4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2014, Intel Corporation.
26 * lustre/target/out_lib.c
28 * Author: Di Wang <di.wang@intel.com>
29 * Author: Fan, Yong <fan.yong@intel.com>
32 #define DEBUG_SUBSYSTEM S_CLASS
34 #include <lu_target.h>
35 #include <lustre_update.h>
37 #include <obd_class.h>
39 #define OUT_UPDATE_BUFFER_SIZE_ADD 4096
40 #define OUT_UPDATE_BUFFER_SIZE_MAX (256 * 4096) /* 1MB update size now */
42 const char *update_op_str(__u16 opc)
44 static const char *opc_str[] = {
45 [OUT_START] = "start",
46 [OUT_CREATE] = "create",
47 [OUT_DESTROY] = "destroy",
48 [OUT_REF_ADD] = "ref_add",
49 [OUT_REF_DEL] = "ref_del" ,
50 [OUT_ATTR_SET] = "attr_set",
51 [OUT_ATTR_GET] = "attr_get",
52 [OUT_XATTR_SET] = "xattr_set",
53 [OUT_XATTR_GET] = "xattr_get",
54 [OUT_INDEX_LOOKUP] = "lookup",
55 [OUT_INDEX_INSERT] = "insert",
56 [OUT_INDEX_DELETE] = "delete",
57 [OUT_WRITE] = "write",
58 [OUT_XATTR_DEL] = "xattr_del",
59 [OUT_PUNCH] = "punch",
62 if (opc < ARRAY_SIZE(opc_str) && opc_str[opc] != NULL)
67 EXPORT_SYMBOL(update_op_str);
70 * Fill object update header
72 * Only fill the object update header, and parameters will be filled later
75 * \params[in] env execution environment
76 * \params[in] update object update to be filled
77 * \params[in] max_update_size maximum object update size, if the current
78 * update length equals or exceeds the size, it
80 * \params[in] update_op update type
81 * \params[in] fid object FID of the update
82 * \params[in] params_count the count of the update parameters
83 * \params[in] params_sizes the length of each parameters
85 * \retval 0 if packing succeeds.
86 * \retval -E2BIG if packing exceeds the maximum length.
88 int out_update_header_pack(const struct lu_env *env,
89 struct object_update *update, size_t max_update_size,
90 enum update_type update_op, const struct lu_fid *fid,
91 unsigned int param_count, __u16 *params_sizes)
93 struct object_update_param *param;
97 /* Check whether the packing exceeding the maxima update length */
98 update_size = sizeof(*update);
99 for (i = 0; i < param_count; i++)
100 update_size += cfs_size_round(sizeof(*param) + params_sizes[i]);
102 if (unlikely(update_size >= max_update_size))
105 update->ou_fid = *fid;
106 update->ou_type = update_op;
107 update->ou_params_count = param_count;
108 param = &update->ou_params[0];
109 for (i = 0; i < param_count; i++) {
110 param->oup_len = params_sizes[i];
111 param = (struct object_update_param *)((char *)param +
112 object_update_param_size(param));
119 * Packs one update into the update_buffer.
121 * \param[in] env execution environment
122 * \param[in] update update to be packed
123 * \param[in] max_update_size *maximum size of \a update
124 * \param[in] op update operation (enum update_type)
125 * \param[in] fid object FID for this update
126 * \param[in] param_count number of parameters for this update
127 * \param[in] param_sizes array of parameters length of this update
128 * \param[in] param_bufs parameter buffers
130 * \retval = 0 if updates packing succeeds
131 * \retval negative errno if updates packing fails
133 int out_update_pack(const struct lu_env *env, struct object_update *update,
134 size_t max_update_size, enum update_type op,
135 const struct lu_fid *fid, unsigned int param_count,
136 __u16 *param_sizes, const void **param_bufs)
138 struct object_update_param *param;
143 rc = out_update_header_pack(env, update, max_update_size, op, fid,
144 param_count, param_sizes);
148 param = &update->ou_params[0];
149 for (i = 0; i < param_count; i++) {
150 memcpy(¶m->oup_buf[0], param_bufs[i], param_sizes[i]);
151 param = (struct object_update_param *)((char *)param +
152 object_update_param_size(param));
157 EXPORT_SYMBOL(out_update_pack);
160 * Pack various updates into the update_buffer.
162 * The following functions pack different updates into the update_buffer
163 * So parameters of these API is basically same as its correspondent OSD/OSP
164 * API, for detail description of these parameters see osd_handler.c or
167 * \param[in] env execution environment
168 * \param[in] ubuf update buffer
169 * \param[in] fid fid of this object for the update
171 * \retval 0 if insertion succeeds.
172 * \retval negative errno if insertion fails.
174 int out_create_pack(const struct lu_env *env, struct object_update *update,
175 size_t max_update_size, const struct lu_fid *fid,
176 const struct lu_attr *attr, struct dt_allocation_hint *hint,
177 struct dt_object_format *dof)
180 __u16 sizes[2] = {sizeof(*obdo), 0};
182 const struct lu_fid *parent_fid = NULL;
186 if (hint != NULL && hint->dah_parent) {
187 parent_fid = lu_object_fid(&hint->dah_parent->do_lu);
188 sizes[1] = sizeof(*parent_fid);
192 rc = out_update_header_pack(env, update, max_update_size, OUT_CREATE,
193 fid, buf_count, sizes);
197 obdo = object_update_param_get(update, 0, NULL);
198 LASSERT(obdo != NULL);
200 obdo_from_la(obdo, attr, attr->la_valid);
201 lustre_set_wire_obdo(NULL, obdo, obdo);
203 if (parent_fid != NULL) {
206 tmp = object_update_param_get(update, 1, NULL);
207 LASSERT(tmp != NULL);
208 fid_cpu_to_le(tmp, parent_fid);
213 EXPORT_SYMBOL(out_create_pack);
215 int out_ref_del_pack(const struct lu_env *env, struct object_update *update,
216 size_t max_update_size, const struct lu_fid *fid)
218 return out_update_pack(env, update, max_update_size, OUT_REF_DEL, fid,
221 EXPORT_SYMBOL(out_ref_del_pack);
223 int out_ref_add_pack(const struct lu_env *env, struct object_update *update,
224 size_t max_update_size, const struct lu_fid *fid)
226 return out_update_pack(env, update, max_update_size, OUT_REF_ADD, fid,
229 EXPORT_SYMBOL(out_ref_add_pack);
231 int out_attr_set_pack(const struct lu_env *env, struct object_update *update,
232 size_t max_update_size, const struct lu_fid *fid,
233 const struct lu_attr *attr)
236 __u16 size = sizeof(*obdo);
240 rc = out_update_header_pack(env, update, max_update_size,
241 OUT_ATTR_SET, fid, 1, &size);
245 obdo = object_update_param_get(update, 0, NULL);
246 LASSERT(obdo != NULL);
248 obdo_from_la(obdo, attr, attr->la_valid);
249 lustre_set_wire_obdo(NULL, obdo, obdo);
253 EXPORT_SYMBOL(out_attr_set_pack);
255 int out_xattr_set_pack(const struct lu_env *env, struct object_update *update,
256 size_t max_update_size, const struct lu_fid *fid,
257 const struct lu_buf *buf, const char *name, __u32 flag)
259 __u16 sizes[3] = {strlen(name) + 1, buf->lb_len, sizeof(flag)};
260 const void *bufs[3] = {(char *)name, (char *)buf->lb_buf,
263 return out_update_pack(env, update, max_update_size, OUT_XATTR_SET,
264 fid, ARRAY_SIZE(sizes), sizes, bufs);
266 EXPORT_SYMBOL(out_xattr_set_pack);
268 int out_xattr_del_pack(const struct lu_env *env, struct object_update *update,
269 size_t max_update_size, const struct lu_fid *fid,
272 __u16 size = strlen(name) + 1;
274 return out_update_pack(env, update, max_update_size, OUT_XATTR_DEL,
275 fid, 1, &size, (const void **)&name);
277 EXPORT_SYMBOL(out_xattr_del_pack);
280 int out_index_insert_pack(const struct lu_env *env,
281 struct object_update *update,
282 size_t max_update_size, const struct lu_fid *fid,
283 const struct dt_rec *rec, const struct dt_key *key)
285 struct dt_insert_rec *rec1 = (struct dt_insert_rec *)rec;
286 struct lu_fid rec_fid;
287 __u32 type = cpu_to_le32(rec1->rec_type);
288 __u16 sizes[3] = { strlen((char *)key) + 1,
291 const void *bufs[3] = { (char *)key,
295 fid_cpu_to_le(&rec_fid, rec1->rec_fid);
297 return out_update_pack(env, update, max_update_size, OUT_INDEX_INSERT,
298 fid, ARRAY_SIZE(sizes), sizes, bufs);
300 EXPORT_SYMBOL(out_index_insert_pack);
302 int out_index_delete_pack(const struct lu_env *env,
303 struct object_update *update,
304 size_t max_update_size, const struct lu_fid *fid,
305 const struct dt_key *key)
307 __u16 size = strlen((char *)key) + 1;
308 const void *buf = key;
310 return out_update_pack(env, update, max_update_size, OUT_INDEX_DELETE,
311 fid, 1, &size, &buf);
313 EXPORT_SYMBOL(out_index_delete_pack);
315 int out_object_destroy_pack(const struct lu_env *env,
316 struct object_update *update,
317 size_t max_update_size, const struct lu_fid *fid)
319 return out_update_pack(env, update, max_update_size, OUT_DESTROY, fid,
322 EXPORT_SYMBOL(out_object_destroy_pack);
324 int out_write_pack(const struct lu_env *env, struct object_update *update,
325 size_t max_update_size, const struct lu_fid *fid,
326 const struct lu_buf *buf, __u64 pos)
328 __u16 sizes[2] = {buf->lb_len, sizeof(pos)};
329 const void *bufs[2] = {(char *)buf->lb_buf, (char *)&pos};
332 pos = cpu_to_le64(pos);
334 rc = out_update_pack(env, update, max_update_size, OUT_WRITE, fid,
335 ARRAY_SIZE(sizes), sizes, bufs);
338 EXPORT_SYMBOL(out_write_pack);
341 * Pack various readonly updates into the update_buffer.
343 * The following update funcs are only used by read-only ops, lookup,
344 * getattr etc, so it does not need transaction here. Currently they
345 * are only used by OSP.
347 * \param[in] env execution environment
348 * \param[in] fid fid of this object for the update
349 * \param[in] ubuf update buffer
351 * \retval = 0 pack succeed.
354 int out_index_lookup_pack(const struct lu_env *env,
355 struct object_update *update,
356 size_t max_update_size, const struct lu_fid *fid,
357 struct dt_rec *rec, const struct dt_key *key)
359 const void *name = key;
360 __u16 size = strlen((char *)name) + 1;
362 return out_update_pack(env, update, max_update_size, OUT_INDEX_LOOKUP,
363 fid, 1, &size, &name);
365 EXPORT_SYMBOL(out_index_lookup_pack);
367 int out_attr_get_pack(const struct lu_env *env, struct object_update *update,
368 size_t max_update_size, const struct lu_fid *fid)
370 return out_update_pack(env, update, max_update_size, OUT_ATTR_GET,
373 EXPORT_SYMBOL(out_attr_get_pack);
375 int out_xattr_get_pack(const struct lu_env *env, struct object_update *update,
376 size_t max_update_size, const struct lu_fid *fid,
381 LASSERT(name != NULL);
382 size = strlen(name) + 1;
384 return out_update_pack(env, update, max_update_size, OUT_XATTR_GET,
385 fid, 1, &size, (const void **)&name);
387 EXPORT_SYMBOL(out_xattr_get_pack);