lib/dns/rriterator.c

43 dns_rriterator_init(dns_rriterator_t *it, dns_db_t *db, dns_dbversion_t *ver,
47 	it->magic = RRITERATOR_MAGIC;
48 	it->db = db;
49 	it->dbit = NULL;
50 	it->ver = ver;
51 	it->now = now;
52 	it->node = NULL;
53 	result = dns_db_createiterator(it->db, 0, &it->dbit);
56 	it->rdatasetit = NULL;
57 	dns_rdata_init(&it->rdata);
58 	dns_rdataset_init(&it->rdataset);
59 	dns_fixedname_init(&it->fixedname);
60 	INSIST(! dns_rdataset_isassociated(&it->rdataset));
61 	it->result = ISC_R_SUCCESS;
62 	return (it->result);
66 dns_rriterator_first(dns_rriterator_t *it) {
67 	REQUIRE(VALID_RRITERATOR(it));
69 	if (dns_rdataset_isassociated(&it->rdataset))
70 		dns_rdataset_disassociate(&it->rdataset);
71 	if (it->rdatasetit != NULL)
72 		dns_rdatasetiter_destroy(&it->rdatasetit);
73 	if (it->node != NULL)
74 		dns_db_detachnode(it->db, &it->node);
75 	it->result = dns_dbiterator_first(it->dbit);
81 	while (it->result == ISC_R_SUCCESS) {
82 		it->result = dns_dbiterator_current(it->dbit, &it->node,
83 					   dns_fixedname_name(&it->fixedname));
84 		if (it->result != ISC_R_SUCCESS)
85 			return (it->result);
87 		it->result = dns_db_allrdatasets(it->db, it->node, it->ver,
88 						 it->now, &it->rdatasetit);
89 		if (it->result != ISC_R_SUCCESS)
90 			return (it->result);
92 		it->result = dns_rdatasetiter_first(it->rdatasetit);
93 		if (it->result != ISC_R_SUCCESS) {
97 			dns_rdatasetiter_destroy(&it->rdatasetit);
98 			dns_db_detachnode(it->db, &it->node);
99 			it->result = dns_dbiterator_next(it->dbit);
102 		dns_rdatasetiter_current(it->rdatasetit, &it->rdataset);
103 		it->rdataset.attributes |= DNS_RDATASETATTR_LOADORDER;
104 		it->result = dns_rdataset_first(&it->rdataset);
105 		return (it->result);
107 	return (it->result);
111 dns_rriterator_nextrrset(dns_rriterator_t *it) {
112 	REQUIRE(VALID_RRITERATOR(it));
113 	if (dns_rdataset_isassociated(&it->rdataset))
114 		dns_rdataset_disassociate(&it->rdataset);
115 	it->result = dns_rdatasetiter_next(it->rdatasetit);
120 	while (it->result == ISC_R_NOMORE) {
121 		dns_rdatasetiter_destroy(&it->rdatasetit);
122 		dns_db_detachnode(it->db, &it->node);
123 		it->result = dns_dbiterator_next(it->dbit);
124 		if (it->result == ISC_R_NOMORE) {
126 			return (it->result);
128 		if (it->result != ISC_R_SUCCESS)
129 			return (it->result);
130 		it->result = dns_dbiterator_current(it->dbit, &it->node,
131 					   dns_fixedname_name(&it->fixedname));
132 		if (it->result != ISC_R_SUCCESS)
133 			return (it->result);
134 		it->result = dns_db_allrdatasets(it->db, it->node, it->ver,
135 						 it->now, &it->rdatasetit);
136 		if (it->result != ISC_R_SUCCESS)
137 			return (it->result);
138 		it->result = dns_rdatasetiter_first(it->rdatasetit);
140 	if (it->result != ISC_R_SUCCESS)
141 		return (it->result);
142 	dns_rdatasetiter_current(it->rdatasetit, &it->rdataset);
143 	it->rdataset.attributes |= DNS_RDATASETATTR_LOADORDER;
144 	it->result = dns_rdataset_first(&it->rdataset);
145 	return (it->result);
149 dns_rriterator_next(dns_rriterator_t *it) {
150 	REQUIRE(VALID_RRITERATOR(it));
151 	if (it->result != ISC_R_SUCCESS)
152 		return (it->result);
154 	INSIST(it->dbit != NULL);
155 	INSIST(it->node != NULL);
156 	INSIST(it->rdatasetit != NULL);
158 	it->result = dns_rdataset_next(&it->rdataset);
159 	if (it->result == ISC_R_NOMORE)
160 		return (dns_rriterator_nextrrset(it));
161 	return (it->result);
165 dns_rriterator_pause(dns_rriterator_t *it) {
166 	REQUIRE(VALID_RRITERATOR(it));
167 	RUNTIME_CHECK(dns_dbiterator_pause(it->dbit) == ISC_R_SUCCESS);
171 dns_rriterator_destroy(dns_rriterator_t *it) {
172 	REQUIRE(VALID_RRITERATOR(it));
173 	if (dns_rdataset_isassociated(&it->rdataset))
174 		dns_rdataset_disassociate(&it->rdataset);
175 	if (it->rdatasetit != NULL)
176 		dns_rdatasetiter_destroy(&it->rdatasetit);
177 	if (it->node != NULL)
178 		dns_db_detachnode(it->db, &it->node);
179 	dns_dbiterator_destroy(&it->dbit);
183 dns_rriterator_current(dns_rriterator_t *it, dns_name_t **name,
188 	REQUIRE(VALID_RRITERATOR(it));
189 	REQUIRE(it->result == ISC_R_SUCCESS);
193 	*name = dns_fixedname_name(&it->fixedname);
194 	*ttl = it->rdataset.ttl;
196 	dns_rdata_reset(&it->rdata);
197 	dns_rdataset_current(&it->rdataset, &it->rdata);
200 		*rdataset = &it->rdataset;
203 		*rdata = &it->rdata;