diff options
Diffstat (limited to 'drivers/staging/lustre/lustre/obdclass/class_obd.c')
| -rw-r--r-- | drivers/staging/lustre/lustre/obdclass/class_obd.c | 535 |
1 files changed, 0 insertions, 535 deletions
diff --git a/drivers/staging/lustre/lustre/obdclass/class_obd.c b/drivers/staging/lustre/lustre/obdclass/class_obd.c deleted file mode 100644 index 3e24b76f6301..000000000000 --- a/drivers/staging/lustre/lustre/obdclass/class_obd.c +++ /dev/null @@ -1,535 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * GPL HEADER START - * - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. - * - * 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 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 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 - * - * GPL HEADER END - */ -/* - * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. - * Use is subject to license terms. - * - * Copyright (c) 2011, 2015, Intel Corporation. - */ -/* - * This file is part of Lustre, http://www.lustre.org/ - * Lustre is a trademark of Sun Microsystems, Inc. - */ - -#define DEBUG_SUBSYSTEM S_CLASS -# include <linux/atomic.h> - -#include <obd_support.h> -#include <obd_class.h> -#include <uapi/linux/lnet/lnetctl.h> -#include <lustre_debug.h> -#include <lprocfs_status.h> -#include <linux/list.h> -#include <cl_object.h> -#include <uapi/linux/lustre/lustre_ioctl.h> -#include "llog_internal.h" - -struct obd_device *obd_devs[MAX_OBD_DEVICES]; -struct list_head obd_types; -DEFINE_RWLOCK(obd_dev_lock); - -/* The following are visible and mutable through /sys/fs/lustre. */ -unsigned int obd_debug_peer_on_timeout; -EXPORT_SYMBOL(obd_debug_peer_on_timeout); -unsigned int obd_dump_on_timeout; -EXPORT_SYMBOL(obd_dump_on_timeout); -unsigned int obd_dump_on_eviction; -EXPORT_SYMBOL(obd_dump_on_eviction); -unsigned long obd_max_dirty_pages; -EXPORT_SYMBOL(obd_max_dirty_pages); -atomic_long_t obd_dirty_pages; -EXPORT_SYMBOL(obd_dirty_pages); -unsigned int obd_timeout = OBD_TIMEOUT_DEFAULT; /* seconds */ -EXPORT_SYMBOL(obd_timeout); -unsigned int obd_timeout_set; -EXPORT_SYMBOL(obd_timeout_set); -/* Adaptive timeout defs here instead of ptlrpc module for /sys/fs/ access */ -unsigned int at_min; -EXPORT_SYMBOL(at_min); -unsigned int at_max = 600; -EXPORT_SYMBOL(at_max); -unsigned int at_history = 600; -EXPORT_SYMBOL(at_history); -int at_early_margin = 5; -EXPORT_SYMBOL(at_early_margin); -int at_extra = 30; -EXPORT_SYMBOL(at_extra); - -atomic_long_t obd_dirty_transit_pages; -EXPORT_SYMBOL(obd_dirty_transit_pages); - -char obd_jobid_var[JOBSTATS_JOBID_VAR_MAX_LEN + 1] = JOBSTATS_DISABLE; -char obd_jobid_node[LUSTRE_JOBID_SIZE + 1]; - -/* Get jobid of current process from stored variable or calculate - * it from pid and user_id. - * - * Historically this was also done by reading the environment variable - * stored in between the "env_start" & "env_end" of task struct. - * This is now deprecated. - */ -int lustre_get_jobid(char *jobid) -{ - memset(jobid, 0, LUSTRE_JOBID_SIZE); - /* Jobstats isn't enabled */ - if (strcmp(obd_jobid_var, JOBSTATS_DISABLE) == 0) - return 0; - - /* Use process name + fsuid as jobid */ - if (strcmp(obd_jobid_var, JOBSTATS_PROCNAME_UID) == 0) { - snprintf(jobid, LUSTRE_JOBID_SIZE, "%s.%u", - current_comm(), - from_kuid(&init_user_ns, current_fsuid())); - return 0; - } - - /* Whole node dedicated to single job */ - if (strcmp(obd_jobid_var, JOBSTATS_NODELOCAL) == 0) { - strcpy(jobid, obd_jobid_node); - return 0; - } - - return -ENOENT; -} -EXPORT_SYMBOL(lustre_get_jobid); - -static int class_resolve_dev_name(__u32 len, const char *name) -{ - int rc; - int dev; - - if (!len || !name) { - CERROR("No name passed,!\n"); - rc = -EINVAL; - goto out; - } - if (name[len - 1] != 0) { - CERROR("Name not nul terminated!\n"); - rc = -EINVAL; - goto out; - } - - CDEBUG(D_IOCTL, "device name %s\n", name); - dev = class_name2dev(name); - if (dev == -1) { - CDEBUG(D_IOCTL, "No device for name %s!\n", name); - rc = -EINVAL; - goto out; - } - - CDEBUG(D_IOCTL, "device name %s, dev %d\n", name, dev); - rc = dev; - -out: - return rc; -} - -int class_handle_ioctl(unsigned int cmd, unsigned long arg) -{ - char *buf = NULL; - struct obd_ioctl_data *data; - struct libcfs_debug_ioctl_data *debug_data; - struct obd_device *obd = NULL; - int err = 0, len = 0; - - /* only for debugging */ - if (cmd == LIBCFS_IOC_DEBUG_MASK) { - debug_data = (struct libcfs_debug_ioctl_data *)arg; - libcfs_subsystem_debug = debug_data->subs; - libcfs_debug = debug_data->debug; - return 0; - } - - CDEBUG(D_IOCTL, "cmd = %x\n", cmd); - if (obd_ioctl_getdata(&buf, &len, (void __user *)arg)) { - CERROR("OBD ioctl: data error\n"); - return -EINVAL; - } - data = (struct obd_ioctl_data *)buf; - - switch (cmd) { - case OBD_IOC_PROCESS_CFG: { - struct lustre_cfg *lcfg; - - if (!data->ioc_plen1 || !data->ioc_pbuf1) { - CERROR("No config buffer passed!\n"); - err = -EINVAL; - goto out; - } - lcfg = kzalloc(data->ioc_plen1, GFP_NOFS); - if (!lcfg) { - err = -ENOMEM; - goto out; - } - if (copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1)) - err = -EFAULT; - if (!err) - err = lustre_cfg_sanity_check(lcfg, data->ioc_plen1); - if (!err) - err = class_process_config(lcfg); - - kfree(lcfg); - goto out; - } - - case OBD_GET_VERSION: - if (!data->ioc_inlbuf1) { - CERROR("No buffer passed in ioctl\n"); - err = -EINVAL; - goto out; - } - - if (strlen(LUSTRE_VERSION_STRING) + 1 > data->ioc_inllen1) { - CERROR("ioctl buffer too small to hold version\n"); - err = -EINVAL; - goto out; - } - - memcpy(data->ioc_bulk, LUSTRE_VERSION_STRING, - strlen(LUSTRE_VERSION_STRING) + 1); - - if (copy_to_user((void __user *)arg, data, len)) - err = -EFAULT; - goto out; - - case OBD_IOC_NAME2DEV: { - /* Resolve a device name. This does not change the - * currently selected device. - */ - int dev; - - dev = class_resolve_dev_name(data->ioc_inllen1, - data->ioc_inlbuf1); - data->ioc_dev = dev; - if (dev < 0) { - err = -EINVAL; - goto out; - } - - if (copy_to_user((void __user *)arg, data, sizeof(*data))) - err = -EFAULT; - goto out; - } - - case OBD_IOC_UUID2DEV: { - /* Resolve a device uuid. This does not change the - * currently selected device. - */ - int dev; - struct obd_uuid uuid; - - if (!data->ioc_inllen1 || !data->ioc_inlbuf1) { - CERROR("No UUID passed!\n"); - err = -EINVAL; - goto out; - } - if (data->ioc_inlbuf1[data->ioc_inllen1 - 1] != 0) { - CERROR("UUID not NUL terminated!\n"); - err = -EINVAL; - goto out; - } - - CDEBUG(D_IOCTL, "device name %s\n", data->ioc_inlbuf1); - obd_str2uuid(&uuid, data->ioc_inlbuf1); - dev = class_uuid2dev(&uuid); - data->ioc_dev = dev; - if (dev == -1) { - CDEBUG(D_IOCTL, "No device for UUID %s!\n", - data->ioc_inlbuf1); - err = -EINVAL; - goto out; - } - - CDEBUG(D_IOCTL, "device name %s, dev %d\n", data->ioc_inlbuf1, - dev); - - if (copy_to_user((void __user *)arg, data, sizeof(*data))) - err = -EFAULT; - goto out; - } - - case OBD_IOC_GETDEVICE: { - int index = data->ioc_count; - char *status, *str; - - if (!data->ioc_inlbuf1) { - CERROR("No buffer passed in ioctl\n"); - err = -EINVAL; - goto out; - } - if (data->ioc_inllen1 < 128) { - CERROR("ioctl buffer too small to hold version\n"); - err = -EINVAL; - goto out; - } - - obd = class_num2obd(index); - if (!obd) { - err = -ENOENT; - goto out; - } - - if (obd->obd_stopping) - status = "ST"; - else if (obd->obd_set_up) - status = "UP"; - else if (obd->obd_attached) - status = "AT"; - else - status = "--"; - str = (char *)data->ioc_bulk; - snprintf(str, len - sizeof(*data), "%3d %s %s %s %s %d", - (int)index, status, obd->obd_type->typ_name, - obd->obd_name, obd->obd_uuid.uuid, - atomic_read(&obd->obd_refcount)); - - if (copy_to_user((void __user *)arg, data, len)) - err = -EFAULT; - goto out; - } - } - - if (data->ioc_dev == OBD_DEV_BY_DEVNAME) { - if (data->ioc_inllen4 <= 0 || !data->ioc_inlbuf4) { - err = -EINVAL; - goto out; - } - if (strnlen(data->ioc_inlbuf4, MAX_OBD_NAME) >= MAX_OBD_NAME) { - err = -EINVAL; - goto out; - } - obd = class_name2obd(data->ioc_inlbuf4); - } else if (data->ioc_dev < class_devno_max()) { - obd = class_num2obd(data->ioc_dev); - } else { - CERROR("OBD ioctl: No device\n"); - err = -EINVAL; - goto out; - } - - if (!obd) { - CERROR("OBD ioctl : No Device %d\n", data->ioc_dev); - err = -EINVAL; - goto out; - } - LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC); - - if (!obd->obd_set_up || obd->obd_stopping) { - CERROR("OBD ioctl: device not setup %d\n", data->ioc_dev); - err = -EINVAL; - goto out; - } - - switch (cmd) { - case OBD_IOC_NO_TRANSNO: { - if (!obd->obd_attached) { - CERROR("Device %d not attached\n", obd->obd_minor); - err = -ENODEV; - goto out; - } - CDEBUG(D_HA, "%s: disabling committed-transno notification\n", - obd->obd_name); - obd->obd_no_transno = 1; - err = 0; - goto out; - } - - default: { - err = obd_iocontrol(cmd, obd->obd_self_export, len, data, NULL); - if (err) - goto out; - - if (copy_to_user((void __user *)arg, data, len)) - err = -EFAULT; - goto out; - } - } - - out: - kvfree(buf); - return err; -} /* class_handle_ioctl */ - -#define OBD_INIT_CHECK -static int obd_init_checks(void) -{ - __u64 u64val, div64val; - char buf[64]; - int len, ret = 0; - - CDEBUG(D_INFO, "LPU64=%s, LPD64=%s, LPX64=%s\n", "%llu", "%lld", - "%#llx"); - - CDEBUG(D_INFO, "OBD_OBJECT_EOF = %#llx\n", (__u64)OBD_OBJECT_EOF); - - u64val = OBD_OBJECT_EOF; - CDEBUG(D_INFO, "u64val OBD_OBJECT_EOF = %#llx\n", u64val); - if (u64val != OBD_OBJECT_EOF) { - CERROR("__u64 %#llx(%d) != 0xffffffffffffffff\n", - u64val, (int)sizeof(u64val)); - ret = -EINVAL; - } - len = snprintf(buf, sizeof(buf), "%#llx", u64val); - if (len != 18) { - CWARN("LPX64 wrong length! strlen(%s)=%d != 18\n", buf, len); - ret = -EINVAL; - } - - div64val = OBD_OBJECT_EOF; - CDEBUG(D_INFO, "u64val OBD_OBJECT_EOF = %#llx\n", u64val); - if (u64val != OBD_OBJECT_EOF) { - CERROR("__u64 %#llx(%d) != 0xffffffffffffffff\n", - u64val, (int)sizeof(u64val)); - ret = -EOVERFLOW; - } - if (u64val >> 8 != OBD_OBJECT_EOF >> 8) { - CERROR("__u64 %#llx(%d) != 0xffffffffffffffff\n", - u64val, (int)sizeof(u64val)); - return -EOVERFLOW; - } - if (do_div(div64val, 256) != (u64val & 255)) { - CERROR("do_div(%#llx,256) != %llu\n", u64val, u64val & 255); - return -EOVERFLOW; - } - if (u64val >> 8 != div64val) { - CERROR("do_div(%#llx,256) %llu != %llu\n", - u64val, div64val, u64val >> 8); - return -EOVERFLOW; - } - len = snprintf(buf, sizeof(buf), "%#llx", u64val); - if (len != 18) { - CWARN("LPX64 wrong length! strlen(%s)=%d != 18\n", buf, len); - ret = -EINVAL; - } - len = snprintf(buf, sizeof(buf), "%llu", u64val); - if (len != 20) { - CWARN("LPU64 wrong length! strlen(%s)=%d != 20\n", buf, len); - ret = -EINVAL; - } - len = snprintf(buf, sizeof(buf), "%lld", u64val); - if (len != 2) { - CWARN("LPD64 wrong length! strlen(%s)=%d != 2\n", buf, len); - ret = -EINVAL; - } - if ((u64val & ~PAGE_MASK) >= PAGE_SIZE) { - CWARN("mask failed: u64val %llu >= %llu\n", u64val, - (__u64)PAGE_SIZE); - ret = -EINVAL; - } - - return ret; -} - -static int __init obdclass_init(void) -{ - int i, err; - - LCONSOLE_INFO("Lustre: Build Version: " LUSTRE_VERSION_STRING "\n"); - - spin_lock_init(&obd_types_lock); - obd_zombie_impexp_init(); - - err = obd_init_checks(); - if (err) - return err; - - class_init_uuidlist(); - err = class_handle_init(); - if (err) - return err; - - INIT_LIST_HEAD(&obd_types); - - err = misc_register(&obd_psdev); - if (err) { - CERROR("cannot register %d err %d\n", OBD_DEV_MINOR, err); - return err; - } - - /* This struct is already zeroed for us (static global) */ - 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) -{ - lustre_unregister_fs(); - - misc_deregister(&obd_psdev); - 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); |