Brown char *state; 3952fd3d6fSZach Brown 4052fd3d6fSZach Brown if (__mlog_test_u64(mask, mlog_and_bits)) 4152fd3d6fSZach Brown state = "allow"; 4252fd3d6fSZach Brown else if (__mlog_test_u64(mask, mlog_not_bits)) 4352fd3d6fSZach Brown state = "deny"; 4452fd3d6fSZach Brown else 4552fd3d6fSZach Brown state = "off"; 4652fd3d6fSZach Brown 4752fd3d6fSZach Brown return snprintf(buf, PAGE_SIZE, "%s\n", state); 4852fd3d6fSZach Brown } 4952fd3d6fSZach Brown 5052fd3d6fSZach Brown static ssize_t mlog_mask_store(u64 mask, const char *buf, size_t count) 5152fd3d6fSZach Brown { 522bd63329SRasmus Villemoes if (!strncasecmp(buf, "allow", 5)) { 5352fd3d6fSZach Brown __mlog_set_u64(mask, mlog_and_bits); 5452fd3d6fSZach Brown __mlog_clear_u64(mask, mlog_not_bits); 552bd63329SRasmus Villemoes } else if (!strncasecmp(buf, "deny", 4)) { 5652fd3d6fSZach Brown __mlog_set_u64(mask, mlog_not_bits); 5752fd3d6fSZach Brown __mlog_clear_u64(mask, mlog_and_bits); 582bd63329SRasmus Villemoes } else if (!strncasecmp(buf, "off", 3)) { 5952fd3d6fSZach Brown __mlog_clear_u64(mask, mlog_not_bits); 6052fd3d6fSZach Brown __mlog_clear_u64(mask, mlog_and_bits); 6152fd3d6fSZach Brown } else 6252fd3d6fSZach Brown return -EINVAL; 6352fd3d6fSZach Brown 6452fd3d6fSZach Brown return count; 6552fd3d6fSZach Brown } 6652fd3d6fSZach Brown 677c2bd2f9SJoe Perches void __mlog_printk(const u64 *mask, const char *func, int line, 687c2bd2f9SJoe Perches const char *fmt, ...) 697c2bd2f9SJoe Perches { 707c2bd2f9SJoe Perches struct va_format vaf; 717c2bd2f9SJoe Perches va_list args; 727c2bd2f9SJoe Perches const char *level; 737c2bd2f9SJoe Perches const char *prefix = ""; 747c2bd2f9SJoe Perches 757c2bd2f9SJoe Perches if (!__mlog_test_u64(*mask, mlog_and_bits) || 767c2bd2f9SJoe Perches __mlog_test_u64(*mask, mlog_not_bits)) 777c2bd2f9SJoe Perches return; 787c2bd2f9SJoe Perches 797c2bd2f9SJoe Perches if (*mask & ML_ERROR) { 807c2bd2f9SJoe Perches level = KERN_ERR; 817c2bd2f9SJoe Perches prefix = "ERROR: "; 827c2bd2f9SJoe Perches } else if (*mask & ML_NOTICE) { 837c2bd2f9SJoe Perches level = KERN_NOTICE; 847c2bd2f9SJoe Perches } else { 857c2bd2f9SJoe Perches level = KERN_INFO; 867c2bd2f9SJoe Perches } 877c2bd2f9SJoe Perches 887c2bd2f9SJoe Perches va_start(args, fmt); 897c2bd2f9SJoe Perches 907c2bd2f9SJoe Perches vaf.fmt = fmt; 917c2bd2f9SJoe Perches vaf.va = &args; 927c2bd2f9SJoe Perches 93*e327284aSAndrew Morton printk("%s(%s,%u,%u):%s:%d %s%pV", 94*e327284aSAndrew Morton level, current->comm, task_pid_nr(current), 95*e327284aSAndrew Morton raw_smp_processor_id(), func, line, prefix, &vaf); 967c2bd2f9SJoe Perches 977c2bd2f9SJoe Perches va_end(args); 987c2bd2f9SJoe Perches } 997c2bd2f9SJoe Perches EXPORT_SYMBOL_GPL(__mlog_printk); 1007c2bd2f9SJoe Perches 10152fd3d6fSZach Brown struct mlog_attribute { 10252fd3d6fSZach Brown struct attribute attr; 10352fd3d6fSZach Brown u64 mask; 10452fd3d6fSZach Brown }; 10552fd3d6fSZach Brown 10652fd3d6fSZach Brown #define to_mlog_attr(_attr) container_of(_attr, struct mlog_attribute, attr) 10752fd3d6fSZach Brown 10852fd3d6fSZach Brown #define define_mask(_name) { \ 10952fd3d6fSZach Brown .attr = { \ 11052fd3d6fSZach Brown .name = #_name, \ 11152fd3d6fSZach Brown .mode = S_IRUGO | S_IWUSR, \ 11252fd3d6fSZach Brown }, \ 11352fd3d6fSZach Brown .mask = ML_##_name, \ 11452fd3d6fSZach Brown } 11552fd3d6fSZach Brown 11652fd3d6fSZach Brown static struct mlog_attribute mlog_attrs[MLOG_MAX_BITS] = { 11752fd3d6fSZach Brown define_mask(TCP), 11852fd3d6fSZach Brown define_mask(MSG), 11952fd3d6fSZach Brown define_mask(SOCKET), 12052fd3d6fSZach Brown define_mask(HEARTBEAT), 12152fd3d6fSZach Brown define_mask(HB_BIO), 12252fd3d6fSZach Brown define_mask(DLMFS), 12352fd3d6fSZach Brown define_mask(DLM), 12452fd3d6fSZach Brown define_mask(DLM_DOMAIN), 12552fd3d6fSZach Brown define_mask(DLM_THREAD), 12652fd3d6fSZach Brown define_mask(DLM_MASTER), 12752fd3d6fSZach Brown define_mask(DLM_RECOVERY), 12852fd3d6fSZach Brown define_mask(DLM_GLUE), 12952fd3d6fSZach Brown define_mask(VOTE), 13052fd3d6fSZach Brown define_mask(CONN), 13152fd3d6fSZach Brown define_mask(QUORUM), 1329b915181SSunil Mushran define_mask(BASTS), 13341b41a26SSunil Mushran define_mask(CLUSTER), 13452fd3d6fSZach Brown define_mask(ERROR), 13552fd3d6fSZach Brown define_mask(NOTICE), 13652fd3d6fSZach Brown define_mask(KTHREAD), 13752fd3d6fSZach Brown }; 13852fd3d6fSZach Brown 13952fd3d6fSZach Brown static struct attribute *mlog_attr_ptrs[MLOG_MAX_BITS] = {NULL, }; 14052fd3d6fSZach Brown 14152fd3d6fSZach Brown static ssize_t mlog_show(struct kobject *obj, struct attribute *attr, 14252fd3d6fSZach Brown char *buf) 14352fd3d6fSZach Brown { 14452fd3d6fSZach Brown struct mlog_attribute *mlog_attr = to_mlog_attr(attr); 14552fd3d6fSZach Brown 14652fd3d6fSZach Brown return mlog_mask_show(mlog_attr->mask, buf); 14752fd3d6fSZach Brown } 14852fd3d6fSZach Brown 14952fd3d6fSZach Brown static ssize_t mlog_store(struct kobject *obj, struct attribute *attr, 15052fd3d6fSZach Brown const char *buf, size_t count) 15152fd3d6fSZach Brown { 15252fd3d6fSZach Brown struct mlog_attribute *mlog_attr = to_mlog_attr(attr); 15352fd3d6fSZach Brown 15452fd3d6fSZach Brown return mlog_mask_store(mlog_attr->mask, buf, count); 15552fd3d6fSZach Brown } 15652fd3d6fSZach Brown 15752cf25d0SEmese Revfy static const struct sysfs_ops mlog_attr_ops = { 15852fd3d6fSZach Brown .show = mlog_show, 15952fd3d6fSZach Brown .store = mlog_store, 16052fd3d6fSZach Brown }; 16152fd3d6fSZach Brown 16252fd3d6fSZach Brown static struct kobj_type mlog_ktype = { 16352fd3d6fSZach Brown .default_attrs = mlog_attr_ptrs, 16452fd3d6fSZach Brown .sysfs_ops = &mlog_attr_ops, 16552fd3d6fSZach Brown }; 16652fd3d6fSZach Brown 16752fd3d6fSZach Brown static struct kset mlog_kset = { 16834980ca8SGreg Kroah-Hartman .kobj = {.ktype = &mlog_ktype}, 16952fd3d6fSZach Brown }; 17052fd3d6fSZach Brown 171c60b7178SGreg Kroah-Hartman int mlog_sys_init(struct kset *o2cb_kset) 17252fd3d6fSZach Brown { 17352fd3d6fSZach Brown int i = 0; 17452fd3d6fSZach Brown 17552fd3d6fSZach Brown while (mlog_attrs[i].attr.mode) { 17652fd3d6fSZach Brown mlog_attr_ptrs[i] = &mlog_attrs[i].attr; 17752fd3d6fSZach Brown i++; 17852fd3d6fSZach Brown } 17952fd3d6fSZach Brown mlog_attr_ptrs[i] = NULL; 18052fd3d6fSZach Brown 18134980ca8SGreg Kroah-Hartman kobject_set_name(&mlog_kset.kobj, "logmask"); 182c60b7178SGreg Kroah-Hartman mlog_kset.kobj.kset = o2cb_kset; 18352fd3d6fSZach Brown return kset_register(&mlog_kset); 18452fd3d6fSZach Brown } 18552fd3d6fSZach Brown 18652fd3d6fSZach Brown void mlog_sys_shutdown(void) 18752fd3d6fSZach Brown { 18852fd3d6fSZach Brown kset_unregister(&mlog_kset); 18952fd3d6fSZach Brown } 190