| /* |
| * 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.sun.com/software/products/lustre/docs/GPLv2.pdf |
| * |
| * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| * |
| * GPL HEADER END |
| */ |
| /* |
| * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. |
| * Use is subject to license terms. |
| * |
| * Copyright (c) 2011, 2012, Intel Corporation. |
| */ |
| /* |
| * This file is part of Lustre, http://www.lustre.org/ |
| * Lustre is a trademark of Sun Microsystems, Inc. |
| * |
| * lustre/obdclass/linux/linux-obdo.c |
| * |
| * Object Devices Class Driver |
| * These are the only exported functions, they provide some generic |
| * infrastructure for managing object devices |
| */ |
| |
| #define DEBUG_SUBSYSTEM S_CLASS |
| |
| #include <linux/module.h> |
| #include "../../include/obd_class.h" |
| #include "../../include/lustre/lustre_idl.h" |
| |
| #include <linux/fs.h> |
| #include <linux/pagemap.h> /* for PAGE_CACHE_SIZE */ |
| |
| /*FIXME: Just copy from obdo_from_inode*/ |
| void obdo_from_la(struct obdo *dst, struct lu_attr *la, __u64 valid) |
| { |
| u32 newvalid = 0; |
| |
| if (valid & LA_ATIME) { |
| dst->o_atime = la->la_atime; |
| newvalid |= OBD_MD_FLATIME; |
| } |
| if (valid & LA_MTIME) { |
| dst->o_mtime = la->la_mtime; |
| newvalid |= OBD_MD_FLMTIME; |
| } |
| if (valid & LA_CTIME) { |
| dst->o_ctime = la->la_ctime; |
| newvalid |= OBD_MD_FLCTIME; |
| } |
| if (valid & LA_SIZE) { |
| dst->o_size = la->la_size; |
| newvalid |= OBD_MD_FLSIZE; |
| } |
| if (valid & LA_BLOCKS) { /* allocation of space (x512 bytes) */ |
| dst->o_blocks = la->la_blocks; |
| newvalid |= OBD_MD_FLBLOCKS; |
| } |
| if (valid & LA_TYPE) { |
| dst->o_mode = (dst->o_mode & S_IALLUGO) | |
| (la->la_mode & S_IFMT); |
| newvalid |= OBD_MD_FLTYPE; |
| } |
| if (valid & LA_MODE) { |
| dst->o_mode = (dst->o_mode & S_IFMT) | |
| (la->la_mode & S_IALLUGO); |
| newvalid |= OBD_MD_FLMODE; |
| } |
| if (valid & LA_UID) { |
| dst->o_uid = la->la_uid; |
| newvalid |= OBD_MD_FLUID; |
| } |
| if (valid & LA_GID) { |
| dst->o_gid = la->la_gid; |
| newvalid |= OBD_MD_FLGID; |
| } |
| dst->o_valid |= newvalid; |
| } |
| EXPORT_SYMBOL(obdo_from_la); |
| |
| /*FIXME: Just copy from obdo_from_inode*/ |
| void la_from_obdo(struct lu_attr *dst, struct obdo *obdo, u32 valid) |
| { |
| __u64 newvalid = 0; |
| |
| valid &= obdo->o_valid; |
| |
| if (valid & OBD_MD_FLATIME) { |
| dst->la_atime = obdo->o_atime; |
| newvalid |= LA_ATIME; |
| } |
| if (valid & OBD_MD_FLMTIME) { |
| dst->la_mtime = obdo->o_mtime; |
| newvalid |= LA_MTIME; |
| } |
| if (valid & OBD_MD_FLCTIME) { |
| dst->la_ctime = obdo->o_ctime; |
| newvalid |= LA_CTIME; |
| } |
| if (valid & OBD_MD_FLSIZE) { |
| dst->la_size = obdo->o_size; |
| newvalid |= LA_SIZE; |
| } |
| if (valid & OBD_MD_FLBLOCKS) { |
| dst->la_blocks = obdo->o_blocks; |
| newvalid |= LA_BLOCKS; |
| } |
| if (valid & OBD_MD_FLTYPE) { |
| dst->la_mode = (dst->la_mode & S_IALLUGO) | |
| (obdo->o_mode & S_IFMT); |
| newvalid |= LA_TYPE; |
| } |
| if (valid & OBD_MD_FLMODE) { |
| dst->la_mode = (dst->la_mode & S_IFMT) | |
| (obdo->o_mode & S_IALLUGO); |
| newvalid |= LA_MODE; |
| } |
| if (valid & OBD_MD_FLUID) { |
| dst->la_uid = obdo->o_uid; |
| newvalid |= LA_UID; |
| } |
| if (valid & OBD_MD_FLGID) { |
| dst->la_gid = obdo->o_gid; |
| newvalid |= LA_GID; |
| } |
| dst->la_valid = newvalid; |
| } |
| EXPORT_SYMBOL(la_from_obdo); |
| |
| void obdo_refresh_inode(struct inode *dst, struct obdo *src, u32 valid) |
| { |
| valid &= src->o_valid; |
| |
| if (valid & (OBD_MD_FLCTIME | OBD_MD_FLMTIME)) |
| CDEBUG(D_INODE, |
| "valid %#llx, cur time %lu/%lu, new %llu/%llu\n", |
| src->o_valid, LTIME_S(dst->i_mtime), |
| LTIME_S(dst->i_ctime), src->o_mtime, src->o_ctime); |
| |
| if (valid & OBD_MD_FLATIME && src->o_atime > LTIME_S(dst->i_atime)) |
| LTIME_S(dst->i_atime) = src->o_atime; |
| if (valid & OBD_MD_FLMTIME && src->o_mtime > LTIME_S(dst->i_mtime)) |
| LTIME_S(dst->i_mtime) = src->o_mtime; |
| if (valid & OBD_MD_FLCTIME && src->o_ctime > LTIME_S(dst->i_ctime)) |
| LTIME_S(dst->i_ctime) = src->o_ctime; |
| if (valid & OBD_MD_FLSIZE) |
| i_size_write(dst, src->o_size); |
| /* optimum IO size */ |
| if (valid & OBD_MD_FLBLKSZ && src->o_blksize > (1 << dst->i_blkbits)) |
| dst->i_blkbits = ffs(src->o_blksize) - 1; |
| |
| if (dst->i_blkbits < PAGE_CACHE_SHIFT) |
| dst->i_blkbits = PAGE_CACHE_SHIFT; |
| |
| /* allocation of space */ |
| if (valid & OBD_MD_FLBLOCKS && src->o_blocks > dst->i_blocks) |
| /* |
| * XXX shouldn't overflow be checked here like in |
| * obdo_to_inode(). |
| */ |
| dst->i_blocks = src->o_blocks; |
| } |
| EXPORT_SYMBOL(obdo_refresh_inode); |
| |
| void obdo_to_inode(struct inode *dst, struct obdo *src, u32 valid) |
| { |
| valid &= src->o_valid; |
| |
| LASSERTF(!(valid & (OBD_MD_FLTYPE | OBD_MD_FLGENER | OBD_MD_FLFID | |
| OBD_MD_FLID | OBD_MD_FLGROUP)), |
| "object "DOSTID", valid %x\n", POSTID(&src->o_oi), valid); |
| |
| if (valid & (OBD_MD_FLCTIME | OBD_MD_FLMTIME)) |
| CDEBUG(D_INODE, |
| "valid %#llx, cur time %lu/%lu, new %llu/%llu\n", |
| src->o_valid, LTIME_S(dst->i_mtime), |
| LTIME_S(dst->i_ctime), src->o_mtime, src->o_ctime); |
| |
| if (valid & OBD_MD_FLATIME) |
| LTIME_S(dst->i_atime) = src->o_atime; |
| if (valid & OBD_MD_FLMTIME) |
| LTIME_S(dst->i_mtime) = src->o_mtime; |
| if (valid & OBD_MD_FLCTIME && src->o_ctime > LTIME_S(dst->i_ctime)) |
| LTIME_S(dst->i_ctime) = src->o_ctime; |
| if (valid & OBD_MD_FLSIZE) |
| i_size_write(dst, src->o_size); |
| if (valid & OBD_MD_FLBLOCKS) { /* allocation of space */ |
| dst->i_blocks = src->o_blocks; |
| if (dst->i_blocks < src->o_blocks) /* overflow */ |
| dst->i_blocks = -1; |
| |
| } |
| if (valid & OBD_MD_FLBLKSZ) |
| dst->i_blkbits = ffs(src->o_blksize)-1; |
| if (valid & OBD_MD_FLMODE) |
| dst->i_mode = (dst->i_mode & S_IFMT) | (src->o_mode & ~S_IFMT); |
| if (valid & OBD_MD_FLUID) |
| dst->i_uid = make_kuid(&init_user_ns, src->o_uid); |
| if (valid & OBD_MD_FLGID) |
| dst->i_gid = make_kgid(&init_user_ns, src->o_gid); |
| if (valid & OBD_MD_FLFLAGS) |
| dst->i_flags = src->o_flags; |
| } |
| EXPORT_SYMBOL(obdo_to_inode); |