--- /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;
+ 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;
+
+ for (i = 1; i < filter->fo_group_count; i++) {
+ if (filter->fo_groups[i] == dparent_group) {
+ oa->o_gr = i;
+ oa->o_valid |= OBD_MD_FLGROUP;
+ return 0;
+ }
+ }
+ return -EINVAL;
+}
+
+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;
+ 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 node %lu\n", dentry->d_inode->i_ino);
+ 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_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(char *buffer, struct dentry *dentry, struct inode *dir,
+ void *data1, void *data2, int op)
+{
+ if (op == REINT_SETATTR || op == REINT_CREATE || op == REINT_WRITE) {
+ return ost_kml_pack[op](buffer, dentry, dir, data1, data2);
+ }
+ return 0;
+}
+
+int ost_rec_pack_init(struct super_block *sb)
+{
+ struct smfs_super_info *smsi = S2SMI(sb);
+
+ smsi->smsi_pack_rec[PACK_OST] = ost_rec_pack;
+
+ return 0;
+}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff