2 * $Id: cnid_add.c,v 1.32 2003-01-04 20:49:33 jmarcus Exp $
4 * Copyright (c) 1999. Adrian Sun (asun@zoology.washington.edu)
5 * All Rights Reserved. See COPYRIGHT.
7 * cnid_add (db, dev, ino, did, name, hint):
8 * add a name to the CNID database. we use both dev/ino and did/name
9 * to keep track of things.
14 #endif /* HAVE_CONFIG_H */
18 #include <sys/param.h>
23 #endif /* HAVE_UNISTD_H */
26 #endif /* HAVE_FCNTL_H */
28 #include <atalk/logger.h>
29 #ifdef HAVE_SYS_TIME_H
31 #endif /* HAVE_SYS_TIME_H */
34 #include <netatalk/endian.h>
36 #include <atalk/adouble.h>
37 #include <atalk/cnid.h>
38 #include <atalk/util.h>
40 #include "cnid_private.h"
44 #endif /* CNID_DB_CDB */
46 /* add an entry to the CNID databases. we do this as a transaction
47 * to prevent messiness. */
48 static int add_cnid(CNID_private *db, DBT *key, DBT *data) {
52 #endif /* CNID_DB_CDB */
55 memset(&altkey, 0, sizeof(altkey));
56 memset(&altdata, 0, sizeof(altdata));
60 if ((rc = txn_begin(db->dbenv, NULL, &tid, 0)) != 0) {
63 #endif /* CNID_DB_CDB */
66 if ((rc = db->db_cnid->put(db->db_cnid, tid, key, data, DB_NOOVERWRITE))) {
68 if (rc == DB_LOCK_DEADLOCK) {
69 if ((ret = txn_abort(tid)) != 0) {
74 #endif /* CNID_DB_CDB */
78 /* dev/ino database */
79 altkey.data = data->data;
80 altkey.size = CNID_DEVINO_LEN;
81 altdata.data = key->data;
82 altdata.size = key->size;
83 if ((rc = db->db_devino->put(db->db_devino, tid, &altkey, &altdata, 0))) {
85 if (rc == DB_LOCK_DEADLOCK) {
86 if ((ret = txn_abort(tid)) != 0) {
91 #endif /* CNID_DB_CDB */
95 /* did/name database */
96 altkey.data = (char *) data->data + CNID_DEVINO_LEN;
97 altkey.size = data->size - CNID_DEVINO_LEN;
98 if ((rc = db->db_didname->put(db->db_didname, tid, &altkey, &altdata, 0))) {
100 if (rc == DB_LOCK_DEADLOCK) {
101 if ((ret = txn_abort(tid)) != 0) {
106 #endif /* CNID_DB_CDB */
111 if ((rc = txn_commit(tid, 0)) != 0) {
112 LOG(log_error, logtype_default, "add_cnid: Failed to commit transaction: %s", db_strerror(rc));
115 #endif /* CNID_DB_CDB */
120 if ((ret = txn_abort(tid)) != 0) {
126 cnid_t cnid_add(void *CNID, const struct stat *st,
127 const cnid_t did, const char *name, const int len,
131 DBT key, data, rootinfo_key, rootinfo_data;
134 #endif /* CNID_DB_CDB */
138 if (!(db = CNID) || !st || !name) {
139 errno = CNID_ERR_PARAM;
144 id = cnid_lookup(db, st, did, name, len);
145 /* ... Return id if it is valid, or if Rootinfo is read-only. */
146 if (id || (db->flags & CNIDFLAG_DB_RO)) {
148 LOG(log_info, logtype_default, "cnid_add: Looked up did %u, name %s as %u", ntohl(did), name, ntohl(id));
153 /* Initialize our DBT data structures. */
154 memset(&key, 0, sizeof(key));
155 memset(&data, 0, sizeof(data));
157 /* Just tickle hint, and the key will change (gotta love pointers). */
159 key.size = sizeof(hint);
161 if ((data.data = make_cnid_data(st, did, name, len)) == NULL) {
162 LOG(log_error, logtype_default, "cnid_add: Path name is too long");
163 errno = CNID_ERR_PATH;
167 data.size = CNID_HEADER_LEN + len + 1;
169 /* Start off with the hint. It should be in network byte order.
170 * We need to make sure that somebody doesn't add in restricted
171 * cnid's to the database. */
172 if (ntohl(hint) >= CNID_START) {
173 /* If the key doesn't exist, add it in. Don't fiddle with nextID. */
174 rc = add_cnid(db, &key, &data);
176 case DB_KEYEXIST: /* Need to use RootInfo after all. */
179 LOG(log_error, logtype_default, "cnid_add: Unable to add CNID %u: %s", ntohl(hint), db_strerror(rc));
184 LOG(log_info, logtype_default, "cnid_add: Used hint for did %u, name %s as %u", ntohl(did), name, ntohl(hint));
190 memset(&rootinfo_key, 0, sizeof(rootinfo_key));
191 memset(&rootinfo_data, 0, sizeof(rootinfo_data));
192 rootinfo_key.data = ROOTINFO_KEY;
193 rootinfo_key.size = ROOTINFO_KEYLEN;
197 if ((rc = txn_begin(db->dbenv, NULL, &tid, 0)) != 0) {
198 LOG(log_error, logtype_default, "cnid_add: Failed to begin transaction: %s", db_strerror(rc));
202 #endif /* CNID_DB_CDB */
206 switch (rc = db->db_didname->get(db->db_didname, NULL, &rootinfo_key,
207 &rootinfo_data, 0)) {
208 #else /* CNID_DB_CDB */
209 switch (rc = db->db_didname->get(db->db_didname, tid, &rootinfo_key,
210 &rootinfo_data, DB_RMW)) {
211 case DB_LOCK_DEADLOCK:
212 if ((rc = txn_abort(tid)) != 0) {
213 LOG(log_error, logtype_default, "cnid_add: txn_abort: %s", db_strerror(rc));
218 #endif /* CNID_DB_CDB */
220 memcpy(&hint, rootinfo_data.data, sizeof(hint));
222 /* If we've hit the max CNID allowed, we return a fatal error. CNID
223 * needs to be recycled before proceding. */
224 if (++id == CNID_INVALID) {
227 #endif /* CNID_DB_CDB */
228 LOG(log_error, logtype_default, "cnid_add: FATAL: Cannot add CNID for %s. CNID database has reached its limit.", name);
229 errno = CNID_ERR_MAX;
234 LOG(log_info, logtype_default, "cnid_add: Found rootinfo for did %u, name %s as %u", ntohl(did), name, ntohl(hint));
238 hint = htonl(CNID_START);
240 LOG(log_info, logtype_default, "cnid_add: Using CNID_START for did %u, name %s", ntohl(did), name);
244 LOG(log_error, logtype_default, "cnid_add: Unable to lookup rootinfo: %s", db_strerror(rc));
248 rootinfo_data.data = &hint;
249 rootinfo_data.size = sizeof(hint);
251 switch (rc = db->db_didname->put(db->db_didname, tid, &rootinfo_key, &rootinfo_data, 0)) {
253 case DB_LOCK_DEADLOCK:
254 if ((rc = txn_abort(tid)) != 0) {
255 LOG(log_error, logtype_default, "cnid_add: txn_abort: %s", db_strerror(rc));
260 #endif /* CNID_DB_CDB */
263 /* The transaction finished, commit it. */
264 if ((rc = txn_commit(tid, 0)) != 0) {
265 LOG(log_error, logtype_default, "cnid_add: Unable to commit transaction: %s", db_strerror(rc));
269 #endif /* CNID_DB_CDB */
272 LOG(log_error, logtype_default, "cnid_add: Unable to update rootinfo: %s", db_strerror(rc));
276 /* Now we need to add the CNID data to the databases. */
277 rc = add_cnid(db, &key, &data);
279 LOG(log_error, logtype_default, "cnid_add: Failed to add CNID for %s to database using hint %u: %s", name, ntohl(hint), db_strerror(rc));
285 LOG(log_info, logtype_default, "cnid_add: Returned CNID for did %u, name %s as %u", ntohl(did), name, ntohl(hint));
293 #endif /* CNID_DB_CDB */