+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * lustre/smfs/super.c
- * Lustre filesystem abstraction routines
- *
- * Copyright (C) 2004 Cluster File Systems, Inc.
- *
- * This file is part of Lustre, http://www.lustre.org.
- *
- * Lustre is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * Lustre 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 for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Lustre; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
-
-#define DEBUG_SUBSYSTEM S_SM
-
-#include <linux/kmod.h>
-#include <linux/init.h>
-#include <linux/fs.h>
-#include <linux/slab.h>
-#include <linux/obd_class.h>
-#include <linux/obd_support.h>
-#include <linux/lustre_lib.h>
-#include <linux/lustre_idl.h>
-#include <linux/lustre_fsfilt.h>
-#include <linux/lustre_smfs.h>
-#include "smfs_internal.h"
-
-static int smfs_ost_get_id(obd_id *id, char *data, int size)
-{
- /* for obdfilter obdid is the name of the filename */
- char end;
- char *endp = &end;
- if (data)
- *id = simple_strtoull(data, &endp, 10);
- else
- return -EINVAL;
- CDEBUG(D_DENTRY,"name = %s\n", data);
- return 0;
-}
-
-/* Group 0 is no longer a legal group, to catch uninitialized IDs */
-#define FILTER_MIN_GROUPS 3
-static int smfs_ost_get_group(struct dentry *dentry, struct obdo *oa)
-{
- struct smfs_super_info *sinfo = S2SMI(dentry->d_inode->i_sb);
- struct obd_device *obd = class_exp2obd(sinfo->smsi_exp);
- struct filter_obd *filter = &obd->u.filter;
- struct dentry *dparent_subdir = dentry->d_parent;
- struct dentry *dparent_group = dparent_subdir->d_parent;
- int i = 0;
-
- if (dparent_group == NULL || dparent_group == dparent_subdir)
- return -EINVAL;
-
- CDEBUG(D_DENTRY,"try to find group for dentry %p\n", dparent_group);
- for (i = 1; i < filter->fo_group_count; i++) {
- CDEBUG(D_DENTRY, "group[%i] = %p\n", i, filter->fo_groups[i]);
- if (filter->fo_groups[i] == dparent_group) {
- oa->o_gr = i;
- oa->o_valid |= OBD_MD_FLGROUP;
- return 0;
- }
- }
- return -ENOENT;
-}
-
-static int ost_rec_create_pack(char *buffer, struct dentry *dentry,
- struct inode *dir, void *data1, void *data2)
-{
- struct obdo *oa = NULL;
- int rc = 0;
-
- PACK_KML_REC_INIT(buffer, OST_CREATE);
- oa = (struct obdo*)buffer;
- if (data1 && data2) {
- struct obdo *create_oa = (struct obdo *)data2;
- int num = *((int *)data1);
-
- memcpy(oa, create_oa, sizeof(*oa));
- memcpy(oa->o_inline, &num, sizeof(int));
- oa->o_valid |= OBD_MD_REINT;
- } else {
- oa->o_uid = 0; /* must have 0 uid / gid on OST */
- oa->o_gid = 0;
- oa->o_valid = OBD_MD_FLID | OBD_MD_FLGENER | OBD_MD_FLTYPE |
- OBD_MD_FLMODE | OBD_MD_FLUID | OBD_MD_FLGID;
- oa->o_size = 0;
- obdo_from_inode(oa, dentry->d_inode, OBD_MD_FLTYPE | OBD_MD_FLATIME |
- OBD_MD_FLMTIME | OBD_MD_FLCTIME);
- rc = smfs_ost_get_id(&oa->o_id, (char *)dentry->d_name.name,
- dentry->d_name.len);
- if (rc) {
- CERROR("can not find id of inode %lu, name %s\n",
- dentry->d_inode->i_ino, (char *)dentry->d_name.name);
- GOTO(out, rc);
- }
- rc = smfs_ost_get_group(dentry, oa);
- if (rc) {
- CERROR("can not find group inode %lu, name %s\n",
- dentry->d_inode->i_ino, (char *)dentry->d_name.name);
- GOTO(out, rc);
- }
- }
- rc = sizeof(*oa) + sizeof(int);
-out:
- RETURN(rc);
-}
-
-static int ost_rec_setattr_pack(char *buffer, struct dentry *dentry,
- struct inode *dir, void *data1, void *data2)
-{
- struct obdo *oa = NULL;
- struct iattr *attr = (struct iattr*)data1;
- int rc = 0;
-
- PACK_KML_REC_INIT(buffer, OST_SETATTR);
- oa = (struct obdo*)buffer;
-
- obdo_from_iattr(oa, attr, attr->ia_valid);
-
- rc = smfs_ost_get_id(&oa->o_id, (char *)dentry->d_name.name,
- dentry->d_name.len);
- if (rc)
- GOTO(out, rc = -ENOMEM);
- rc = smfs_ost_get_group(dentry, oa);
- if (rc) {
- CERROR("Can not find group node %lu\n", dentry->d_inode->i_ino);
- GOTO(out, rc = -ENOMEM);
- }
-
- rc = sizeof(*oa) + sizeof(int);
-out:
- RETURN(rc);
-}
-
-static int ost_rec_write_pack(char *buffer, struct dentry *dentry,
- struct inode *dir, void *data1, void *data2)
-{
- struct obdo *oa = NULL;
- int rc = 0;
-
- PACK_KML_REC_INIT(buffer, OST_WRITE);
- oa = (struct obdo*)buffer;
-
- rc = smfs_ost_get_id(&oa->o_id, (char*)dentry->d_name.name,
- dentry->d_name.len);
- if (rc)
- GOTO(out, rc = -ENOMEM);
- memcpy(oa->o_inline, &dentry->d_inode->i_ino, sizeof(unsigned long));
-
- rc = smfs_ost_get_group(dentry, oa);
- if (rc) {
- CERROR("Can not find group node %lu\n", dentry->d_inode->i_ino);
- GOTO(out, rc = -ENOMEM);
- }
- rc = sizeof(*oa) + sizeof(int);
-out:
- RETURN(rc);
-}
-
-typedef int (*ost_pack_rec_func)(char *buffer, struct dentry *dentry,
- struct inode *dir, void *data1, void *data2);
-
-static ost_pack_rec_func ost_kml_pack[REINT_MAX + 1] = {
- [REINT_SETATTR] ost_rec_setattr_pack,
- [REINT_CREATE] ost_rec_create_pack,
- [REINT_WRITE] ost_rec_write_pack,
-};
-
-int ost_rec_pack(int op, char *buffer, struct dentry *dentry,
- struct inode *dir, void *data1, void *data2)
-{
- if (op == REINT_SETATTR || op == REINT_CREATE || op == REINT_WRITE)
- return ost_kml_pack[op](buffer, dentry, dir, data1, data2);
- return 0;
-}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff