1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
5 * Lustre filesystem abstraction routines
7 * Copyright (C) 2004 Cluster File Systems, Inc.
9 * This file is part of Lustre, http://www.lustre.org.
11 * Lustre is free software; you can redistribute it and/or
12 * modify it under the terms of version 2 of the GNU General Public
13 * License as published by the Free Software Foundation.
15 * Lustre is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with Lustre; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 # define EXPORT_SYMTAB
29 #define DEBUG_SUBSYSTEM S_SM
31 #include <linux/kmod.h>
32 #include <linux/init.h>
34 #include <linux/slab.h>
35 #include <linux/obd_class.h>
36 #include <linux/obd_support.h>
37 #include <linux/lustre_lib.h>
38 #include <linux/lustre_idl.h>
39 #include <linux/lustre_fsfilt.h>
40 #include <linux/lustre_smfs.h>
41 #include "smfs_internal.h"
43 static int smfs_ost_get_id(obd_id *id, char *data, int size)
45 /*for obdfilter obdid is the name of the filename*/
49 *id = simple_strtoull(data, &endp, 10);
52 CDEBUG(D_DENTRY,"name = %s\n", data);
56 /* Group 0 is no longer a legal group, to catch uninitialized IDs */
57 #define FILTER_MIN_GROUPS 3
58 static int smfs_ost_get_group(struct dentry *dentry, struct obdo *oa)
60 struct smfs_super_info *sinfo = S2SMI(dentry->d_inode->i_sb);
61 struct obd_device *obd = class_exp2obd(sinfo->smsi_exp);
62 struct filter_obd *filter = &obd->u.filter;
63 struct dentry *dparent_subdir = dentry->d_parent;
64 struct dentry *dparent_group = dparent_subdir->d_parent;
67 if (dparent_group == NULL || dparent_group == dparent_subdir)
70 CDEBUG(D_DENTRY,"try to find group for dentry %p\n", dparent_group);
71 for (i = 1; i < filter->fo_group_count; i++) {
72 CDEBUG(D_DENTRY, "group[%i] = %p\n", i, filter->fo_groups[i]);
73 if (filter->fo_groups[i] == dparent_group) {
75 oa->o_valid |= OBD_MD_FLGROUP;
82 static int ost_rec_create_pack(char *buffer, struct dentry *dentry,
83 struct inode *dir, void *data1, void *data2)
85 struct obdo *oa = NULL;
88 PACK_KML_REC_INIT(buffer, OST_CREATE);
89 oa = (struct obdo*)buffer;
91 struct obdo *create_oa = (struct obdo *)data2;
92 int num = *((int *)data1);
94 memcpy(oa, create_oa, sizeof(*oa));
95 memcpy(oa->o_inline, &num, sizeof(int));
96 oa->o_valid |= OBD_MD_REINT;
98 oa->o_uid = 0; /* must have 0 uid / gid on OST */
100 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGENER | OBD_MD_FLTYPE |
101 OBD_MD_FLMODE | OBD_MD_FLUID | OBD_MD_FLGID;
103 obdo_from_inode(oa, dentry->d_inode, OBD_MD_FLTYPE|OBD_MD_FLATIME|
104 OBD_MD_FLMTIME| OBD_MD_FLCTIME);
105 rc = smfs_ost_get_id(&oa->o_id, (char*)dentry->d_name.name,
108 CERROR("Can not find id of node %lu\n", dentry->d_inode->i_ino);
109 GOTO(out, rc = -ENOMEM);
111 rc = smfs_ost_get_group(dentry, oa);
113 CERROR("Can not find group node %lu\n", dentry->d_inode->i_ino);
114 GOTO(out, rc = -ENOMEM);
117 rc = sizeof(*oa) + sizeof(int);
122 static int ost_rec_setattr_pack(char *buffer, struct dentry *dentry,
123 struct inode *dir, void *data1, void *data2)
125 struct obdo *oa = NULL;
126 struct iattr *attr = (struct iattr*)data1;
129 PACK_KML_REC_INIT(buffer, OST_SETATTR);
130 oa = (struct obdo*)buffer;
132 obdo_from_iattr(oa, attr, attr->ia_valid);
134 rc = smfs_ost_get_id(&oa->o_id, (char *)dentry->d_name.name,
137 GOTO(out, rc = -ENOMEM);
138 rc = smfs_ost_get_group(dentry, oa);
140 CERROR("Can not find group node %lu\n", dentry->d_inode->i_ino);
141 GOTO(out, rc = -ENOMEM);
144 rc = sizeof(*oa) + sizeof(int);
149 static int ost_rec_write_pack(char *buffer, struct dentry *dentry,
150 struct inode *dir, void *data1, void *data2)
152 struct obdo *oa = NULL;
155 PACK_KML_REC_INIT(buffer, OST_WRITE);
156 oa = (struct obdo*)buffer;
158 rc = smfs_ost_get_id(&oa->o_id, (char*)dentry->d_name.name,
161 GOTO(out, rc = -ENOMEM);
162 memcpy(oa->o_inline, &dentry->d_inode->i_ino, sizeof(unsigned long));
164 rc = smfs_ost_get_group(dentry, oa);
166 CERROR("Can not find group node %lu\n", dentry->d_inode->i_ino);
167 GOTO(out, rc = -ENOMEM);
169 rc = sizeof(*oa) + sizeof(int);
174 typedef int (*ost_pack_rec_func)(char *buffer, struct dentry *dentry,
175 struct inode *dir, void *data1, void *data2);
177 static ost_pack_rec_func ost_kml_pack[REINT_MAX + 1] = {
178 [REINT_SETATTR] ost_rec_setattr_pack,
179 [REINT_CREATE] ost_rec_create_pack,
180 [REINT_WRITE] ost_rec_write_pack,
183 int ost_rec_pack(int op, char *buffer, struct dentry *dentry,
184 struct inode *dir, void *data1, void *data2)
186 if (op == REINT_SETATTR || op == REINT_CREATE || op == REINT_WRITE)
187 return ost_kml_pack[op](buffer, dentry, dir, data1, data2);