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",
63 if (opc < ARRAY_SIZE(opc_str) && opc_str[opc] != NULL)
68 EXPORT_SYMBOL(update_op_str);
71 * Fill object update header
73 * Only fill the object update header, and parameters will be filled later
76 * \params[in] env execution environment
77 * \params[in] update object update to be filled
78 * \params[in] max_update_size maximum object update size, if the current
79 * update length equals or exceeds the size, it
81 * \params[in] update_op update type
82 * \params[in] fid object FID of the update
83 * \params[in] params_count the count of the update parameters
84 * \params[in] params_sizes the length of each parameters
86 * \retval 0 if packing succeeds.
87 * \retval -E2BIG if packing exceeds the maximum length.
89 int out_update_header_pack(const struct lu_env *env,
90 struct object_update *update, size_t max_update_size,
91 enum update_type update_op, const struct lu_fid *fid,
92 unsigned int param_count, __u16 *params_sizes)
94 struct object_update_param *param;
98 /* Check whether the packing exceeding the maxima update length */
99 update_size = sizeof(*update);
100 for (i = 0; i < param_count; i++)
101 update_size += cfs_size_round(sizeof(*param) + params_sizes[i]);
103 if (unlikely(update_size >= max_update_size))
106 update->ou_fid = *fid;
107 update->ou_type = update_op;
108 update->ou_params_count = param_count;
109 param = &update->ou_params[0];
110 for (i = 0; i < param_count; i++) {
111 param->oup_len = params_sizes[i];
112 param = (struct object_update_param *)((char *)param +
113 object_update_param_size(param));
120 * Packs one update into the update_buffer.
122 * \param[in] env execution environment
123 * \param[in] update update to be packed
124 * \param[in] max_update_size *maximum size of \a update
125 * \param[in] op update operation (enum update_type)
126 * \param[in] fid object FID for this update
127 * \param[in] param_count number of parameters for this update
128 * \param[in] param_sizes array of parameters length of this update
129 * \param[in] param_bufs parameter buffers
131 * \retval = 0 if updates packing succeeds
132 * \retval negative errno if updates packing fails
134 int out_update_pack(const struct lu_env *env, struct object_update *update,
135 size_t max_update_size, enum update_type op,
136 const struct lu_fid *fid, unsigned int param_count,
137 __u16 *param_sizes, const void **param_bufs)
139 struct object_update_param *param;
144 rc = out_update_header_pack(env, update, max_update_size, op, fid,
145 param_count, param_sizes);
149 param = &update->ou_params[0];
150 for (i = 0; i < param_count; i++) {
151 memcpy(¶m->oup_buf[0], param_bufs[i], param_sizes[i]);
152 param = (struct object_update_param *)((char *)param +
153 object_update_param_size(param));
158 EXPORT_SYMBOL(out_update_pack);
161 * Pack various updates into the update_buffer.
163 * The following functions pack different updates into the update_buffer
164 * So parameters of these API is basically same as its correspondent OSD/OSP
165 * API, for detail description of these parameters see osd_handler.c or
168 * \param[in] env execution environment
169 * \param[in] ubuf update buffer
170 * \param[in] fid fid of this object for the update
172 * \retval 0 if insertion succeeds.
173 * \retval negative errno if insertion fails.
175 int out_create_pack(const struct lu_env *env, struct object_update *update,
176 size_t max_update_size, const struct lu_fid *fid,
177 const struct lu_attr *attr, struct dt_allocation_hint *hint,
178 struct dt_object_format *dof)
181 __u16 sizes[2] = {sizeof(*obdo), 0};
183 const struct lu_fid *parent_fid = NULL;
187 if (hint != NULL && hint->dah_parent) {
188 parent_fid = lu_object_fid(&hint->dah_parent->do_lu);
189 sizes[1] = sizeof(*parent_fid);
193 rc = out_update_header_pack(env, update, max_update_size, OUT_CREATE,
194 fid, buf_count, sizes);
198 obdo = object_update_param_get(update, 0, NULL);
199 LASSERT(obdo != NULL);
201 obdo_from_la(obdo, attr, attr->la_valid);
202 lustre_set_wire_obdo(NULL, obdo, obdo);
204 if (parent_fid != NULL) {
207 tmp = object_update_param_get(update, 1, NULL);
208 LASSERT(tmp != NULL);
209 fid_cpu_to_le(tmp, parent_fid);
214 EXPORT_SYMBOL(out_create_pack);
216 int out_ref_del_pack(const struct lu_env *env, struct object_update *update,
217 size_t max_update_size, const struct lu_fid *fid)
219 return out_update_pack(env, update, max_update_size, OUT_REF_DEL, fid,
222 EXPORT_SYMBOL(out_ref_del_pack);
224 int out_ref_add_pack(const struct lu_env *env, struct object_update *update,
225 size_t max_update_size, const struct lu_fid *fid)
227 return out_update_pack(env, update, max_update_size, OUT_REF_ADD, fid,
230 EXPORT_SYMBOL(out_ref_add_pack);
232 int out_attr_set_pack(const struct lu_env *env, struct object_update *update,
233 size_t max_update_size, const struct lu_fid *fid,
234 const struct lu_attr *attr)
237 __u16 size = sizeof(*obdo);
241 rc = out_update_header_pack(env, update, max_update_size,
242 OUT_ATTR_SET, fid, 1, &size);
246 obdo = object_update_param_get(update, 0, NULL);
247 LASSERT(obdo != NULL);
249 obdo_from_la(obdo, attr, attr->la_valid);
250 lustre_set_wire_obdo(NULL, obdo, obdo);
254 EXPORT_SYMBOL(out_attr_set_pack);
256 int out_xattr_set_pack(const struct lu_env *env, struct object_update *update,
257 size_t max_update_size, const struct lu_fid *fid,
258 const struct lu_buf *buf, const char *name, __u32 flag)
260 __u16 sizes[3] = {strlen(name) + 1, buf->lb_len, sizeof(flag)};
261 const void *bufs[3] = {(char *)name, (char *)buf->lb_buf,
264 return out_update_pack(env, update, max_update_size, OUT_XATTR_SET,
265 fid, ARRAY_SIZE(sizes), sizes, bufs);
267 EXPORT_SYMBOL(out_xattr_set_pack);
269 int out_xattr_del_pack(const struct lu_env *env, struct object_update *update,
270 size_t max_update_size, const struct lu_fid *fid,
273 __u16 size = strlen(name) + 1;
275 return out_update_pack(env, update, max_update_size, OUT_XATTR_DEL,
276 fid, 1, &size, (const void **)&name);
278 EXPORT_SYMBOL(out_xattr_del_pack);
281 int out_index_insert_pack(const struct lu_env *env,
282 struct object_update *update,
283 size_t max_update_size, const struct lu_fid *fid,
284 const struct dt_rec *rec, const struct dt_key *key)
286 struct dt_insert_rec *rec1 = (struct dt_insert_rec *)rec;
287 struct lu_fid rec_fid;
288 __u32 type = cpu_to_le32(rec1->rec_type);
289 __u16 sizes[3] = { strlen((char *)key) + 1,
292 const void *bufs[3] = { (char *)key,
296 fid_cpu_to_le(&rec_fid, rec1->rec_fid);
298 return out_update_pack(env, update, max_update_size, OUT_INDEX_INSERT,
299 fid, ARRAY_SIZE(sizes), sizes, bufs);
301 EXPORT_SYMBOL(out_index_insert_pack);
303 int out_index_delete_pack(const struct lu_env *env,
304 struct object_update *update,
305 size_t max_update_size, const struct lu_fid *fid,
306 const struct dt_key *key)
308 __u16 size = strlen((char *)key) + 1;
309 const void *buf = key;
311 return out_update_pack(env, update, max_update_size, OUT_INDEX_DELETE,
312 fid, 1, &size, &buf);
314 EXPORT_SYMBOL(out_index_delete_pack);
316 int out_object_destroy_pack(const struct lu_env *env,
317 struct object_update *update,
318 size_t max_update_size, const struct lu_fid *fid)
320 return out_update_pack(env, update, max_update_size, OUT_DESTROY, fid,
323 EXPORT_SYMBOL(out_object_destroy_pack);
325 int out_write_pack(const struct lu_env *env, struct object_update *update,
326 size_t max_update_size, const struct lu_fid *fid,
327 const struct lu_buf *buf, __u64 pos)
329 __u16 sizes[2] = {buf->lb_len, sizeof(pos)};
330 const void *bufs[2] = {(char *)buf->lb_buf, (char *)&pos};
333 pos = cpu_to_le64(pos);
335 rc = out_update_pack(env, update, max_update_size, OUT_WRITE, fid,
336 ARRAY_SIZE(sizes), sizes, bufs);
339 EXPORT_SYMBOL(out_write_pack);
342 * Pack various readonly updates into the update_buffer.
344 * The following update funcs are only used by read-only ops, lookup,
345 * getattr etc, so it does not need transaction here. Currently they
346 * are only used by OSP.
348 * \param[in] env execution environment
349 * \param[in] fid fid of this object for the update
350 * \param[in] ubuf update buffer
352 * \retval = 0 pack succeed.
355 int out_index_lookup_pack(const struct lu_env *env,
356 struct object_update *update,
357 size_t max_update_size, const struct lu_fid *fid,
358 struct dt_rec *rec, const struct dt_key *key)
360 const void *name = key;
361 __u16 size = strlen((char *)name) + 1;
363 return out_update_pack(env, update, max_update_size, OUT_INDEX_LOOKUP,
364 fid, 1, &size, &name);
366 EXPORT_SYMBOL(out_index_lookup_pack);
368 int out_attr_get_pack(const struct lu_env *env, struct object_update *update,
369 size_t max_update_size, const struct lu_fid *fid)
371 return out_update_pack(env, update, max_update_size, OUT_ATTR_GET,
374 EXPORT_SYMBOL(out_attr_get_pack);
376 int out_xattr_get_pack(const struct lu_env *env, struct object_update *update,
377 size_t max_update_size, const struct lu_fid *fid,
382 LASSERT(name != NULL);
383 size = strlen(name) + 1;
385 return out_update_pack(env, update, max_update_size, OUT_XATTR_GET,
386 fid, 1, &size, (const void **)&name);
388 EXPORT_SYMBOL(out_xattr_get_pack);
390 int out_read_pack(const struct lu_env *env, struct object_update *update,
391 size_t max_update_length, const struct lu_fid *fid,
392 size_t size, loff_t pos)
394 __u16 sizes[2] = {sizeof(size), sizeof(pos)};
395 const void *bufs[2] = {&size, &pos};
397 size = cpu_to_le64(size);
398 pos = cpu_to_le64(pos);
400 return out_update_pack(env, update, max_update_length, OUT_READ, fid,
401 ARRAY_SIZE(sizes), sizes, bufs);
403 EXPORT_SYMBOL(out_read_pack);