1 /* $NetBSD: quota_cursor.c,v 1.3 2012/01/09 15:41:58 dholland Exp $ */ 2 /*- 3 * Copyright (c) 2011 The NetBSD Foundation, Inc. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to The NetBSD Foundation 7 * by David A. Holland. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include <sys/cdefs.h> 32 __RCSID("$NetBSD: quota_cursor.c,v 1.3 2012/01/09 15:41:58 dholland Exp $"); 33 34 #include <stdlib.h> 35 #include <errno.h> 36 37 #include <quota.h> 38 #include "quotapvt.h" 39 40 struct quotacursor * 41 quota_opencursor(struct quotahandle *qh) 42 { 43 struct quotacursor *qc; 44 int8_t version; 45 int serrno; 46 47 if (qh->qh_isnfs) { 48 errno = EOPNOTSUPP; 49 return NULL; 50 } 51 52 if (__quota_proplib_getversion(qh, &version)) { 53 return NULL; 54 } 55 56 /* 57 * For the time being at least the version 1 kernel code 58 * cannot do cursors. 59 */ 60 if (version == 1 && !qh->qh_hasoldfiles) { 61 if (__quota_oldfiles_initialize(qh)) { 62 return NULL; 63 } 64 } 65 66 qc = malloc(sizeof(*qc)); 67 if (qc == NULL) { 68 return NULL; 69 } 70 71 qc->qc_qh = qh; 72 73 if (version == 1) { 74 qc->qc_type = QC_OLDFILES; 75 qc->u.qc_oldfiles = __quota_oldfiles_cursor_create(qh); 76 if (qc->u.qc_oldfiles == NULL) { 77 serrno = errno; 78 free(qc); 79 errno = serrno; 80 return NULL; 81 } 82 } else { 83 qc->qc_type = QC_PROPLIB; 84 qc->u.qc_proplib = __quota_proplib_cursor_create(); 85 if (qc->u.qc_proplib == NULL) { 86 serrno = errno; 87 free(qc); 88 errno = serrno; 89 return NULL; 90 } 91 } 92 return qc; 93 } 94 95 void 96 quotacursor_close(struct quotacursor *qc) 97 { 98 switch (qc->qc_type) { 99 case QC_PROPLIB: 100 __quota_proplib_cursor_destroy(qc->u.qc_proplib); 101 break; 102 case QC_OLDFILES: 103 __quota_oldfiles_cursor_destroy(qc->u.qc_oldfiles); 104 break; 105 } 106 free(qc); 107 } 108 109 int 110 quotacursor_skipidtype(struct quotacursor *qc, unsigned idtype) 111 { 112 switch (qc->qc_type) { 113 case QC_PROPLIB: 114 return __quota_proplib_cursor_skipidtype(qc->u.qc_proplib, 115 idtype); 116 case QC_OLDFILES: 117 return __quota_oldfiles_cursor_skipidtype(qc->u.qc_oldfiles, 118 idtype); 119 } 120 errno = EINVAL; 121 return -1; 122 } 123 124 int 125 quotacursor_get(struct quotacursor *qc, 126 struct quotakey *qk_ret, struct quotaval *qv_ret) 127 { 128 switch (qc->qc_type) { 129 case QC_PROPLIB: 130 return __quota_proplib_cursor_get(qc->qc_qh, qc->u.qc_proplib, 131 qk_ret, qv_ret); 132 case QC_OLDFILES: 133 return __quota_oldfiles_cursor_get(qc->qc_qh, 134 qc->u.qc_oldfiles, 135 qk_ret, qv_ret); 136 } 137 errno = EINVAL; 138 return -1; 139 } 140 141 int 142 quotacursor_getn(struct quotacursor *qc, 143 struct quotakey *keys, struct quotaval *vals, 144 unsigned maxnum) 145 { 146 switch (qc->qc_type) { 147 case QC_PROPLIB: 148 return __quota_proplib_cursor_getn(qc->qc_qh, qc->u.qc_proplib, 149 keys, vals, maxnum); 150 case QC_OLDFILES: 151 return __quota_oldfiles_cursor_getn(qc->qc_qh, 152 qc->u.qc_oldfiles, 153 keys, vals, maxnum); 154 } 155 errno = EINVAL; 156 return -1; 157 } 158 159 int 160 quotacursor_atend(struct quotacursor *qc) 161 { 162 switch (qc->qc_type) { 163 case QC_PROPLIB: 164 return __quota_proplib_cursor_atend(qc->qc_qh, 165 qc->u.qc_proplib); 166 case QC_OLDFILES: 167 return __quota_oldfiles_cursor_atend(qc->u.qc_oldfiles); 168 } 169 errno = EINVAL; 170 return -1; 171 } 172 173 int 174 quotacursor_rewind(struct quotacursor *qc) 175 { 176 switch (qc->qc_type) { 177 case QC_PROPLIB: 178 return __quota_proplib_cursor_rewind(qc->u.qc_proplib); 179 case QC_OLDFILES: 180 return __quota_oldfiles_cursor_rewind(qc->u.qc_oldfiles); 181 } 182 errno = EINVAL; 183 return -1; 184 } 185