/*
- * $Id: dbd_add.c,v 1.7 2009-11-25 14:59:15 franklahm Exp $
- *
* Copyright (C) Joerg Lenneis 2003
+ * Copyright (C) Frank Lahm 2010
* All Rights Reserved. See COPYING.
*/
#endif /* HAVE_CONFIG_H */
#include <string.h>
-#ifdef HAVE_UNISTD_H
#include <unistd.h>
-#endif /* HAVE_UNISTD_H */
-#ifdef HAVE_FCNTL_H
#include <fcntl.h>
-#endif /* HAVE_FCNTL_H */
#include <errno.h>
-#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
-#endif /* HAVE_SYS_TIME_H */
#include <atalk/logger.h>
#include <atalk/cnid_dbd_private.h>
#include <atalk/cnid.h>
-#ifdef HAVE_DB4_DB_H
-#include <db4/db.h>
-#else
#include <db.h>
-#endif
#include "dbif.h"
#include "pack.h"
/* ---------------------- */
int get_cnid(DBD *dbd, struct cnid_dbd_rply *rply)
{
- DBT rootinfo_key, rootinfo_data;
+ static cnid_t id;
+ static char buf[ROOTINFO_DATALEN];
+ DBT rootinfo_key, rootinfo_data, key, data;
int rc;
- cnid_t hint, id;
-
+ cnid_t hint;
+
memset(&rootinfo_key, 0, sizeof(rootinfo_key));
memset(&rootinfo_data, 0, sizeof(rootinfo_data));
rootinfo_key.data = ROOTINFO_KEY;
rootinfo_key.size = ROOTINFO_KEYLEN;
- if ((rc = dbif_get(dbd, DBIF_CNID, &rootinfo_key, &rootinfo_data, 0)) <= 0) {
- rply->result = CNID_DBD_RES_ERR_DB;
- return -1;
- }
- memcpy(&hint, (char *)rootinfo_data.data +CNID_TYPE_OFS, sizeof(hint));
- id = ntohl(hint);
- /* If we've hit the max CNID allowed, we return an error. CNID
- * needs to be recycled before proceding. */
- if (++id == CNID_INVALID) {
- rply->result = CNID_DBD_RES_ERR_MAX;
- return -1;
- }
-
-#if 0
- memcpy(buf, ROOTINFO_DATA, ROOTINFO_DATALEN);
-#endif
- rootinfo_data.size = ROOTINFO_DATALEN;
- hint = htonl(id);
- memcpy((char *)rootinfo_data.data +CNID_TYPE_OFS, &hint, sizeof(hint));
+ memset(&key, 0, sizeof(key));
+ memset(&data, 0, sizeof(data));
- if (dbif_put(dbd, DBIF_CNID, &rootinfo_key, &rootinfo_data, 0) < 0) {
- rply->result = CNID_DBD_RES_ERR_DB;
- return -1;
+ if (id == 0) {
+ if ((rc = dbif_get(dbd, DBIF_CNID, &rootinfo_key, &rootinfo_data, 0)) != 1) {
+ rply->result = CNID_DBD_RES_ERR_DB;
+ return -1;
+ }
+ memcpy(buf, (char *)rootinfo_data.data, ROOTINFO_DATALEN);
+ memcpy(&hint, buf + CNID_TYPE_OFS, sizeof(hint));
+ id = ntohl(hint);
+ if (id < CNID_START - 1)
+ id = CNID_START - 1;
}
- rply->cnid = hint;
- return 0;
-}
-/* ---------------
-*/
-int dbd_stamp(DBD *dbd)
-{
- DBT rootinfo_key, rootinfo_data;
- cnid_t hint;
- char buf[ROOTINFO_DATALEN];
- char stamp[CNID_DEV_LEN];
+ cnid_t trycnid, tmp;
- memset(&rootinfo_key, 0, sizeof(rootinfo_key));
- memset(&rootinfo_data, 0, sizeof(rootinfo_data));
- rootinfo_key.data = ROOTINFO_KEY;
- rootinfo_key.size = ROOTINFO_KEYLEN;
+ while (true) {
+ if (rply->cnid != CNID_INVALID) {
+ trycnid = ntohl(rply->cnid);
+ rply->cnid = CNID_INVALID;
+ } else {
+ if (++id == CNID_INVALID)
+ id = CNID_START;
+ trycnid = id;
+ }
+ tmp = htonl(trycnid);
+ key.data = &tmp;
+ key.size = sizeof(cnid_t);
+ rc = dbif_get(dbd, DBIF_CNID, &key, &data, 0);
+ if (rc == 0) {
+ break;
+ } else if (rc == -1) {
+ rply->result = CNID_DBD_RES_ERR_DB;
+ return -1;
+ }
+ }
- switch (dbif_get(dbd, DBIF_CNID, &rootinfo_key, &rootinfo_data, 0)) {
- case 0:
- hint = htonl(CNID_START);
- memcpy(buf, ROOTINFO_DATA, ROOTINFO_DATALEN);
+ if (trycnid == id) {
rootinfo_data.data = buf;
rootinfo_data.size = ROOTINFO_DATALEN;
- if (dbif_stamp(dbd, stamp, CNID_DEV_LEN) < 0) {
- return -1;
- }
- memcpy((char *)rootinfo_data.data + CNID_TYPE_OFS, &hint, sizeof(hint));
- memcpy((char *)rootinfo_data.data + CNID_DEV_OFS, stamp, sizeof(stamp));
+ hint = htonl(id);
+ memcpy(buf + CNID_TYPE_OFS, &hint, sizeof(hint));
+
if (dbif_put(dbd, DBIF_CNID, &rootinfo_key, &rootinfo_data, 0) < 0) {
+ rply->result = CNID_DBD_RES_ERR_DB;
return -1;
}
- return 0;
-
- case 1: /* we already have one */
- return 0;
- default:
- return -1;
}
- return -1;
+
+ rply->cnid = htonl(trycnid);
+ return 0;
}
/* ------------------------ */
/* We need a nolookup version for `dbd` */
-int dbd_add(DBD *dbd, struct cnid_dbd_rqst *rqst, struct cnid_dbd_rply *rply, int nolookup)
+int dbd_add(DBD *dbd, struct cnid_dbd_rqst *rqst, struct cnid_dbd_rply *rply)
{
rply->namelen = 0;
+ LOG(log_debug, logtype_cnid, "dbd_add(did:%u, '%s', dev/ino:0x%llx/0x%llx) {start}",
+ ntohl(rqst->did), rqst->name, (unsigned long long)rqst->dev, (unsigned long long)rqst->ino);
+
/* See if we have an entry already and return it if yes */
- if (! nolookup) {
- if (dbd_lookup(dbd, rqst, rply, 0) < 0)
- return -1;
+ if (dbd_lookup(dbd, rqst, rply) < 0) {
+ LOG(log_debug, logtype_cnid, "dbd_add(did:%u, '%s', dev/ino:0x%llx/0x%llx): error in dbd_lookup",
+ ntohl(rqst->did), rqst->name, (unsigned long long)rqst->dev, (unsigned long long)rqst->ino);
+ return -1;
+ }
- if (rply->result == CNID_DBD_RES_OK) {
- /* Found it. rply->cnid is the correct CNID now. */
- LOG(log_debug, logtype_cnid, "dbd_add: dbd_lookup success --> CNID: %u", ntohl(rply->cnid));
- return 1;
- }
+ if (rply->result == CNID_DBD_RES_OK) {
+ /* Found it. rply->cnid is the correct CNID now. */
+ LOG(log_debug, logtype_cnid, "dbd_add: dbd_lookup success --> CNID: %u", ntohl(rply->cnid));
+ return 1;
}
+ LOG(log_debug, logtype_cnid, "dbd_add(did:%u, '%s', dev/ino:0x%llx/0x%llx): {adding to database ...}",
+ ntohl(rqst->did), rqst->name, (unsigned long long)rqst->dev, (unsigned long long)rqst->ino);
+
+ if (rqst->cnid) {
+ /* rqst->cnid is the cnid "hint"/backup from the adouble file */
+ rply->cnid = rqst->cnid;
+ }
if (get_cnid(dbd, rply) < 0) {
if (rply->result == CNID_DBD_RES_ERR_MAX) {
LOG(log_error, logtype_cnid, "dbd_add: FATAL: CNID database has reached its limit.");
return -1;
}
}
- LOG(log_debug, logtype_cnid, "dbd_add(DID: %u/\"%s\", dev/ino 0x%llx/0x%llx): Added with CNID: %u",
+ LOG(log_debug, logtype_cnid, "dbd_add(did:%u, '%s', dev/ino:0x%llx/0x%llx): Added with CNID: %u",
ntohl(rqst->did), rqst->name, (unsigned long long)rqst->dev, (unsigned long long)rqst->ino, ntohl(rply->cnid));
rply->result = CNID_DBD_RES_OK;
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