585 lines
14 KiB
C
585 lines
14 KiB
C
/*
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* GPL HEADER START
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*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 only,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License version 2 for more details (a copy is included
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* in the LICENSE file that accompanied this code).
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*
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* You should have received a copy of the GNU General Public License
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* version 2 along with this program; If not, see
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* http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*
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* GPL HEADER END
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*/
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/*
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* Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
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* Use is subject to license terms.
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*
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* Copyright (c) 2011, 2015, Intel Corporation.
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*/
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/*
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* This file is part of Lustre, http://www.lustre.org/
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* Lustre is a trademark of Sun Microsystems, Inc.
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*/
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#define DEBUG_SUBSYSTEM S_CLASS
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# include <linux/atomic.h>
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#include "../include/obd_support.h"
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#include "../include/obd_class.h"
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#include "../../include/linux/lnet/lnetctl.h"
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#include "../include/lustre_debug.h"
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#include "../include/lprocfs_status.h"
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#include <linux/list.h>
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#include "../include/cl_object.h"
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#include "llog_internal.h"
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struct obd_device *obd_devs[MAX_OBD_DEVICES];
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EXPORT_SYMBOL(obd_devs);
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struct list_head obd_types;
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DEFINE_RWLOCK(obd_dev_lock);
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/* The following are visible and mutable through /sys/fs/lustre. */
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unsigned int obd_debug_peer_on_timeout;
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EXPORT_SYMBOL(obd_debug_peer_on_timeout);
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unsigned int obd_dump_on_timeout;
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EXPORT_SYMBOL(obd_dump_on_timeout);
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unsigned int obd_dump_on_eviction;
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EXPORT_SYMBOL(obd_dump_on_eviction);
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unsigned int obd_max_dirty_pages = 256;
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EXPORT_SYMBOL(obd_max_dirty_pages);
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atomic_t obd_dirty_pages;
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EXPORT_SYMBOL(obd_dirty_pages);
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unsigned int obd_timeout = OBD_TIMEOUT_DEFAULT; /* seconds */
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EXPORT_SYMBOL(obd_timeout);
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unsigned int obd_timeout_set;
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EXPORT_SYMBOL(obd_timeout_set);
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/* Adaptive timeout defs here instead of ptlrpc module for /sys/fs/ access */
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unsigned int at_min;
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EXPORT_SYMBOL(at_min);
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unsigned int at_max = 600;
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EXPORT_SYMBOL(at_max);
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unsigned int at_history = 600;
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EXPORT_SYMBOL(at_history);
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int at_early_margin = 5;
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EXPORT_SYMBOL(at_early_margin);
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int at_extra = 30;
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EXPORT_SYMBOL(at_extra);
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atomic_t obd_dirty_transit_pages;
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EXPORT_SYMBOL(obd_dirty_transit_pages);
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char obd_jobid_var[JOBSTATS_JOBID_VAR_MAX_LEN + 1] = JOBSTATS_DISABLE;
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EXPORT_SYMBOL(obd_jobid_var);
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char obd_jobid_node[JOBSTATS_JOBID_SIZE + 1];
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/* Get jobid of current process from stored variable or calculate
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* it from pid and user_id.
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*
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* Historically this was also done by reading the environment variable
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* stored in between the "env_start" & "env_end" of task struct.
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* This is now deprecated.
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*/
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int lustre_get_jobid(char *jobid)
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{
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memset(jobid, 0, JOBSTATS_JOBID_SIZE);
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/* Jobstats isn't enabled */
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if (strcmp(obd_jobid_var, JOBSTATS_DISABLE) == 0)
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return 0;
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/* Use process name + fsuid as jobid */
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if (strcmp(obd_jobid_var, JOBSTATS_PROCNAME_UID) == 0) {
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snprintf(jobid, JOBSTATS_JOBID_SIZE, "%s.%u",
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current_comm(),
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from_kuid(&init_user_ns, current_fsuid()));
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return 0;
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}
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/* Whole node dedicated to single job */
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if (strcmp(obd_jobid_var, JOBSTATS_NODELOCAL) == 0) {
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strcpy(jobid, obd_jobid_node);
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return 0;
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}
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return -ENOENT;
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}
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EXPORT_SYMBOL(lustre_get_jobid);
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static inline void obd_data2conn(struct lustre_handle *conn,
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struct obd_ioctl_data *data)
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{
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memset(conn, 0, sizeof(*conn));
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conn->cookie = data->ioc_cookie;
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}
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static inline void obd_conn2data(struct obd_ioctl_data *data,
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struct lustre_handle *conn)
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{
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data->ioc_cookie = conn->cookie;
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}
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static int class_resolve_dev_name(__u32 len, const char *name)
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{
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int rc;
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int dev;
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if (!len || !name) {
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CERROR("No name passed,!\n");
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rc = -EINVAL;
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goto out;
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}
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if (name[len - 1] != 0) {
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CERROR("Name not nul terminated!\n");
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rc = -EINVAL;
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goto out;
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}
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CDEBUG(D_IOCTL, "device name %s\n", name);
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dev = class_name2dev(name);
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if (dev == -1) {
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CDEBUG(D_IOCTL, "No device for name %s!\n", name);
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rc = -EINVAL;
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goto out;
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}
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CDEBUG(D_IOCTL, "device name %s, dev %d\n", name, dev);
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rc = dev;
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out:
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return rc;
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}
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int class_handle_ioctl(unsigned int cmd, unsigned long arg)
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{
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char *buf = NULL;
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struct obd_ioctl_data *data;
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struct libcfs_debug_ioctl_data *debug_data;
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struct obd_device *obd = NULL;
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int err = 0, len = 0;
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/* only for debugging */
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if (cmd == LIBCFS_IOC_DEBUG_MASK) {
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debug_data = (struct libcfs_debug_ioctl_data *)arg;
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libcfs_subsystem_debug = debug_data->subs;
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libcfs_debug = debug_data->debug;
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return 0;
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}
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CDEBUG(D_IOCTL, "cmd = %x\n", cmd);
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if (obd_ioctl_getdata(&buf, &len, (void __user *)arg)) {
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CERROR("OBD ioctl: data error\n");
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return -EINVAL;
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}
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data = (struct obd_ioctl_data *)buf;
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switch (cmd) {
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case OBD_IOC_PROCESS_CFG: {
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struct lustre_cfg *lcfg;
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if (!data->ioc_plen1 || !data->ioc_pbuf1) {
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CERROR("No config buffer passed!\n");
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err = -EINVAL;
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goto out;
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}
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lcfg = kzalloc(data->ioc_plen1, GFP_NOFS);
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if (!lcfg) {
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err = -ENOMEM;
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goto out;
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}
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err = copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1);
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if (!err)
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err = lustre_cfg_sanity_check(lcfg, data->ioc_plen1);
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if (!err)
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err = class_process_config(lcfg);
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kfree(lcfg);
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goto out;
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}
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case OBD_GET_VERSION:
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if (!data->ioc_inlbuf1) {
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CERROR("No buffer passed in ioctl\n");
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err = -EINVAL;
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goto out;
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}
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if (strlen(LUSTRE_VERSION_STRING) + 1 > data->ioc_inllen1) {
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CERROR("ioctl buffer too small to hold version\n");
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err = -EINVAL;
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goto out;
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}
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memcpy(data->ioc_bulk, LUSTRE_VERSION_STRING,
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strlen(LUSTRE_VERSION_STRING) + 1);
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err = obd_ioctl_popdata((void __user *)arg, data, len);
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if (err)
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err = -EFAULT;
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goto out;
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case OBD_IOC_NAME2DEV: {
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/* Resolve a device name. This does not change the
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* currently selected device.
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*/
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int dev;
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dev = class_resolve_dev_name(data->ioc_inllen1,
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data->ioc_inlbuf1);
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data->ioc_dev = dev;
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if (dev < 0) {
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err = -EINVAL;
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goto out;
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}
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err = obd_ioctl_popdata((void __user *)arg, data,
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sizeof(*data));
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if (err)
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err = -EFAULT;
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goto out;
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}
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case OBD_IOC_UUID2DEV: {
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/* Resolve a device uuid. This does not change the
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* currently selected device.
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*/
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int dev;
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struct obd_uuid uuid;
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if (!data->ioc_inllen1 || !data->ioc_inlbuf1) {
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CERROR("No UUID passed!\n");
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err = -EINVAL;
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goto out;
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}
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if (data->ioc_inlbuf1[data->ioc_inllen1 - 1] != 0) {
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CERROR("UUID not NUL terminated!\n");
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err = -EINVAL;
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goto out;
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}
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CDEBUG(D_IOCTL, "device name %s\n", data->ioc_inlbuf1);
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obd_str2uuid(&uuid, data->ioc_inlbuf1);
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dev = class_uuid2dev(&uuid);
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data->ioc_dev = dev;
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if (dev == -1) {
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CDEBUG(D_IOCTL, "No device for UUID %s!\n",
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data->ioc_inlbuf1);
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err = -EINVAL;
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goto out;
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}
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CDEBUG(D_IOCTL, "device name %s, dev %d\n", data->ioc_inlbuf1,
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dev);
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err = obd_ioctl_popdata((void __user *)arg, data,
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sizeof(*data));
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if (err)
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err = -EFAULT;
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goto out;
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}
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case OBD_IOC_CLOSE_UUID: {
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CDEBUG(D_IOCTL, "closing all connections to uuid %s (NOOP)\n",
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data->ioc_inlbuf1);
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err = 0;
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goto out;
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}
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case OBD_IOC_GETDEVICE: {
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int index = data->ioc_count;
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char *status, *str;
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if (!data->ioc_inlbuf1) {
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CERROR("No buffer passed in ioctl\n");
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err = -EINVAL;
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goto out;
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}
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if (data->ioc_inllen1 < 128) {
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CERROR("ioctl buffer too small to hold version\n");
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err = -EINVAL;
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goto out;
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}
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obd = class_num2obd(index);
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if (!obd) {
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err = -ENOENT;
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goto out;
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}
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if (obd->obd_stopping)
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status = "ST";
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else if (obd->obd_set_up)
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status = "UP";
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else if (obd->obd_attached)
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status = "AT";
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else
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status = "--";
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str = (char *)data->ioc_bulk;
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snprintf(str, len - sizeof(*data), "%3d %s %s %s %s %d",
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(int)index, status, obd->obd_type->typ_name,
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obd->obd_name, obd->obd_uuid.uuid,
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atomic_read(&obd->obd_refcount));
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err = obd_ioctl_popdata((void __user *)arg, data, len);
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err = 0;
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goto out;
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}
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}
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if (data->ioc_dev == OBD_DEV_BY_DEVNAME) {
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if (data->ioc_inllen4 <= 0 || !data->ioc_inlbuf4) {
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err = -EINVAL;
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goto out;
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}
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if (strnlen(data->ioc_inlbuf4, MAX_OBD_NAME) >= MAX_OBD_NAME) {
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err = -EINVAL;
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goto out;
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}
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obd = class_name2obd(data->ioc_inlbuf4);
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} else if (data->ioc_dev < class_devno_max()) {
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obd = class_num2obd(data->ioc_dev);
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} else {
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CERROR("OBD ioctl: No device\n");
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err = -EINVAL;
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goto out;
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}
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if (!obd) {
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CERROR("OBD ioctl : No Device %d\n", data->ioc_dev);
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err = -EINVAL;
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goto out;
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}
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LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
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if (!obd->obd_set_up || obd->obd_stopping) {
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CERROR("OBD ioctl: device not setup %d\n", data->ioc_dev);
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err = -EINVAL;
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goto out;
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}
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switch (cmd) {
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case OBD_IOC_NO_TRANSNO: {
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if (!obd->obd_attached) {
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CERROR("Device %d not attached\n", obd->obd_minor);
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err = -ENODEV;
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goto out;
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}
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CDEBUG(D_HA, "%s: disabling committed-transno notification\n",
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obd->obd_name);
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obd->obd_no_transno = 1;
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err = 0;
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goto out;
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}
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default: {
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err = obd_iocontrol(cmd, obd->obd_self_export, len, data, NULL);
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if (err)
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goto out;
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err = obd_ioctl_popdata((void __user *)arg, data, len);
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if (err)
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err = -EFAULT;
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goto out;
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}
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}
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out:
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if (buf)
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obd_ioctl_freedata(buf, len);
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return err;
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} /* class_handle_ioctl */
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#define OBD_INIT_CHECK
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static int obd_init_checks(void)
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{
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__u64 u64val, div64val;
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char buf[64];
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int len, ret = 0;
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CDEBUG(D_INFO, "LPU64=%s, LPD64=%s, LPX64=%s\n", "%llu", "%lld", "%#llx");
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CDEBUG(D_INFO, "OBD_OBJECT_EOF = %#llx\n", (__u64)OBD_OBJECT_EOF);
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u64val = OBD_OBJECT_EOF;
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CDEBUG(D_INFO, "u64val OBD_OBJECT_EOF = %#llx\n", u64val);
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if (u64val != OBD_OBJECT_EOF) {
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CERROR("__u64 %#llx(%d) != 0xffffffffffffffff\n",
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u64val, (int)sizeof(u64val));
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ret = -EINVAL;
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}
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len = snprintf(buf, sizeof(buf), "%#llx", u64val);
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if (len != 18) {
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CWARN("LPX64 wrong length! strlen(%s)=%d != 18\n", buf, len);
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ret = -EINVAL;
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}
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div64val = OBD_OBJECT_EOF;
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CDEBUG(D_INFO, "u64val OBD_OBJECT_EOF = %#llx\n", u64val);
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if (u64val != OBD_OBJECT_EOF) {
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CERROR("__u64 %#llx(%d) != 0xffffffffffffffff\n",
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u64val, (int)sizeof(u64val));
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ret = -EOVERFLOW;
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}
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if (u64val >> 8 != OBD_OBJECT_EOF >> 8) {
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CERROR("__u64 %#llx(%d) != 0xffffffffffffffff\n",
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u64val, (int)sizeof(u64val));
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return -EOVERFLOW;
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}
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if (do_div(div64val, 256) != (u64val & 255)) {
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CERROR("do_div(%#llx,256) != %llu\n", u64val, u64val & 255);
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return -EOVERFLOW;
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}
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if (u64val >> 8 != div64val) {
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CERROR("do_div(%#llx,256) %llu != %llu\n",
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u64val, div64val, u64val >> 8);
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return -EOVERFLOW;
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}
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len = snprintf(buf, sizeof(buf), "%#llx", u64val);
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if (len != 18) {
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CWARN("LPX64 wrong length! strlen(%s)=%d != 18\n", buf, len);
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ret = -EINVAL;
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}
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len = snprintf(buf, sizeof(buf), "%llu", u64val);
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if (len != 20) {
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CWARN("LPU64 wrong length! strlen(%s)=%d != 20\n", buf, len);
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ret = -EINVAL;
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}
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len = snprintf(buf, sizeof(buf), "%lld", u64val);
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if (len != 2) {
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CWARN("LPD64 wrong length! strlen(%s)=%d != 2\n", buf, len);
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ret = -EINVAL;
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}
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if ((u64val & ~CFS_PAGE_MASK) >= PAGE_SIZE) {
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CWARN("mask failed: u64val %llu >= %llu\n", u64val,
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(__u64)PAGE_SIZE);
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ret = -EINVAL;
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}
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return ret;
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}
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extern int class_procfs_init(void);
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extern int class_procfs_clean(void);
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static int __init obdclass_init(void)
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{
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int i, err;
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int lustre_register_fs(void);
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LCONSOLE_INFO("Lustre: Build Version: " LUSTRE_VERSION_STRING "\n");
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spin_lock_init(&obd_types_lock);
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obd_zombie_impexp_init();
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err = obd_init_checks();
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if (err == -EOVERFLOW)
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return err;
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class_init_uuidlist();
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err = class_handle_init();
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if (err)
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return err;
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INIT_LIST_HEAD(&obd_types);
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err = misc_register(&obd_psdev);
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if (err) {
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CERROR("cannot register %d err %d\n", OBD_DEV_MINOR, err);
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return err;
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}
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/* This struct is already zeroed for us (static global) */
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|
for (i = 0; i < class_devno_max(); i++)
|
|
obd_devs[i] = NULL;
|
|
|
|
/* Default the dirty page cache cap to 1/2 of system memory.
|
|
* For clients with less memory, a larger fraction is needed
|
|
* for other purposes (mostly for BGL).
|
|
*/
|
|
if (totalram_pages <= 512 << (20 - PAGE_SHIFT))
|
|
obd_max_dirty_pages = totalram_pages / 4;
|
|
else
|
|
obd_max_dirty_pages = totalram_pages / 2;
|
|
|
|
err = obd_init_caches();
|
|
if (err)
|
|
return err;
|
|
|
|
err = class_procfs_init();
|
|
if (err)
|
|
return err;
|
|
|
|
err = obd_sysctl_init();
|
|
if (err)
|
|
return err;
|
|
|
|
err = lu_global_init();
|
|
if (err)
|
|
return err;
|
|
|
|
err = cl_global_init();
|
|
if (err != 0)
|
|
return err;
|
|
|
|
err = llog_info_init();
|
|
if (err)
|
|
return err;
|
|
|
|
err = lustre_register_fs();
|
|
|
|
return err;
|
|
}
|
|
|
|
static void obdclass_exit(void)
|
|
{
|
|
int i;
|
|
|
|
int lustre_unregister_fs(void);
|
|
|
|
lustre_unregister_fs();
|
|
|
|
misc_deregister(&obd_psdev);
|
|
for (i = 0; i < class_devno_max(); i++) {
|
|
struct obd_device *obd = class_num2obd(i);
|
|
|
|
if (obd && obd->obd_set_up &&
|
|
OBT(obd) && OBP(obd, detach)) {
|
|
/* XXX should this call generic detach otherwise? */
|
|
LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
|
|
OBP(obd, detach)(obd);
|
|
}
|
|
}
|
|
llog_info_fini();
|
|
cl_global_fini();
|
|
lu_global_fini();
|
|
|
|
obd_cleanup_caches();
|
|
|
|
class_procfs_clean();
|
|
|
|
class_handle_cleanup();
|
|
class_exit_uuidlist();
|
|
obd_zombie_impexp_stop();
|
|
}
|
|
|
|
MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
|
|
MODULE_DESCRIPTION("Lustre Class Driver");
|
|
MODULE_VERSION(LUSTRE_VERSION_STRING);
|
|
MODULE_LICENSE("GPL");
|
|
|
|
module_init(obdclass_init);
|
|
module_exit(obdclass_exit);
|