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dsl_dir.c (209099) dsl_dir.c (209962)
1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE

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14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21/*
1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE

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14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21/*
22 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26#include <sys/dmu.h>
27#include <sys/dmu_objset.h>
28#include <sys/dmu_tx.h>
29#include <sys/dsl_dataset.h>
30#include <sys/dsl_dir.h>

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221 mutex_exit(&dd->dd_lock);
222 } else {
223 result += strlen(dd->dd_myname);
224 }
225
226 return (result);
227}
228
23 * Use is subject to license terms.
24 */
25
26#include <sys/dmu.h>
27#include <sys/dmu_objset.h>
28#include <sys/dmu_tx.h>
29#include <sys/dsl_dataset.h>
30#include <sys/dsl_dir.h>

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221 mutex_exit(&dd->dd_lock);
222 } else {
223 result += strlen(dd->dd_myname);
224 }
225
226 return (result);
227}
228
229int
230dsl_dir_is_private(dsl_dir_t *dd)
231{
232 int rv = FALSE;
233
234 if (dd->dd_parent && dsl_dir_is_private(dd->dd_parent))
235 rv = TRUE;
236 if (dataset_name_hidden(dd->dd_myname))
237 rv = TRUE;
238 return (rv);
239}
240
241
242static int
243getcomponent(const char *path, char *component, const char **nextp)
244{
245 char *p;
229static int
230getcomponent(const char *path, char *component, const char **nextp)
231{
232 char *p;
246 if (path == NULL)
233 if ((path == NULL) || (path[0] == '\0'))
247 return (ENOENT);
248 /* This would be a good place to reserve some namespace... */
249 p = strpbrk(path, "/@");
250 if (p && (p[1] == '/' || p[1] == '@')) {
251 /* two separators in a row */
252 return (EINVAL);
253 }
254 if (p == NULL || p == path) {

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1071
1072int
1073dsl_dir_set_reservation_check(void *arg1, void *arg2, dmu_tx_t *tx)
1074{
1075 dsl_dir_t *dd = arg1;
1076 uint64_t *reservationp = arg2;
1077 uint64_t new_reservation = *reservationp;
1078 uint64_t used, avail;
234 return (ENOENT);
235 /* This would be a good place to reserve some namespace... */
236 p = strpbrk(path, "/@");
237 if (p && (p[1] == '/' || p[1] == '@')) {
238 /* two separators in a row */
239 return (EINVAL);
240 }
241 if (p == NULL || p == path) {

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1058
1059int
1060dsl_dir_set_reservation_check(void *arg1, void *arg2, dmu_tx_t *tx)
1061{
1062 dsl_dir_t *dd = arg1;
1063 uint64_t *reservationp = arg2;
1064 uint64_t new_reservation = *reservationp;
1065 uint64_t used, avail;
1079 int64_t delta;
1080
1066
1081 if (new_reservation > INT64_MAX)
1082 return (EOVERFLOW);
1083
1084 /*
1085 * If we are doing the preliminary check in open context, the
1086 * space estimates may be inaccurate.
1087 */
1088 if (!dmu_tx_is_syncing(tx))
1089 return (0);
1090
1091 mutex_enter(&dd->dd_lock);
1092 used = dd->dd_phys->dd_used_bytes;
1067 /*
1068 * If we are doing the preliminary check in open context, the
1069 * space estimates may be inaccurate.
1070 */
1071 if (!dmu_tx_is_syncing(tx))
1072 return (0);
1073
1074 mutex_enter(&dd->dd_lock);
1075 used = dd->dd_phys->dd_used_bytes;
1093 delta = MAX(used, new_reservation) -
1094 MAX(used, dd->dd_phys->dd_reserved);
1095 mutex_exit(&dd->dd_lock);
1096
1097 if (dd->dd_parent) {
1098 avail = dsl_dir_space_available(dd->dd_parent,
1099 NULL, 0, FALSE);
1100 } else {
1101 avail = dsl_pool_adjustedsize(dd->dd_pool, B_FALSE) - used;
1102 }
1103
1076 mutex_exit(&dd->dd_lock);
1077
1078 if (dd->dd_parent) {
1079 avail = dsl_dir_space_available(dd->dd_parent,
1080 NULL, 0, FALSE);
1081 } else {
1082 avail = dsl_pool_adjustedsize(dd->dd_pool, B_FALSE) - used;
1083 }
1084
1104 if (delta > 0 && delta > avail)
1105 return (ENOSPC);
1106 if (delta > 0 && dd->dd_phys->dd_quota > 0 &&
1107 new_reservation > dd->dd_phys->dd_quota)
1108 return (ENOSPC);
1085 if (MAX(used, new_reservation) > MAX(used, dd->dd_phys->dd_reserved)) {
1086 uint64_t delta = MAX(used, new_reservation) -
1087 MAX(used, dd->dd_phys->dd_reserved);
1088
1089 if (delta > avail)
1090 return (ENOSPC);
1091 if (dd->dd_phys->dd_quota > 0 &&
1092 new_reservation > dd->dd_phys->dd_quota)
1093 return (ENOSPC);
1094 }
1095
1109 return (0);
1110}
1111
1112/* ARGSUSED */
1113static void
1114dsl_dir_set_reservation_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx)
1115{
1116 dsl_dir_t *dd = arg1;

--- 214 unchanged lines hidden --- 		1096 return (0);
1097}
1098
1099/* ARGSUSED */
1100static void
1101dsl_dir_set_reservation_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx)
1102{
1103 dsl_dir_t *dd = arg1;

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