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, write to the
18 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 * Boston, MA 021110-1307, USA
24 * Copyright (c) 2012, 2017, Intel Corporation.
25 * Use is subject to license terms.
27 * Author: Johann Lombardi <johann.lombardi@intel.com>
28 * Author: Niu Yawei <yawei.niu@intel.com>
31 #define DEBUG_SUBSYSTEM S_LQUOTA
33 #include <linux/version.h>
34 #include <linux/module.h>
35 #include <linux/init.h>
37 #include "lquota_internal.h"
39 struct kmem_cache *lqe_kmem;
41 struct lu_kmem_descr lquota_caches[] = {
43 .ckd_cache = &lqe_kmem,
44 .ckd_name = "lqe_kmem",
45 .ckd_size = sizeof(struct lquota_entry)
52 /* register lquota key */
53 LU_KEY_INIT_FINI(lquota, struct lquota_thread_info);
54 LU_CONTEXT_KEY_DEFINE(lquota, LCT_MD_THREAD | LCT_DT_THREAD | LCT_LOCAL);
55 LU_KEY_INIT_GENERIC(lquota);
57 static inline __u32 qtype2acct_oid(int qtype)
63 return ACCT_GROUP_OID;
65 return ACCT_PROJECT_OID;
68 return ACCT_GROUP_OID;
72 * Look-up accounting object to collect space usage information for user
75 * \param env - is the environment passed by the caller
76 * \param dev - is the dt_device storing the accounting object
77 * \param type - is the quota type, either USRQUOTA or GRPQUOTA
79 struct dt_object *acct_obj_lookup(const struct lu_env *env,
80 struct dt_device *dev, int type)
82 struct lquota_thread_info *qti = lquota_info(env);
83 struct dt_object *obj = NULL;
86 lu_local_obj_fid(&qti->qti_fid, qtype2acct_oid(type));
88 /* lookup the accounting object */
89 obj = dt_locate(env, dev, &qti->qti_fid);
93 if (!dt_object_exists(obj)) {
94 dt_object_put(env, obj);
95 RETURN(ERR_PTR(-ENOENT));
98 if (obj->do_index_ops == NULL) {
101 /* set up indexing operations */
102 rc = obj->do_ops->do_index_try(env, obj, &dt_acct_features);
104 CERROR("%s: failed to set up indexing operations for %s"
105 " acct object rc:%d\n",
106 dev->dd_lu_dev.ld_obd->obd_name,
107 qtype_name(type), rc);
108 dt_object_put(env, obj);
116 * Initialize slave index object to collect local quota limit for user or group.
118 * \param env - is the environment passed by the caller
119 * \param dev - is the dt_device storing the slave index object
120 * \param pool - is the pool type, either LQUOTA_RES_MD or LQUOTA_RES_DT
121 * \param type - is the quota type, either USRQUOTA or GRPQUOTA
123 static struct dt_object *quota_obj_lookup(const struct lu_env *env,
124 struct dt_device *dev, int pool,
127 struct lquota_thread_info *qti = lquota_info(env);
128 struct dt_object *obj = NULL;
132 is_md = lu_device_is_md(dev->dd_lu_dev.ld_site->ls_top_dev);
133 if ((is_md && pool == LQUOTA_RES_MD) ||
134 (!is_md && pool == LQUOTA_RES_DT))
135 qti->qti_fid.f_oid = qtype2slv_oid(type);
137 qti->qti_fid.f_oid = pool << 16 | qtype2slv_oid(type);
139 qti->qti_fid.f_seq = FID_SEQ_QUOTA;
140 qti->qti_fid.f_ver = 0;
142 /* lookup the quota object */
143 obj = dt_locate(env, dev, &qti->qti_fid);
147 if (!dt_object_exists(obj)) {
148 dt_object_put(env, obj);
149 RETURN(ERR_PTR(-ENOENT));
152 if (obj->do_index_ops == NULL) {
155 /* set up indexing operations */
156 rc = obj->do_ops->do_index_try(env, obj,
157 &dt_quota_slv_features);
159 CERROR("%s: failed to set up indexing operations for %s"
160 " slave index object rc:%d\n",
161 dev->dd_lu_dev.ld_obd->obd_name,
162 qtype_name(type), rc);
163 dt_object_put(env, obj);
171 * Helper routine to retrieve slave information.
172 * This function converts a quotactl request into quota/accounting object
173 * operations. It is independant of the slave stack which is only accessible
174 * from the OSD layer.
176 * \param env - is the environment passed by the caller
177 * \param dev - is the dt_device this quotactl is executed on
178 * \param oqctl - is the quotactl request
180 int lquotactl_slv(const struct lu_env *env, struct dt_device *dev,
181 struct obd_quotactl *oqctl)
183 struct lquota_thread_info *qti = lquota_info(env);
185 struct dt_object *obj, *obj_aux = NULL;
186 struct obd_dqblk *dqblk = &oqctl->qc_dqblk;
190 if (oqctl->qc_cmd != Q_GETOQUOTA) {
191 /* as in many other places, dev->dd_lu_dev.ld_obd->obd_name
192 * point to an invalid obd_name, to be fixed in LU-1574 */
193 CERROR("%s: Unsupported quotactl command: %x\n",
194 dev->dd_lu_dev.ld_obd->obd_name, oqctl->qc_cmd);
198 if (oqctl->qc_type < 0 || oqctl->qc_type >= LL_MAXQUOTAS)
201 /* qc_id is a 32-bit field while a key has 64 bits */
204 /* Step 1: collect accounting information */
206 obj = acct_obj_lookup(env, dev, oqctl->qc_type);
209 if (obj->do_index_ops == NULL)
210 GOTO(out, rc = -EINVAL);
212 /* lookup record storing space accounting information for this ID */
213 rc = dt_lookup(env, obj, (struct dt_rec *)&qti->qti_acct_rec,
214 (struct dt_key *)&key);
218 memset(&oqctl->qc_dqblk, 0, sizeof(struct obd_dqblk));
219 dqblk->dqb_curspace = qti->qti_acct_rec.bspace;
220 dqblk->dqb_curinodes = qti->qti_acct_rec.ispace;
221 dqblk->dqb_valid = QIF_USAGE;
223 dt_object_put(env, obj);
225 /* Step 2: collect enforcement information */
227 if (lu_device_is_md(dev->dd_lu_dev.ld_site->ls_top_dev))
228 obj = quota_obj_lookup(env, dev, LQUOTA_RES_MD, oqctl->qc_type);
230 obj = quota_obj_lookup(env, dev, LQUOTA_RES_DT, oqctl->qc_type);
234 if (obj->do_index_ops == NULL)
237 memset(&qti->qti_slv_rec, 0, sizeof(qti->qti_slv_rec));
238 /* lookup record storing enforcement information for this ID */
239 rc = dt_lookup(env, obj, (struct dt_rec *)&qti->qti_slv_rec,
240 (struct dt_key *)&key);
241 if (rc < 0 && rc != -ENOENT)
244 if (lu_device_is_md(dev->dd_lu_dev.ld_site->ls_top_dev)) {
245 dqblk->dqb_ihardlimit = qti->qti_slv_rec.qsr_granted;
246 dqblk->dqb_bhardlimit = 0;
248 obj_aux = quota_obj_lookup(env, dev, LQUOTA_RES_DT,
250 if (IS_ERR(obj_aux)) {
255 if (obj_aux->do_index_ops == NULL)
258 memset(&qti->qti_slv_rec, 0, sizeof(qti->qti_slv_rec));
259 rc = dt_lookup(env, obj_aux, (struct dt_rec *)&qti->qti_slv_rec,
260 (struct dt_key *)&key);
261 if (rc < 0 && rc != -ENOENT)
264 dqblk->dqb_bhardlimit = qti->qti_slv_rec.qsr_granted;
266 dqblk->dqb_ihardlimit = 0;
267 dqblk->dqb_bhardlimit = qti->qti_slv_rec.qsr_granted;
269 dqblk->dqb_valid |= QIF_LIMITS;
273 dt_object_put(env, obj);
275 dt_object_put(env, obj_aux);
278 EXPORT_SYMBOL(lquotactl_slv);
280 static inline __u8 qtype2lqtype(int qtype)
284 return LQUOTA_TYPE_USR;
286 return LQUOTA_TYPE_GRP;
288 return LQUOTA_TYPE_PRJ;
291 return LQUOTA_TYPE_GRP;
294 static inline int lqtype2qtype(int lqtype)
297 case LQUOTA_TYPE_USR:
299 case LQUOTA_TYPE_GRP:
301 case LQUOTA_TYPE_PRJ:
309 * Helper routine returning the FID associated with the global index storing
310 * quota settings for default storage pool, resource type \pool_type and
311 * the quota type \quota_type.
313 void lquota_generate_fid(struct lu_fid *fid, int pool_type, int quota_type)
315 __u8 lqtype = qtype2lqtype(quota_type);
317 fid->f_seq = FID_SEQ_QUOTA_GLB;
318 fid->f_oid = (lqtype << 24) | (pool_type << 16);
323 * Helper routine used to extract pool type and quota type from a
326 int lquota_extract_fid(const struct lu_fid *fid, int *pool_type,
332 if (fid->f_seq != FID_SEQ_QUOTA_GLB)
335 if (pool_type != NULL) {
336 lqtype = (fid->f_oid >> 16) & 0xffU;
337 if (lqtype >= LQUOTA_LAST_RES)
343 if (quota_type != NULL) {
344 lqtype = fid->f_oid >> 24;
345 if (lqtype >= LQUOTA_TYPE_MAX)
348 *quota_type = lqtype2qtype(lqtype);
354 static int __init lquota_init(void)
363 lquota_key_init_generic(&lquota_thread_key, NULL);
364 lu_context_key_register(&lquota_thread_key);
366 rc = lu_kmem_init(lquota_caches);
372 GOTO(out_caches, rc);
383 lu_kmem_fini(lquota_caches);
385 lu_context_key_degister(&lquota_thread_key);
389 static void __exit lquota_exit(void)
393 lu_kmem_fini(lquota_caches);
394 lu_context_key_degister(&lquota_thread_key);
397 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
398 MODULE_DESCRIPTION("Lustre Quota");
399 MODULE_VERSION(LUSTRE_VERSION_STRING);
400 MODULE_LICENSE("GPL");
402 module_init(lquota_init);
403 module_exit(lquota_exit);