2 Unix SMB/CIFS implementation.
4 Copyright (C) Stefan Metzmacher 2009
6 ** NOTE! The following LGPL license applies to the tsocket
7 ** library. This does NOT imply that all of Samba is released
10 This library is free software; you can redistribute it and/or
11 modify it under the terms of the GNU Lesser General Public
12 License as published by the Free Software Foundation; either
13 version 3 of the License, or (at your option) any later version.
15 This library is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 Lesser General Public License for more details.
20 You should have received a copy of the GNU Lesser General Public
21 License along with this library; if not, see <http://www.gnu.org/licenses/>.
25 #include "system/filesys.h"
26 #include "system/network.h"
28 #include "tsocket_internal.h"
29 #include "lib/util/iov_buf.h"
30 #include "lib/util/blocking.h"
32 static int tsocket_bsd_error_from_errno(int ret,
50 if (sys_errno == EINTR) {
55 if (sys_errno == EINPROGRESS) {
60 if (sys_errno == EAGAIN) {
65 /* ENOMEM is retryable on Solaris/illumos, and possibly other systems. */
66 if (sys_errno == ENOMEM) {
72 if (sys_errno == EWOULDBLOCK) {
81 static int tsocket_bsd_common_prepare_fd(int fd, bool high_fd)
95 /* first make a fd >= 3 */
105 for (i=0; i<num_fds; i++) {
114 result = set_blocking(fd, false);
119 ok = smb_set_close_on_exec(fd);
135 static ssize_t tsocket_bsd_pending(int fd)
141 ret = ioctl(fd, FIONREAD, &value);
147 /* this should not be reached */
160 * if no data is available check if the socket is in error state. For
161 * dgram sockets it's the way to return ICMP error messages of
162 * connected sockets to the caller.
164 ret = getsockopt(fd, SOL_SOCKET, SO_ERROR, &error, &len);
175 static const struct tsocket_address_ops tsocket_address_bsd_ops;
177 struct tsocket_address_bsd {
178 socklen_t sa_socklen;
181 struct sockaddr_in in;
183 struct sockaddr_in6 in6;
185 struct sockaddr_un un;
186 struct sockaddr_storage ss;
190 int _tsocket_address_bsd_from_sockaddr(TALLOC_CTX *mem_ctx,
191 const struct sockaddr *sa,
193 struct tsocket_address **_addr,
194 const char *location)
196 struct tsocket_address *addr;
197 struct tsocket_address_bsd *bsda;
199 if (sa_socklen < sizeof(sa->sa_family)) {
204 switch (sa->sa_family) {
206 if (sa_socklen > sizeof(struct sockaddr_un)) {
207 sa_socklen = sizeof(struct sockaddr_un);
211 if (sa_socklen < sizeof(struct sockaddr_in)) {
215 sa_socklen = sizeof(struct sockaddr_in);
219 if (sa_socklen < sizeof(struct sockaddr_in6)) {
223 sa_socklen = sizeof(struct sockaddr_in6);
227 errno = EAFNOSUPPORT;
231 if (sa_socklen > sizeof(struct sockaddr_storage)) {
236 addr = tsocket_address_create(mem_ctx,
237 &tsocket_address_bsd_ops,
239 struct tsocket_address_bsd,
248 memcpy(&bsda->u.ss, sa, sa_socklen);
250 bsda->sa_socklen = sa_socklen;
251 #ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
252 bsda->u.sa.sa_len = bsda->sa_socklen;
259 ssize_t tsocket_address_bsd_sockaddr(const struct tsocket_address *addr,
263 struct tsocket_address_bsd *bsda = talloc_get_type(addr->private_data,
264 struct tsocket_address_bsd);
271 if (sa_socklen < bsda->sa_socklen) {
276 if (sa_socklen > bsda->sa_socklen) {
277 memset(sa, 0, sa_socklen);
278 sa_socklen = bsda->sa_socklen;
281 memcpy(sa, &bsda->u.ss, sa_socklen);
282 #ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
283 sa->sa_len = sa_socklen;
288 bool tsocket_address_is_inet(const struct tsocket_address *addr, const char *fam)
290 struct tsocket_address_bsd *bsda = talloc_get_type(addr->private_data,
291 struct tsocket_address_bsd);
297 switch (bsda->u.sa.sa_family) {
299 if (strcasecmp(fam, "ip") == 0) {
303 if (strcasecmp(fam, "ipv4") == 0) {
310 if (strcasecmp(fam, "ip") == 0) {
314 if (strcasecmp(fam, "ipv6") == 0) {
325 int _tsocket_address_inet_from_strings(TALLOC_CTX *mem_ctx,
329 struct tsocket_address **_addr,
330 const char *location)
332 struct addrinfo hints;
333 struct addrinfo *result = NULL;
339 * we use SOCKET_STREAM here to get just one result
340 * back from getaddrinfo().
342 hints.ai_socktype = SOCK_STREAM;
343 hints.ai_flags = AI_NUMERICHOST | AI_NUMERICSERV;
345 if (strcasecmp(fam, "ip") == 0) {
346 hints.ai_family = AF_UNSPEC;
354 } else if (strcasecmp(fam, "ipv4") == 0) {
355 hints.ai_family = AF_INET;
360 } else if (strcasecmp(fam, "ipv6") == 0) {
361 hints.ai_family = AF_INET6;
367 errno = EAFNOSUPPORT;
371 snprintf(port_str, sizeof(port_str), "%u", port);
373 ret = getaddrinfo(addr, port_str, &hints, &result);
384 if (result->ai_socktype != SOCK_STREAM) {
390 ret = _tsocket_address_bsd_from_sockaddr(mem_ctx,
398 freeaddrinfo(result);
403 char *tsocket_address_inet_addr_string(const struct tsocket_address *addr,
406 struct tsocket_address_bsd *bsda = talloc_get_type(addr->private_data,
407 struct tsocket_address_bsd);
408 char addr_str[INET6_ADDRSTRLEN+1];
416 switch (bsda->u.sa.sa_family) {
418 str = inet_ntop(bsda->u.in.sin_family,
419 &bsda->u.in.sin_addr,
420 addr_str, sizeof(addr_str));
424 str = inet_ntop(bsda->u.in6.sin6_family,
425 &bsda->u.in6.sin6_addr,
426 addr_str, sizeof(addr_str));
438 return talloc_strdup(mem_ctx, str);
441 uint16_t tsocket_address_inet_port(const struct tsocket_address *addr)
443 struct tsocket_address_bsd *bsda = talloc_get_type(addr->private_data,
444 struct tsocket_address_bsd);
452 switch (bsda->u.sa.sa_family) {
454 port = ntohs(bsda->u.in.sin_port);
458 port = ntohs(bsda->u.in6.sin6_port);
469 int tsocket_address_inet_set_port(struct tsocket_address *addr,
472 struct tsocket_address_bsd *bsda = talloc_get_type(addr->private_data,
473 struct tsocket_address_bsd);
480 switch (bsda->u.sa.sa_family) {
482 bsda->u.in.sin_port = htons(port);
486 bsda->u.in6.sin6_port = htons(port);
497 bool tsocket_address_is_unix(const struct tsocket_address *addr)
499 struct tsocket_address_bsd *bsda = talloc_get_type(addr->private_data,
500 struct tsocket_address_bsd);
506 switch (bsda->u.sa.sa_family) {
514 int _tsocket_address_unix_from_path(TALLOC_CTX *mem_ctx,
516 struct tsocket_address **_addr,
517 const char *location)
519 struct sockaddr_un un;
527 if (strlen(path) > sizeof(un.sun_path)-1) {
528 errno = ENAMETOOLONG;
533 un.sun_family = AF_UNIX;
534 strncpy(un.sun_path, path, sizeof(un.sun_path)-1);
536 ret = _tsocket_address_bsd_from_sockaddr(mem_ctx,
537 (struct sockaddr *)p,
545 char *tsocket_address_unix_path(const struct tsocket_address *addr,
548 struct tsocket_address_bsd *bsda = talloc_get_type(addr->private_data,
549 struct tsocket_address_bsd);
557 switch (bsda->u.sa.sa_family) {
559 str = bsda->u.un.sun_path;
566 return talloc_strdup(mem_ctx, str);
569 static char *tsocket_address_bsd_string(const struct tsocket_address *addr,
572 struct tsocket_address_bsd *bsda = talloc_get_type(addr->private_data,
573 struct tsocket_address_bsd);
576 const char *prefix = NULL;
579 switch (bsda->u.sa.sa_family) {
581 return talloc_asprintf(mem_ctx, "unix:%s",
582 bsda->u.un.sun_path);
596 addr_str = tsocket_address_inet_addr_string(addr, mem_ctx);
601 port = tsocket_address_inet_port(addr);
603 str = talloc_asprintf(mem_ctx, "%s:%s:%u",
604 prefix, addr_str, port);
605 talloc_free(addr_str);
610 static struct tsocket_address *tsocket_address_bsd_copy(const struct tsocket_address *addr,
612 const char *location)
614 struct tsocket_address_bsd *bsda = talloc_get_type(addr->private_data,
615 struct tsocket_address_bsd);
616 struct tsocket_address *copy;
619 ret = _tsocket_address_bsd_from_sockaddr(mem_ctx,
631 static const struct tsocket_address_ops tsocket_address_bsd_ops = {
633 .string = tsocket_address_bsd_string,
634 .copy = tsocket_address_bsd_copy,
641 struct tevent_fd *fde;
642 bool optimize_recvfrom;
644 void *readable_private;
645 void (*readable_handler)(void *private_data);
646 void *writeable_private;
647 void (*writeable_handler)(void *private_data);
650 bool tdgram_bsd_optimize_recvfrom(struct tdgram_context *dgram,
653 struct tdgram_bsd *bsds =
654 talloc_get_type(_tdgram_context_data(dgram),
659 /* not a bsd socket */
663 old = bsds->optimize_recvfrom;
664 bsds->optimize_recvfrom = on;
669 static void tdgram_bsd_fde_handler(struct tevent_context *ev,
670 struct tevent_fd *fde,
674 struct tdgram_bsd *bsds = talloc_get_type_abort(private_data,
677 if (flags & TEVENT_FD_WRITE) {
678 bsds->writeable_handler(bsds->writeable_private);
681 if (flags & TEVENT_FD_READ) {
682 if (!bsds->readable_handler) {
683 TEVENT_FD_NOT_READABLE(bsds->fde);
686 bsds->readable_handler(bsds->readable_private);
691 static int tdgram_bsd_set_readable_handler(struct tdgram_bsd *bsds,
692 struct tevent_context *ev,
693 void (*handler)(void *private_data),
701 if (!bsds->readable_handler) {
704 bsds->readable_handler = NULL;
705 bsds->readable_private = NULL;
710 /* read and write must use the same tevent_context */
711 if (bsds->event_ptr != ev) {
712 if (bsds->readable_handler || bsds->writeable_handler) {
716 bsds->event_ptr = NULL;
717 TALLOC_FREE(bsds->fde);
720 if (tevent_fd_get_flags(bsds->fde) == 0) {
721 TALLOC_FREE(bsds->fde);
723 bsds->fde = tevent_add_fd(ev, bsds,
724 bsds->fd, TEVENT_FD_READ,
725 tdgram_bsd_fde_handler,
732 /* cache the event context we're running on */
733 bsds->event_ptr = ev;
734 } else if (!bsds->readable_handler) {
735 TEVENT_FD_READABLE(bsds->fde);
738 bsds->readable_handler = handler;
739 bsds->readable_private = private_data;
744 static int tdgram_bsd_set_writeable_handler(struct tdgram_bsd *bsds,
745 struct tevent_context *ev,
746 void (*handler)(void *private_data),
754 if (!bsds->writeable_handler) {
757 bsds->writeable_handler = NULL;
758 bsds->writeable_private = NULL;
759 TEVENT_FD_NOT_WRITEABLE(bsds->fde);
764 /* read and write must use the same tevent_context */
765 if (bsds->event_ptr != ev) {
766 if (bsds->readable_handler || bsds->writeable_handler) {
770 bsds->event_ptr = NULL;
771 TALLOC_FREE(bsds->fde);
774 if (tevent_fd_get_flags(bsds->fde) == 0) {
775 TALLOC_FREE(bsds->fde);
777 bsds->fde = tevent_add_fd(ev, bsds,
778 bsds->fd, TEVENT_FD_WRITE,
779 tdgram_bsd_fde_handler,
786 /* cache the event context we're running on */
787 bsds->event_ptr = ev;
788 } else if (!bsds->writeable_handler) {
789 TEVENT_FD_WRITEABLE(bsds->fde);
792 bsds->writeable_handler = handler;
793 bsds->writeable_private = private_data;
798 struct tdgram_bsd_recvfrom_state {
799 struct tdgram_context *dgram;
803 struct tsocket_address *src;
806 static int tdgram_bsd_recvfrom_destructor(struct tdgram_bsd_recvfrom_state *state)
808 struct tdgram_bsd *bsds = tdgram_context_data(state->dgram,
811 tdgram_bsd_set_readable_handler(bsds, NULL, NULL, NULL);
816 static void tdgram_bsd_recvfrom_handler(void *private_data);
818 static struct tevent_req *tdgram_bsd_recvfrom_send(TALLOC_CTX *mem_ctx,
819 struct tevent_context *ev,
820 struct tdgram_context *dgram)
822 struct tevent_req *req;
823 struct tdgram_bsd_recvfrom_state *state;
824 struct tdgram_bsd *bsds = tdgram_context_data(dgram, struct tdgram_bsd);
827 req = tevent_req_create(mem_ctx, &state,
828 struct tdgram_bsd_recvfrom_state);
833 state->dgram = dgram;
834 state->first_try= true;
839 talloc_set_destructor(state, tdgram_bsd_recvfrom_destructor);
841 if (bsds->fd == -1) {
842 tevent_req_error(req, ENOTCONN);
848 * this is a fast path, not waiting for the
849 * socket to become explicit readable gains
850 * about 10%-20% performance in benchmark tests.
852 if (bsds->optimize_recvfrom) {
854 * We only do the optimization on
855 * recvfrom if the caller asked for it.
857 * This is needed because in most cases
858 * we prefer to flush send buffers before
859 * receiving incoming requests.
861 tdgram_bsd_recvfrom_handler(req);
862 if (!tevent_req_is_in_progress(req)) {
867 ret = tdgram_bsd_set_readable_handler(bsds, ev,
868 tdgram_bsd_recvfrom_handler,
871 tevent_req_error(req, errno);
878 tevent_req_post(req, ev);
882 static void tdgram_bsd_recvfrom_handler(void *private_data)
884 struct tevent_req *req = talloc_get_type_abort(private_data,
886 struct tdgram_bsd_recvfrom_state *state = tevent_req_data(req,
887 struct tdgram_bsd_recvfrom_state);
888 struct tdgram_context *dgram = state->dgram;
889 struct tdgram_bsd *bsds = tdgram_context_data(dgram, struct tdgram_bsd);
890 struct tsocket_address_bsd *bsda;
895 ret = tsocket_bsd_pending(bsds->fd);
896 if (state->first_try && ret == 0) {
897 state->first_try = false;
901 state->first_try = false;
903 err = tsocket_bsd_error_from_errno(ret, errno, &retry);
908 if (tevent_req_error(req, err)) {
912 /* note that 'ret' can be 0 here */
913 state->buf = talloc_array(state, uint8_t, ret);
914 if (tevent_req_nomem(state->buf, req)) {
919 state->src = tsocket_address_create(state,
920 &tsocket_address_bsd_ops,
922 struct tsocket_address_bsd,
923 __location__ "bsd_recvfrom");
924 if (tevent_req_nomem(state->src, req)) {
929 bsda->sa_socklen = sizeof(bsda->u.ss);
930 #ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
931 bsda->u.sa.sa_len = bsda->sa_socklen;
934 ret = recvfrom(bsds->fd, state->buf, state->len, 0,
935 &bsda->u.sa, &bsda->sa_socklen);
936 err = tsocket_bsd_error_from_errno(ret, errno, &retry);
941 if (tevent_req_error(req, err)) {
946 * Some systems (FreeBSD, see bug #7115) return too much
947 * bytes in tsocket_bsd_pending()/ioctl(fd, FIONREAD, ...),
948 * the return value includes some IP/UDP header bytes,
949 * while recvfrom() just returns the payload.
951 state->buf = talloc_realloc(state, state->buf, uint8_t, ret);
952 if (tevent_req_nomem(state->buf, req)) {
957 tevent_req_done(req);
960 static ssize_t tdgram_bsd_recvfrom_recv(struct tevent_req *req,
964 struct tsocket_address **src)
966 struct tdgram_bsd_recvfrom_state *state = tevent_req_data(req,
967 struct tdgram_bsd_recvfrom_state);
970 ret = tsocket_simple_int_recv(req, perrno);
972 *buf = talloc_move(mem_ctx, &state->buf);
975 *src = talloc_move(mem_ctx, &state->src);
979 tevent_req_received(req);
983 struct tdgram_bsd_sendto_state {
984 struct tdgram_context *dgram;
988 const struct tsocket_address *dst;
993 static int tdgram_bsd_sendto_destructor(struct tdgram_bsd_sendto_state *state)
995 struct tdgram_bsd *bsds = tdgram_context_data(state->dgram,
998 tdgram_bsd_set_writeable_handler(bsds, NULL, NULL, NULL);
1003 static void tdgram_bsd_sendto_handler(void *private_data);
1005 static struct tevent_req *tdgram_bsd_sendto_send(TALLOC_CTX *mem_ctx,
1006 struct tevent_context *ev,
1007 struct tdgram_context *dgram,
1010 const struct tsocket_address *dst)
1012 struct tevent_req *req;
1013 struct tdgram_bsd_sendto_state *state;
1014 struct tdgram_bsd *bsds = tdgram_context_data(dgram, struct tdgram_bsd);
1017 req = tevent_req_create(mem_ctx, &state,
1018 struct tdgram_bsd_sendto_state);
1023 state->dgram = dgram;
1029 talloc_set_destructor(state, tdgram_bsd_sendto_destructor);
1031 if (bsds->fd == -1) {
1032 tevent_req_error(req, ENOTCONN);
1037 * this is a fast path, not waiting for the
1038 * socket to become explicit writeable gains
1039 * about 10%-20% performance in benchmark tests.
1041 tdgram_bsd_sendto_handler(req);
1042 if (!tevent_req_is_in_progress(req)) {
1046 ret = tdgram_bsd_set_writeable_handler(bsds, ev,
1047 tdgram_bsd_sendto_handler,
1050 tevent_req_error(req, errno);
1057 tevent_req_post(req, ev);
1061 static void tdgram_bsd_sendto_handler(void *private_data)
1063 struct tevent_req *req = talloc_get_type_abort(private_data,
1065 struct tdgram_bsd_sendto_state *state = tevent_req_data(req,
1066 struct tdgram_bsd_sendto_state);
1067 struct tdgram_context *dgram = state->dgram;
1068 struct tdgram_bsd *bsds = tdgram_context_data(dgram, struct tdgram_bsd);
1069 struct sockaddr *sa = NULL;
1070 socklen_t sa_socklen = 0;
1076 struct tsocket_address_bsd *bsda =
1077 talloc_get_type(state->dst->private_data,
1078 struct tsocket_address_bsd);
1081 sa_socklen = bsda->sa_socklen;
1084 ret = sendto(bsds->fd, state->buf, state->len, 0, sa, sa_socklen);
1085 err = tsocket_bsd_error_from_errno(ret, errno, &retry);
1091 if (err == EMSGSIZE) {
1092 /* round up in 1K increments */
1093 int bufsize = ((state->len + 1023) & (~1023));
1095 ret = setsockopt(bsds->fd, SOL_SOCKET, SO_SNDBUF, &bufsize,
1099 * We do the retry here, rather then via the
1100 * handler, as we only want to retry once for
1101 * this condition, so if there is a mismatch
1102 * between what setsockopt() accepts and what can
1103 * actually be sent, we do not end up in a
1107 ret = sendto(bsds->fd, state->buf, state->len,
1109 err = tsocket_bsd_error_from_errno(ret, errno, &retry);
1110 if (retry) { /* retry later */
1116 if (tevent_req_error(req, err)) {
1122 tevent_req_done(req);
1125 static ssize_t tdgram_bsd_sendto_recv(struct tevent_req *req, int *perrno)
1127 struct tdgram_bsd_sendto_state *state = tevent_req_data(req,
1128 struct tdgram_bsd_sendto_state);
1131 ret = tsocket_simple_int_recv(req, perrno);
1136 tevent_req_received(req);
1140 struct tdgram_bsd_disconnect_state {
1144 static struct tevent_req *tdgram_bsd_disconnect_send(TALLOC_CTX *mem_ctx,
1145 struct tevent_context *ev,
1146 struct tdgram_context *dgram)
1148 struct tdgram_bsd *bsds = tdgram_context_data(dgram, struct tdgram_bsd);
1149 struct tevent_req *req;
1150 struct tdgram_bsd_disconnect_state *state;
1155 req = tevent_req_create(mem_ctx, &state,
1156 struct tdgram_bsd_disconnect_state);
1161 if (bsds->fd == -1) {
1162 tevent_req_error(req, ENOTCONN);
1166 TALLOC_FREE(bsds->fde);
1167 ret = close(bsds->fd);
1169 err = tsocket_bsd_error_from_errno(ret, errno, &dummy);
1170 if (tevent_req_error(req, err)) {
1174 tevent_req_done(req);
1176 tevent_req_post(req, ev);
1180 static int tdgram_bsd_disconnect_recv(struct tevent_req *req,
1185 ret = tsocket_simple_int_recv(req, perrno);
1187 tevent_req_received(req);
1191 static const struct tdgram_context_ops tdgram_bsd_ops = {
1194 .recvfrom_send = tdgram_bsd_recvfrom_send,
1195 .recvfrom_recv = tdgram_bsd_recvfrom_recv,
1197 .sendto_send = tdgram_bsd_sendto_send,
1198 .sendto_recv = tdgram_bsd_sendto_recv,
1200 .disconnect_send = tdgram_bsd_disconnect_send,
1201 .disconnect_recv = tdgram_bsd_disconnect_recv,
1204 static int tdgram_bsd_destructor(struct tdgram_bsd *bsds)
1206 TALLOC_FREE(bsds->fde);
1207 if (bsds->fd != -1) {
1214 static int tdgram_bsd_dgram_socket(const struct tsocket_address *local,
1215 const struct tsocket_address *remote,
1217 TALLOC_CTX *mem_ctx,
1218 struct tdgram_context **_dgram,
1219 const char *location)
1221 struct tsocket_address_bsd *lbsda =
1222 talloc_get_type_abort(local->private_data,
1223 struct tsocket_address_bsd);
1224 struct tsocket_address_bsd *rbsda = NULL;
1225 struct tdgram_context *dgram;
1226 struct tdgram_bsd *bsds;
1229 bool do_bind = false;
1230 bool do_reuseaddr = false;
1231 bool do_ipv6only = false;
1232 bool is_inet = false;
1233 int sa_fam = lbsda->u.sa.sa_family;
1236 rbsda = talloc_get_type_abort(remote->private_data,
1237 struct tsocket_address_bsd);
1240 switch (lbsda->u.sa.sa_family) {
1246 if (lbsda->u.un.sun_path[0] != 0) {
1247 do_reuseaddr = true;
1252 if (lbsda->u.in.sin_port != 0) {
1253 do_reuseaddr = true;
1256 if (lbsda->u.in.sin_addr.s_addr != INADDR_ANY) {
1263 if (lbsda->u.in6.sin6_port != 0) {
1264 do_reuseaddr = true;
1267 if (memcmp(&in6addr_any,
1268 &lbsda->u.in6.sin6_addr,
1269 sizeof(in6addr_any)) != 0) {
1281 if (!do_bind && is_inet && rbsda) {
1282 sa_fam = rbsda->u.sa.sa_family;
1285 do_ipv6only = false;
1295 fd = socket(sa_fam, SOCK_DGRAM, 0);
1300 fd = tsocket_bsd_common_prepare_fd(fd, true);
1305 dgram = tdgram_context_create(mem_ctx,
1311 int saved_errno = errno;
1313 errno = saved_errno;
1318 talloc_set_destructor(bsds, tdgram_bsd_destructor);
1324 ret = setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY,
1325 (const void *)&val, sizeof(val));
1327 int saved_errno = errno;
1329 errno = saved_errno;
1338 ret = setsockopt(fd, SOL_SOCKET, SO_BROADCAST,
1339 (const void *)&val, sizeof(val));
1341 int saved_errno = errno;
1343 errno = saved_errno;
1351 ret = setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
1352 (const void *)&val, sizeof(val));
1354 int saved_errno = errno;
1356 errno = saved_errno;
1362 ret = bind(fd, &lbsda->u.sa, lbsda->sa_socklen);
1364 int saved_errno = errno;
1366 errno = saved_errno;
1372 if (rbsda->u.sa.sa_family != sa_fam) {
1378 ret = connect(fd, &rbsda->u.sa, rbsda->sa_socklen);
1380 int saved_errno = errno;
1382 errno = saved_errno;
1391 int _tdgram_bsd_existing_socket(TALLOC_CTX *mem_ctx,
1393 struct tdgram_context **_dgram,
1394 const char *location)
1396 struct tdgram_context *dgram;
1397 struct tdgram_bsd *bsds;
1399 dgram = tdgram_context_create(mem_ctx,
1409 talloc_set_destructor(bsds, tdgram_bsd_destructor);
1415 int _tdgram_inet_udp_socket(const struct tsocket_address *local,
1416 const struct tsocket_address *remote,
1417 TALLOC_CTX *mem_ctx,
1418 struct tdgram_context **dgram,
1419 const char *location)
1421 struct tsocket_address_bsd *lbsda =
1422 talloc_get_type_abort(local->private_data,
1423 struct tsocket_address_bsd);
1426 switch (lbsda->u.sa.sa_family) {
1438 ret = tdgram_bsd_dgram_socket(local, remote, false,
1439 mem_ctx, dgram, location);
1444 int _tdgram_inet_udp_broadcast_socket(const struct tsocket_address *local,
1445 TALLOC_CTX *mem_ctx,
1446 struct tdgram_context **dgram,
1447 const char *location)
1449 struct tsocket_address_bsd *lbsda =
1450 talloc_get_type_abort(local->private_data,
1451 struct tsocket_address_bsd);
1454 switch (lbsda->u.sa.sa_family) {
1468 ret = tdgram_bsd_dgram_socket(local, NULL, true,
1469 mem_ctx, dgram, location);
1474 int _tdgram_unix_socket(const struct tsocket_address *local,
1475 const struct tsocket_address *remote,
1476 TALLOC_CTX *mem_ctx,
1477 struct tdgram_context **dgram,
1478 const char *location)
1480 struct tsocket_address_bsd *lbsda =
1481 talloc_get_type_abort(local->private_data,
1482 struct tsocket_address_bsd);
1485 switch (lbsda->u.sa.sa_family) {
1493 ret = tdgram_bsd_dgram_socket(local, remote, false,
1494 mem_ctx, dgram, location);
1499 struct tstream_bsd {
1503 struct tevent_fd *fde;
1504 bool optimize_readv;
1506 void *readable_private;
1507 void (*readable_handler)(void *private_data);
1508 void *writeable_private;
1509 void (*writeable_handler)(void *private_data);
1512 bool tstream_bsd_optimize_readv(struct tstream_context *stream,
1515 struct tstream_bsd *bsds =
1516 talloc_get_type(_tstream_context_data(stream),
1517 struct tstream_bsd);
1521 /* not a bsd socket */
1525 old = bsds->optimize_readv;
1526 bsds->optimize_readv = on;
1531 static void tstream_bsd_fde_handler(struct tevent_context *ev,
1532 struct tevent_fd *fde,
1536 struct tstream_bsd *bsds = talloc_get_type_abort(private_data,
1537 struct tstream_bsd);
1539 if (flags & TEVENT_FD_WRITE) {
1540 bsds->writeable_handler(bsds->writeable_private);
1543 if (flags & TEVENT_FD_READ) {
1544 if (!bsds->readable_handler) {
1545 if (bsds->writeable_handler) {
1546 bsds->writeable_handler(bsds->writeable_private);
1549 TEVENT_FD_NOT_READABLE(bsds->fde);
1552 bsds->readable_handler(bsds->readable_private);
1557 static int tstream_bsd_set_readable_handler(struct tstream_bsd *bsds,
1558 struct tevent_context *ev,
1559 void (*handler)(void *private_data),
1567 if (!bsds->readable_handler) {
1570 bsds->readable_handler = NULL;
1571 bsds->readable_private = NULL;
1576 /* read and write must use the same tevent_context */
1577 if (bsds->event_ptr != ev) {
1578 if (bsds->readable_handler || bsds->writeable_handler) {
1582 bsds->event_ptr = NULL;
1583 TALLOC_FREE(bsds->fde);
1586 if (tevent_fd_get_flags(bsds->fde) == 0) {
1587 TALLOC_FREE(bsds->fde);
1589 bsds->fde = tevent_add_fd(ev, bsds,
1590 bsds->fd, TEVENT_FD_READ,
1591 tstream_bsd_fde_handler,
1598 /* cache the event context we're running on */
1599 bsds->event_ptr = ev;
1600 } else if (!bsds->readable_handler) {
1601 TEVENT_FD_READABLE(bsds->fde);
1604 bsds->readable_handler = handler;
1605 bsds->readable_private = private_data;
1610 static int tstream_bsd_set_writeable_handler(struct tstream_bsd *bsds,
1611 struct tevent_context *ev,
1612 void (*handler)(void *private_data),
1620 if (!bsds->writeable_handler) {
1623 bsds->writeable_handler = NULL;
1624 bsds->writeable_private = NULL;
1625 TEVENT_FD_NOT_WRITEABLE(bsds->fde);
1630 /* read and write must use the same tevent_context */
1631 if (bsds->event_ptr != ev) {
1632 if (bsds->readable_handler || bsds->writeable_handler) {
1636 bsds->event_ptr = NULL;
1637 TALLOC_FREE(bsds->fde);
1640 if (tevent_fd_get_flags(bsds->fde) == 0) {
1641 TALLOC_FREE(bsds->fde);
1643 bsds->fde = tevent_add_fd(ev, bsds,
1645 TEVENT_FD_READ | TEVENT_FD_WRITE,
1646 tstream_bsd_fde_handler,
1653 /* cache the event context we're running on */
1654 bsds->event_ptr = ev;
1655 } else if (!bsds->writeable_handler) {
1656 uint16_t flags = tevent_fd_get_flags(bsds->fde);
1657 flags |= TEVENT_FD_READ | TEVENT_FD_WRITE;
1658 tevent_fd_set_flags(bsds->fde, flags);
1661 bsds->writeable_handler = handler;
1662 bsds->writeable_private = private_data;
1667 static ssize_t tstream_bsd_pending_bytes(struct tstream_context *stream)
1669 struct tstream_bsd *bsds = tstream_context_data(stream,
1670 struct tstream_bsd);
1673 if (bsds->fd == -1) {
1678 ret = tsocket_bsd_pending(bsds->fd);
1683 struct tstream_bsd_readv_state {
1684 struct tstream_context *stream;
1686 struct iovec *vector;
1692 static int tstream_bsd_readv_destructor(struct tstream_bsd_readv_state *state)
1694 struct tstream_bsd *bsds = tstream_context_data(state->stream,
1695 struct tstream_bsd);
1697 tstream_bsd_set_readable_handler(bsds, NULL, NULL, NULL);
1702 static void tstream_bsd_readv_handler(void *private_data);
1704 static struct tevent_req *tstream_bsd_readv_send(TALLOC_CTX *mem_ctx,
1705 struct tevent_context *ev,
1706 struct tstream_context *stream,
1707 struct iovec *vector,
1710 struct tevent_req *req;
1711 struct tstream_bsd_readv_state *state;
1712 struct tstream_bsd *bsds = tstream_context_data(stream, struct tstream_bsd);
1715 req = tevent_req_create(mem_ctx, &state,
1716 struct tstream_bsd_readv_state);
1721 state->stream = stream;
1722 /* we make a copy of the vector so that we can modify it */
1723 state->vector = talloc_array(state, struct iovec, count);
1724 if (tevent_req_nomem(state->vector, req)) {
1727 memcpy(state->vector, vector, sizeof(struct iovec)*count);
1728 state->count = count;
1731 talloc_set_destructor(state, tstream_bsd_readv_destructor);
1733 if (bsds->fd == -1) {
1734 tevent_req_error(req, ENOTCONN);
1739 * this is a fast path, not waiting for the
1740 * socket to become explicit readable gains
1741 * about 10%-20% performance in benchmark tests.
1743 if (bsds->optimize_readv) {
1745 * We only do the optimization on
1746 * readv if the caller asked for it.
1748 * This is needed because in most cases
1749 * we prefer to flush send buffers before
1750 * receiving incoming requests.
1752 tstream_bsd_readv_handler(req);
1753 if (!tevent_req_is_in_progress(req)) {
1758 ret = tstream_bsd_set_readable_handler(bsds, ev,
1759 tstream_bsd_readv_handler,
1762 tevent_req_error(req, errno);
1769 tevent_req_post(req, ev);
1773 static void tstream_bsd_readv_handler(void *private_data)
1775 struct tevent_req *req = talloc_get_type_abort(private_data,
1777 struct tstream_bsd_readv_state *state = tevent_req_data(req,
1778 struct tstream_bsd_readv_state);
1779 struct tstream_context *stream = state->stream;
1780 struct tstream_bsd *bsds = tstream_context_data(stream, struct tstream_bsd);
1786 ret = readv(bsds->fd, state->vector, state->count);
1788 /* propagate end of file */
1789 tevent_req_error(req, EPIPE);
1792 err = tsocket_bsd_error_from_errno(ret, errno, &retry);
1797 if (tevent_req_error(req, err)) {
1803 _count = state->count; /* tstream has size_t count, readv has int */
1804 ok = iov_advance(&state->vector, &_count, ret);
1805 state->count = _count;
1808 tevent_req_error(req, EINVAL);
1812 if (state->count > 0) {
1813 /* we have more to read */
1817 tevent_req_done(req);
1820 static int tstream_bsd_readv_recv(struct tevent_req *req,
1823 struct tstream_bsd_readv_state *state = tevent_req_data(req,
1824 struct tstream_bsd_readv_state);
1827 ret = tsocket_simple_int_recv(req, perrno);
1832 tevent_req_received(req);
1836 struct tstream_bsd_writev_state {
1837 struct tstream_context *stream;
1839 struct iovec *vector;
1845 static int tstream_bsd_writev_destructor(struct tstream_bsd_writev_state *state)
1847 struct tstream_bsd *bsds = tstream_context_data(state->stream,
1848 struct tstream_bsd);
1850 tstream_bsd_set_writeable_handler(bsds, NULL, NULL, NULL);
1855 static void tstream_bsd_writev_handler(void *private_data);
1857 static struct tevent_req *tstream_bsd_writev_send(TALLOC_CTX *mem_ctx,
1858 struct tevent_context *ev,
1859 struct tstream_context *stream,
1860 const struct iovec *vector,
1863 struct tevent_req *req;
1864 struct tstream_bsd_writev_state *state;
1865 struct tstream_bsd *bsds = tstream_context_data(stream, struct tstream_bsd);
1868 req = tevent_req_create(mem_ctx, &state,
1869 struct tstream_bsd_writev_state);
1874 state->stream = stream;
1875 /* we make a copy of the vector so that we can modify it */
1876 state->vector = talloc_array(state, struct iovec, count);
1877 if (tevent_req_nomem(state->vector, req)) {
1880 memcpy(state->vector, vector, sizeof(struct iovec)*count);
1881 state->count = count;
1884 talloc_set_destructor(state, tstream_bsd_writev_destructor);
1886 if (bsds->fd == -1) {
1887 tevent_req_error(req, ENOTCONN);
1892 * this is a fast path, not waiting for the
1893 * socket to become explicit writeable gains
1894 * about 10%-20% performance in benchmark tests.
1896 tstream_bsd_writev_handler(req);
1897 if (!tevent_req_is_in_progress(req)) {
1901 ret = tstream_bsd_set_writeable_handler(bsds, ev,
1902 tstream_bsd_writev_handler,
1905 tevent_req_error(req, errno);
1912 tevent_req_post(req, ev);
1916 static void tstream_bsd_writev_handler(void *private_data)
1918 struct tevent_req *req = talloc_get_type_abort(private_data,
1920 struct tstream_bsd_writev_state *state = tevent_req_data(req,
1921 struct tstream_bsd_writev_state);
1922 struct tstream_context *stream = state->stream;
1923 struct tstream_bsd *bsds = tstream_context_data(stream, struct tstream_bsd);
1929 ret = writev(bsds->fd, state->vector, state->count);
1931 /* propagate end of file */
1932 tevent_req_error(req, EPIPE);
1935 err = tsocket_bsd_error_from_errno(ret, errno, &retry);
1940 if (tevent_req_error(req, err)) {
1946 _count = state->count; /* tstream has size_t count, writev has int */
1947 ok = iov_advance(&state->vector, &_count, ret);
1948 state->count = _count;
1951 tevent_req_error(req, EINVAL);
1955 if (state->count > 0) {
1956 /* we have more to read */
1960 tevent_req_done(req);
1963 static int tstream_bsd_writev_recv(struct tevent_req *req, int *perrno)
1965 struct tstream_bsd_writev_state *state = tevent_req_data(req,
1966 struct tstream_bsd_writev_state);
1969 ret = tsocket_simple_int_recv(req, perrno);
1974 tevent_req_received(req);
1978 struct tstream_bsd_disconnect_state {
1982 static struct tevent_req *tstream_bsd_disconnect_send(TALLOC_CTX *mem_ctx,
1983 struct tevent_context *ev,
1984 struct tstream_context *stream)
1986 struct tstream_bsd *bsds = tstream_context_data(stream, struct tstream_bsd);
1987 struct tevent_req *req;
1988 struct tstream_bsd_disconnect_state *state;
1993 req = tevent_req_create(mem_ctx, &state,
1994 struct tstream_bsd_disconnect_state);
1999 if (bsds->fd == -1) {
2000 tevent_req_error(req, ENOTCONN);
2004 TALLOC_FREE(bsds->fde);
2005 ret = close(bsds->fd);
2007 err = tsocket_bsd_error_from_errno(ret, errno, &dummy);
2008 if (tevent_req_error(req, err)) {
2012 tevent_req_done(req);
2014 tevent_req_post(req, ev);
2018 static int tstream_bsd_disconnect_recv(struct tevent_req *req,
2023 ret = tsocket_simple_int_recv(req, perrno);
2025 tevent_req_received(req);
2029 static const struct tstream_context_ops tstream_bsd_ops = {
2032 .pending_bytes = tstream_bsd_pending_bytes,
2034 .readv_send = tstream_bsd_readv_send,
2035 .readv_recv = tstream_bsd_readv_recv,
2037 .writev_send = tstream_bsd_writev_send,
2038 .writev_recv = tstream_bsd_writev_recv,
2040 .disconnect_send = tstream_bsd_disconnect_send,
2041 .disconnect_recv = tstream_bsd_disconnect_recv,
2044 static int tstream_bsd_destructor(struct tstream_bsd *bsds)
2046 TALLOC_FREE(bsds->fde);
2047 if (bsds->fd != -1) {
2054 int _tstream_bsd_existing_socket(TALLOC_CTX *mem_ctx,
2056 struct tstream_context **_stream,
2057 const char *location)
2059 struct tstream_context *stream;
2060 struct tstream_bsd *bsds;
2062 stream = tstream_context_create(mem_ctx,
2072 talloc_set_destructor(bsds, tstream_bsd_destructor);
2078 struct tstream_bsd_connect_state {
2080 struct tevent_fd *fde;
2081 struct tstream_conext *stream;
2082 struct tsocket_address *local;
2085 static int tstream_bsd_connect_destructor(struct tstream_bsd_connect_state *state)
2087 TALLOC_FREE(state->fde);
2088 if (state->fd != -1) {
2096 static void tstream_bsd_connect_fde_handler(struct tevent_context *ev,
2097 struct tevent_fd *fde,
2099 void *private_data);
2101 static struct tevent_req *tstream_bsd_connect_send(TALLOC_CTX *mem_ctx,
2102 struct tevent_context *ev,
2104 const struct tsocket_address *local,
2105 const struct tsocket_address *remote)
2107 struct tevent_req *req;
2108 struct tstream_bsd_connect_state *state;
2109 struct tsocket_address_bsd *lbsda =
2110 talloc_get_type_abort(local->private_data,
2111 struct tsocket_address_bsd);
2112 struct tsocket_address_bsd *lrbsda = NULL;
2113 struct tsocket_address_bsd *rbsda =
2114 talloc_get_type_abort(remote->private_data,
2115 struct tsocket_address_bsd);
2117 bool do_bind = false;
2118 bool do_reuseaddr = false;
2119 bool do_ipv6only = false;
2120 bool is_inet = false;
2121 int sa_fam = lbsda->u.sa.sa_family;
2123 req = tevent_req_create(mem_ctx, &state,
2124 struct tstream_bsd_connect_state);
2131 talloc_set_destructor(state, tstream_bsd_connect_destructor);
2133 /* give the wrappers a chance to report an error */
2134 if (sys_errno != 0) {
2135 tevent_req_error(req, sys_errno);
2139 switch (lbsda->u.sa.sa_family) {
2141 if (lbsda->u.un.sun_path[0] != 0) {
2142 do_reuseaddr = true;
2147 if (lbsda->u.in.sin_port != 0) {
2148 do_reuseaddr = true;
2151 if (lbsda->u.in.sin_addr.s_addr != INADDR_ANY) {
2158 if (lbsda->u.in6.sin6_port != 0) {
2159 do_reuseaddr = true;
2162 if (memcmp(&in6addr_any,
2163 &lbsda->u.in6.sin6_addr,
2164 sizeof(in6addr_any)) != 0) {
2172 tevent_req_error(req, EINVAL);
2176 if (!do_bind && is_inet) {
2177 sa_fam = rbsda->u.sa.sa_family;
2180 do_ipv6only = false;
2191 state->local = tsocket_address_create(state,
2192 &tsocket_address_bsd_ops,
2194 struct tsocket_address_bsd,
2195 __location__ "bsd_connect");
2196 if (tevent_req_nomem(state->local, req)) {
2200 ZERO_STRUCTP(lrbsda);
2201 lrbsda->sa_socklen = sizeof(lrbsda->u.ss);
2202 #ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
2203 lrbsda->u.sa.sa_len = lrbsda->sa_socklen;
2207 state->fd = socket(sa_fam, SOCK_STREAM, 0);
2208 if (state->fd == -1) {
2209 tevent_req_error(req, errno);
2213 state->fd = tsocket_bsd_common_prepare_fd(state->fd, true);
2214 if (state->fd == -1) {
2215 tevent_req_error(req, errno);
2223 ret = setsockopt(state->fd, IPPROTO_IPV6, IPV6_V6ONLY,
2224 (const void *)&val, sizeof(val));
2226 tevent_req_error(req, errno);
2235 ret = setsockopt(state->fd, SOL_SOCKET, SO_REUSEADDR,
2236 (const void *)&val, sizeof(val));
2238 tevent_req_error(req, errno);
2244 ret = bind(state->fd, &lbsda->u.sa, lbsda->sa_socklen);
2246 tevent_req_error(req, errno);
2251 if (rbsda->u.sa.sa_family != sa_fam) {
2252 tevent_req_error(req, EINVAL);
2256 ret = connect(state->fd, &rbsda->u.sa, rbsda->sa_socklen);
2258 if (errno == EINPROGRESS) {
2261 tevent_req_error(req, errno);
2265 if (!state->local) {
2266 tevent_req_done(req);
2270 ret = getsockname(state->fd, &lrbsda->u.sa, &lrbsda->sa_socklen);
2272 tevent_req_error(req, errno);
2276 tevent_req_done(req);
2280 state->fde = tevent_add_fd(ev, state,
2282 TEVENT_FD_READ | TEVENT_FD_WRITE,
2283 tstream_bsd_connect_fde_handler,
2285 if (tevent_req_nomem(state->fde, req)) {
2292 tevent_req_post(req, ev);
2296 static void tstream_bsd_connect_fde_handler(struct tevent_context *ev,
2297 struct tevent_fd *fde,
2301 struct tevent_req *req = talloc_get_type_abort(private_data,
2303 struct tstream_bsd_connect_state *state = tevent_req_data(req,
2304 struct tstream_bsd_connect_state);
2305 struct tsocket_address_bsd *lrbsda = NULL;
2308 socklen_t len = sizeof(error);
2312 ret = getsockopt(state->fd, SOL_SOCKET, SO_ERROR, &error, &len);
2319 err = tsocket_bsd_error_from_errno(ret, errno, &retry);
2324 if (tevent_req_error(req, err)) {
2328 if (!state->local) {
2329 tevent_req_done(req);
2333 lrbsda = talloc_get_type_abort(state->local->private_data,
2334 struct tsocket_address_bsd);
2336 ret = getsockname(state->fd, &lrbsda->u.sa, &lrbsda->sa_socklen);
2338 tevent_req_error(req, errno);
2342 tevent_req_done(req);
2345 static int tstream_bsd_connect_recv(struct tevent_req *req,
2347 TALLOC_CTX *mem_ctx,
2348 struct tstream_context **stream,
2349 struct tsocket_address **local,
2350 const char *location)
2352 struct tstream_bsd_connect_state *state = tevent_req_data(req,
2353 struct tstream_bsd_connect_state);
2356 ret = tsocket_simple_int_recv(req, perrno);
2358 ret = _tstream_bsd_existing_socket(mem_ctx,
2366 TALLOC_FREE(state->fde);
2370 *local = talloc_move(mem_ctx, &state->local);
2375 tevent_req_received(req);
2379 struct tevent_req * tstream_inet_tcp_connect_send(TALLOC_CTX *mem_ctx,
2380 struct tevent_context *ev,
2381 const struct tsocket_address *local,
2382 const struct tsocket_address *remote)
2384 struct tsocket_address_bsd *lbsda =
2385 talloc_get_type_abort(local->private_data,
2386 struct tsocket_address_bsd);
2387 struct tevent_req *req;
2390 switch (lbsda->u.sa.sa_family) {
2402 req = tstream_bsd_connect_send(mem_ctx, ev, sys_errno, local, remote);
2407 int _tstream_inet_tcp_connect_recv(struct tevent_req *req,
2409 TALLOC_CTX *mem_ctx,
2410 struct tstream_context **stream,
2411 struct tsocket_address **local,
2412 const char *location)
2414 return tstream_bsd_connect_recv(req, perrno,
2415 mem_ctx, stream, local,
2419 struct tevent_req * tstream_unix_connect_send(TALLOC_CTX *mem_ctx,
2420 struct tevent_context *ev,
2421 const struct tsocket_address *local,
2422 const struct tsocket_address *remote)
2424 struct tsocket_address_bsd *lbsda =
2425 talloc_get_type_abort(local->private_data,
2426 struct tsocket_address_bsd);
2427 struct tevent_req *req;
2430 switch (lbsda->u.sa.sa_family) {
2438 req = tstream_bsd_connect_send(mem_ctx, ev, sys_errno, local, remote);
2443 int _tstream_unix_connect_recv(struct tevent_req *req,
2445 TALLOC_CTX *mem_ctx,
2446 struct tstream_context **stream,
2447 const char *location)
2449 return tstream_bsd_connect_recv(req, perrno,
2450 mem_ctx, stream, NULL,
2454 int _tstream_unix_socketpair(TALLOC_CTX *mem_ctx1,
2455 struct tstream_context **_stream1,
2456 TALLOC_CTX *mem_ctx2,
2457 struct tstream_context **_stream2,
2458 const char *location)
2464 struct tstream_context *stream1 = NULL;
2465 struct tstream_context *stream2 = NULL;
2467 ret = socketpair(AF_UNIX, SOCK_STREAM, 0, fds);
2474 fd1 = tsocket_bsd_common_prepare_fd(fd1, true);
2476 int sys_errno = errno;
2482 fd2 = tsocket_bsd_common_prepare_fd(fd2, true);
2484 int sys_errno = errno;
2490 ret = _tstream_bsd_existing_socket(mem_ctx1,
2495 int sys_errno = errno;
2502 ret = _tstream_bsd_existing_socket(mem_ctx2,
2507 int sys_errno = errno;
2508 talloc_free(stream1);
2514 *_stream1 = stream1;
2515 *_stream2 = stream2;