2 * $Id: cnid_lookup.c,v 1.14.2.1 2003-02-08 03:16:53 jmarcus Exp $
7 #endif /* HAVE_CONFIG_H */
12 #include <sys/param.h>
14 #include <atalk/logger.h>
18 #include <netatalk/endian.h>
19 #include <atalk/adouble.h>
20 #include <atalk/cnid.h>
22 #include "cnid_private.h"
24 #define LOGFILEMAX 100 /* kbytes */
25 #define CHECKTIMEMAX 30 /* minutes */
27 /* This returns the CNID corresponding to a particular file. It will
28 * also fix up the various databases if there's a problem. */
29 cnid_t cnid_lookup(void *CNID, const struct stat *st, const cnid_t did,
30 const char *name, const int len)
34 DBT key, devdata, diddata;
35 int devino = 1, didname = 1;
39 if (!(db = CNID) || !st || !name) {
44 /* Do a little checkpointing if necessary. I stuck it here as cnid_lookup
45 * gets called when we do directory lookups. Only do this if we're using
46 * a read-write database. */
47 if ((db->flags & CNIDFLAG_DB_RO) == 0) {
49 LOG(log_info, logtype_default, "cnid_lookup: Running database checkpoint");
51 #if DB_VERSION_MAJOR > 4 || (DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR >= 1)
52 db->dbenv->txn_checkpoint(db->dbenv, LOGFILEMAX, CHECKTIMEMAX, 0)
54 #if DB_VERSION_MAJOR >= 4
55 switch (rc = db->dbenv->txn_checkpoint(db->dbenv, LOGFILEMAX, CHECKTIMEMAX, 0)) {
57 switch (rc = txn_checkpoint(db->dbenv, LOGFILEMAX, CHECKTIMEMAX, 0)) {
58 #endif /* DB_VERSION_MAJOR >= 4 */
63 LOG(log_error, logtype_default, "cnid_lookup: txn_checkpoint: %s",
68 #endif /* DB_VERSION_MAJOR > 4 || (DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR >= 1) */
69 #endif /* CNID_DB_CDB */
71 if ((buf = make_cnid_data(st, did, name, len)) == NULL) {
72 LOG(log_error, logtype_default, "cnid_lookup: Pathname is too long");
76 memset(&key, 0, sizeof(key));
77 memset(&devdata, 0, sizeof(devdata));
78 memset(&diddata, 0, sizeof(diddata));
80 /* Look for a CNID. We have two options: dev/ino or did/name. If we
81 * only get a match in one of them, that means a file has moved. */
83 key.size = CNID_DEVINO_LEN;
84 while ((rc = db->db_devino->get(db->db_devino, NULL, &key, &devdata, 0))) {
86 if (rc == DB_LOCK_DEADLOCK) {
89 #endif /* CNID_DB_CDB */
91 if (rc == DB_NOTFOUND) {
96 LOG(log_error, logtype_default, "cnid_lookup: Unable to get CNID dev %u, ino %u: %s",
97 st->st_dev, st->st_ino, db_strerror(rc));
102 key.data = buf + CNID_DEVINO_LEN;
103 key.size = CNID_DID_LEN + len + 1;
104 while ((rc = db->db_didname->get(db->db_didname, NULL, &key, &diddata, 0))) {
106 if (rc == DB_LOCK_DEADLOCK) {
109 #endif /* CNID_DB_CDB */
111 if (rc == DB_NOTFOUND) {
116 LOG(log_error, logtype_default, "cnid_lookup: Unable to get CNID %u, name %s: %s",
117 ntohl(did), name, db_strerror(rc));
121 /* Set id. Honor did/name over dev/ino as dev/ino isn't necessarily
124 memcpy(&id, diddata.data, sizeof(id));
127 memcpy(&id, devdata.data, sizeof(id));
130 /* Either entries are in both databases or neither of them. */
131 if ((devino && didname) || !(devino || didname)) {
133 LOG(log_info, logtype_default, "cnid_lookup: Looked up did %u, name %s, as %u",
134 ntohl(did), name, ntohl(id));
139 /* Fix up the database. */
140 cnid_update(db, id, st, did, name, len);
142 LOG(log_info, logtype_default, "cnid_lookup: Looked up did %u, name %s, as %u (needed update)", ntohl(did), name, ntohl(id));