X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Ffld%2Flproc_fld.c;h=e8230ceddaea81e125dd23e5330ef1ea5e497889;hp=c0dfba275cece30aab99a598581c59c9adf7ef68;hb=7a814e94e065551ab79e2ba75df9626e4940efc5;hpb=d2d56f38da01001c92a09afc6b52b5acbd9bc13c diff --git a/lustre/fld/lproc_fld.c b/lustre/fld/lproc_fld.c index c0dfba2..e8230ce 100644 --- a/lustre/fld/lproc_fld.c +++ b/lustre/fld/lproc_fld.c @@ -1,136 +1,129 @@ -/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- - * vim:expandtab:shiftwidth=8:tabstop=8: +/* + * GPL HEADER START * - * lustre/fld/lproc_fld.c - * FLD (FIDs Location Database) + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * - * Copyright (c) 2006 Cluster File Systems, Inc. - * Author: Yury Umanets + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 only, + * as published by the Free Software Foundation. * - * This file is part of the Lustre file system, http://www.lustre.org - * Lustre is a trademark of Cluster File Systems, Inc. + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License version 2 for more details (a copy is included + * in the LICENSE file that accompanied this code). * - * You may have signed or agreed to another license before downloading - * this software. If so, you are bound by the terms and conditions - * of that agreement, and the following does not apply to you. See the - * LICENSE file included with this distribution for more information. + * You should have received a copy of the GNU General Public License + * version 2 along with this program; If not, see + * http://www.gnu.org/licenses/gpl-2.0.html * - * If you did not agree to a different license, then this copy of Lustre - * is open source software; you can redistribute it and/or modify it - * under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. + * GPL HEADER END + */ +/* + * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. + * Use is subject to license terms. + * + * Copyright (c) 2012, 2015, Intel Corporation. + */ +/* + * This file is part of Lustre, http://www.lustre.org/ + * Lustre is a trademark of Sun Microsystems, Inc. + * + * lustre/fld/lproc_fld.c + * + * FLD (FIDs Location Database) * - * In either case, Lustre is distributed in the hope that it will be - * useful, but WITHOUT ANY WARRANTY; without even the implied warranty - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * license text for more details. + * Author: Yury Umanets + * Di Wang */ -#ifndef EXPORT_SYMTAB -# define EXPORT_SYMTAB -#endif #define DEBUG_SUBSYSTEM S_FLD -#ifdef __KERNEL__ -# include -# include -#else /* __KERNEL__ */ -# include -#endif - -#include -#include +#include +#include #include -#include #include -#include #include +#include #include "fld_internal.h" -#ifdef LPROCFS +#ifdef CONFIG_PROC_FS static int -fld_proc_read_targets(char *page, char **start, off_t off, - int count, int *eof, void *data) +fld_proc_targets_seq_show(struct seq_file *m, void *unused) { - struct lu_client_fld *fld = (struct lu_client_fld *)data; + struct lu_client_fld *fld = (struct lu_client_fld *)m->private; struct lu_fld_target *target; - int total = 0, rc; ENTRY; - LASSERT(fld != NULL); + LASSERT(fld != NULL); - spin_lock(&fld->lcf_lock); - list_for_each_entry(target, - &fld->lcf_targets, ft_chain) - { - rc = snprintf(page, count, "%s\n", - fld_target_name(target)); - page += rc; - count -= rc; - total += rc; - if (count == 0) - break; - } - spin_unlock(&fld->lcf_lock); - RETURN(total); + spin_lock(&fld->lcf_lock); + list_for_each_entry(target, &fld->lcf_targets, ft_chain) + seq_printf(m, "%s\n", fld_target_name(target)); + spin_unlock(&fld->lcf_lock); + RETURN(0); } static int -fld_proc_read_hash(char *page, char **start, off_t off, - int count, int *eof, void *data) +fld_proc_hash_seq_show(struct seq_file *m, void *unused) { - struct lu_client_fld *fld = (struct lu_client_fld *)data; - int rc; + struct lu_client_fld *fld = (struct lu_client_fld *)m->private; ENTRY; - LASSERT(fld != NULL); + LASSERT(fld != NULL); - spin_lock(&fld->lcf_lock); - rc = snprintf(page, count, "%s\n", - fld->lcf_hash->fh_name); - spin_unlock(&fld->lcf_lock); + spin_lock(&fld->lcf_lock); + seq_printf(m, "%s\n", fld->lcf_hash->fh_name); + spin_unlock(&fld->lcf_lock); - RETURN(rc); + RETURN(0); } -static int -fld_proc_write_hash(struct file *file, const char *buffer, - unsigned long count, void *data) +static ssize_t +fld_proc_hash_seq_write(struct file *file, const char __user *buffer, + size_t count, loff_t *off) { - struct lu_client_fld *fld = (struct lu_client_fld *)data; - struct lu_fld_hash *hash = NULL; - int i; - ENTRY; + struct lu_client_fld *fld; + struct lu_fld_hash *hash = NULL; + char fh_name[8]; + int i; - LASSERT(fld != NULL); + if (count > sizeof(fh_name)) + return -ENAMETOOLONG; - for (i = 0; fld_hash[i].fh_name != NULL; i++) { - if (count != strlen(fld_hash[i].fh_name)) - continue; - - if (!strncmp(fld_hash[i].fh_name, buffer, count)) { - hash = &fld_hash[i]; - break; - } - } - - if (hash != NULL) { - spin_lock(&fld->lcf_lock); - fld->lcf_hash = hash; - spin_unlock(&fld->lcf_lock); - - CDEBUG(D_INFO, "%s: Changed hash to \"%s\"\n", - fld->lcf_name, hash->fh_name); - } - - RETURN(count); + if (copy_from_user(fh_name, buffer, count) != 0) + return -EFAULT; + + fld = ((struct seq_file *)file->private_data)->private; + LASSERT(fld != NULL); + + for (i = 0; fld_hash[i].fh_name != NULL; i++) { + if (count != strlen(fld_hash[i].fh_name)) + continue; + + if (!strncmp(fld_hash[i].fh_name, fh_name, count)) { + hash = &fld_hash[i]; + break; + } + } + + if (hash != NULL) { + spin_lock(&fld->lcf_lock); + fld->lcf_hash = hash; + spin_unlock(&fld->lcf_lock); + + CDEBUG(D_INFO, "%s: Changed hash to \"%s\"\n", + fld->lcf_name, hash->fh_name); + } + + return count; } -static int -fld_proc_write_cache_flush(struct file *file, const char *buffer, - unsigned long count, void *data) +static ssize_t +lprocfs_cache_flush_seq_write(struct file *file, const char __user *buffer, + size_t count, loff_t *pos) { - struct lu_client_fld *fld = (struct lu_client_fld *)data; + struct lu_client_fld *fld = ((struct seq_file *)file->private_data)->private; ENTRY; LASSERT(fld != NULL); @@ -138,16 +131,241 @@ fld_proc_write_cache_flush(struct file *file, const char *buffer, fld_cache_flush(fld->lcf_cache); CDEBUG(D_INFO, "%s: Lookup cache is flushed\n", fld->lcf_name); - + RETURN(count); } -struct lprocfs_vars fld_server_proc_list[] = { - { NULL }}; +LPROC_SEQ_FOPS_RO(fld_proc_targets); +LPROC_SEQ_FOPS(fld_proc_hash); +LPROC_SEQ_FOPS_WO_TYPE(fld, cache_flush); struct lprocfs_vars fld_client_proc_list[] = { - { "targets", fld_proc_read_targets, NULL, NULL }, - { "hash", fld_proc_read_hash, fld_proc_write_hash, NULL }, - { "cache_flush", NULL, fld_proc_write_cache_flush, NULL }, - { NULL }}; -#endif + { .name = "targets", + .fops = &fld_proc_targets_fops }, + { .name = "hash", + .fops = &fld_proc_hash_fops }, + { .name = "cache_flush", + .fops = &fld_cache_flush_fops }, + { NULL } +}; + +#ifdef HAVE_SERVER_SUPPORT +struct fld_seq_param { + struct lu_env fsp_env; + struct dt_it *fsp_it; + struct lu_server_fld *fsp_fld; + unsigned int fsp_stop:1; +}; + +static void *fldb_seq_start(struct seq_file *p, loff_t *pos) +{ + struct fld_seq_param *param = p->private; + struct lu_server_fld *fld; + struct dt_object *obj; + const struct dt_it_ops *iops; + struct dt_key *key; + int rc; + + if (param == NULL || param->fsp_stop) + return NULL; + + fld = param->fsp_fld; + obj = fld->lsf_obj; + LASSERT(obj != NULL); + iops = &obj->do_index_ops->dio_it; + + rc = iops->load(¶m->fsp_env, param->fsp_it, *pos); + if (rc <= 0) + return NULL; + + key = iops->key(¶m->fsp_env, param->fsp_it); + if (IS_ERR(key)) + return NULL; + + *pos = be64_to_cpu(*(__u64 *)key); + + return param; +} + +static void fldb_seq_stop(struct seq_file *p, void *v) +{ + struct fld_seq_param *param = p->private; + const struct dt_it_ops *iops; + struct lu_server_fld *fld; + struct dt_object *obj; + + if (param == NULL) + return; + + fld = param->fsp_fld; + obj = fld->lsf_obj; + LASSERT(obj != NULL); + iops = &obj->do_index_ops->dio_it; + + iops->put(¶m->fsp_env, param->fsp_it); +} + +static void *fldb_seq_next(struct seq_file *p, void *v, loff_t *pos) +{ + struct fld_seq_param *param = p->private; + struct lu_server_fld *fld; + struct dt_object *obj; + const struct dt_it_ops *iops; + int rc; + + if (param == NULL || param->fsp_stop) + return NULL; + + fld = param->fsp_fld; + obj = fld->lsf_obj; + LASSERT(obj != NULL); + iops = &obj->do_index_ops->dio_it; + + rc = iops->next(¶m->fsp_env, param->fsp_it); + if (rc > 0) { + param->fsp_stop = 1; + return NULL; + } + + *pos = be64_to_cpu(*(__u64 *)iops->key(¶m->fsp_env, param->fsp_it)); + return param; +} + +static int fldb_seq_show(struct seq_file *p, void *v) +{ + struct fld_seq_param *param = p->private; + struct lu_server_fld *fld; + struct dt_object *obj; + const struct dt_it_ops *iops; + struct fld_thread_info *info; + struct lu_seq_range *fld_rec; + int rc; + + if (param == NULL || param->fsp_stop) + return 0; + + fld = param->fsp_fld; + obj = fld->lsf_obj; + LASSERT(obj != NULL); + iops = &obj->do_index_ops->dio_it; + + info = lu_context_key_get(¶m->fsp_env.le_ctx, + &fld_thread_key); + fld_rec = &info->fti_rec; + rc = iops->rec(¶m->fsp_env, param->fsp_it, + (struct dt_rec *)fld_rec, 0); + if (rc != 0) { + CERROR("%s:read record error: rc %d\n", + fld->lsf_name, rc); + } else if (fld_rec->lsr_start != 0) { + range_be_to_cpu(fld_rec, fld_rec); + seq_printf(p, DRANGE"\n", PRANGE(fld_rec)); + } + + return rc; +} + +struct seq_operations fldb_sops = { + .start = fldb_seq_start, + .stop = fldb_seq_stop, + .next = fldb_seq_next, + .show = fldb_seq_show, +}; + +static int fldb_seq_open(struct inode *inode, struct file *file) +{ + struct seq_file *seq; + struct lu_server_fld *fld = (struct lu_server_fld *)PDE_DATA(inode); + struct dt_object *obj; + const struct dt_it_ops *iops; + struct fld_seq_param *param = NULL; + int env_init = 0; + int rc; + + rc = LPROCFS_ENTRY_CHECK(inode); + if (rc < 0) + return rc; + + rc = seq_open(file, &fldb_sops); + if (rc) + GOTO(out, rc); + + obj = fld->lsf_obj; + if (obj == NULL) { + seq = file->private_data; + seq->private = NULL; + return 0; + } + + OBD_ALLOC_PTR(param); + if (param == NULL) + GOTO(out, rc = -ENOMEM); + + rc = lu_env_init(¶m->fsp_env, LCT_MD_THREAD); + if (rc != 0) + GOTO(out, rc); + + env_init = 1; + iops = &obj->do_index_ops->dio_it; + param->fsp_it = iops->init(¶m->fsp_env, obj, 0); + if (IS_ERR(param->fsp_it)) + GOTO(out, rc = PTR_ERR(param->fsp_it)); + + param->fsp_fld = fld; + param->fsp_stop = 0; + + seq = file->private_data; + seq->private = param; +out: + if (rc != 0) { + if (env_init == 1) + lu_env_fini(¶m->fsp_env); + if (param != NULL) + OBD_FREE_PTR(param); + } + return rc; +} + +static int fldb_seq_release(struct inode *inode, struct file *file) +{ + struct seq_file *seq = file->private_data; + struct fld_seq_param *param; + struct lu_server_fld *fld; + struct dt_object *obj; + const struct dt_it_ops *iops; + + param = seq->private; + if (param == NULL) { + lprocfs_seq_release(inode, file); + return 0; + } + + fld = param->fsp_fld; + obj = fld->lsf_obj; + LASSERT(obj != NULL); + iops = &obj->do_index_ops->dio_it; + + LASSERT(iops != NULL); + LASSERT(param->fsp_it != NULL); + iops->fini(¶m->fsp_env, param->fsp_it); + lu_env_fini(¶m->fsp_env); + OBD_FREE_PTR(param); + lprocfs_seq_release(inode, file); + + return 0; +} + +const struct file_operations fld_proc_seq_fops = { + .owner = THIS_MODULE, + .open = fldb_seq_open, + .read = seq_read, + .release = fldb_seq_release, +}; + +struct lprocfs_vars fld_server_proc_list[] = { + { NULL } +}; + +# endif /* HAVE_SERVER_SUPPORT */ + +#endif /* CONFIG_PROC_FS */