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 static int mds_rec_setxattr_pack(char *buffer, struct dentry *dentry,
79 struct inode *dir, void *data1, void *data2)
81 struct mds_rec_setattr *rec = NULL;
82 struct mds_kml_pack_info *mkpi;
83 struct lustre_msg *msg = NULL;
84 char *name = (char *)data1;
85 struct kml_buffer *kbuf = (struct kml_buffer*)data2;
86 struct mdc_op_data *op_data;
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 = 3;
100 mkpi->mpi_size[0] = sizeof(struct mds_rec_setattr);
101 mkpi->mpi_size[1] = strlen(name);
102 mkpi->mpi_size[2] = kbuf->buf_size;
104 msg = (struct lustre_msg *)(buffer + sizeof(*mkpi));
105 lustre_init_msg(msg, mkpi->mpi_bufcount, mkpi->mpi_size, NULL);
107 LASSERT(kbuf && name);
109 tmp = mdc_setattr_pack(msg, 0, op_data, NULL, name, strlen(name),
110 kbuf->buf, kbuf->buf_size, NULL, 0);
111 OBD_FREE(op_data, sizeof(*op_data));
113 rec = (struct mds_rec_setattr *)lustre_msg_buf(msg, 0, 0);
115 rec->sa_valid = ATTR_EA_CMOBD;
117 mkpi->mpi_total_size = tmp - (void *)msg;
118 rc = mkpi->mpi_total_size + sizeof(*mkpi) + sizeof(int);
122 /* FIXME-WANGDI: did not think about EA situation. */
123 static int mds_rec_setattr_pack(char *buffer, struct dentry *dentry,
124 struct inode *dir, void *data1, void *data2)
126 struct iattr *iattr = (struct iattr *)data1;
127 struct mds_rec_setattr *rec = NULL;
128 struct mds_kml_pack_info *mkpi;
129 struct lustre_msg *msg = NULL;
130 struct mdc_op_data *op_data;
131 int rc = 0, ealen = 0;
135 OBD_ALLOC(op_data, sizeof(*op_data));
138 mdc_prepare_mdc_data(op_data, dir, NULL, NULL, 0, 0);
140 PACK_KML_REC_INIT(buffer, MDS_REINT);
141 mkpi = (struct mds_kml_pack_info*)buffer;
143 mkpi->mpi_bufcount = 1;
144 mkpi->mpi_size[0] = sizeof(struct mds_rec_setattr);
146 mkpi->mpi_bufcount++;
147 mkpi->mpi_size[1] = *(int *)data2;
148 ealen = *(int *)data2;
149 ea = data2 + sizeof(ealen);
152 msg = (struct lustre_msg *)(buffer + sizeof(*mkpi));
153 lustre_init_msg(msg, mkpi->mpi_bufcount, mkpi->mpi_size, NULL);
155 tmp = mdc_setattr_pack(msg, 0, op_data, iattr, ea, ealen,
157 OBD_FREE(op_data, sizeof(*op_data));
159 /* FIXME-WANGDI: there are maybe some better ways to set the time
161 rec = (struct mds_rec_setattr *)lustre_msg_buf(msg, 0, 0);
162 if (rec->sa_valid & ATTR_CTIME)
163 rec->sa_valid |= ATTR_CTIME_SET;
164 if (rec->sa_valid & ATTR_MTIME)
165 rec->sa_valid |= ATTR_MTIME_SET;
166 if (rec->sa_valid & ATTR_ATIME)
167 rec->sa_valid |= ATTR_ATIME_SET;
169 mkpi->mpi_total_size = tmp - (void *)msg;
170 rc = mkpi->mpi_total_size + sizeof(*mkpi) + sizeof(int);
175 static int mds_rec_create_pack(char *buffer, struct dentry *dentry,
176 struct inode *dir, void *data1,
179 struct mds_kml_pack_info *mkpi;
180 struct lustre_msg *msg = NULL;
181 struct mdc_op_data *op_data;
182 struct mds_rec_create *rec;
183 struct dentry_params *param =
184 (struct dentry_params *) dentry->d_fsdata;
185 int rc = 0, tgt_len = 0;
190 OBD_ALLOC(op_data, sizeof(*op_data));
194 mdc_prepare_mdc_data(op_data, dir, dentry->d_inode,
195 (char *)dentry->d_name.name,
196 dentry->d_name.len, 0);
198 id_fid(&op_data->id1) = param->p_fid;
199 id_group(&op_data->id1) = param->p_group;
200 PACK_KML_REC_INIT(buffer, MDS_REINT);
201 mkpi = (struct mds_kml_pack_info *)buffer;
203 mkpi->mpi_bufcount = 2;
204 mkpi->mpi_size[0] = sizeof(struct mds_rec_create);
205 mkpi->mpi_size[1] = op_data->namelen + 1;
207 if (data1 && data2) {
208 mkpi->mpi_size[2] = *(int *)data2;
209 mkpi->mpi_bufcount++;
213 /* for symlink, data1 will be the tgt name. */
214 tgt_len = *(int *)data2;
216 msg = (struct lustre_msg *)(buffer + sizeof(*mkpi));
217 lustre_init_msg(msg, mkpi->mpi_bufcount, mkpi->mpi_size, NULL);
219 tmp = mdc_create_pack(msg, 0, op_data, dentry->d_inode->i_mode,
220 dentry->d_inode->i_mode, data1, tgt_len);
222 rec = (struct mds_rec_create *)lustre_msg_buf(msg, 0, 0);
223 rec->cr_replayid = op_data->id2;
224 rec->cr_flags |= REC_REINT_CREATE;
225 mkpi->mpi_total_size = tmp - (void *)msg;
226 rc = mkpi->mpi_total_size + sizeof(*mkpi) + sizeof(int);
227 OBD_FREE(op_data, sizeof(*op_data));
232 static int mds_rec_unlink_pack(char *buffer, struct dentry *dentry,
233 struct inode *dir, void *data1,
236 struct lustre_msg *msg = NULL;
237 struct mds_kml_pack_info *mkpi;
238 struct mdc_op_data *op_data;
239 int mode = *(int*)data1;
243 OBD_ALLOC(op_data, sizeof(*op_data));
247 mdc_prepare_mdc_data(op_data, dir, NULL,
248 (char *)dentry->d_name.name,
249 dentry->d_name.len, mode);
251 PACK_KML_REC_INIT(buffer, MDS_REINT);
252 mkpi = (struct mds_kml_pack_info*)buffer;
254 mkpi->mpi_bufcount = 2;
255 mkpi->mpi_size[0] = sizeof(struct mds_rec_unlink);
256 mkpi->mpi_size[1] = op_data->namelen + 1;
258 msg = (struct lustre_msg *)(buffer + sizeof(*mkpi));
259 lustre_init_msg(msg, mkpi->mpi_bufcount, mkpi->mpi_size, NULL);
261 tmp = mdc_unlink_pack(msg, 0, op_data);
263 mkpi->mpi_total_size = tmp - (void*)msg;
264 rc = mkpi->mpi_total_size + sizeof(*mkpi) + sizeof(int);
265 OBD_FREE(op_data, sizeof(*op_data));
270 static int mds_rec_rename_pack(char *buffer, struct dentry *dentry,
271 struct inode *dir, void *data1, void *data2)
273 struct dentry *new_dentry = (struct dentry *)data2;
274 struct inode *new_dir = (struct inode *)data1;
275 struct mds_kml_pack_info *mkpi;
276 struct lustre_msg *msg = NULL;
277 struct mdc_op_data *op_data;
278 struct mds_rec_rename *rec;
282 OBD_ALLOC(op_data, sizeof(*op_data));
285 mdc_prepare_mdc_data(op_data, dir, new_dir, NULL, 0, 0);
287 PACK_KML_REC_INIT(buffer, MDS_REINT);
288 mkpi = (struct mds_kml_pack_info*)buffer;
290 mkpi->mpi_bufcount = 3;
291 mkpi->mpi_size[0] = sizeof(struct mds_rec_rename);
292 mkpi->mpi_size[1] = dentry->d_name.len + 1;
293 mkpi->mpi_size[2] = new_dentry->d_name.len + 1;
295 rec = (struct mds_rec_rename *)(buffer + sizeof(*mkpi));
298 msg = (struct lustre_msg *)(buffer + sizeof(*mkpi));
299 lustre_init_msg(msg, mkpi->mpi_bufcount, mkpi->mpi_size, NULL);
301 tmp = mdc_rename_pack(msg, 0, op_data, (char *)dentry->d_name.name,
302 dentry->d_name.len, (char *)new_dentry->d_name.name,
303 new_dentry->d_name.len);
305 mkpi->mpi_total_size = tmp - (void*)msg;
306 rc = mkpi->mpi_total_size + sizeof(*mkpi) + sizeof(int);
307 OBD_FREE(op_data, sizeof(*op_data));
311 typedef int (*mds_pack_rec_func)(char *, struct dentry*, struct inode *, void *, void*);
313 static mds_pack_rec_func mds_kml_pack[REINT_MAX + 1] = {
314 [REINT_LINK] mds_rec_link_pack,
315 [REINT_SETATTR] mds_rec_setattr_pack,
316 [REINT_CREATE] mds_rec_create_pack,
317 [REINT_UNLINK] mds_rec_unlink_pack,
318 [REINT_RENAME] mds_rec_rename_pack,
319 [REINT_SETXATTR] mds_rec_setxattr_pack,
322 int mds_rec_pack(int op, char *buffer, struct dentry *dentry,
323 struct inode *dir, void * arg, void * arg2)
325 return mds_kml_pack[op](buffer, dentry, dir, arg, arg2);