--- /dev/null
+/*
+ * 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) 2003, 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/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 "../include/obd_class.h"
+#include "../include/lustre/lustre_idl.h"
+
+void obdo_set_parent_fid(struct obdo *dst, const struct lu_fid *parent)
+{
+ dst->o_parent_oid = fid_oid(parent);
+ dst->o_parent_seq = fid_seq(parent);
+ dst->o_parent_ver = fid_ver(parent);
+ dst->o_valid |= OBD_MD_FLGENER | OBD_MD_FLFID;
+}
+EXPORT_SYMBOL(obdo_set_parent_fid);
+
+/* WARNING: the file systems must take care not to tinker with
+ attributes they don't manage (such as blocks). */
+void obdo_from_inode(struct obdo *dst, struct inode *src, u32 valid)
+{
+ u32 newvalid = 0;
+
+ if (valid & (OBD_MD_FLCTIME | OBD_MD_FLMTIME))
+ CDEBUG(D_INODE, "valid %x, new time %lu/%lu\n",
+ valid, LTIME_S(src->i_mtime),
+ LTIME_S(src->i_ctime));
+
+ if (valid & OBD_MD_FLATIME) {
+ dst->o_atime = LTIME_S(src->i_atime);
+ newvalid |= OBD_MD_FLATIME;
+ }
+ if (valid & OBD_MD_FLMTIME) {
+ dst->o_mtime = LTIME_S(src->i_mtime);
+ newvalid |= OBD_MD_FLMTIME;
+ }
+ if (valid & OBD_MD_FLCTIME) {
+ dst->o_ctime = LTIME_S(src->i_ctime);
+ newvalid |= OBD_MD_FLCTIME;
+ }
+ if (valid & OBD_MD_FLSIZE) {
+ dst->o_size = i_size_read(src);
+ newvalid |= OBD_MD_FLSIZE;
+ }
+ if (valid & OBD_MD_FLBLOCKS) { /* allocation of space (x512 bytes) */
+ dst->o_blocks = src->i_blocks;
+ newvalid |= OBD_MD_FLBLOCKS;
+ }
+ if (valid & OBD_MD_FLBLKSZ) { /* optimal block size */
+ dst->o_blksize = 1 << src->i_blkbits;
+ newvalid |= OBD_MD_FLBLKSZ;
+ }
+ if (valid & OBD_MD_FLTYPE) {
+ dst->o_mode = (dst->o_mode & S_IALLUGO) |
+ (src->i_mode & S_IFMT);
+ newvalid |= OBD_MD_FLTYPE;
+ }
+ if (valid & OBD_MD_FLMODE) {
+ dst->o_mode = (dst->o_mode & S_IFMT) |
+ (src->i_mode & S_IALLUGO);
+ newvalid |= OBD_MD_FLMODE;
+ }
+ if (valid & OBD_MD_FLUID) {
+ dst->o_uid = from_kuid(&init_user_ns, src->i_uid);
+ newvalid |= OBD_MD_FLUID;
+ }
+ if (valid & OBD_MD_FLGID) {
+ dst->o_gid = from_kgid(&init_user_ns, src->i_gid);
+ newvalid |= OBD_MD_FLGID;
+ }
+ if (valid & OBD_MD_FLFLAGS) {
+ dst->o_flags = src->i_flags;
+ newvalid |= OBD_MD_FLFLAGS;
+ }
+ dst->o_valid |= newvalid;
+}
+EXPORT_SYMBOL(obdo_from_inode);
+
+void obdo_cpy_md(struct obdo *dst, struct obdo *src, u32 valid)
+{
+ CDEBUG(D_INODE, "src obdo "DOSTID" valid %#llx, dst obdo "DOSTID"\n",
+ POSTID(&src->o_oi), src->o_valid, POSTID(&dst->o_oi));
+ if (valid & OBD_MD_FLATIME)
+ dst->o_atime = src->o_atime;
+ if (valid & OBD_MD_FLMTIME)
+ dst->o_mtime = src->o_mtime;
+ if (valid & OBD_MD_FLCTIME)
+ dst->o_ctime = src->o_ctime;
+ if (valid & OBD_MD_FLSIZE)
+ dst->o_size = src->o_size;
+ if (valid & OBD_MD_FLBLOCKS) /* allocation of space */
+ dst->o_blocks = src->o_blocks;
+ if (valid & OBD_MD_FLBLKSZ)
+ dst->o_blksize = src->o_blksize;
+ if (valid & OBD_MD_FLTYPE)
+ dst->o_mode = (dst->o_mode & ~S_IFMT) | (src->o_mode & S_IFMT);
+ if (valid & OBD_MD_FLMODE)
+ dst->o_mode = (dst->o_mode & S_IFMT) | (src->o_mode & ~S_IFMT);
+ if (valid & OBD_MD_FLUID)
+ dst->o_uid = src->o_uid;
+ if (valid & OBD_MD_FLGID)
+ dst->o_gid = src->o_gid;
+ if (valid & OBD_MD_FLFLAGS)
+ dst->o_flags = src->o_flags;
+ if (valid & OBD_MD_FLFID) {
+ dst->o_parent_seq = src->o_parent_seq;
+ dst->o_parent_ver = src->o_parent_ver;
+ }
+ if (valid & OBD_MD_FLGENER)
+ dst->o_parent_oid = src->o_parent_oid;
+ if (valid & OBD_MD_FLHANDLE)
+ dst->o_handle = src->o_handle;
+ if (valid & OBD_MD_FLCOOKIE)
+ dst->o_lcookie = src->o_lcookie;
+
+ dst->o_valid |= valid;
+}
+EXPORT_SYMBOL(obdo_cpy_md);
+
+/* returns FALSE if comparison (by flags) is same, TRUE if changed */
+int obdo_cmp_md(struct obdo *dst, struct obdo *src, u32 compare)
+{
+ int res = 0;
+
+ if (compare & OBD_MD_FLATIME)
+ res |= dst->o_atime != src->o_atime;
+ if (compare & OBD_MD_FLMTIME)
+ res |= dst->o_mtime != src->o_mtime;
+ if (compare & OBD_MD_FLCTIME)
+ res |= dst->o_ctime != src->o_ctime;
+ if (compare & OBD_MD_FLSIZE)
+ res |= dst->o_size != src->o_size;
+ if (compare & OBD_MD_FLBLOCKS) /* allocation of space */
+ res |= dst->o_blocks != src->o_blocks;
+ if (compare & OBD_MD_FLBLKSZ)
+ res |= dst->o_blksize != src->o_blksize;
+ if (compare & OBD_MD_FLTYPE)
+ res |= ((dst->o_mode ^ src->o_mode) & S_IFMT) != 0;
+ if (compare & OBD_MD_FLMODE)
+ res |= ((dst->o_mode ^ src->o_mode) & ~S_IFMT) != 0;
+ if (compare & OBD_MD_FLUID)
+ res |= dst->o_uid != src->o_uid;
+ if (compare & OBD_MD_FLGID)
+ res |= dst->o_gid != src->o_gid;
+ if (compare & OBD_MD_FLFLAGS)
+ res |= dst->o_flags != src->o_flags;
+ if (compare & OBD_MD_FLNLINK)
+ res |= dst->o_nlink != src->o_nlink;
+ if (compare & OBD_MD_FLFID) {
+ res |= dst->o_parent_seq != src->o_parent_seq;
+ res |= dst->o_parent_ver != src->o_parent_ver;
+ }
+ if (compare & OBD_MD_FLGENER)
+ res |= dst->o_parent_oid != src->o_parent_oid;
+ /* XXX Don't know if these should be included here - wasn't previously
+ if ( compare & OBD_MD_FLINLINE )
+ res |= memcmp(dst->o_inline, src->o_inline);
+ */
+ return res;
+}
+EXPORT_SYMBOL(obdo_cmp_md);
+
+void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj)
+{
+ ioobj->ioo_oid = oa->o_oi;
+ if (unlikely(!(oa->o_valid & OBD_MD_FLGROUP)))
+ ostid_set_seq_mdt0(&ioobj->ioo_oid);
+
+ /* Since 2.4 this does not contain o_mode in the low 16 bits.
+ * Instead, it holds (bd_md_max_brw - 1) for multi-bulk BRW RPCs */
+ ioobj->ioo_max_brw = 0;
+}
+EXPORT_SYMBOL(obdo_to_ioobj);
+
+void obdo_from_iattr(struct obdo *oa, struct iattr *attr, unsigned int ia_valid)
+{
+ if (ia_valid & ATTR_ATIME) {
+ oa->o_atime = LTIME_S(attr->ia_atime);
+ oa->o_valid |= OBD_MD_FLATIME;
+ }
+ if (ia_valid & ATTR_MTIME) {
+ oa->o_mtime = LTIME_S(attr->ia_mtime);
+ oa->o_valid |= OBD_MD_FLMTIME;
+ }
+ if (ia_valid & ATTR_CTIME) {
+ oa->o_ctime = LTIME_S(attr->ia_ctime);
+ oa->o_valid |= OBD_MD_FLCTIME;
+ }
+ if (ia_valid & ATTR_SIZE) {
+ oa->o_size = attr->ia_size;
+ oa->o_valid |= OBD_MD_FLSIZE;
+ }
+ if (ia_valid & ATTR_MODE) {
+ oa->o_mode = attr->ia_mode;
+ oa->o_valid |= OBD_MD_FLTYPE | OBD_MD_FLMODE;
+ if (!in_group_p(make_kgid(&init_user_ns, oa->o_gid)) &&
+ !capable(CFS_CAP_FSETID))
+ oa->o_mode &= ~S_ISGID;
+ }
+ if (ia_valid & ATTR_UID) {
+ oa->o_uid = from_kuid(&init_user_ns, attr->ia_uid);
+ oa->o_valid |= OBD_MD_FLUID;
+ }
+ if (ia_valid & ATTR_GID) {
+ oa->o_gid = from_kgid(&init_user_ns, attr->ia_gid);
+ oa->o_valid |= OBD_MD_FLGID;
+ }
+}
+EXPORT_SYMBOL(obdo_from_iattr);
+
+void iattr_from_obdo(struct iattr *attr, struct obdo *oa, u32 valid)
+{
+ valid &= oa->o_valid;
+
+ if (valid & (OBD_MD_FLCTIME | OBD_MD_FLMTIME))
+ CDEBUG(D_INODE, "valid %#llx, new time %llu/%llu\n",
+ oa->o_valid, oa->o_mtime, oa->o_ctime);
+
+ attr->ia_valid = 0;
+ if (valid & OBD_MD_FLATIME) {
+ LTIME_S(attr->ia_atime) = oa->o_atime;
+ attr->ia_valid |= ATTR_ATIME;
+ }
+ if (valid & OBD_MD_FLMTIME) {
+ LTIME_S(attr->ia_mtime) = oa->o_mtime;
+ attr->ia_valid |= ATTR_MTIME;
+ }
+ if (valid & OBD_MD_FLCTIME) {
+ LTIME_S(attr->ia_ctime) = oa->o_ctime;
+ attr->ia_valid |= ATTR_CTIME;
+ }
+ if (valid & OBD_MD_FLSIZE) {
+ attr->ia_size = oa->o_size;
+ attr->ia_valid |= ATTR_SIZE;
+ }
+#if 0 /* you shouldn't be able to change a file's type with setattr */
+ if (valid & OBD_MD_FLTYPE) {
+ attr->ia_mode = (attr->ia_mode & ~S_IFMT)|(oa->o_mode & S_IFMT);
+ attr->ia_valid |= ATTR_MODE;
+ }
+#endif
+ if (valid & OBD_MD_FLMODE) {
+ attr->ia_mode = (attr->ia_mode & S_IFMT)|(oa->o_mode & ~S_IFMT);
+ attr->ia_valid |= ATTR_MODE;
+ if (!in_group_p(make_kgid(&init_user_ns, oa->o_gid)) &&
+ !capable(CFS_CAP_FSETID))
+ attr->ia_mode &= ~S_ISGID;
+ }
+ if (valid & OBD_MD_FLUID) {
+ attr->ia_uid = make_kuid(&init_user_ns, oa->o_uid);
+ attr->ia_valid |= ATTR_UID;
+ }
+ if (valid & OBD_MD_FLGID) {
+ attr->ia_gid = make_kgid(&init_user_ns, oa->o_gid);
+ attr->ia_valid |= ATTR_GID;
+ }
+}
+EXPORT_SYMBOL(iattr_from_obdo);
+
+void md_from_obdo(struct md_op_data *op_data, struct obdo *oa, u32 valid)
+{
+ iattr_from_obdo(&op_data->op_attr, oa, valid);
+ if (valid & OBD_MD_FLBLOCKS) {
+ op_data->op_attr_blocks = oa->o_blocks;
+ op_data->op_attr.ia_valid |= ATTR_BLOCKS;
+ }
+ if (valid & OBD_MD_FLFLAGS) {
+ ((struct ll_iattr *)&op_data->op_attr)->ia_attr_flags =
+ oa->o_flags;
+ op_data->op_attr.ia_valid |= ATTR_ATTR_FLAG;
+ }
+}
+EXPORT_SYMBOL(md_from_obdo);
+
+void obdo_from_md(struct obdo *oa, struct md_op_data *op_data,
+ unsigned int valid)
+{
+ obdo_from_iattr(oa, &op_data->op_attr, valid);
+ if (valid & ATTR_BLOCKS) {
+ oa->o_blocks = op_data->op_attr_blocks;
+ oa->o_valid |= OBD_MD_FLBLOCKS;
+ }
+ if (valid & ATTR_ATTR_FLAG) {
+ oa->o_flags =
+ ((struct ll_iattr *)&op_data->op_attr)->ia_attr_flags;
+ oa->o_valid |= OBD_MD_FLFLAGS;
+ }
+}
+EXPORT_SYMBOL(obdo_from_md);
+
+void obdo_cpu_to_le(struct obdo *dobdo, struct obdo *sobdo)
+{
+ dobdo->o_size = cpu_to_le64(sobdo->o_size);
+ dobdo->o_mtime = cpu_to_le64(sobdo->o_mtime);
+ dobdo->o_atime = cpu_to_le64(sobdo->o_atime);
+ dobdo->o_ctime = cpu_to_le64(sobdo->o_ctime);
+ dobdo->o_blocks = cpu_to_le64(sobdo->o_blocks);
+ dobdo->o_mode = cpu_to_le32(sobdo->o_mode);
+ dobdo->o_uid = cpu_to_le32(sobdo->o_uid);
+ dobdo->o_gid = cpu_to_le32(sobdo->o_gid);
+ dobdo->o_flags = cpu_to_le32(sobdo->o_flags);
+ dobdo->o_nlink = cpu_to_le32(sobdo->o_nlink);
+ dobdo->o_blksize = cpu_to_le32(sobdo->o_blksize);
+ dobdo->o_valid = cpu_to_le64(sobdo->o_valid);
+}
+EXPORT_SYMBOL(obdo_cpu_to_le);
+
+void obdo_le_to_cpu(struct obdo *dobdo, struct obdo *sobdo)
+{
+ dobdo->o_size = le64_to_cpu(sobdo->o_size);
+ dobdo->o_mtime = le64_to_cpu(sobdo->o_mtime);
+ dobdo->o_atime = le64_to_cpu(sobdo->o_atime);
+ dobdo->o_ctime = le64_to_cpu(sobdo->o_ctime);
+ dobdo->o_blocks = le64_to_cpu(sobdo->o_blocks);
+ dobdo->o_mode = le32_to_cpu(sobdo->o_mode);
+ dobdo->o_uid = le32_to_cpu(sobdo->o_uid);
+ dobdo->o_gid = le32_to_cpu(sobdo->o_gid);
+ dobdo->o_flags = le32_to_cpu(sobdo->o_flags);
+ dobdo->o_nlink = le32_to_cpu(sobdo->o_nlink);
+ dobdo->o_blksize = le32_to_cpu(sobdo->o_blksize);
+ dobdo->o_valid = le64_to_cpu(sobdo->o_valid);
+}
+EXPORT_SYMBOL(obdo_le_to_cpu);
Code Review / kvmfornfv.git / blobdiff