diff options
Diffstat (limited to 'drivers/staging/lustre/lustre/llite/llite_lib.c')
| -rw-r--r-- | drivers/staging/lustre/lustre/llite/llite_lib.c | 2668 |
1 files changed, 0 insertions, 2668 deletions
diff --git a/drivers/staging/lustre/lustre/llite/llite_lib.c b/drivers/staging/lustre/lustre/llite/llite_lib.c deleted file mode 100644 index 36066c839160..000000000000 --- a/drivers/staging/lustre/lustre/llite/llite_lib.c +++ /dev/null @@ -1,2668 +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) 2003, 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. - * - * lustre/llite/llite_lib.c - * - * Lustre Light Super operations - */ - -#define DEBUG_SUBSYSTEM S_LLITE - -#include <linux/module.h> -#include <linux/statfs.h> -#include <linux/types.h> -#include <linux/mm.h> -#include <linux/random.h> - -#include <uapi/linux/lustre/lustre_ioctl.h> -#include <lustre_ha.h> -#include <lustre_dlm.h> -#include <lprocfs_status.h> -#include <lustre_disk.h> -#include <uapi/linux/lustre/lustre_param.h> -#include <lustre_log.h> -#include <cl_object.h> -#include <obd_cksum.h> -#include "llite_internal.h" - -struct kmem_cache *ll_file_data_slab; -struct dentry *llite_root; -struct kset *llite_kset; - -#ifndef log2 -#define log2(n) ffz(~(n)) -#endif - -static struct ll_sb_info *ll_init_sbi(struct super_block *sb) -{ - struct ll_sb_info *sbi = NULL; - unsigned long pages; - unsigned long lru_page_max; - struct sysinfo si; - class_uuid_t uuid; - int i; - - sbi = kzalloc(sizeof(*sbi), GFP_NOFS); - if (!sbi) - return NULL; - - spin_lock_init(&sbi->ll_lock); - mutex_init(&sbi->ll_lco.lco_lock); - spin_lock_init(&sbi->ll_pp_extent_lock); - spin_lock_init(&sbi->ll_process_lock); - sbi->ll_rw_stats_on = 0; - - si_meminfo(&si); - pages = si.totalram - si.totalhigh; - lru_page_max = pages / 2; - - sbi->ll_cache = cl_cache_init(lru_page_max); - if (!sbi->ll_cache) { - kfree(sbi); - return NULL; - } - - sbi->ll_ra_info.ra_max_pages_per_file = min(pages / 32, - SBI_DEFAULT_READAHEAD_MAX); - sbi->ll_ra_info.ra_max_pages = sbi->ll_ra_info.ra_max_pages_per_file; - sbi->ll_ra_info.ra_max_read_ahead_whole_pages = - SBI_DEFAULT_READAHEAD_WHOLE_MAX; - - ll_generate_random_uuid(uuid); - class_uuid_unparse(uuid, &sbi->ll_sb_uuid); - CDEBUG(D_CONFIG, "generated uuid: %s\n", sbi->ll_sb_uuid.uuid); - - sbi->ll_flags |= LL_SBI_VERBOSE; - sbi->ll_flags |= LL_SBI_CHECKSUM; - - sbi->ll_flags |= LL_SBI_LRU_RESIZE; - sbi->ll_flags |= LL_SBI_LAZYSTATFS; - - for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) { - spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i]. - pp_r_hist.oh_lock); - spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i]. - pp_w_hist.oh_lock); - } - - /* metadata statahead is enabled by default */ - sbi->ll_sa_max = LL_SA_RPC_DEF; - atomic_set(&sbi->ll_sa_total, 0); - atomic_set(&sbi->ll_sa_wrong, 0); - atomic_set(&sbi->ll_sa_running, 0); - atomic_set(&sbi->ll_agl_total, 0); - sbi->ll_flags |= LL_SBI_AGL_ENABLED; - - /* root squash */ - sbi->ll_squash.rsi_uid = 0; - sbi->ll_squash.rsi_gid = 0; - INIT_LIST_HEAD(&sbi->ll_squash.rsi_nosquash_nids); - init_rwsem(&sbi->ll_squash.rsi_sem); - - sbi->ll_sb = sb; - - return sbi; -} - -static void ll_free_sbi(struct super_block *sb) -{ - struct ll_sb_info *sbi = ll_s2sbi(sb); - - if (sbi->ll_cache) { - if (!list_empty(&sbi->ll_squash.rsi_nosquash_nids)) - cfs_free_nidlist(&sbi->ll_squash.rsi_nosquash_nids); - cl_cache_decref(sbi->ll_cache); - sbi->ll_cache = NULL; - } - - kfree(sbi); -} - -static int client_common_fill_super(struct super_block *sb, char *md, char *dt) -{ - struct inode *root = NULL; - struct ll_sb_info *sbi = ll_s2sbi(sb); - struct obd_device *obd; - struct obd_statfs *osfs = NULL; - struct ptlrpc_request *request = NULL; - struct obd_connect_data *data = NULL; - struct obd_uuid *uuid; - struct md_op_data *op_data; - struct lustre_md lmd; - u64 valid; - int size, err, checksum; - - obd = class_name2obd(md); - if (!obd) { - CERROR("MD %s: not setup or attached\n", md); - return -EINVAL; - } - - data = kzalloc(sizeof(*data), GFP_NOFS); - if (!data) - return -ENOMEM; - - osfs = kzalloc(sizeof(*osfs), GFP_NOFS); - if (!osfs) { - kfree(data); - return -ENOMEM; - } - - /* indicate the features supported by this client */ - data->ocd_connect_flags = OBD_CONNECT_IBITS | OBD_CONNECT_NODEVOH | - OBD_CONNECT_ATTRFID | - OBD_CONNECT_VERSION | OBD_CONNECT_BRW_SIZE | - OBD_CONNECT_CANCELSET | OBD_CONNECT_FID | - OBD_CONNECT_AT | OBD_CONNECT_LOV_V3 | - OBD_CONNECT_VBR | OBD_CONNECT_FULL20 | - OBD_CONNECT_64BITHASH | - OBD_CONNECT_EINPROGRESS | - OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE | - OBD_CONNECT_LAYOUTLOCK | - OBD_CONNECT_PINGLESS | - OBD_CONNECT_MAX_EASIZE | - OBD_CONNECT_FLOCK_DEAD | - OBD_CONNECT_DISP_STRIPE | OBD_CONNECT_LFSCK | - OBD_CONNECT_OPEN_BY_FID | - OBD_CONNECT_DIR_STRIPE | - OBD_CONNECT_BULK_MBITS; - - if (sbi->ll_flags & LL_SBI_LRU_RESIZE) - data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE; -#ifdef CONFIG_FS_POSIX_ACL - data->ocd_connect_flags |= OBD_CONNECT_ACL | OBD_CONNECT_UMASK | - OBD_CONNECT_LARGE_ACL; -#endif - - if (OBD_FAIL_CHECK(OBD_FAIL_MDC_LIGHTWEIGHT)) - /* flag mdc connection as lightweight, only used for test - * purpose, use with care - */ - data->ocd_connect_flags |= OBD_CONNECT_LIGHTWEIGHT; - - data->ocd_ibits_known = MDS_INODELOCK_FULL; - data->ocd_version = LUSTRE_VERSION_CODE; - - if (sb_rdonly(sb)) - data->ocd_connect_flags |= OBD_CONNECT_RDONLY; - if (sbi->ll_flags & LL_SBI_USER_XATTR) - data->ocd_connect_flags |= OBD_CONNECT_XATTR; - - if (sbi->ll_flags & LL_SBI_FLOCK) - sbi->ll_fop = &ll_file_operations_flock; - else if (sbi->ll_flags & LL_SBI_LOCALFLOCK) - sbi->ll_fop = &ll_file_operations; - else - sbi->ll_fop = &ll_file_operations_noflock; - - /* always ping even if server suppress_pings */ - if (sbi->ll_flags & LL_SBI_ALWAYS_PING) - data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS; - - data->ocd_brw_size = MD_MAX_BRW_SIZE; - - err = obd_connect(NULL, &sbi->ll_md_exp, obd, &sbi->ll_sb_uuid, - data, NULL); - if (err == -EBUSY) { - LCONSOLE_ERROR_MSG(0x14f, - "An MDT (md %s) is performing recovery, of which this client is not a part. Please wait for recovery to complete, abort, or time out.\n", - md); - goto out; - } - - if (err) { - CERROR("cannot connect to %s: rc = %d\n", md, err); - goto out; - } - - sbi->ll_md_exp->exp_connect_data = *data; - - err = obd_fid_init(sbi->ll_md_exp->exp_obd, sbi->ll_md_exp, - LUSTRE_SEQ_METADATA); - if (err) { - CERROR("%s: Can't init metadata layer FID infrastructure, rc = %d\n", - sbi->ll_md_exp->exp_obd->obd_name, err); - goto out_md; - } - - /* For mount, we only need fs info from MDT0, and also in DNE, it - * can make sure the client can be mounted as long as MDT0 is - * available - */ - err = obd_statfs(NULL, sbi->ll_md_exp, osfs, - get_jiffies_64() - OBD_STATFS_CACHE_SECONDS * HZ, - OBD_STATFS_FOR_MDT0); - if (err) - goto out_md_fid; - - /* This needs to be after statfs to ensure connect has finished. - * Note that "data" does NOT contain the valid connect reply. - * If connecting to a 1.8 server there will be no LMV device, so - * we can access the MDC export directly and exp_connect_flags will - * be non-zero, but if accessing an upgraded 2.1 server it will - * have the correct flags filled in. - * XXX: fill in the LMV exp_connect_flags from MDC(s). - */ - valid = exp_connect_flags(sbi->ll_md_exp) & CLIENT_CONNECT_MDT_REQD; - if (exp_connect_flags(sbi->ll_md_exp) != 0 && - valid != CLIENT_CONNECT_MDT_REQD) { - char *buf; - - buf = kzalloc(PAGE_SIZE, GFP_KERNEL); - if (!buf) { - err = -ENOMEM; - goto out_md_fid; - } - obd_connect_flags2str(buf, PAGE_SIZE, - valid ^ CLIENT_CONNECT_MDT_REQD, ","); - LCONSOLE_ERROR_MSG(0x170, - "Server %s does not support feature(s) needed for correct operation of this client (%s). Please upgrade server or downgrade client.\n", - sbi->ll_md_exp->exp_obd->obd_name, buf); - kfree(buf); - err = -EPROTO; - goto out_md_fid; - } - - size = sizeof(*data); - err = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_CONN_DATA), - KEY_CONN_DATA, &size, data); - if (err) { - CERROR("%s: Get connect data failed: rc = %d\n", - sbi->ll_md_exp->exp_obd->obd_name, err); - goto out_md_fid; - } - - LASSERT(osfs->os_bsize); - sb->s_blocksize = osfs->os_bsize; - sb->s_blocksize_bits = log2(osfs->os_bsize); - sb->s_magic = LL_SUPER_MAGIC; - sb->s_maxbytes = MAX_LFS_FILESIZE; - sbi->ll_namelen = osfs->os_namelen; - sbi->ll_mnt.mnt = current->fs->root.mnt; - - if ((sbi->ll_flags & LL_SBI_USER_XATTR) && - !(data->ocd_connect_flags & OBD_CONNECT_XATTR)) { - LCONSOLE_INFO("Disabling user_xattr feature because it is not supported on the server\n"); - sbi->ll_flags &= ~LL_SBI_USER_XATTR; - } - - if (data->ocd_connect_flags & OBD_CONNECT_ACL) { - sb->s_flags |= SB_POSIXACL; - sbi->ll_flags |= LL_SBI_ACL; - } else { - LCONSOLE_INFO("client wants to enable acl, but mdt not!\n"); - sb->s_flags &= ~SB_POSIXACL; - sbi->ll_flags &= ~LL_SBI_ACL; - } - - if (data->ocd_connect_flags & OBD_CONNECT_64BITHASH) - sbi->ll_flags |= LL_SBI_64BIT_HASH; - - if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE) - sbi->ll_md_brw_pages = data->ocd_brw_size >> PAGE_SHIFT; - else - sbi->ll_md_brw_pages = 1; - - if (data->ocd_connect_flags & OBD_CONNECT_LAYOUTLOCK) - sbi->ll_flags |= LL_SBI_LAYOUT_LOCK; - - if (data->ocd_ibits_known & MDS_INODELOCK_XATTR) { - if (!(data->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)) { - LCONSOLE_INFO( - "%s: disabling xattr cache due to unknown maximum xattr size.\n", - dt); - } else { - sbi->ll_flags |= LL_SBI_XATTR_CACHE; - sbi->ll_xattr_cache_enabled = 1; - } - } - - obd = class_name2obd(dt); - if (!obd) { - CERROR("DT %s: not setup or attached\n", dt); - err = -ENODEV; - goto out_md_fid; - } - - data->ocd_connect_flags = OBD_CONNECT_GRANT | OBD_CONNECT_VERSION | - OBD_CONNECT_REQPORTAL | OBD_CONNECT_BRW_SIZE | - OBD_CONNECT_CANCELSET | OBD_CONNECT_FID | - OBD_CONNECT_SRVLOCK | OBD_CONNECT_TRUNCLOCK| - OBD_CONNECT_AT | OBD_CONNECT_OSS_CAPA | - OBD_CONNECT_VBR | OBD_CONNECT_FULL20 | - OBD_CONNECT_64BITHASH | OBD_CONNECT_MAXBYTES | - OBD_CONNECT_EINPROGRESS | - OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE | - OBD_CONNECT_LAYOUTLOCK | - OBD_CONNECT_PINGLESS | OBD_CONNECT_LFSCK | - OBD_CONNECT_BULK_MBITS; - - if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_CKSUM)) { - /* OBD_CONNECT_CKSUM should always be set, even if checksums are - * disabled by default, because it can still be enabled on the - * fly via /sys. As a consequence, we still need to come to an - * agreement on the supported algorithms at connect time - */ - data->ocd_connect_flags |= OBD_CONNECT_CKSUM; - - if (OBD_FAIL_CHECK(OBD_FAIL_OSC_CKSUM_ADLER_ONLY)) - data->ocd_cksum_types = OBD_CKSUM_ADLER; - else - data->ocd_cksum_types = cksum_types_supported_client(); - } - - data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE; - - /* always ping even if server suppress_pings */ - if (sbi->ll_flags & LL_SBI_ALWAYS_PING) - data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS; - - CDEBUG(D_RPCTRACE, - "ocd_connect_flags: %#llx ocd_version: %d ocd_grant: %d\n", - data->ocd_connect_flags, - data->ocd_version, data->ocd_grant); - - obd->obd_upcall.onu_owner = &sbi->ll_lco; - obd->obd_upcall.onu_upcall = cl_ocd_update; - - data->ocd_brw_size = DT_MAX_BRW_SIZE; - - err = obd_connect(NULL, &sbi->ll_dt_exp, obd, &sbi->ll_sb_uuid, data, - NULL); - if (err == -EBUSY) { - LCONSOLE_ERROR_MSG(0x150, - "An OST (dt %s) is performing recovery, of which this client is not a part. Please wait for recovery to complete, abort, or time out.\n", - dt); - goto out_md_fid; - } else if (err) { - CERROR("%s: Cannot connect to %s: rc = %d\n", - sbi->ll_dt_exp->exp_obd->obd_name, dt, err); - goto out_md_fid; - } - - sbi->ll_dt_exp->exp_connect_data = *data; - - err = obd_fid_init(sbi->ll_dt_exp->exp_obd, sbi->ll_dt_exp, - LUSTRE_SEQ_METADATA); - if (err) { - CERROR("%s: Can't init data layer FID infrastructure, rc = %d\n", - sbi->ll_dt_exp->exp_obd->obd_name, err); - goto out_dt; - } - - mutex_lock(&sbi->ll_lco.lco_lock); - sbi->ll_lco.lco_flags = data->ocd_connect_flags; - sbi->ll_lco.lco_md_exp = sbi->ll_md_exp; - sbi->ll_lco.lco_dt_exp = sbi->ll_dt_exp; - mutex_unlock(&sbi->ll_lco.lco_lock); - - fid_zero(&sbi->ll_root_fid); - err = md_getstatus(sbi->ll_md_exp, &sbi->ll_root_fid); - if (err) { - CERROR("cannot mds_connect: rc = %d\n", err); - goto out_lock_cn_cb; - } - if (!fid_is_sane(&sbi->ll_root_fid)) { - CERROR("%s: Invalid root fid " DFID " during mount\n", - sbi->ll_md_exp->exp_obd->obd_name, - PFID(&sbi->ll_root_fid)); - err = -EINVAL; - goto out_lock_cn_cb; - } - CDEBUG(D_SUPER, "rootfid " DFID "\n", PFID(&sbi->ll_root_fid)); - - sb->s_op = &lustre_super_operations; - sb->s_xattr = ll_xattr_handlers; -#if THREAD_SIZE >= 8192 /*b=17630*/ - sb->s_export_op = &lustre_export_operations; -#endif - - /* make root inode - * XXX: move this to after cbd setup? - */ - valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMODEASIZE; - if (sbi->ll_flags & LL_SBI_ACL) - valid |= OBD_MD_FLACL; - - op_data = kzalloc(sizeof(*op_data), GFP_NOFS); - if (!op_data) { - err = -ENOMEM; - goto out_lock_cn_cb; - } - - op_data->op_fid1 = sbi->ll_root_fid; - op_data->op_mode = 0; - op_data->op_valid = valid; - - err = md_getattr(sbi->ll_md_exp, op_data, &request); - kfree(op_data); - if (err) { - CERROR("%s: md_getattr failed for root: rc = %d\n", - sbi->ll_md_exp->exp_obd->obd_name, err); - goto out_lock_cn_cb; - } - - err = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp, - sbi->ll_md_exp, &lmd); - if (err) { - CERROR("failed to understand root inode md: rc = %d\n", err); - ptlrpc_req_finished(request); - goto out_lock_cn_cb; - } - - LASSERT(fid_is_sane(&sbi->ll_root_fid)); - root = ll_iget(sb, cl_fid_build_ino(&sbi->ll_root_fid, - sbi->ll_flags & LL_SBI_32BIT_API), - &lmd); - md_free_lustre_md(sbi->ll_md_exp, &lmd); - ptlrpc_req_finished(request); - - if (IS_ERR(root)) { -#ifdef CONFIG_FS_POSIX_ACL - if (lmd.posix_acl) { - posix_acl_release(lmd.posix_acl); - lmd.posix_acl = NULL; - } -#endif - err = -EBADF; - CERROR("lustre_lite: bad iget4 for root\n"); - goto out_root; - } - - checksum = sbi->ll_flags & LL_SBI_CHECKSUM; - err = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM), - KEY_CHECKSUM, sizeof(checksum), &checksum, - NULL); - if (err) { - CERROR("%s: Set checksum failed: rc = %d\n", - sbi->ll_dt_exp->exp_obd->obd_name, err); - goto out_root; - } - cl_sb_init(sb); - - err = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CACHE_SET), - KEY_CACHE_SET, sizeof(*sbi->ll_cache), - sbi->ll_cache, NULL); - if (err) { - CERROR("%s: Set cache_set failed: rc = %d\n", - sbi->ll_dt_exp->exp_obd->obd_name, err); - goto out_root; - } - - sb->s_root = d_make_root(root); - if (!sb->s_root) { - CERROR("%s: can't make root dentry\n", - ll_get_fsname(sb, NULL, 0)); - err = -ENOMEM; - goto out_lock_cn_cb; - } - - sbi->ll_sdev_orig = sb->s_dev; - - /* We set sb->s_dev equal on all lustre clients in order to support - * NFS export clustering. NFSD requires that the FSID be the same - * on all clients. - */ - /* s_dev is also used in lt_compare() to compare two fs, but that is - * only a node-local comparison. - */ - uuid = obd_get_uuid(sbi->ll_md_exp); - if (uuid) { - sb->s_dev = get_uuid2int(uuid->uuid, strlen(uuid->uuid)); - get_uuid2fsid(uuid->uuid, strlen(uuid->uuid), &sbi->ll_fsid); - } - - kfree(data); - kfree(osfs); - - if (llite_root) { - err = ldebugfs_register_mountpoint(llite_root, sb, dt, md); - if (err < 0) { - CERROR("%s: could not register mount in debugfs: " - "rc = %d\n", ll_get_fsname(sb, NULL, 0), err); - err = 0; - } - } - - return err; -out_root: - iput(root); -out_lock_cn_cb: - obd_fid_fini(sbi->ll_dt_exp->exp_obd); -out_dt: - obd_disconnect(sbi->ll_dt_exp); - sbi->ll_dt_exp = NULL; -out_md_fid: - obd_fid_fini(sbi->ll_md_exp->exp_obd); -out_md: - obd_disconnect(sbi->ll_md_exp); - sbi->ll_md_exp = NULL; -out: - kfree(data); - kfree(osfs); - return err; -} - -int ll_get_max_mdsize(struct ll_sb_info *sbi, int *lmmsize) -{ - int size, rc; - - size = sizeof(*lmmsize); - rc = obd_get_info(NULL, sbi->ll_dt_exp, sizeof(KEY_MAX_EASIZE), - KEY_MAX_EASIZE, &size, lmmsize); - if (rc) { - CERROR("%s: cannot get max LOV EA size: rc = %d\n", - sbi->ll_dt_exp->exp_obd->obd_name, rc); - return rc; - } - - size = sizeof(int); - rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_MAX_EASIZE), - KEY_MAX_EASIZE, &size, lmmsize); - if (rc) - CERROR("Get max mdsize error rc %d\n", rc); - - return rc; -} - -/** - * Get the value of the default_easize parameter. - * - * \see client_obd::cl_default_mds_easize - * - * \param[in] sbi superblock info for this filesystem - * \param[out] lmmsize pointer to storage location for value - * - * \retval 0 on success - * \retval negative negated errno on failure - */ -int ll_get_default_mdsize(struct ll_sb_info *sbi, int *lmmsize) -{ - int size, rc; - - size = sizeof(int); - rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_DEFAULT_EASIZE), - KEY_DEFAULT_EASIZE, &size, lmmsize); - if (rc) - CERROR("Get default mdsize error rc %d\n", rc); - - return rc; -} - -/** - * Set the default_easize parameter to the given value. - * - * \see client_obd::cl_default_mds_easize - * - * \param[in] sbi superblock info for this filesystem - * \param[in] lmmsize the size to set - * - * \retval 0 on success - * \retval negative negated errno on failure - */ -int ll_set_default_mdsize(struct ll_sb_info *sbi, int lmmsize) -{ - if (lmmsize < sizeof(struct lov_mds_md) || - lmmsize > OBD_MAX_DEFAULT_EA_SIZE) - return -EINVAL; - - return obd_set_info_async(NULL, sbi->ll_md_exp, - sizeof(KEY_DEFAULT_EASIZE), - KEY_DEFAULT_EASIZE, - sizeof(int), &lmmsize, NULL); -} - -static void client_common_put_super(struct super_block *sb) -{ - struct ll_sb_info *sbi = ll_s2sbi(sb); - - cl_sb_fini(sb); - - obd_fid_fini(sbi->ll_dt_exp->exp_obd); - obd_disconnect(sbi->ll_dt_exp); - sbi->ll_dt_exp = NULL; - - ldebugfs_unregister_mountpoint(sbi); - - obd_fid_fini(sbi->ll_md_exp->exp_obd); - obd_disconnect(sbi->ll_md_exp); - sbi->ll_md_exp = NULL; -} - -void ll_kill_super(struct super_block *sb) -{ - struct ll_sb_info *sbi; - - /* not init sb ?*/ - if (!(sb->s_flags & SB_ACTIVE)) - return; - - sbi = ll_s2sbi(sb); - /* we need to restore s_dev from changed for clustered NFS before - * put_super because new kernels have cached s_dev and change sb->s_dev - * in put_super not affected real removing devices - */ - if (sbi) { - sb->s_dev = sbi->ll_sdev_orig; - sbi->ll_umounting = 1; - - /* wait running statahead threads to quit */ - while (atomic_read(&sbi->ll_sa_running) > 0) { - set_current_state(TASK_UNINTERRUPTIBLE); - schedule_timeout(msecs_to_jiffies(MSEC_PER_SEC >> 3)); - } - } -} - -static inline int ll_set_opt(const char *opt, char *data, int fl) -{ - if (strncmp(opt, data, strlen(opt)) != 0) - return 0; - else - return fl; -} - -/* non-client-specific mount options are parsed in lmd_parse */ -static int ll_options(char *options, int *flags) -{ - int tmp; - char *s1 = options, *s2; - - if (!options) - return 0; - - CDEBUG(D_CONFIG, "Parsing opts %s\n", options); - - while (*s1) { - CDEBUG(D_SUPER, "next opt=%s\n", s1); - tmp = ll_set_opt("nolock", s1, LL_SBI_NOLCK); - if (tmp) { - *flags |= tmp; - goto next; - } - tmp = ll_set_opt("flock", s1, LL_SBI_FLOCK); - if (tmp) { - *flags |= tmp; - goto next; - } - tmp = ll_set_opt("localflock", s1, LL_SBI_LOCALFLOCK); - if (tmp) { - *flags |= tmp; - goto next; - } - tmp = ll_set_opt("noflock", s1, - LL_SBI_FLOCK | LL_SBI_LOCALFLOCK); - if (tmp) { - *flags &= ~tmp; - goto next; - } - tmp = ll_set_opt("user_xattr", s1, LL_SBI_USER_XATTR); - if (tmp) { - *flags |= tmp; - goto next; - } - tmp = ll_set_opt("nouser_xattr", s1, LL_SBI_USER_XATTR); - if (tmp) { - *flags &= ~tmp; - goto next; - } - tmp = ll_set_opt("context", s1, 1); - if (tmp) - goto next; - tmp = ll_set_opt("fscontext", s1, 1); - if (tmp) - goto next; - tmp = ll_set_opt("defcontext", s1, 1); - if (tmp) - goto next; - tmp = ll_set_opt("rootcontext", s1, 1); - if (tmp) - goto next; - tmp = ll_set_opt("user_fid2path", s1, LL_SBI_USER_FID2PATH); - if (tmp) { - *flags |= tmp; - goto next; - } - tmp = ll_set_opt("nouser_fid2path", s1, LL_SBI_USER_FID2PATH); - if (tmp) { - *flags &= ~tmp; - goto next; - } - - tmp = ll_set_opt("checksum", s1, LL_SBI_CHECKSUM); - if (tmp) { - *flags |= tmp; - goto next; - } - tmp = ll_set_opt("nochecksum", s1, LL_SBI_CHECKSUM); - if (tmp) { - *flags &= ~tmp; - goto next; - } - tmp = ll_set_opt("lruresize", s1, LL_SBI_LRU_RESIZE); - if (tmp) { - *flags |= tmp; - goto next; - } - tmp = ll_set_opt("nolruresize", s1, LL_SBI_LRU_RESIZE); - if (tmp) { - *flags &= ~tmp; - goto next; - } - tmp = ll_set_opt("lazystatfs", s1, LL_SBI_LAZYSTATFS); - if (tmp) { - *flags |= tmp; - goto next; - } - tmp = ll_set_opt("nolazystatfs", s1, LL_SBI_LAZYSTATFS); - if (tmp) { - *flags &= ~tmp; - goto next; - } - tmp = ll_set_opt("32bitapi", s1, LL_SBI_32BIT_API); - if (tmp) { - *flags |= tmp; - goto next; - } - tmp = ll_set_opt("verbose", s1, LL_SBI_VERBOSE); - if (tmp) { - *flags |= tmp; - goto next; - } - tmp = ll_set_opt("noverbose", s1, LL_SBI_VERBOSE); - if (tmp) { - *flags &= ~tmp; - goto next; - } - tmp = ll_set_opt("always_ping", s1, LL_SBI_ALWAYS_PING); - if (tmp) { - *flags |= tmp; - goto next; - } - LCONSOLE_ERROR_MSG(0x152, "Unknown option '%s', won't mount.\n", - s1); - return -EINVAL; - -next: - /* Find next opt */ - s2 = strchr(s1, ','); - if (!s2) - break; - s1 = s2 + 1; - } - return 0; -} - -void ll_lli_init(struct ll_inode_info *lli) -{ - lli->lli_inode_magic = LLI_INODE_MAGIC; - lli->lli_flags = 0; - spin_lock_init(&lli->lli_lock); - lli->lli_posix_acl = NULL; - /* Do not set lli_fid, it has been initialized already. */ - fid_zero(&lli->lli_pfid); - lli->lli_mds_read_och = NULL; - lli->lli_mds_write_och = NULL; - lli->lli_mds_exec_och = NULL; - lli->lli_open_fd_read_count = 0; - lli->lli_open_fd_write_count = 0; - lli->lli_open_fd_exec_count = 0; - mutex_init(&lli->lli_och_mutex); - spin_lock_init(&lli->lli_agl_lock); - spin_lock_init(&lli->lli_layout_lock); - ll_layout_version_set(lli, CL_LAYOUT_GEN_NONE); - lli->lli_clob = NULL; - - init_rwsem(&lli->lli_xattrs_list_rwsem); - mutex_init(&lli->lli_xattrs_enq_lock); - - LASSERT(lli->lli_vfs_inode.i_mode != 0); - if (S_ISDIR(lli->lli_vfs_inode.i_mode)) { - mutex_init(&lli->lli_readdir_mutex); - lli->lli_opendir_key = NULL; - lli->lli_sai = NULL; - spin_lock_init(&lli->lli_sa_lock); - lli->lli_opendir_pid = 0; - lli->lli_sa_enabled = 0; - lli->lli_def_stripe_offset = -1; - } else { - mutex_init(&lli->lli_size_mutex); - lli->lli_symlink_name = NULL; - init_rwsem(&lli->lli_trunc_sem); - range_lock_tree_init(&lli->lli_write_tree); - init_rwsem(&lli->lli_glimpse_sem); - lli->lli_glimpse_time = 0; - INIT_LIST_HEAD(&lli->lli_agl_list); - lli->lli_agl_index = 0; - lli->lli_async_rc = 0; - } - mutex_init(&lli->lli_layout_mutex); -} - -int ll_fill_super(struct super_block *sb) -{ - struct lustre_profile *lprof = NULL; - struct lustre_sb_info *lsi = s2lsi(sb); - struct ll_sb_info *sbi; - char *dt = NULL, *md = NULL; - char *profilenm = get_profile_name(sb); - struct config_llog_instance *cfg; - int err; - static atomic_t ll_bdi_num = ATOMIC_INIT(0); - - CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb); - - err = ptlrpc_inc_ref(); - if (err) - return err; - - cfg = kzalloc(sizeof(*cfg), GFP_NOFS); - if (!cfg) { - err = -ENOMEM; - goto out_put; - } - - try_module_get(THIS_MODULE); - - /* client additional sb info */ - sbi = ll_init_sbi(sb); - lsi->lsi_llsbi = sbi; - if (!sbi) { - module_put(THIS_MODULE); - kfree(cfg); - err = -ENOMEM; - goto out_put; - } - - err = ll_options(lsi->lsi_lmd->lmd_opts, &sbi->ll_flags); - if (err) - goto out_free; - - err = super_setup_bdi_name(sb, "lustre-%d", - atomic_inc_return(&ll_bdi_num)); - if (err) - goto out_free; - - /* kernel >= 2.6.38 store dentry operations in sb->s_d_op. */ - sb->s_d_op = &ll_d_ops; - - /* Generate a string unique to this super, in case some joker tries - * to mount the same fs at two mount points. - * Use the address of the super itself. - */ - cfg->cfg_instance = sb; - cfg->cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid; - cfg->cfg_callback = class_config_llog_handler; - /* set up client obds */ - err = lustre_process_log(sb, profilenm, cfg); - if (err < 0) - goto out_free; - - /* Profile set with LCFG_MOUNTOPT so we can find our mdc and osc obds */ - lprof = class_get_profile(profilenm); - if (!lprof) { - LCONSOLE_ERROR_MSG(0x156, - "The client profile '%s' could not be read from the MGS. Does that filesystem exist?\n", - profilenm); - err = -EINVAL; - goto out_free; - } - CDEBUG(D_CONFIG, "Found profile %s: mdc=%s osc=%s\n", profilenm, - lprof->lp_md, lprof->lp_dt); - - dt = kasprintf(GFP_NOFS, "%s-%p", lprof->lp_dt, cfg->cfg_instance); - if (!dt) { - err = -ENOMEM; - goto out_free; - } - - md = kasprintf(GFP_NOFS, "%s-%p", lprof->lp_md, cfg->cfg_instance); - if (!md) { - err = -ENOMEM; - goto out_free; - } - - /* connections, registrations, sb setup */ - err = client_common_fill_super(sb, md, dt); - if (!err) - sbi->ll_client_common_fill_super_succeeded = 1; - -out_free: - kfree(md); - kfree(dt); - if (lprof) - class_put_profile(lprof); - if (err) - ll_put_super(sb); - else if (sbi->ll_flags & LL_SBI_VERBOSE) - LCONSOLE_WARN("Mounted %s\n", profilenm); - - kfree(cfg); -out_put: - if (err) - ptlrpc_dec_ref(); - return err; -} /* ll_fill_super */ - -void ll_put_super(struct super_block *sb) -{ - struct config_llog_instance cfg, params_cfg; - struct obd_device *obd; - struct lustre_sb_info *lsi = s2lsi(sb); - struct ll_sb_info *sbi = ll_s2sbi(sb); - char *profilenm = get_profile_name(sb); - int next, force = 1, rc = 0; - long ccc_count; - - CDEBUG(D_VFSTRACE, "VFS Op: sb %p - %s\n", sb, profilenm); - - cfg.cfg_instance = sb; - lustre_end_log(sb, profilenm, &cfg); - - params_cfg.cfg_instance = sb; - lustre_end_log(sb, PARAMS_FILENAME, ¶ms_cfg); - - if (sbi->ll_md_exp) { - obd = class_exp2obd(sbi->ll_md_exp); - if (obd) - force = obd->obd_force; - } - - /* Wait for unstable pages to be committed to stable storage */ - if (!force) - rc = l_wait_event_abortable(sbi->ll_cache->ccc_unstable_waitq, - !atomic_long_read(&sbi->ll_cache->ccc_unstable_nr)); - - ccc_count = atomic_long_read(&sbi->ll_cache->ccc_unstable_nr); - if (!force && rc != -ERESTARTSYS) - LASSERTF(!ccc_count, "count: %li\n", ccc_count); - - /* We need to set force before the lov_disconnect in - * lustre_common_put_super, since l_d cleans up osc's as well. - */ - if (force) { - next = 0; - while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, - &next)) != NULL) { - obd->obd_force = force; - } - } - - if (sbi->ll_client_common_fill_super_succeeded) { - /* Only if client_common_fill_super succeeded */ - client_common_put_super(sb); - } - - next = 0; - while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next))) - class_manual_cleanup(obd); - - if (sbi->ll_flags & LL_SBI_VERBOSE) - LCONSOLE_WARN("Unmounted %s\n", profilenm ? profilenm : ""); - - if (profilenm) - class_del_profile(profilenm); - - ll_free_sbi(sb); - lsi->lsi_llsbi = NULL; - - lustre_common_put_super(sb); - - cl_env_cache_purge(~0); - - module_put(THIS_MODULE); - - ptlrpc_dec_ref(); -} /* client_put_super */ - -struct inode *ll_inode_from_resource_lock(struct ldlm_lock *lock) -{ - struct inode *inode = NULL; - - /* NOTE: we depend on atomic igrab() -bzzz */ - lock_res_and_lock(lock); - if (lock->l_resource->lr_lvb_inode) { - struct ll_inode_info *lli; - - lli = ll_i2info(lock->l_resource->lr_lvb_inode); - if (lli->lli_inode_magic == LLI_INODE_MAGIC) { - inode = igrab(lock->l_resource->lr_lvb_inode); - } else { - inode = lock->l_resource->lr_lvb_inode; - LDLM_DEBUG_LIMIT(inode->i_state & I_FREEING ? D_INFO : - D_WARNING, lock, - "lr_lvb_inode %p is bogus: magic %08x", - lock->l_resource->lr_lvb_inode, - lli->lli_inode_magic); - inode = NULL; - } - } - unlock_res_and_lock(lock); - return inode; -} - -void ll_dir_clear_lsm_md(struct inode *inode) -{ - struct ll_inode_info *lli = ll_i2info(inode); - - LASSERT(S_ISDIR(inode->i_mode)); - - if (lli->lli_lsm_md) { - lmv_free_memmd(lli->lli_lsm_md); - lli->lli_lsm_md = NULL; - } -} - -static struct inode *ll_iget_anon_dir(struct super_block *sb, - const struct lu_fid *fid, - struct lustre_md *md) -{ - struct ll_sb_info *sbi = ll_s2sbi(sb); - struct mdt_body *body = md->body; - struct inode *inode; - ino_t ino; - - ino = cl_fid_build_ino(fid, sbi->ll_flags & LL_SBI_32BIT_API); - inode = iget_locked(sb, ino); - if (!inode) { - CERROR("%s: failed get simple inode " DFID ": rc = -ENOENT\n", - ll_get_fsname(sb, NULL, 0), PFID(fid)); - return ERR_PTR(-ENOENT); - } - - if (inode->i_state & I_NEW) { - struct ll_inode_info *lli = ll_i2info(inode); - struct lmv_stripe_md *lsm = md->lmv; - - inode->i_mode = (inode->i_mode & ~S_IFMT) | - (body->mbo_mode & S_IFMT); - LASSERTF(S_ISDIR(inode->i_mode), "Not slave inode " DFID "\n", - PFID(fid)); - - LTIME_S(inode->i_mtime) = 0; - LTIME_S(inode->i_atime) = 0; - LTIME_S(inode->i_ctime) = 0; - inode->i_rdev = 0; - - inode->i_op = &ll_dir_inode_operations; - inode->i_fop = &ll_dir_operations; - lli->lli_fid = *fid; - ll_lli_init(lli); - - LASSERT(lsm); - /* master object FID */ - lli->lli_pfid = body->mbo_fid1; - CDEBUG(D_INODE, "lli %p slave " DFID " master " DFID "\n", - lli, PFID(fid), PFID(&lli->lli_pfid)); - unlock_new_inode(inode); - } - - return inode; -} - -static int ll_init_lsm_md(struct inode *inode, struct lustre_md *md) -{ - struct lmv_stripe_md *lsm = md->lmv; - struct lu_fid *fid; - int i; - - LASSERT(lsm); - /* - * XXX sigh, this lsm_root initialization should be in - * LMV layer, but it needs ll_iget right now, so we - * put this here right now. - */ - for (i = 0; i < lsm->lsm_md_stripe_count; i++) { - fid = &lsm->lsm_md_oinfo[i].lmo_fid; - LASSERT(!lsm->lsm_md_oinfo[i].lmo_root); - /* Unfortunately ll_iget will call ll_update_inode, - * where the initialization of slave inode is slightly - * different, so it reset lsm_md to NULL to avoid - * initializing lsm for slave inode. - */ - /* For migrating inode, master stripe and master object will - * be same, so we only need assign this inode - */ - if (lsm->lsm_md_hash_type & LMV_HASH_FLAG_MIGRATION && !i) - lsm->lsm_md_oinfo[i].lmo_root = inode; - else - lsm->lsm_md_oinfo[i].lmo_root = - ll_iget_anon_dir(inode->i_sb, fid, md); - if (IS_ERR(lsm->lsm_md_oinfo[i].lmo_root)) { - int rc = PTR_ERR(lsm->lsm_md_oinfo[i].lmo_root); - - lsm->lsm_md_oinfo[i].lmo_root = NULL; - return rc; - } - } - - return 0; -} - -static inline int lli_lsm_md_eq(const struct lmv_stripe_md *lsm_md1, - const struct lmv_stripe_md *lsm_md2) -{ - return lsm_md1->lsm_md_magic == lsm_md2->lsm_md_magic && - lsm_md1->lsm_md_stripe_count == lsm_md2->lsm_md_stripe_count && - lsm_md1->lsm_md_master_mdt_index == - lsm_md2->lsm_md_master_mdt_index && - lsm_md1->lsm_md_hash_type == lsm_md2->lsm_md_hash_type && - lsm_md1->lsm_md_layout_version == - lsm_md2->lsm_md_layout_version && - !strcmp(lsm_md1->lsm_md_pool_name, - lsm_md2->lsm_md_pool_name); -} - -static int ll_update_lsm_md(struct inode *inode, struct lustre_md *md) -{ - struct ll_inode_info *lli = ll_i2info(inode); - struct lmv_stripe_md *lsm = md->lmv; - int rc; - - LASSERT(S_ISDIR(inode->i_mode)); - CDEBUG(D_INODE, "update lsm %p of " DFID "\n", lli->lli_lsm_md, - PFID(ll_inode2fid(inode))); - - /* no striped information from request. */ - if (!lsm) { - if (!lli->lli_lsm_md) { - return 0; - } else if (lli->lli_lsm_md->lsm_md_hash_type & - LMV_HASH_FLAG_MIGRATION) { - /* - * migration is done, the temporay MIGRATE layout has - * been removed - */ - CDEBUG(D_INODE, DFID " finish migration.\n", - PFID(ll_inode2fid(inode))); - lmv_free_memmd(lli->lli_lsm_md); - lli->lli_lsm_md = NULL; - return 0; - } - /* - * The lustre_md from req does not include stripeEA, - * see ll_md_setattr - */ - return 0; - } - - /* set the directory layout */ - if (!lli->lli_lsm_md) { - struct cl_attr *attr; - - rc = ll_init_lsm_md(inode, md); - if (rc) - return rc; - - /* - * set lsm_md to NULL, so the following free lustre_md - * will not free this lsm - */ - md->lmv = NULL; - lli->lli_lsm_md = lsm; - - attr = kzalloc(sizeof(*attr), GFP_NOFS); - if (!attr) - return -ENOMEM; - - /* validate the lsm */ - rc = md_merge_attr(ll_i2mdexp(inode), lsm, attr, - ll_md_blocking_ast); - if (rc) { - kfree(attr); - return rc; - } - - if (md->body->mbo_valid & OBD_MD_FLNLINK) - md->body->mbo_nlink = attr->cat_nlink; - if (md->body->mbo_valid & OBD_MD_FLSIZE) - md->body->mbo_size = attr->cat_size; - if (md->body->mbo_valid & OBD_MD_FLATIME) - md->body->mbo_atime = attr->cat_atime; - if (md->body->mbo_valid & OBD_MD_FLCTIME) - md->body->mbo_ctime = attr->cat_ctime; - if (md->body->mbo_valid & OBD_MD_FLMTIME) - md->body->mbo_mtime = attr->cat_mtime; - - kfree(attr); - - CDEBUG(D_INODE, "Set lsm %p magic %x to " DFID "\n", lsm, - lsm->lsm_md_magic, PFID(ll_inode2fid(inode))); - return 0; - } - - /* Compare the old and new stripe information */ - if (!lsm_md_eq(lli->lli_lsm_md, lsm)) { - struct lmv_stripe_md *old_lsm = lli->lli_lsm_md; - int idx; - - CERROR("%s: inode " DFID "(%p)'s lmv layout mismatch (%p)/(%p) magic:0x%x/0x%x stripe count: %d/%d master_mdt: %d/%d hash_type:0x%x/0x%x layout: 0x%x/0x%x pool:%s/%s\n", - ll_get_fsname(inode->i_sb, NULL, 0), PFID(&lli->lli_fid), - inode, lsm, old_lsm, - lsm->lsm_md_magic, old_lsm->lsm_md_magic, - lsm->lsm_md_stripe_count, - old_lsm->lsm_md_stripe_count, - lsm->lsm_md_master_mdt_index, - old_lsm->lsm_md_master_mdt_index, - lsm->lsm_md_hash_type, old_lsm->lsm_md_hash_type, - lsm->lsm_md_layout_version, - old_lsm->lsm_md_layout_version, - lsm->lsm_md_pool_name, - old_lsm->lsm_md_pool_name); - - for (idx = 0; idx < old_lsm->lsm_md_stripe_count; idx++) { - CERROR("%s: sub FIDs in old lsm idx %d, old: " DFID "\n", - ll_get_fsname(inode->i_sb, NULL, 0), idx, - PFID(&old_lsm->lsm_md_oinfo[idx].lmo_fid)); - } - - for (idx = 0; idx < lsm->lsm_md_stripe_count; idx++) { - CERROR("%s: sub FIDs in new lsm idx %d, new: " DFID "\n", - ll_get_fsname(inode->i_sb, NULL, 0), idx, - PFID(&lsm->lsm_md_oinfo[idx].lmo_fid)); - } - - return -EIO; - } - - return 0; -} - -void ll_clear_inode(struct inode *inode) -{ - struct ll_inode_info *lli = ll_i2info(inode); - struct ll_sb_info *sbi = ll_i2sbi(inode); - - CDEBUG(D_VFSTRACE, "VFS Op:inode=" DFID "(%p)\n", - PFID(ll_inode2fid(inode)), inode); - - if (S_ISDIR(inode->i_mode)) { - /* these should have been cleared in ll_file_release */ - LASSERT(!lli->lli_opendir_key); - LASSERT(!lli->lli_sai); - LASSERT(lli->lli_opendir_pid == 0); - } - - md_null_inode(sbi->ll_md_exp, ll_inode2fid(inode)); - - LASSERT(!lli->lli_open_fd_write_count); - LASSERT(!lli->lli_open_fd_read_count); - LASSERT(!lli->lli_open_fd_exec_count); - - if (lli->lli_mds_write_och) - ll_md_real_close(inode, FMODE_WRITE); - if (lli->lli_mds_exec_och) - ll_md_real_close(inode, FMODE_EXEC); - if (lli->lli_mds_read_och) - ll_md_real_close(inode, FMODE_READ); - - if (S_ISLNK(inode->i_mode)) { - kfree(lli->lli_symlink_name); - lli->lli_symlink_name = NULL; - } - - ll_xattr_cache_destroy(inode); - -#ifdef CONFIG_FS_POSIX_ACL - forget_all_cached_acls(inode); - if (lli->lli_posix_acl) { - posix_acl_release(lli->lli_posix_acl); - lli->lli_posix_acl = NULL; - } -#endif - lli->lli_inode_magic = LLI_INODE_DEAD; - - if (S_ISDIR(inode->i_mode)) - ll_dir_clear_lsm_md(inode); - if (S_ISREG(inode->i_mode) && !is_bad_inode(inode)) - LASSERT(list_empty(&lli->lli_agl_list)); - - /* - * XXX This has to be done before lsm is freed below, because - * cl_object still uses inode lsm. - */ - cl_inode_fini(inode); -} - -#define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET) - -static int ll_md_setattr(struct dentry *dentry, struct md_op_data *op_data) -{ - struct lustre_md md; - struct inode *inode = d_inode(dentry); - struct ll_sb_info *sbi = ll_i2sbi(inode); - struct ptlrpc_request *request = NULL; - int rc, ia_valid; - - op_data = ll_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0, - LUSTRE_OPC_ANY, NULL); - if (IS_ERR(op_data)) - return PTR_ERR(op_data); - - rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, &request); - if (rc) { - ptlrpc_req_finished(request); - if (rc == -ENOENT) { - clear_nlink(inode); - /* Unlinked special device node? Or just a race? - * Pretend we did everything. - */ - if (!S_ISREG(inode->i_mode) && - !S_ISDIR(inode->i_mode)) { - ia_valid = op_data->op_attr.ia_valid; - op_data->op_attr.ia_valid &= ~TIMES_SET_FLAGS; - rc = simple_setattr(dentry, &op_data->op_attr); - op_data->op_attr.ia_valid = ia_valid; - } - } else if (rc != -EPERM && rc != -EACCES && rc != -ETXTBSY) { - CERROR("md_setattr fails: rc = %d\n", rc); - } - return rc; - } - - rc = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp, - sbi->ll_md_exp, &md); - if (rc) { - ptlrpc_req_finished(request); - return rc; - } - - ia_valid = op_data->op_attr.ia_valid; - /* inode size will be in cl_setattr_ost, can't do it now since dirty - * cache is not cleared yet. - */ - op_data->op_attr.ia_valid &= ~(TIMES_SET_FLAGS | ATTR_SIZE); - if (S_ISREG(inode->i_mode)) - inode_lock(inode); - rc = simple_setattr(dentry, &op_data->op_attr); - if (S_ISREG(inode->i_mode)) - inode_unlock(inode); - op_data->op_attr.ia_valid = ia_valid; - - rc = ll_update_inode(inode, &md); - ptlrpc_req_finished(request); - - return rc; -} - -/* If this inode has objects allocated to it (lsm != NULL), then the OST - * object(s) determine the file size and mtime. Otherwise, the MDS will - * keep these values until such a time that objects are allocated for it. - * We do the MDS operations first, as it is checking permissions for us. - * We don't to the MDS RPC if there is nothing that we want to store there, - * otherwise there is no harm in updating mtime/atime on the MDS if we are - * going to do an RPC anyways. - * - * If we are doing a truncate, we will send the mtime and ctime updates - * to the OST with the punch RPC, otherwise we do an explicit setattr RPC. - * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE - * at the same time. - * - * In case of HSMimport, we only set attr on MDS. - */ -int ll_setattr_raw(struct dentry *dentry, struct iattr *attr, bool hsm_import) -{ - struct inode *inode = d_inode(dentry); - struct ll_inode_info *lli = ll_i2info(inode); - struct md_op_data *op_data = NULL; - int rc = 0; - - CDEBUG(D_VFSTRACE, "%s: setattr inode " DFID "(%p) from %llu to %llu, valid %x, hsm_import %d\n", - ll_get_fsname(inode->i_sb, NULL, 0), PFID(&lli->lli_fid), inode, - i_size_read(inode), attr->ia_size, attr->ia_valid, hsm_import); - - if (attr->ia_valid & ATTR_SIZE) { - /* Check new size against VFS/VM file size limit and rlimit */ - rc = inode_newsize_ok(inode, attr->ia_size); - if (rc) - return rc; - - /* The maximum Lustre file size is variable, based on the - * OST maximum object size and number of stripes. This - * needs another check in addition to the VFS check above. - */ - if (attr->ia_size > ll_file_maxbytes(inode)) { - CDEBUG(D_INODE, "file " DFID " too large %llu > %llu\n", - PFID(&lli->lli_fid), attr->ia_size, - ll_file_maxbytes(inode)); - return -EFBIG; - } - - attr->ia_valid |= ATTR_MTIME | ATTR_CTIME; - } - - /* POSIX: check before ATTR_*TIME_SET set (from setattr_prepare) */ - if (attr->ia_valid & TIMES_SET_FLAGS) { - if ((!uid_eq(current_fsuid(), inode->i_uid)) && - !capable(CAP_FOWNER)) - return -EPERM; - } - - /* We mark all of the fields "set" so MDS/OST does not re-set them */ - if (attr->ia_valid & ATTR_CTIME) { - attr->ia_ctime = current_time(inode); - attr->ia_valid |= ATTR_CTIME_SET; - } - if (!(attr->ia_valid & ATTR_ATIME_SET) && - (attr->ia_valid & ATTR_ATIME)) { - attr->ia_atime = current_time(inode); - attr->ia_valid |= ATTR_ATIME_SET; - } - if (!(attr->ia_valid & ATTR_MTIME_SET) && - (attr->ia_valid & ATTR_MTIME)) { - attr->ia_mtime = current_time(inode); - attr->ia_valid |= ATTR_MTIME_SET; - } - - if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME)) - CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %llu\n", - LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime), - (s64)ktime_get_real_seconds()); - - if (S_ISREG(inode->i_mode)) - inode_unlock(inode); - - /* - * We always do an MDS RPC, even if we're only changing the size; - * only the MDS knows whether truncate() should fail with -ETXTBUSY - */ - op_data = kzalloc(sizeof(*op_data), GFP_NOFS); - if (!op_data) { - rc = -ENOMEM; - goto out; - } - - if (!hsm_import && attr->ia_valid & ATTR_SIZE) { - /* - * If we are changing file size, file content is - * modified, flag it. - */ - attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE; - op_data->op_bias |= MDS_DATA_MODIFIED; - clear_bit(LLIF_DATA_MODIFIED, &lli->lli_flags); - } - - op_data->op_attr = *attr; - - rc = ll_md_setattr(dentry, op_data); - if (rc) - goto out; - - if (!S_ISREG(inode->i_mode) || hsm_import) { - rc = 0; - goto out; - } - - if (attr->ia_valid & (ATTR_SIZE | - ATTR_ATIME | ATTR_ATIME_SET | - ATTR_MTIME | ATTR_MTIME_SET)) { - /* For truncate and utimes sending attributes to OSTs, setting - * mtime/atime to the past will be performed under PW [0:EOF] - * extent lock (new_size:EOF for truncate). It may seem - * excessive to send mtime/atime updates to OSTs when not - * setting times to past, but it is necessary due to possible - * time de-synchronization between MDT inode and OST objects - */ - rc = cl_setattr_ost(ll_i2info(inode)->lli_clob, attr, 0); - } - - /* - * If the file was restored, it needs to set dirty flag. - * - * We've already sent MDS_DATA_MODIFIED flag in - * ll_md_setattr() for truncate. However, the MDT refuses to - * set the HS_DIRTY flag on released files, so we have to set - * it again if the file has been restored. Please check how - * LLIF_DATA_MODIFIED is set in vvp_io_setattr_fini(). - * - * Please notice that if the file is not released, the previous - * MDS_DATA_MODIFIED has taken effect and usually - * LLIF_DATA_MODIFIED is not set(see vvp_io_setattr_fini()). - * This way we can save an RPC for common open + trunc - * operation. - */ - if (test_and_clear_bit(LLIF_DATA_MODIFIED, &lli->lli_flags)) { - struct hsm_state_set hss = { - .hss_valid = HSS_SETMASK, - .hss_setmask = HS_DIRTY, - }; - int rc2; - - rc2 = ll_hsm_state_set(inode, &hss); - /* - * truncate and write can happen at the same time, so that - * the file can be set modified even though the file is not - * restored from released state, and ll_hsm_state_set() is - * not applicable for the file, and rc2 < 0 is normal in this - * case. - */ - if (rc2 < 0) - CDEBUG(D_INFO, DFID "HSM set dirty failed: rc2 = %d\n", - PFID(ll_inode2fid(inode)), rc2); - } - -out: - if (op_data) - ll_finish_md_op_data(op_data); - - if (S_ISREG(inode->i_mode)) { - inode_lock(inode); - if ((attr->ia_valid & ATTR_SIZE) && !hsm_import) - inode_dio_wait(inode); - } - - ll_stats_ops_tally(ll_i2sbi(inode), (attr->ia_valid & ATTR_SIZE) ? - LPROC_LL_TRUNC : LPROC_LL_SETATTR, 1); - - return rc; -} - -int ll_setattr(struct dentry *de, struct iattr *attr) -{ - int mode = d_inode(de)->i_mode; - - if ((attr->ia_valid & (ATTR_CTIME | ATTR_SIZE | ATTR_MODE)) == - (ATTR_CTIME | ATTR_SIZE | ATTR_MODE)) - attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE; - - if (((attr->ia_valid & (ATTR_MODE | ATTR_FORCE | ATTR_SIZE)) == - (ATTR_SIZE | ATTR_MODE)) && - (((mode & S_ISUID) && !(attr->ia_mode & S_ISUID)) || - (((mode & (S_ISGID | 0010)) == (S_ISGID | 0010)) && - !(attr->ia_mode & S_ISGID)))) - attr->ia_valid |= ATTR_FORCE; - - if ((attr->ia_valid & ATTR_MODE) && - (mode & S_ISUID) && - !(attr->ia_mode & S_ISUID) && - !(attr->ia_valid & ATTR_KILL_SUID)) - attr->ia_valid |= ATTR_KILL_SUID; - - if ((attr->ia_valid & ATTR_MODE) && - ((mode & (S_ISGID | 0010)) == (S_ISGID | 0010)) && - !(attr->ia_mode & S_ISGID) && - !(attr->ia_valid & ATTR_KILL_SGID)) - attr->ia_valid |= ATTR_KILL_SGID; - - return ll_setattr_raw(de, attr, false); -} - -int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs, - __u64 max_age, __u32 flags) -{ - struct ll_sb_info *sbi = ll_s2sbi(sb); - struct obd_statfs obd_osfs; - int rc; - - rc = obd_statfs(NULL, sbi->ll_md_exp, osfs, max_age, flags); - if (rc) { - CERROR("md_statfs fails: rc = %d\n", rc); - return rc; - } - - osfs->os_type = sb->s_magic; - - CDEBUG(D_SUPER, "MDC blocks %llu/%llu objects %llu/%llu\n", - osfs->os_bavail, osfs->os_blocks, osfs->os_ffree, - osfs->os_files); - - if (sbi->ll_flags & LL_SBI_LAZYSTATFS) - flags |= OBD_STATFS_NODELAY; - - rc = obd_statfs_rqset(sbi->ll_dt_exp, &obd_osfs, max_age, flags); - if (rc) { - CERROR("obd_statfs fails: rc = %d\n", rc); - return rc; - } - - CDEBUG(D_SUPER, "OSC blocks %llu/%llu objects %llu/%llu\n", - obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree, - obd_osfs.os_files); - - osfs->os_bsize = obd_osfs.os_bsize; - osfs->os_blocks = obd_osfs.os_blocks; - osfs->os_bfree = obd_osfs.os_bfree; - osfs->os_bavail = obd_osfs.os_bavail; - - /* If we don't have as many objects free on the OST as inodes - * on the MDS, we reduce the total number of inodes to - * compensate, so that the "inodes in use" number is correct. - */ - if (obd_osfs.os_ffree < osfs->os_ffree) { - osfs->os_files = (osfs->os_files - osfs->os_ffree) + - obd_osfs.os_ffree; - osfs->os_ffree = obd_osfs.os_ffree; - } - - return rc; -} - -int ll_statfs(struct dentry *de, struct kstatfs *sfs) -{ - struct super_block *sb = de->d_sb; - struct obd_statfs osfs; - int rc; - - CDEBUG(D_VFSTRACE, "VFS Op: at %llu jiffies\n", get_jiffies_64()); - ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_STAFS, 1); - - /* Some amount of caching on the client is allowed */ - rc = ll_statfs_internal(sb, &osfs, - get_jiffies_64() - OBD_STATFS_CACHE_SECONDS * HZ, - 0); - if (rc) - return rc; - - statfs_unpack(sfs, &osfs); - - /* We need to downshift for all 32-bit kernels, because we can't - * tell if the kernel is being called via sys_statfs64() or not. - * Stop before overflowing f_bsize - in which case it is better - * to just risk EOVERFLOW if caller is using old sys_statfs(). - */ - if (sizeof(long) < 8) { - while (osfs.os_blocks > ~0UL && sfs->f_bsize < 0x40000000) { - sfs->f_bsize <<= 1; - - osfs.os_blocks >>= 1; - osfs.os_bfree >>= 1; - osfs.os_bavail >>= 1; - } - } - - sfs->f_blocks = osfs.os_blocks; - sfs->f_bfree = osfs.os_bfree; - sfs->f_bavail = osfs.os_bavail; - sfs->f_fsid = ll_s2sbi(sb)->ll_fsid; - return 0; -} - -void ll_inode_size_lock(struct inode *inode) -{ - struct ll_inode_info *lli; - - LASSERT(!S_ISDIR(inode->i_mode)); - - lli = ll_i2info(inode); - mutex_lock(&lli->lli_size_mutex); -} - -void ll_inode_size_unlock(struct inode *inode) -{ - struct ll_inode_info *lli; - - lli = ll_i2info(inode); - mutex_unlock(&lli->lli_size_mutex); -} - -int ll_update_inode(struct inode *inode, struct lustre_md *md) -{ - struct ll_inode_info *lli = ll_i2info(inode); - struct mdt_body *body = md->body; - struct ll_sb_info *sbi = ll_i2sbi(inode); - - if (body->mbo_valid & OBD_MD_FLEASIZE) - cl_file_inode_init(inode, md); - - if (S_ISDIR(inode->i_mode)) { - int rc; - - rc = ll_update_lsm_md(inode, md); - if (rc) - return rc; - } - -#ifdef CONFIG_FS_POSIX_ACL - if (body->mbo_valid & OBD_MD_FLACL) { - spin_lock(&lli->lli_lock); - if (lli->lli_posix_acl) - posix_acl_release(lli->lli_posix_acl); - lli->lli_posix_acl = md->posix_acl; - spin_unlock(&lli->lli_lock); - } -#endif - inode->i_ino = cl_fid_build_ino(&body->mbo_fid1, - sbi->ll_flags & LL_SBI_32BIT_API); - inode->i_generation = cl_fid_build_gen(&body->mbo_fid1); - - if (body->mbo_valid & OBD_MD_FLATIME) { - if (body->mbo_atime > LTIME_S(inode->i_atime)) - LTIME_S(inode->i_atime) = body->mbo_atime; - lli->lli_atime = body->mbo_atime; - } - if (body->mbo_valid & OBD_MD_FLMTIME) { - if (body->mbo_mtime > LTIME_S(inode->i_mtime)) { - CDEBUG(D_INODE, - "setting ino %lu mtime from %lu to %llu\n", - inode->i_ino, LTIME_S(inode->i_mtime), - body->mbo_mtime); - LTIME_S(inode->i_mtime) = body->mbo_mtime; - } - lli->lli_mtime = body->mbo_mtime; - } - if (body->mbo_valid & OBD_MD_FLCTIME) { - if (body->mbo_ctime > LTIME_S(inode->i_ctime)) - LTIME_S(inode->i_ctime) = body->mbo_ctime; - lli->lli_ctime = body->mbo_ctime; - } - if (body->mbo_valid & OBD_MD_FLMODE) - inode->i_mode = (inode->i_mode & S_IFMT) | - (body->mbo_mode & ~S_IFMT); - if (body->mbo_valid & OBD_MD_FLTYPE) - inode->i_mode = (inode->i_mode & ~S_IFMT) | - (body->mbo_mode & S_IFMT); - LASSERT(inode->i_mode != 0); - if (S_ISREG(inode->i_mode)) - inode->i_blkbits = min(PTLRPC_MAX_BRW_BITS + 1, - LL_MAX_BLKSIZE_BITS); - else - inode->i_blkbits = inode->i_sb->s_blocksize_bits; - if (body->mbo_valid & OBD_MD_FLUID) - inode->i_uid = make_kuid(&init_user_ns, body->mbo_uid); - if (body->mbo_valid & OBD_MD_FLGID) - inode->i_gid = make_kgid(&init_user_ns, body->mbo_gid); - if (body->mbo_valid & OBD_MD_FLFLAGS) - inode->i_flags = ll_ext_to_inode_flags(body->mbo_flags); - if (body->mbo_valid & OBD_MD_FLNLINK) - set_nlink(inode, body->mbo_nlink); - if (body->mbo_valid & OBD_MD_FLRDEV) - inode->i_rdev = old_decode_dev(body->mbo_rdev); - - if (body->mbo_valid & OBD_MD_FLID) { - /* FID shouldn't be changed! */ - if (fid_is_sane(&lli->lli_fid)) { - LASSERTF(lu_fid_eq(&lli->lli_fid, &body->mbo_fid1), - "Trying to change FID " DFID " to the " DFID ", inode " DFID "(%p)\n", - PFID(&lli->lli_fid), PFID(&body->mbo_fid1), - PFID(ll_inode2fid(inode)), inode); - } else { - lli->lli_fid = body->mbo_fid1; - } - } - - LASSERT(fid_seq(&lli->lli_fid) != 0); - - if (body->mbo_valid & OBD_MD_FLSIZE) { - i_size_write(inode, body->mbo_size); - - CDEBUG(D_VFSTRACE, "inode=" DFID ", updating i_size %llu\n", - PFID(ll_inode2fid(inode)), - (unsigned long long)body->mbo_size); - - if (body->mbo_valid & OBD_MD_FLBLOCKS) - inode->i_blocks = body->mbo_blocks; - } - - if (body->mbo_valid & OBD_MD_TSTATE) { - if (body->mbo_t_state & MS_RESTORE) - set_bit(LLIF_FILE_RESTORING, &lli->lli_flags); - } - - return 0; -} - -int ll_read_inode2(struct inode *inode, void *opaque) -{ - struct lustre_md *md = opaque; - struct ll_inode_info *lli = ll_i2info(inode); - int rc; - - CDEBUG(D_VFSTRACE, "VFS Op:inode=" DFID "(%p)\n", - PFID(&lli->lli_fid), inode); - - /* Core attributes from the MDS first. This is a new inode, and - * the VFS doesn't zero times in the core inode so we have to do - * it ourselves. They will be overwritten by either MDS or OST - * attributes - we just need to make sure they aren't newer. - */ - LTIME_S(inode->i_mtime) = 0; - LTIME_S(inode->i_atime) = 0; - LTIME_S(inode->i_ctime) = 0; - inode->i_rdev = 0; - rc = ll_update_inode(inode, md); - if (rc) - return rc; - - /* OIDEBUG(inode); */ - - if (S_ISREG(inode->i_mode)) { - struct ll_sb_info *sbi = ll_i2sbi(inode); - - inode->i_op = &ll_file_inode_operations; - inode->i_fop = sbi->ll_fop; - inode->i_mapping->a_ops = (struct address_space_operations *)&ll_aops; - } else if (S_ISDIR(inode->i_mode)) { - inode->i_op = &ll_dir_inode_operations; - inode->i_fop = &ll_dir_operations; - } else if (S_ISLNK(inode->i_mode)) { - inode->i_op = &ll_fast_symlink_inode_operations; - } else { - inode->i_op = &ll_special_inode_operations; - - init_special_inode(inode, inode->i_mode, - inode->i_rdev); - } - - return 0; -} - -void ll_delete_inode(struct inode *inode) -{ - struct ll_inode_info *lli = ll_i2info(inode); - - if (S_ISREG(inode->i_mode) && lli->lli_clob) - /* discard all dirty pages before truncating them, required by - * osc_extent implementation at LU-1030. - */ - cl_sync_file_range(inode, 0, OBD_OBJECT_EOF, - CL_FSYNC_LOCAL, 1); - - truncate_inode_pages_final(&inode->i_data); - - LASSERTF(!inode->i_data.nrpages, - "inode=" DFID "(%p) nrpages=%lu, see http://jira.whamcloud.com/browse/LU-118\n", - PFID(ll_inode2fid(inode)), inode, inode->i_data.nrpages); - - ll_clear_inode(inode); - clear_inode(inode); -} - -int ll_iocontrol(struct inode *inode, struct file *file, - unsigned int cmd, unsigned long arg) -{ - struct ll_sb_info *sbi = ll_i2sbi(inode); - struct ptlrpc_request *req = NULL; - int rc, flags = 0; - - switch (cmd) { - case FSFILT_IOC_GETFLAGS: { - struct mdt_body *body; - struct md_op_data *op_data; - - op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, - 0, 0, LUSTRE_OPC_ANY, - NULL); - if (IS_ERR(op_data)) - return PTR_ERR(op_data); - - op_data->op_valid = OBD_MD_FLFLAGS; - rc = md_getattr(sbi->ll_md_exp, op_data, &req); - ll_finish_md_op_data(op_data); - if (rc) { - CERROR("%s: failure inode " DFID ": rc = %d\n", - sbi->ll_md_exp->exp_obd->obd_name, - PFID(ll_inode2fid(inode)), rc); - return -abs(rc); - } - - body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY); - - flags = body->mbo_flags; - - ptlrpc_req_finished(req); - - return put_user(flags, (int __user *)arg); - } - case FSFILT_IOC_SETFLAGS: { - struct md_op_data *op_data; - struct cl_object *obj; - struct iattr *attr; - - if (get_user(flags, (int __user *)arg)) - return -EFAULT; - - op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0, - LUSTRE_OPC_ANY, NULL); - if (IS_ERR(op_data)) - return PTR_ERR(op_data); - - op_data->op_attr_flags = flags; - op_data->op_attr.ia_valid |= ATTR_ATTR_FLAG; - rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, &req); - ll_finish_md_op_data(op_data); - ptlrpc_req_finished(req); - if (rc) - return rc; - - inode->i_flags = ll_ext_to_inode_flags(flags); - - obj = ll_i2info(inode)->lli_clob; - if (!obj) - return 0; - - attr = kzalloc(sizeof(*attr), GFP_NOFS); - if (!attr) - return -ENOMEM; - - attr->ia_valid = ATTR_ATTR_FLAG; - rc = cl_setattr_ost(obj, attr, flags); - kfree(attr); - return rc; - } - default: - return -ENOSYS; - } - - return 0; -} - -int ll_flush_ctx(struct inode *inode) -{ - struct ll_sb_info *sbi = ll_i2sbi(inode); - - CDEBUG(D_SEC, "flush context for user %d\n", - from_kuid(&init_user_ns, current_uid())); - - obd_set_info_async(NULL, sbi->ll_md_exp, - sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX, - 0, NULL, NULL); - obd_set_info_async(NULL, sbi->ll_dt_exp, - sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX, - 0, NULL, NULL); - return 0; -} - -/* umount -f client means force down, don't save state */ -void ll_umount_begin(struct super_block *sb) -{ - struct ll_sb_info *sbi = ll_s2sbi(sb); - struct obd_device *obd; - struct obd_ioctl_data *ioc_data; - int cnt = 0; - - CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb, - sb->s_count, atomic_read(&sb->s_active)); - - obd = class_exp2obd(sbi->ll_md_exp); - if (!obd) { - CERROR("Invalid MDC connection handle %#llx\n", - sbi->ll_md_exp->exp_handle.h_cookie); - return; - } - obd->obd_force = 1; - - obd = class_exp2obd(sbi->ll_dt_exp); - if (!obd) { - CERROR("Invalid LOV connection handle %#llx\n", - sbi->ll_dt_exp->exp_handle.h_cookie); - return; - } - obd->obd_force = 1; - - ioc_data = kzalloc(sizeof(*ioc_data), GFP_NOFS); - if (ioc_data) { - obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp, - sizeof(*ioc_data), ioc_data, NULL); - - obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp, - sizeof(*ioc_data), ioc_data, NULL); - - kfree(ioc_data); - } - - /* Really, we'd like to wait until there are no requests outstanding, - * and then continue. For now, we just periodically checking for vfs - * to decrement mnt_cnt and hope to finish it within 10sec. - */ - while (cnt < 10 && !may_umount(sbi->ll_mnt.mnt)) { - schedule_timeout_uninterruptible(HZ); - cnt++; - } - - schedule(); -} - -int ll_remount_fs(struct super_block *sb, int *flags, char *data) -{ - struct ll_sb_info *sbi = ll_s2sbi(sb); - char *profilenm = get_profile_name(sb); - int err; - __u32 read_only; - - if ((bool)(*flags & SB_RDONLY) != sb_rdonly(sb)) { - read_only = *flags & SB_RDONLY; - err = obd_set_info_async(NULL, sbi->ll_md_exp, - sizeof(KEY_READ_ONLY), - KEY_READ_ONLY, sizeof(read_only), - &read_only, NULL); - if (err) { - LCONSOLE_WARN("Failed to remount %s %s (%d)\n", - profilenm, read_only ? - "read-only" : "read-write", err); - return err; - } - - if (read_only) - sb->s_flags |= SB_RDONLY; - else - sb->s_flags &= ~SB_RDONLY; - - if (sbi->ll_flags & LL_SBI_VERBOSE) - LCONSOLE_WARN("Remounted %s %s\n", profilenm, - read_only ? "read-only" : "read-write"); - } - return 0; -} - -/** - * Cleanup the open handle that is cached on MDT-side. - * - * For open case, the client side open handling thread may hit error - * after the MDT grant the open. Under such case, the client should - * send close RPC to the MDT as cleanup; otherwise, the open handle - * on the MDT will be leaked there until the client umount or evicted. - * - * In further, if someone unlinked the file, because the open handle - * holds the reference on such file/object, then it will block the - * subsequent threads that want to locate such object via FID. - * - * \param[in] sb super block for this file-system - * \param[in] open_req pointer to the original open request - */ -void ll_open_cleanup(struct super_block *sb, struct ptlrpc_request *open_req) -{ - struct mdt_body *body; - struct md_op_data *op_data; - struct ptlrpc_request *close_req = NULL; - struct obd_export *exp = ll_s2sbi(sb)->ll_md_exp; - - body = req_capsule_server_get(&open_req->rq_pill, &RMF_MDT_BODY); - op_data = kzalloc(sizeof(*op_data), GFP_NOFS); - if (!op_data) - return; - - op_data->op_fid1 = body->mbo_fid1; - op_data->op_handle = body->mbo_handle; - op_data->op_mod_time = get_seconds(); - md_close(exp, op_data, NULL, &close_req); - ptlrpc_req_finished(close_req); - ll_finish_md_op_data(op_data); -} - -int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req, - struct super_block *sb, struct lookup_intent *it) -{ - struct ll_sb_info *sbi = NULL; - struct lustre_md md = { NULL }; - int rc; - - LASSERT(*inode || sb); - sbi = sb ? ll_s2sbi(sb) : ll_i2sbi(*inode); - rc = md_get_lustre_md(sbi->ll_md_exp, req, sbi->ll_dt_exp, - sbi->ll_md_exp, &md); - if (rc) - goto cleanup; - - if (*inode) { - rc = ll_update_inode(*inode, &md); - if (rc) - goto out; - } else { - LASSERT(sb); - - /* - * At this point server returns to client's same fid as client - * generated for creating. So using ->fid1 is okay here. - */ - if (!fid_is_sane(&md.body->mbo_fid1)) { - CERROR("%s: Fid is insane " DFID "\n", - ll_get_fsname(sb, NULL, 0), - PFID(&md.body->mbo_fid1)); - rc = -EINVAL; - goto out; - } - - *inode = ll_iget(sb, cl_fid_build_ino(&md.body->mbo_fid1, - sbi->ll_flags & LL_SBI_32BIT_API), - &md); - if (IS_ERR(*inode)) { -#ifdef CONFIG_FS_POSIX_ACL - if (md.posix_acl) { - posix_acl_release(md.posix_acl); - md.posix_acl = NULL; - } -#endif - rc = PTR_ERR(*inode); - CERROR("new_inode -fatal: rc %d\n", rc); - goto out; - } - } - - /* Handling piggyback layout lock. - * Layout lock can be piggybacked by getattr and open request. - * The lsm can be applied to inode only if it comes with a layout lock - * otherwise correct layout may be overwritten, for example: - * 1. proc1: mdt returns a lsm but not granting layout - * 2. layout was changed by another client - * 3. proc2: refresh layout and layout lock granted - * 4. proc1: to apply a stale layout - */ - if (it && it->it_lock_mode != 0) { - struct lustre_handle lockh; - struct ldlm_lock *lock; - - lockh.cookie = it->it_lock_handle; - lock = ldlm_handle2lock(&lockh); - LASSERT(lock); - if (ldlm_has_layout(lock)) { - struct cl_object_conf conf; - - memset(&conf, 0, sizeof(conf)); - conf.coc_opc = OBJECT_CONF_SET; - conf.coc_inode = *inode; - conf.coc_lock = lock; - conf.u.coc_layout = md.layout; - (void)ll_layout_conf(*inode, &conf); - } - LDLM_LOCK_PUT(lock); - } - -out: - md_free_lustre_md(sbi->ll_md_exp, &md); -cleanup: - if (rc != 0 && it && it->it_op & IT_OPEN) - ll_open_cleanup(sb ? sb : (*inode)->i_sb, req); - - return rc; -} - -int ll_obd_statfs(struct inode *inode, void __user *arg) -{ - struct ll_sb_info *sbi = NULL; - struct obd_export *exp; - char *buf = NULL; - struct obd_ioctl_data *data = NULL; - __u32 type; - int len = 0, rc; - - if (!inode) { - rc = -EINVAL; - goto out_statfs; - } - - sbi = ll_i2sbi(inode); - if (!sbi) { - rc = -EINVAL; - goto out_statfs; - } - - rc = obd_ioctl_getdata(&buf, &len, arg); - if (rc) - goto out_statfs; - - data = (void *)buf; - if (!data->ioc_inlbuf1 || !data->ioc_inlbuf2 || - !data->ioc_pbuf1 || !data->ioc_pbuf2) { - rc = -EINVAL; - goto out_statfs; - } - - if (data->ioc_inllen1 != sizeof(__u32) || - data->ioc_inllen2 != sizeof(__u32) || - data->ioc_plen1 != sizeof(struct obd_statfs) || - data->ioc_plen2 != sizeof(struct obd_uuid)) { - rc = -EINVAL; - goto out_statfs; - } - - memcpy(&type, data->ioc_inlbuf1, sizeof(__u32)); - if (type & LL_STATFS_LMV) { - exp = sbi->ll_md_exp; - } else if (type & LL_STATFS_LOV) { - exp = sbi->ll_dt_exp; - } else { - rc = -ENODEV; - goto out_statfs; - } - - rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, buf, NULL); - if (rc) - goto out_statfs; -out_statfs: - kvfree(buf); - return rc; -} - -int ll_process_config(struct lustre_cfg *lcfg) -{ - char *ptr; - void *sb; - struct lprocfs_static_vars lvars; - unsigned long x; - int rc = 0; - - lprocfs_llite_init_vars(&lvars); - - /* The instance name contains the sb: lustre-client-aacfe000 */ - ptr = strrchr(lustre_cfg_string(lcfg, 0), '-'); - if (!ptr || !*(++ptr)) - return -EINVAL; - rc = kstrtoul(ptr, 16, &x); - if (rc != 0) - return -EINVAL; - sb = (void *)x; - /* This better be a real Lustre superblock! */ - LASSERT(s2lsi((struct super_block *)sb)->lsi_lmd->lmd_magic == - LMD_MAGIC); - - /* Note we have not called client_common_fill_super yet, so - * proc fns must be able to handle that! - */ - rc = class_process_proc_param(PARAM_LLITE, lvars.obd_vars, - lcfg, sb); - if (rc > 0) - rc = 0; - return rc; -} - -/* this function prepares md_op_data hint for passing ot down to MD stack. */ -struct md_op_data *ll_prep_md_op_data(struct md_op_data *op_data, - struct inode *i1, struct inode *i2, - const char *name, size_t namelen, - u32 mode, __u32 opc, void *data) -{ - if (!name) { - /* Do not reuse namelen for something else. */ - if (namelen) - return ERR_PTR(-EINVAL); - } else { - if (namelen > ll_i2sbi(i1)->ll_namelen) - return ERR_PTR(-ENAMETOOLONG); - - if (!lu_name_is_valid_2(name, namelen)) - return ERR_PTR(-EINVAL); - } - - if (!op_data) - op_data = kzalloc(sizeof(*op_data), GFP_NOFS); - - if (!op_data) - return ERR_PTR(-ENOMEM); - - ll_i2gids(op_data->op_suppgids, i1, i2); - op_data->op_fid1 = *ll_inode2fid(i1); - op_data->op_default_stripe_offset = -1; - if (S_ISDIR(i1->i_mode)) { - op_data->op_mea1 = ll_i2info(i1)->lli_lsm_md; - if (opc == LUSTRE_OPC_MKDIR) - op_data->op_default_stripe_offset = - ll_i2info(i1)->lli_def_stripe_offset; - } - - if (i2) { - op_data->op_fid2 = *ll_inode2fid(i2); - if (S_ISDIR(i2->i_mode)) - op_data->op_mea2 = ll_i2info(i2)->lli_lsm_md; - } else { - fid_zero(&op_data->op_fid2); - } - - if (ll_i2sbi(i1)->ll_flags & LL_SBI_64BIT_HASH) - op_data->op_cli_flags |= CLI_HASH64; - - if (ll_need_32bit_api(ll_i2sbi(i1))) - op_data->op_cli_flags |= CLI_API32; - - op_data->op_name = name; - op_data->op_namelen = namelen; - op_data->op_mode = mode; - op_data->op_mod_time = ktime_get_real_seconds(); - op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid()); - op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid()); - op_data->op_cap = current_cap(); - if ((opc == LUSTRE_OPC_CREATE) && name && - filename_is_volatile(name, namelen, &op_data->op_mds)) - op_data->op_bias |= MDS_CREATE_VOLATILE; - else - op_data->op_mds = 0; - op_data->op_data = data; - - return op_data; -} - -void ll_finish_md_op_data(struct md_op_data *op_data) -{ - kfree(op_data); -} - -int ll_show_options(struct seq_file *seq, struct dentry *dentry) -{ - struct ll_sb_info *sbi; - - LASSERT(seq && dentry); - sbi = ll_s2sbi(dentry->d_sb); - - if (sbi->ll_flags & LL_SBI_NOLCK) - seq_puts(seq, ",nolock"); - - if (sbi->ll_flags & LL_SBI_FLOCK) - seq_puts(seq, ",flock"); - - if (sbi->ll_flags & LL_SBI_LOCALFLOCK) - seq_puts(seq, ",localflock"); - - if (sbi->ll_flags & LL_SBI_USER_XATTR) - seq_puts(seq, ",user_xattr"); - - if (sbi->ll_flags & LL_SBI_LAZYSTATFS) - seq_puts(seq, ",lazystatfs"); - - if (sbi->ll_flags & LL_SBI_USER_FID2PATH) - seq_puts(seq, ",user_fid2path"); - - if (sbi->ll_flags & LL_SBI_ALWAYS_PING) - seq_puts(seq, ",always_ping"); - - return 0; -} - -/** - * Get obd name by cmd, and copy out to user space - */ -int ll_get_obd_name(struct inode *inode, unsigned int cmd, unsigned long arg) -{ - struct ll_sb_info *sbi = ll_i2sbi(inode); - struct obd_device *obd; - - if (cmd == OBD_IOC_GETDTNAME) - obd = class_exp2obd(sbi->ll_dt_exp); - else if (cmd == OBD_IOC_GETMDNAME) - obd = class_exp2obd(sbi->ll_md_exp); - else - return -EINVAL; - - if (!obd) - return -ENOENT; - - if (copy_to_user((void __user *)arg, obd->obd_name, - strlen(obd->obd_name) + 1)) - return -EFAULT; - - return 0; -} - -/** - * Get lustre file system name by \a sbi. If \a buf is provided(non-NULL), the - * fsname will be returned in this buffer; otherwise, a static buffer will be - * used to store the fsname and returned to caller. - */ -char *ll_get_fsname(struct super_block *sb, char *buf, int buflen) -{ - static char fsname_static[MTI_NAME_MAXLEN]; - struct lustre_sb_info *lsi = s2lsi(sb); - char *ptr; - int len; - - if (!buf) { - /* this means the caller wants to use static buffer - * and it doesn't care about race. Usually this is - * in error reporting path - */ - buf = fsname_static; - buflen = sizeof(fsname_static); - } - - len = strlen(lsi->lsi_lmd->lmd_profile); - ptr = strrchr(lsi->lsi_lmd->lmd_profile, '-'); - if (ptr && (strcmp(ptr, "-client") == 0)) - len -= 7; - - if (unlikely(len >= buflen)) - len = buflen - 1; - strncpy(buf, lsi->lsi_lmd->lmd_profile, len); - buf[len] = '\0'; - - return buf; -} - -void ll_dirty_page_discard_warn(struct page *page, int ioret) -{ - char *buf, *path = NULL; - struct dentry *dentry = NULL; - struct vvp_object *obj = cl_inode2vvp(page->mapping->host); - - /* this can be called inside spin lock so use GFP_ATOMIC. */ - buf = (char *)__get_free_page(GFP_ATOMIC); - if (buf) { - dentry = d_find_alias(page->mapping->host); - if (dentry) - path = dentry_path_raw(dentry, buf, PAGE_SIZE); - } - - CDEBUG(D_WARNING, - "%s: dirty page discard: %s/fid: " DFID "/%s may get corrupted (rc %d)\n", - ll_get_fsname(page->mapping->host->i_sb, NULL, 0), - s2lsi(page->mapping->host->i_sb)->lsi_lmd->lmd_dev, - PFID(&obj->vob_header.coh_lu.loh_fid), - (path && !IS_ERR(path)) ? path : "", ioret); - - if (dentry) - dput(dentry); - - if (buf) - free_page((unsigned long)buf); -} - -ssize_t ll_copy_user_md(const struct lov_user_md __user *md, - struct lov_user_md **kbuf) -{ - struct lov_user_md lum; - ssize_t lum_size; - - if (copy_from_user(&lum, md, sizeof(lum))) { - lum_size = -EFAULT; - goto no_kbuf; - } - - lum_size = ll_lov_user_md_size(&lum); - if (lum_size < 0) - goto no_kbuf; - - *kbuf = kzalloc(lum_size, GFP_NOFS); - if (!*kbuf) { - lum_size = -ENOMEM; - goto no_kbuf; - } - - if (copy_from_user(*kbuf, md, lum_size) != 0) { - kfree(*kbuf); - *kbuf = NULL; - lum_size = -EFAULT; - } -no_kbuf: - return lum_size; -} - -/* - * Compute llite root squash state after a change of root squash - * configuration setting or add/remove of a lnet nid - */ -void ll_compute_rootsquash_state(struct ll_sb_info *sbi) -{ - struct root_squash_info *squash = &sbi->ll_squash; - struct lnet_process_id id; - bool matched; - int i; - - /* Update norootsquash flag */ - down_write(&squash->rsi_sem); - if (list_empty(&squash->rsi_nosquash_nids)) { - sbi->ll_flags &= ~LL_SBI_NOROOTSQUASH; - } else { - /* - * Do not apply root squash as soon as one of our NIDs is - * in the nosquash_nids list - */ - matched = false; - i = 0; - - while (LNetGetId(i++, &id) != -ENOENT) { - if (LNET_NETTYP(LNET_NIDNET(id.nid)) == LOLND) - continue; - if (cfs_match_nid(id.nid, &squash->rsi_nosquash_nids)) { - matched = true; - break; - } - } - if (matched) - sbi->ll_flags |= LL_SBI_NOROOTSQUASH; - else - sbi->ll_flags &= ~LL_SBI_NOROOTSQUASH; - } - up_write(&squash->rsi_sem); -} - -/** - * Parse linkea content to extract information about a given hardlink - * - * \param[in] ldata - Initialized linkea data - * \param[in] linkno - Link identifier - * \param[out] parent_fid - The entry's parent FID - * \param[in] size - Entry name destination buffer - * - * \retval 0 on success - * \retval Appropriate negative error code on failure - */ -static int ll_linkea_decode(struct linkea_data *ldata, unsigned int linkno, - struct lu_fid *parent_fid, struct lu_name *ln) -{ - unsigned int idx; - int rc; - - rc = linkea_init_with_rec(ldata); - if (rc < 0) - return rc; - - if (linkno >= ldata->ld_leh->leh_reccount) - /* beyond last link */ - return -ENODATA; - - linkea_first_entry(ldata); - for (idx = 0; ldata->ld_lee; idx++) { - linkea_entry_unpack(ldata->ld_lee, &ldata->ld_reclen, ln, - parent_fid); - if (idx == linkno) - break; - - linkea_next_entry(ldata); - } - - if (idx < linkno) - return -ENODATA; - - return 0; -} - -/** - * Get parent FID and name of an identified link. Operation is performed for - * a given link number, letting the caller iterate over linkno to list one or - * all links of an entry. - * - * \param[in] file - File descriptor against which to perform the operation - * \param[in,out] arg - User-filled structure containing the linkno to operate - * on and the available size. It is eventually filled - * with the requested information or left untouched on - * error - * - * \retval - 0 on success - * \retval - Appropriate negative error code on failure - */ -int ll_getparent(struct file *file, struct getparent __user *arg) -{ - struct inode *inode = file_inode(file); - struct linkea_data *ldata; - struct lu_fid parent_fid; - struct lu_buf buf = { - .lb_buf = NULL, - .lb_len = 0 - }; - struct lu_name ln; - u32 name_size; - u32 linkno; - int rc; - - if (!capable(CAP_DAC_READ_SEARCH) && - !(ll_i2sbi(inode)->ll_flags & LL_SBI_USER_FID2PATH)) - return -EPERM; - - if (get_user(name_size, &arg->gp_name_size)) - return -EFAULT; - - if (get_user(linkno, &arg->gp_linkno)) - return -EFAULT; - - if (name_size > PATH_MAX) - return -EINVAL; - - ldata = kzalloc(sizeof(*ldata), GFP_NOFS); - if (!ldata) - return -ENOMEM; - - rc = linkea_data_new(ldata, &buf); - if (rc < 0) - goto ldata_free; - - rc = ll_xattr_list(inode, XATTR_NAME_LINK, XATTR_TRUSTED_T, buf.lb_buf, - buf.lb_len, OBD_MD_FLXATTR); - if (rc < 0) - goto lb_free; - - rc = ll_linkea_decode(ldata, linkno, &parent_fid, &ln); - if (rc < 0) - goto lb_free; - - if (ln.ln_namelen >= name_size) { - rc = -EOVERFLOW; - goto lb_free; - } - - if (copy_to_user(&arg->gp_fid, &parent_fid, sizeof(arg->gp_fid))) { - rc = -EFAULT; - goto lb_free; - } - - if (copy_to_user(&arg->gp_name, ln.ln_name, ln.ln_namelen)) { - rc = -EFAULT; - goto lb_free; - } - - if (put_user('\0', arg->gp_name + ln.ln_namelen)) { - rc = -EFAULT; - goto lb_free; - } - -lb_free: - kvfree(buf.lb_buf); -ldata_free: - kfree(ldata); - return rc; -} |