diff options
Diffstat (limited to 'drivers/staging/lustre/lustre/obdclass/obdo.c')
| -rw-r--r-- | drivers/staging/lustre/lustre/obdclass/obdo.c | 362 |
1 files changed, 362 insertions, 0 deletions
diff --git a/drivers/staging/lustre/lustre/obdclass/obdo.c b/drivers/staging/lustre/lustre/obdclass/obdo.c new file mode 100644 index 000000000000..01a0e1f83a68 --- /dev/null +++ b/drivers/staging/lustre/lustre/obdclass/obdo.c @@ -0,0 +1,362 @@ +/* + * 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 <obd_class.h> +#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, obd_flag valid) +{ + obd_flag 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 = ll_inode_blksize(src); + 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 = src->i_uid; + newvalid |= OBD_MD_FLUID; + } + if (valid & OBD_MD_FLGID) { + dst->o_gid = src->i_gid; + newvalid |= OBD_MD_FLGID; + } + if (valid & OBD_MD_FLFLAGS) { + dst->o_flags = ll_inode_flags(src); + newvalid |= OBD_MD_FLFLAGS; + } + dst->o_valid |= newvalid; +} +EXPORT_SYMBOL(obdo_from_inode); + +void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_flag valid) +{ + CDEBUG(D_INODE, "src obdo "DOSTID" valid "LPX64", 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, obd_flag compare) +{ + int res = 0; + + if ( compare & OBD_MD_FLATIME ) + res = (res || (dst->o_atime != src->o_atime)); + if ( compare & OBD_MD_FLMTIME ) + res = (res || (dst->o_mtime != src->o_mtime)); + if ( compare & OBD_MD_FLCTIME ) + res = (res || (dst->o_ctime != src->o_ctime)); + if ( compare & OBD_MD_FLSIZE ) + res = (res || (dst->o_size != src->o_size)); + if ( compare & OBD_MD_FLBLOCKS ) /* allocation of space */ + res = (res || (dst->o_blocks != src->o_blocks)); + if ( compare & OBD_MD_FLBLKSZ ) + res = (res || (dst->o_blksize != src->o_blksize)); + if ( compare & OBD_MD_FLTYPE ) + res = (res || (((dst->o_mode ^ src->o_mode) & S_IFMT) != 0)); + if ( compare & OBD_MD_FLMODE ) + res = (res || (((dst->o_mode ^ src->o_mode) & ~S_IFMT) != 0)); + if ( compare & OBD_MD_FLUID ) + res = (res || (dst->o_uid != src->o_uid)); + if ( compare & OBD_MD_FLGID ) + res = (res || (dst->o_gid != src->o_gid)); + if ( compare & OBD_MD_FLFLAGS ) + res = (res || (dst->o_flags != src->o_flags)); + if ( compare & OBD_MD_FLNLINK ) + res = (res || (dst->o_nlink != src->o_nlink)); + if ( compare & OBD_MD_FLFID ) { + res = (res || (dst->o_parent_seq != src->o_parent_seq)); + res = (res || (dst->o_parent_ver != src->o_parent_ver)); + } + if ( compare & OBD_MD_FLGENER ) + res = (res || (dst->o_parent_oid != src->o_parent_oid)); + /* XXX Don't know if thses should be included here - wasn't previously + if ( compare & OBD_MD_FLINLINE ) + res = (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 (!current_is_in_group(oa->o_gid) && + !cfs_capable(CFS_CAP_FSETID)) + oa->o_mode &= ~S_ISGID; + } + if (ia_valid & ATTR_UID) { + oa->o_uid = attr->ia_uid; + oa->o_valid |= OBD_MD_FLUID; + } + if (ia_valid & ATTR_GID) { + oa->o_gid = attr->ia_gid; + oa->o_valid |= OBD_MD_FLGID; + } +} +EXPORT_SYMBOL(obdo_from_iattr); + +void iattr_from_obdo(struct iattr *attr, struct obdo *oa, obd_flag valid) +{ + valid &= oa->o_valid; + + if (valid & (OBD_MD_FLCTIME | OBD_MD_FLMTIME)) + CDEBUG(D_INODE, "valid "LPX64", new time "LPU64"/"LPU64"\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 (!current_is_in_group(oa->o_gid) && + !cfs_capable(CFS_CAP_FSETID)) + attr->ia_mode &= ~S_ISGID; + } + if (valid & OBD_MD_FLUID) { + attr->ia_uid = oa->o_uid; + attr->ia_valid |= ATTR_UID; + } + if (valid & OBD_MD_FLGID) { + attr->ia_gid = 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, obd_flag 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); |