1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Lustre filesystem abstraction routines
6 * Copyright (C) 2004 Cluster File Systems, Inc.
8 * This file is part of Lustre, http://www.lustre.org.
10 * Lustre is free software; you can redistribute it and/or
11 * modify it under the terms of version 2 of the GNU General Public
12 * License as published by the Free Software Foundation.
14 * Lustre is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with Lustre; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 #define DEBUG_SUBSYSTEM S_SM
26 #include <linux/kmod.h>
27 #include <linux/init.h>
29 #include <linux/slab.h>
30 #include <linux/dcache.h>
31 #include <linux/obd_class.h>
32 #include <linux/obd_support.h>
33 #include <linux/lustre_lib.h>
34 #include <linux/lustre_idl.h>
35 #include <linux/lustre_fsfilt.h>
36 #include <linux/lustre_lite.h>
37 #include <linux/lustre_mds.h>
38 #include <linux/lustre_smfs.h>
39 #include "smfs_internal.h"
41 static int mds_rec_link_pack(char *buffer, struct dentry *dentry,
42 struct inode *dir, void *data1, void *data2)
44 struct dentry *src = (struct dentry *)data1;
45 struct dentry *tgt = (struct dentry *)data2;
46 struct mds_kml_pack_info *mkpi;
47 struct lustre_msg *msg = NULL;
48 struct mdc_op_data *op_data;
52 OBD_ALLOC(op_data, sizeof(*op_data));
56 mdc_prepare_mdc_data(op_data, src->d_inode, dir,
57 (char *)tgt->d_name.name,
60 PACK_KML_REC_INIT(buffer, MDS_REINT);
61 mkpi = (struct mds_kml_pack_info *)buffer;
63 mkpi->mpi_bufcount = 2;
64 mkpi->mpi_size[0] = sizeof(struct mds_rec_link);
65 mkpi->mpi_size[1] = op_data->namelen + 1;
67 /* the mds reint log format is: opcode + mkpi + request */
68 msg = (struct lustre_msg *)(buffer + sizeof(*mkpi));
69 lustre_init_msg(msg, mkpi->mpi_bufcount, mkpi->mpi_size, NULL);
71 tmp = mdc_link_pack(msg, 0, op_data);
72 OBD_FREE(op_data, sizeof(*op_data));
73 mkpi->mpi_total_size = tmp - (void *)msg;
74 rc = mkpi->mpi_total_size + sizeof(*mkpi) + sizeof(int);
78 /* FIXME-WANGDI: did not think about EA situation. */
79 static int mds_rec_setattr_pack(char *buffer, struct dentry *dentry,
80 struct inode *dir, void *data1, void *data2)
82 struct iattr *iattr = (struct iattr *)data1;
83 struct mds_rec_setattr *rec = NULL;
84 struct mds_kml_pack_info *mkpi;
85 struct lustre_msg *msg = NULL;
86 struct mdc_op_data *op_data;
87 int rc = 0, ealen = 0;
91 OBD_ALLOC(op_data, sizeof(*op_data));
94 mdc_prepare_mdc_data(op_data, dir, NULL, NULL, 0, 0);
96 PACK_KML_REC_INIT(buffer, MDS_REINT);
97 mkpi = (struct mds_kml_pack_info*)buffer;
99 mkpi->mpi_bufcount = 1;
100 mkpi->mpi_size[0] = sizeof(struct mds_rec_setattr);
102 mkpi->mpi_bufcount++;
103 mkpi->mpi_size[1] = *(int *)data2;
104 ealen = *(int *)data2;
105 ea = data2 + sizeof(ealen);
108 msg = (struct lustre_msg *)(buffer + sizeof(*mkpi));
109 lustre_init_msg(msg, mkpi->mpi_bufcount, mkpi->mpi_size, NULL);
111 tmp = mdc_setattr_pack(msg, 0, op_data, iattr, ea, ealen, NULL, 0);
112 OBD_FREE(op_data, sizeof(*op_data));
114 /* FIXME-WANGDI: there are maybe some better ways to set the time
116 rec = (struct mds_rec_setattr *)lustre_msg_buf(msg, 0, 0);
117 if (rec->sa_valid & ATTR_CTIME)
118 rec->sa_valid |= ATTR_CTIME_SET;
119 if (rec->sa_valid & ATTR_MTIME)
120 rec->sa_valid |= ATTR_MTIME_SET;
121 if (rec->sa_valid & ATTR_ATIME)
122 rec->sa_valid |= ATTR_ATIME_SET;
124 mkpi->mpi_total_size = tmp - (void *)msg;
125 rc = mkpi->mpi_total_size + sizeof(*mkpi) + sizeof(int);
130 static int mds_rec_create_pack(char *buffer, struct dentry *dentry,
131 struct inode *dir, void *data1,
134 struct mds_kml_pack_info *mkpi;
135 struct lustre_msg *msg = NULL;
136 struct mdc_op_data *op_data;
137 struct mds_rec_create *rec;
138 struct dentry_params *param =
139 (struct dentry_params *) dentry->d_fsdata;
140 int rc = 0, tgt_len = 0;
145 OBD_ALLOC(op_data, sizeof(*op_data));
149 mdc_prepare_mdc_data(op_data, dir, dentry->d_inode,
150 (char *)dentry->d_name.name,
151 dentry->d_name.len, 0);
153 id_fid(&op_data->id1) = param->p_fid;
154 id_group(&op_data->id1) = param->p_group;
155 PACK_KML_REC_INIT(buffer, MDS_REINT);
156 mkpi = (struct mds_kml_pack_info *)buffer;
158 mkpi->mpi_bufcount = 2;
159 mkpi->mpi_size[0] = sizeof(struct mds_rec_create);
160 mkpi->mpi_size[1] = op_data->namelen + 1;
162 if (data1 && data2) {
163 mkpi->mpi_size[2] = *(int *)data2;
164 mkpi->mpi_bufcount++;
168 /* for symlink, data1 will be the tgt name. */
169 tgt_len = *(int *)data2;
171 msg = (struct lustre_msg *)(buffer + sizeof(*mkpi));
172 lustre_init_msg(msg, mkpi->mpi_bufcount, mkpi->mpi_size, NULL);
174 tmp = mdc_create_pack(msg, 0, op_data, dentry->d_inode->i_mode,
175 dentry->d_inode->i_mode, data1, tgt_len);
177 rec = (struct mds_rec_create *)lustre_msg_buf(msg, 0, 0);
178 rec->cr_replayid = op_data->id2;
179 rec->cr_flags |= REC_REINT_CREATE;
180 mkpi->mpi_total_size = tmp - (void *)msg;
181 rc = mkpi->mpi_total_size + sizeof(*mkpi) + sizeof(int);
182 OBD_FREE(op_data, sizeof(*op_data));
187 static int mds_rec_unlink_pack(char *buffer, struct dentry *dentry,
188 struct inode *dir, void *data1,
191 struct lustre_msg *msg = NULL;
192 struct mds_kml_pack_info *mkpi;
193 struct mdc_op_data *op_data;
194 int mode = *(int*)data1;
198 OBD_ALLOC(op_data, sizeof(*op_data));
202 mdc_prepare_mdc_data(op_data, dir, NULL,
203 (char *)dentry->d_name.name,
204 dentry->d_name.len, mode);
206 PACK_KML_REC_INIT(buffer, MDS_REINT);
207 mkpi = (struct mds_kml_pack_info*)buffer;
209 mkpi->mpi_bufcount = 2;
210 mkpi->mpi_size[0] = sizeof(struct mds_rec_unlink);
211 mkpi->mpi_size[1] = op_data->namelen + 1;
213 msg = (struct lustre_msg *)(buffer + sizeof(*mkpi));
214 lustre_init_msg(msg, mkpi->mpi_bufcount, mkpi->mpi_size, NULL);
216 tmp = mdc_unlink_pack(msg, 0, op_data);
218 mkpi->mpi_total_size = tmp - (void*)msg;
219 rc = mkpi->mpi_total_size + sizeof(*mkpi) + sizeof(int);
220 OBD_FREE(op_data, sizeof(*op_data));
225 static int mds_rec_rename_pack(char *buffer, struct dentry *dentry,
226 struct inode *dir, void *data1, void *data2)
228 struct dentry *new_dentry = (struct dentry *)data2;
229 struct inode *new_dir = (struct inode *)data1;
230 struct mds_kml_pack_info *mkpi;
231 struct lustre_msg *msg = NULL;
232 struct mdc_op_data *op_data;
233 struct mds_rec_rename *rec;
237 OBD_ALLOC(op_data, sizeof(*op_data));
240 mdc_prepare_mdc_data(op_data, dir, new_dir, NULL, 0, 0);
242 PACK_KML_REC_INIT(buffer, MDS_REINT);
243 mkpi = (struct mds_kml_pack_info*)buffer;
245 mkpi->mpi_bufcount = 3;
246 mkpi->mpi_size[0] = sizeof(struct mds_rec_rename);
247 mkpi->mpi_size[1] = dentry->d_name.len + 1;
248 mkpi->mpi_size[2] = new_dentry->d_name.len + 1;
250 rec = (struct mds_rec_rename *)(buffer + sizeof(*mkpi));
253 msg = (struct lustre_msg *)(buffer + sizeof(*mkpi));
254 lustre_init_msg(msg, mkpi->mpi_bufcount, mkpi->mpi_size, NULL);
256 tmp = mdc_rename_pack(msg, 0, op_data, (char *)dentry->d_name.name,
257 dentry->d_name.len, (char *)new_dentry->d_name.name,
258 new_dentry->d_name.len);
260 mkpi->mpi_total_size = tmp - (void*)msg;
261 rc = mkpi->mpi_total_size + sizeof(*mkpi) + sizeof(int);
262 OBD_FREE(op_data, sizeof(*op_data));
266 typedef int (*mds_pack_rec_func)(char *, struct dentry*, struct inode *, void *, void*);
268 static mds_pack_rec_func mds_kml_pack[REINT_MAX + 1] = {
269 [REINT_LINK] mds_rec_link_pack,
270 [REINT_SETATTR] mds_rec_setattr_pack,
271 [REINT_CREATE] mds_rec_create_pack,
272 [REINT_UNLINK] mds_rec_unlink_pack,
273 [REINT_RENAME] mds_rec_rename_pack,
276 int mds_rec_pack(int op, char *buffer, struct dentry *dentry,
277 struct inode *dir, void * arg, void * arg2)
279 return mds_kml_pack[op](buffer, dentry, dir, arg, arg2);