2 * $Id: dbd_lookup.c,v 1.1.4.3 2003-10-30 10:03:19 bfernhomberg Exp $
4 * Copyright (C) Joerg Lenneis 2003
5 * All Rights Reserved. See COPYRIGHT.
10 #endif /* HAVE_CONFIG_H */
15 #include <sys/param.h>
17 #include <netatalk/endian.h>
18 #include <atalk/logger.h>
19 #include <atalk/cnid_dbd_private.h>
26 * This returns the CNID corresponding to a particular file. It will also fix
27 * up the database if there's a problem.
30 int dbd_lookup(struct cnid_dbd_rqst *rqst, struct cnid_dbd_rply *rply)
33 DBT key, devdata, diddata;
36 int devino = 1, didname = 1;
38 cnid_t id_devino, id_didname;
39 u_int32_t type_devino = (unsigned)-1;
40 u_int32_t type_didname = (unsigned)-1;
44 memset(&key, 0, sizeof(key));
45 memset(&diddata, 0, sizeof(diddata));
46 memset(&devdata, 0, sizeof(devdata));
51 buf = pack_cnid_data(rqst);
52 memcpy(&dev, buf + CNID_DEV_OFS, sizeof(dev));
53 memcpy(&ino, buf + CNID_INO_OFS, sizeof(ino));
55 /* Look for a CNID. We have two options: dev/ino or did/name. If we
56 only get a match in one of them, that means a file has moved. */
57 key.data = buf +CNID_DEVINO_OFS;
58 key.size = CNID_DEVINO_LEN;
60 if ((rc = dbif_get(DBIF_IDX_DEVINO, &key, &devdata, 0)) < 0) {
61 LOG(log_error, logtype_cnid, "dbd_lookup: Unable to get CNID %u, name %s",
62 ntohl(rqst->did), rqst->name);
63 rply->result = CNID_DBD_RES_ERR_DB;
70 memcpy(&id_devino, devdata.data, sizeof(rply->cnid));
71 memcpy(&type_devino, devdata.data +CNID_TYPE_OFS, sizeof(type_devino));
72 type_devino = ntohl(type_devino);
75 buf = pack_cnid_data(rqst);
76 key.data = buf +CNID_DID_OFS;
77 key.size = CNID_DID_LEN + rqst->namelen + 1;
79 if ((rc = dbif_get(DBIF_IDX_DIDNAME, &key, &diddata, 0)) < 0) {
80 LOG(log_error, logtype_cnid, "dbd_lookup: Unable to get CNID %u, name %s",
81 ntohl(rqst->did), rqst->name);
82 rply->result = CNID_DBD_RES_ERR_DB;
89 memcpy(&id_didname, diddata.data, sizeof(rply->cnid));
90 memcpy(&type_didname, diddata.data +CNID_TYPE_OFS, sizeof(type_didname));
91 type_didname = ntohl(type_didname);
94 if (!devino && !didname) {
96 rply->result = CNID_DBD_RES_NOTFOUND;
100 if (devino && didname && id_devino == id_didname && type_devino == rqst->type) {
102 rply->cnid = id_didname;
103 rply->result = CNID_DBD_RES_OK;
108 rqst->cnid = id_didname;
109 /* we have a did:name
110 * if it's the same dev or not the same type
113 if (!memcmp(&dev, (char *)diddata.data + CNID_DEV_OFS, sizeof(dev)) ||
114 type_didname != rqst->type) {
115 if (dbd_delete(rqst, rply) < 0) {
125 rqst->cnid = id_devino;
126 if (type_devino != rqst->type) {
127 /* same dev:inode but not same type one is a folder the other
128 * is a file,it's an inode reused, delete the record
130 if (dbd_delete(rqst, rply) < 0) {
139 rply->result = CNID_DBD_RES_NOTFOUND;
142 /* Fix up the database. assume it was a file move and rename */
143 rc = dbd_update(rqst, rply);
145 rply->cnid = rqst->cnid;
148 LOG(log_info, logtype_cnid, "cnid_lookup: Looked up did %u, name %s, as %u (needed update)",
149 ntohl(rqst->did), rqst->name, ntohl(rply->cnid));