2 * $Id: cnid_dbd.c,v 1.16.2.1 2010-02-04 14:34:31 franklahm Exp $
4 * Copyright (C) Joerg Lenneis 2003
5 * All Rights Reserved. See COPYING.
10 #endif /* HAVE_CONFIG_H */
12 #ifdef CNID_BACKEND_DBD
15 #ifdef HAVE_SYS_STAT_H
17 #endif /* HAVE_SYS_STAT_H */
20 #endif /* HAVE_SYS_UIO_H */
26 #include <sys/socket.h>
27 #include <sys/param.h>
29 #include <netinet/in.h>
31 #include <netinet/tcp.h>
32 #include <netinet/in.h>
33 #include <arpa/inet.h>
38 #include <netatalk/endian.h>
39 #include <atalk/logger.h>
40 #include <atalk/adouble.h>
41 #include <atalk/cnid.h>
43 #include <atalk/cnid_dbd_private.h>
46 #define SOL_TCP IPPROTO_TCP
47 #endif /* ! SOL_TCP */
49 static void RQST_RESET(struct cnid_dbd_rqst *r)
51 memset(r, 0, sizeof(struct cnid_dbd_rqst ));
55 extern char *Cnid_srv;
56 extern char *Cnid_port;
60 /* *MUST* be < afp tickle or it's never triggered (got EINTR first) */
63 static void delay(int sec)
69 select(0, NULL, NULL, NULL, &tv);
72 static int tsock_getfd(const char *host, const char *port)
78 struct addrinfo hints, *servinfo, *p;
80 /* Prepare hint for getaddrinfo */
81 memset(&hints, 0, sizeof hints);
82 hints.ai_family = AF_UNSPEC;
83 hints.ai_socktype = SOCK_STREAM;
84 hints.ai_flags = AI_NUMERICSERV;
86 if ((err = getaddrinfo(host, port, &hints, &servinfo)) != 0) {
87 LOG(log_error, logtype_default, "tsock_getfd: getaddrinfo: %s:%s : %s\n", host, port, gai_strerror(err));
91 /* loop through all the results and bind to the first we can */
92 for (p = servinfo; p != NULL; p = p->ai_next) {
93 if ((sock = socket(p->ai_family, p->ai_socktype, p->ai_protocol)) == -1) {
94 LOG(log_info, logtype_default, "tsock_getfd: socket %s:: %s", host, strerror(errno));
99 if (setsockopt(sock, SOL_TCP, TCP_NODELAY, &attr, sizeof(attr)) == -1) {
100 LOG(log_error, logtype_cnid, "getfd: set TCP_NODELAY %s: %s", host, strerror(errno));
105 tv.tv_sec = SOCK_DELAY;
107 if (setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)) < 0) {
108 LOG(log_error, logtype_cnid, "getfd: set SO_RCVTIMEO %s: %s", host, strerror(errno));
113 tv.tv_sec = SOCK_DELAY;
115 if (setsockopt(sock, SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv)) < 0) {
116 LOG(log_error, logtype_cnid, "getfd: set SO_SNDTIMEO %s: %s", host, strerror(errno));
121 if (connect(sock, p->ai_addr, p->ai_addrlen) == -1) {
125 LOG(log_error, logtype_cnid, "getfd: connect %s: %s", host, strerror(err));
129 /* We've got a socket */
133 freeaddrinfo(servinfo);
136 LOG(log_error, logtype_cnid, "tsock_getfd: no suitable network config from %s:%s", host, port);
143 /* --------------------- */
144 static int write_vec(int fd, struct iovec *iov, size_t towrite)
149 len1 = iov[1].iov_len;
150 while (towrite > 0) {
151 if (((len = writev(fd, iov, 2)) == -1 && errno == EINTR) || !len)
154 if ((size_t)len == towrite) /* wrote everything out */
156 else if (len < 0) { /* error */
161 if (towrite > len1) { /* skip part of header */
162 iov[0].iov_base = (char *) iov[0].iov_base + len;
163 iov[0].iov_len -= len;
164 } else { /* skip to data */
165 if (iov[0].iov_len) {
166 len -= iov[0].iov_len;
169 iov[1].iov_base = (char *) iov[1].iov_base + len;
170 iov[1].iov_len -= len;
174 LOG(log_maxdebug, logtype_cnid, "write_vec: wrote %d bytes", towrite);
179 /* --------------------- */
180 static int init_tsock(CNID_private *db)
186 if ((fd = tsock_getfd(Cnid_srv, Cnid_port)) < 0)
189 len = strlen(db->db_dir);
191 iov[0].iov_base = &len;
192 iov[0].iov_len = sizeof(int);
194 iov[1].iov_base = db->db_dir;
195 iov[1].iov_len = len;
197 if (write_vec(fd, iov, len + sizeof(int)) < 0) {
198 LOG(log_error, logtype_cnid, "init_tsock: Error/short write: %s", strerror(errno));
203 LOG(log_maxdebug, logtype_cnid, "init_tsock: BEGIN. Opening volume '%s', CNID Server: %s/%s",
204 db->db_dir, Cnid_srv, Cnid_port);
209 /* --------------------- */
210 static int send_packet(CNID_private *db, struct cnid_dbd_rqst *rqst)
215 if (!rqst->namelen) {
216 if (write(db->fd, rqst, sizeof(struct cnid_dbd_rqst)) != sizeof(struct cnid_dbd_rqst)) {
217 LOG(log_warning, logtype_cnid, "send_packet: Error/short write rqst (db_dir %s): %s",
218 db->db_dir, strerror(errno));
221 LOG(log_maxdebug, logtype_cnid, "send_packet: OK");
225 iov[0].iov_base = rqst;
226 iov[0].iov_len = sizeof(struct cnid_dbd_rqst);
228 iov[1].iov_base = rqst->name;
229 iov[1].iov_len = rqst->namelen;
231 towrite = sizeof(struct cnid_dbd_rqst) +rqst->namelen;
233 if (write_vec(db->fd, iov, towrite) < 0) {
234 LOG(log_warning, logtype_cnid, "send_packet: Error writev rqst (db_dir %s): %s",
235 db->db_dir, strerror(errno));
239 LOG(log_maxdebug, logtype_cnid, "send_packet: {done}");
243 /* ------------------- */
244 static void dbd_initstamp(struct cnid_dbd_rqst *rqst)
247 rqst->op = CNID_DBD_OP_GETSTAMP;
250 /* ------------------- */
251 static int dbd_reply_stamp(struct cnid_dbd_rply *rply)
253 switch (rply->result) {
254 case CNID_DBD_RES_OK:
256 case CNID_DBD_RES_NOTFOUND:
258 case CNID_DBD_RES_ERR_DB:
266 /* ------------------- */
267 static ssize_t dbd_read(int socket, void *data, const size_t length)
273 while (stored < length) {
274 len = read(socket, (u_int8_t *) data + stored, length - stored);
288 /* ---------------------
289 * send a request and get reply
290 * assume send is non blocking
291 * if no answer after sometime (at least MAX_DELAY secondes) return an error
293 static int dbd_rpc(CNID_private *db, struct cnid_dbd_rqst *rqst, struct cnid_dbd_rply *rply)
299 if (send_packet(db, rqst) < 0) {
303 nametmp = rply->name;
305 ret = dbd_read(db->fd, rply, sizeof(struct cnid_dbd_rply));
307 if (ret != sizeof(struct cnid_dbd_rply)) {
308 LOG(log_error, logtype_cnid, "dbd_rpc: Error reading header from fd (db_dir %s): %s",
309 db->db_dir, ret == -1?strerror(errno):"closed");
310 rply->name = nametmp;
313 rply->name = nametmp;
314 if (rply->namelen && rply->namelen > len) {
315 LOG(log_error, logtype_cnid,
316 "dbd_rpc: Error reading name (db_dir %s): %s name too long: %d. only wanted %d, garbage?",
317 db->db_dir, rply->name, rply->namelen, len);
320 if (rply->namelen && (ret = dbd_read(db->fd, rply->name, rply->namelen)) != (ssize_t)rply->namelen) {
321 LOG(log_error, logtype_cnid, "dbd_rpc: Error reading name from fd (db_dir %s): %s",
322 db->db_dir, ret == -1?strerror(errno):"closed");
326 LOG(log_maxdebug, logtype_cnid, "dbd_rpc: {done}");
331 /* -------------------- */
332 static int transmit(CNID_private *db, struct cnid_dbd_rqst *rqst, struct cnid_dbd_rply *rply)
335 int clean = 1; /* no errors so far - to prevent sleep on first try */
338 /* volume and db don't have the same timestamp
344 struct cnid_dbd_rqst rqst_stamp;
345 struct cnid_dbd_rply rply_stamp;
346 char stamp[ADEDLEN_PRIVSYN];
348 LOG(log_maxdebug, logtype_cnid, "transmit: connecting to cnid_dbd ...");
349 if ((db->fd = init_tsock(db)) < 0) {
352 dbd_initstamp(&rqst_stamp);
353 memset(stamp, 0, ADEDLEN_PRIVSYN);
354 rply_stamp.name = stamp;
355 rply_stamp.namelen = ADEDLEN_PRIVSYN;
357 if (dbd_rpc(db, &rqst_stamp, &rply_stamp) < 0)
359 if (dbd_reply_stamp(&rply_stamp ) < 0)
363 LOG(log_debug7, logtype_cnid, "transmit: reconnected to cnid_dbd, comparing database stamps...");
364 if (memcmp(stamp, db->stamp, ADEDLEN_PRIVSYN)) {
365 LOG(log_error, logtype_cnid, "transmit: ... not the same db!");
369 LOG(log_debug7, logtype_cnid, "transmit: ... OK.");
373 if (db->client_stamp)
374 memcpy(db->client_stamp, stamp, ADEDLEN_PRIVSYN);
375 memcpy(db->stamp, stamp, ADEDLEN_PRIVSYN);
377 LOG(log_debug, logtype_cnid, "transmit: attached to '%s', stamp: '%08lx'.",
378 db->db_dir, *(uint64_t *)stamp);
380 if (!dbd_rpc(db, rqst, rply)) {
381 LOG(log_maxdebug, logtype_cnid, "transmit: {done}");
387 db->fd = -1; /* FD not valid... will need to reconnect */
390 if (!clean) { /* don't sleep if just got disconnected by cnid server */
392 if (t - orig > MAX_DELAY) {
393 LOG(log_error, logtype_cnid, "transmit: Request to dbd daemon (db_dir %s) timed out.", db->db_dir);
396 /* sleep a little before retry */
399 clean = 0; /* false... next time sleep */
406 /* ---------------------- */
407 static struct _cnid_db *cnid_dbd_new(const char *volpath)
409 struct _cnid_db *cdb;
411 if ((cdb = (struct _cnid_db *)calloc(1, sizeof(struct _cnid_db))) == NULL)
414 if ((cdb->volpath = strdup(volpath)) == NULL) {
419 cdb->flags = CNID_FLAG_PERSISTENT | CNID_FLAG_LAZY_INIT;
421 cdb->cnid_add = cnid_dbd_add;
422 cdb->cnid_delete = cnid_dbd_delete;
423 cdb->cnid_get = cnid_dbd_get;
424 cdb->cnid_lookup = cnid_dbd_lookup;
425 cdb->cnid_nextid = NULL;
426 cdb->cnid_resolve = cnid_dbd_resolve;
427 cdb->cnid_getstamp = cnid_dbd_getstamp;
428 cdb->cnid_update = cnid_dbd_update;
429 cdb->cnid_rebuild_add = cnid_dbd_rebuild_add;
430 cdb->cnid_close = cnid_dbd_close;
435 /* ---------------------- */
436 struct _cnid_db *cnid_dbd_open(const char *dir, mode_t mask _U_, u_int32_t flags _U_)
438 CNID_private *db = NULL;
439 struct _cnid_db *cdb = NULL;
445 if ((cdb = cnid_dbd_new(dir)) == NULL) {
446 LOG(log_error, logtype_cnid, "cnid_open: Unable to allocate memory for database");
450 if ((db = (CNID_private *)calloc(1, sizeof(CNID_private))) == NULL) {
451 LOG(log_error, logtype_cnid, "cnid_open: Unable to allocate memory for database");
452 goto cnid_dbd_open_fail;
457 /* We keep a copy of the directory in the db structure so that we can
458 transparently reconnect later. */
459 strcpy(db->db_dir, dir);
460 db->magic = CNID_DB_MAGIC;
463 LOG(log_debug, logtype_cnid, "cnid_dbd_open: Finished initializing cnid dbd module for volume '%s'", db->db_dir);
469 if (cdb->volpath != NULL) {
480 /* ---------------------- */
481 void cnid_dbd_close(struct _cnid_db *cdb)
486 LOG(log_error, logtype_cnid, "cnid_close called with NULL argument !");
490 if ((db = cdb->_private) != NULL) {
491 LOG(log_debug, logtype_cnid, "closing database connection for volume '%s'", db->db_dir);
504 /* ---------------------- */
505 cnid_t cnid_dbd_add(struct _cnid_db *cdb, const struct stat *st,
506 const cnid_t did, char *name, const size_t len,
510 struct cnid_dbd_rqst rqst;
511 struct cnid_dbd_rply rply;
514 if (!cdb || !(db = cdb->_private) || !st || !name) {
515 LOG(log_error, logtype_cnid, "cnid_add: Parameter error");
516 errno = CNID_ERR_PARAM;
520 if (len > MAXPATHLEN) {
521 LOG(log_error, logtype_cnid, "cnid_add: Path name is too long");
522 errno = CNID_ERR_PATH;
527 rqst.op = CNID_DBD_OP_ADD;
529 if (!(cdb->flags & CNID_FLAG_NODEV)) {
530 rqst.dev = st->st_dev;
533 rqst.ino = st->st_ino;
534 rqst.type = S_ISDIR(st->st_mode)?1:0;
540 LOG(log_debug, logtype_cnid, "cnid_dbd_add: CNID: %u, name: '%s', inode: 0x%llx, type: %d (0=file, 1=dir)",
541 ntohl(did), name, (long long)st->st_ino, rqst.type);
544 if (transmit(db, &rqst, &rply) < 0) {
549 switch(rply.result) {
550 case CNID_DBD_RES_OK:
552 LOG(log_debug, logtype_cnid, "cnid_dbd_add: got CNID: %u", ntohl(id));
554 case CNID_DBD_RES_ERR_MAX:
555 errno = CNID_ERR_MAX;
558 case CNID_DBD_RES_ERR_DB:
559 case CNID_DBD_RES_ERR_DUPLCNID:
570 /* ---------------------- */
571 cnid_t cnid_dbd_get(struct _cnid_db *cdb, const cnid_t did, char *name, const size_t len)
574 struct cnid_dbd_rqst rqst;
575 struct cnid_dbd_rply rply;
578 if (!cdb || !(db = cdb->_private) || !name) {
579 LOG(log_error, logtype_cnid, "cnid_dbd_get: Parameter error");
580 errno = CNID_ERR_PARAM;
584 if (len > MAXPATHLEN) {
585 LOG(log_error, logtype_cnid, "cnid_dbd_get: Path name is too long");
586 errno = CNID_ERR_PATH;
590 LOG(log_debug, logtype_cnid, "cnid_dbd_get: DID: %u, name: '%s'", ntohl(did), name);
593 rqst.op = CNID_DBD_OP_GET;
599 if (transmit(db, &rqst, &rply) < 0) {
604 switch(rply.result) {
605 case CNID_DBD_RES_OK:
607 LOG(log_debug, logtype_cnid, "cnid_dbd_get: got CNID: %u", ntohl(id));
609 case CNID_DBD_RES_NOTFOUND:
612 case CNID_DBD_RES_ERR_DB:
623 /* ---------------------- */
624 char *cnid_dbd_resolve(struct _cnid_db *cdb, cnid_t *id, void *buffer, size_t len)
627 struct cnid_dbd_rqst rqst;
628 struct cnid_dbd_rply rply;
631 if (!cdb || !(db = cdb->_private) || !id || !(*id)) {
632 LOG(log_error, logtype_cnid, "cnid_resolve: Parameter error");
633 errno = CNID_ERR_PARAM;
637 LOG(log_debug, logtype_cnid, "cnid_dbd_resolve: resolving CNID: %u", ntohl(*id));
639 /* TODO: We should maybe also check len. At the moment we rely on the caller
640 to provide a buffer that is large enough for MAXPATHLEN plus
641 CNID_HEADER_LEN plus 1 byte, which is large enough for the maximum that
642 can come from the database. */
645 rqst.op = CNID_DBD_OP_RESOLVE;
648 /* This mimicks the behaviour of the "regular" cnid_resolve. So far,
649 nobody uses the content of buffer. It only provides space for the
650 name in the caller. */
651 rply.name = (char *)buffer + CNID_HEADER_LEN;
652 rply.namelen = len - CNID_HEADER_LEN;
654 if (transmit(db, &rqst, &rply) < 0) {
660 switch (rply.result) {
661 case CNID_DBD_RES_OK:
664 LOG(log_debug, logtype_cnid, "cnid_dbd_resolve: resolved did: %u, name: '%s'", ntohl(*id), name);
666 case CNID_DBD_RES_NOTFOUND:
670 case CNID_DBD_RES_ERR_DB:
682 /* ---------------------- */
683 int cnid_dbd_getstamp(struct _cnid_db *cdb, void *buffer, const size_t len)
687 if (!cdb || !(db = cdb->_private) || len != ADEDLEN_PRIVSYN) {
688 LOG(log_error, logtype_cnid, "cnid_getstamp: Parameter error");
689 errno = CNID_ERR_PARAM;
692 db->client_stamp = buffer;
693 db->stamp_size = len;
694 memset(buffer,0, len);
698 /* ---------------------- */
699 cnid_t cnid_dbd_lookup(struct _cnid_db *cdb, const struct stat *st, const cnid_t did,
700 char *name, const size_t len)
703 struct cnid_dbd_rqst rqst;
704 struct cnid_dbd_rply rply;
707 if (!cdb || !(db = cdb->_private) || !st || !name) {
708 LOG(log_error, logtype_cnid, "cnid_lookup: Parameter error");
709 errno = CNID_ERR_PARAM;
713 if (len > MAXPATHLEN) {
714 LOG(log_error, logtype_cnid, "cnid_lookup: Path name is too long");
715 errno = CNID_ERR_PATH;
720 rqst.op = CNID_DBD_OP_LOOKUP;
722 if (!(cdb->flags & CNID_FLAG_NODEV)) {
723 rqst.dev = st->st_dev;
726 rqst.ino = st->st_ino;
727 rqst.type = S_ISDIR(st->st_mode)?1:0;
732 LOG(log_debug, logtype_cnid, "cnid_dbd_lookup: CNID: %u, name: '%s', inode: 0x%llx, type: %d (0=file, 1=dir)",
733 ntohl(did), name, (long long)st->st_ino, rqst.type);
736 if (transmit(db, &rqst, &rply) < 0) {
741 switch (rply.result) {
742 case CNID_DBD_RES_OK:
744 LOG(log_debug, logtype_cnid, "cnid_dbd_lookup: got CNID: %u", ntohl(id));
746 case CNID_DBD_RES_NOTFOUND:
749 case CNID_DBD_RES_ERR_DB:
760 /* ---------------------- */
761 int cnid_dbd_update(struct _cnid_db *cdb, const cnid_t id, const struct stat *st,
762 const cnid_t did, char *name, const size_t len)
765 struct cnid_dbd_rqst rqst;
766 struct cnid_dbd_rply rply;
768 if (!cdb || !(db = cdb->_private) || !id || !st || !name) {
769 LOG(log_error, logtype_cnid, "cnid_update: Parameter error");
770 errno = CNID_ERR_PARAM;
774 if (len > MAXPATHLEN) {
775 LOG(log_error, logtype_cnid, "cnid_update: Path name is too long");
776 errno = CNID_ERR_PATH;
781 rqst.op = CNID_DBD_OP_UPDATE;
783 if (!(cdb->flags & CNID_FLAG_NODEV)) {
784 rqst.dev = st->st_dev;
786 rqst.ino = st->st_ino;
787 rqst.type = S_ISDIR(st->st_mode)?1:0;
792 LOG(log_debug, logtype_cnid, "cnid_dbd_update: CNID: %u, name: '%s', inode: 0x%llx, type: %d (0=file, 1=dir)",
793 ntohl(id), name, (long long)st->st_ino, rqst.type);
796 if (transmit(db, &rqst, &rply) < 0) {
801 switch (rply.result) {
802 case CNID_DBD_RES_OK:
803 LOG(log_debug, logtype_cnid, "cnid_dbd_update: updated");
804 case CNID_DBD_RES_NOTFOUND:
806 case CNID_DBD_RES_ERR_DB:
814 /* ---------------------- */
815 cnid_t cnid_dbd_rebuild_add(struct _cnid_db *cdb, const struct stat *st,
816 const cnid_t did, char *name, const size_t len,
820 struct cnid_dbd_rqst rqst;
821 struct cnid_dbd_rply rply;
824 if (!cdb || !(db = cdb->_private) || !st || !name || hint == CNID_INVALID) {
825 LOG(log_error, logtype_cnid, "cnid_rebuild_add: Parameter error");
826 errno = CNID_ERR_PARAM;
830 if (len > MAXPATHLEN) {
831 LOG(log_error, logtype_cnid, "cnid_rebuild_add: Path name is too long");
832 errno = CNID_ERR_PATH;
837 rqst.op = CNID_DBD_OP_REBUILD_ADD;
839 if (!(cdb->flags & CNID_FLAG_NODEV)) {
840 rqst.dev = st->st_dev;
843 rqst.ino = st->st_ino;
844 rqst.type = S_ISDIR(st->st_mode)?1:0;
850 LOG(log_debug, logtype_cnid, "cnid_dbd_rebuild_add: CNID: %u, name: '%s', inode: 0x%llx, type: %d (0=file, 1=dir), hint: %u",
851 ntohl(did), name, (long long)st->st_ino, rqst.type, hint);
853 if (transmit(db, &rqst, &rply) < 0) {
858 switch(rply.result) {
859 case CNID_DBD_RES_OK:
861 LOG(log_debug, logtype_cnid, "cnid_dbd_rebuild_add: got CNID: %u", ntohl(id));
863 case CNID_DBD_RES_ERR_MAX:
864 errno = CNID_ERR_MAX;
867 case CNID_DBD_RES_ERR_DB:
868 case CNID_DBD_RES_ERR_DUPLCNID:
878 /* ---------------------- */
879 int cnid_dbd_delete(struct _cnid_db *cdb, const cnid_t id)
882 struct cnid_dbd_rqst rqst;
883 struct cnid_dbd_rply rply;
885 if (!cdb || !(db = cdb->_private) || !id) {
886 LOG(log_error, logtype_cnid, "cnid_delete: Parameter error");
887 errno = CNID_ERR_PARAM;
891 LOG(log_debug, logtype_cnid, "cnid_dbd_delete: delete CNID: %u", ntohl(id));
894 rqst.op = CNID_DBD_OP_DELETE;
898 if (transmit(db, &rqst, &rply) < 0) {
903 switch (rply.result) {
904 case CNID_DBD_RES_OK:
905 LOG(log_debug, logtype_cnid, "cnid_dbd_delete: deleted CNID: %u", ntohl(id));
906 case CNID_DBD_RES_NOTFOUND:
908 case CNID_DBD_RES_ERR_DB:
917 struct _cnid_module cnid_dbd_module = {
924 #endif /* CNID_DBD */