/* Unix SMB/CIFS implementation. Copyright (C) Stefan Metzmacher 2009 ** NOTE! The following LGPL license applies to the tevent ** library. This does NOT imply that all of Samba is released ** under the LGPL This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, see . */ #include "replace.h" #include "system/filesys.h" #include "system/network.h" #include "tsocket.h" #include "tsocket_internal.h" static int tsocket_bsd_error_from_errno(int ret, int sys_errno, bool *retry) { *retry = false; if (ret >= 0) { return 0; } if (ret != -1) { return EIO; } if (sys_errno == 0) { return EIO; } if (sys_errno == EINTR) { *retry = true; return sys_errno; } if (sys_errno == EINPROGRESS) { *retry = true; return sys_errno; } if (sys_errno == EAGAIN) { *retry = true; return sys_errno; } #ifdef EWOULDBLOCK if (sys_errno == EWOULDBLOCK) { *retry = true; return sys_errno; } #endif return sys_errno; } static int tsocket_bsd_common_prepare_fd(int fd, bool high_fd) { int i; int sys_errno = 0; int fds[3]; int num_fds = 0; int result, flags; if (fd == -1) { return -1; } /* first make a fd >= 3 */ if (high_fd) { while (fd < 3) { fds[num_fds++] = fd; fd = dup(fd); if (fd == -1) { sys_errno = errno; break; } } for (i=0; i= 0) { flags |= FD_CLOEXEC; result = fcntl(fd, F_SETFD, flags); } if (result < 0) { goto fail; } #endif return fd; fail: if (fd != -1) { sys_errno = errno; close(fd); errno = sys_errno; } return -1; } static ssize_t tsocket_bsd_pending(int fd) { int ret; int value = 0; ret = ioctl(fd, FIONREAD, &value); if (ret == -1) { return ret; } if (ret == 0) { if (value == 0) { int error=0; socklen_t len = sizeof(error); /* * if no data is available check if the socket * is in error state. For dgram sockets * it's the way to return ICMP error messages * of connected sockets to the caller. */ ret = getsockopt(fd, SOL_SOCKET, SO_ERROR, &error, &len); if (ret == -1) { return ret; } if (error != 0) { errno = error; return -1; } } return value; } /* this should not be reached */ errno = EIO; return -1; } static const struct tsocket_address_ops tsocket_address_bsd_ops; struct tsocket_address_bsd { union { struct sockaddr sa; struct sockaddr_in in; #ifdef HAVE_IPV6 struct sockaddr_in6 in6; #endif struct sockaddr_un un; struct sockaddr_storage ss; } u; }; static int _tsocket_address_bsd_from_sockaddr(TALLOC_CTX *mem_ctx, struct sockaddr *sa, socklen_t sa_len, struct tsocket_address **_addr, const char *location) { struct tsocket_address *addr; struct tsocket_address_bsd *bsda; switch (sa->sa_family) { case AF_UNIX: if (sa_len < sizeof(struct sockaddr_un)) { errno = EINVAL; return -1; } break; case AF_INET: if (sa_len < sizeof(struct sockaddr_in)) { errno = EINVAL; return -1; } break; #ifdef HAVE_IPV6 case AF_INET6: if (sa_len < sizeof(struct sockaddr_in6)) { errno = EINVAL; return -1; } break; #endif default: errno = EAFNOSUPPORT; return -1; } if (sa_len > sizeof(struct sockaddr_storage)) { errno = EINVAL; return -1; } addr = tsocket_address_create(mem_ctx, &tsocket_address_bsd_ops, &bsda, struct tsocket_address_bsd, location); if (!addr) { errno = ENOMEM; return -1; } ZERO_STRUCTP(bsda); memcpy(&bsda->u.ss, sa, sa_len); *_addr = addr; return 0; } int _tsocket_address_inet_from_strings(TALLOC_CTX *mem_ctx, const char *fam, const char *addr, uint16_t port, struct tsocket_address **_addr, const char *location) { struct addrinfo hints; struct addrinfo *result = NULL; char port_str[6]; int ret; ZERO_STRUCT(hints); /* * we use SOCKET_STREAM here to get just one result * back from getaddrinfo(). */ hints.ai_socktype = SOCK_STREAM; hints.ai_flags = AI_NUMERICHOST | AI_NUMERICSERV; if (strcasecmp(fam, "ip") == 0) { hints.ai_family = AF_UNSPEC; if (!addr) { #ifdef HAVE_IPV6 addr = "::"; #else addr = "0.0.0.0"; #endif } } else if (strcasecmp(fam, "ipv4") == 0) { hints.ai_family = AF_INET; if (!addr) { addr = "0.0.0.0"; } #ifdef HAVE_IPV6 } else if (strcasecmp(fam, "ipv6") == 0) { hints.ai_family = AF_INET6; if (!addr) { addr = "::"; } #endif } else { errno = EAFNOSUPPORT; return -1; } snprintf(port_str, sizeof(port_str) - 1, "%u", port); ret = getaddrinfo(addr, port_str, &hints, &result); if (ret != 0) { switch (ret) { case EAI_FAIL: errno = EINVAL; break; } ret = -1; goto done; } if (result->ai_socktype != SOCK_STREAM) { errno = EINVAL; ret = -1; goto done; } ret = _tsocket_address_bsd_from_sockaddr(mem_ctx, result->ai_addr, result->ai_addrlen, _addr, location); done: if (result) { freeaddrinfo(result); } return ret; } char *tsocket_address_inet_addr_string(const struct tsocket_address *addr, TALLOC_CTX *mem_ctx) { struct tsocket_address_bsd *bsda = talloc_get_type(addr->private_data, struct tsocket_address_bsd); char addr_str[INET6_ADDRSTRLEN+1]; const char *str; if (!bsda) { errno = EINVAL; return NULL; } switch (bsda->u.sa.sa_family) { case AF_INET: str = inet_ntop(bsda->u.in.sin_family, &bsda->u.in.sin_addr, addr_str, sizeof(addr_str)); break; #ifdef HAVE_IPV6 case AF_INET6: str = inet_ntop(bsda->u.in6.sin6_family, &bsda->u.in6.sin6_addr, addr_str, sizeof(addr_str)); break; #endif default: errno = EINVAL; return NULL; } if (!str) { return NULL; } return talloc_strdup(mem_ctx, str); } uint16_t tsocket_address_inet_port(const struct tsocket_address *addr) { struct tsocket_address_bsd *bsda = talloc_get_type(addr->private_data, struct tsocket_address_bsd); uint16_t port = 0; if (!bsda) { errno = EINVAL; return 0; } switch (bsda->u.sa.sa_family) { case AF_INET: port = ntohs(bsda->u.in.sin_port); break; #ifdef HAVE_IPV6 case AF_INET6: port = ntohs(bsda->u.in6.sin6_port); break; #endif default: errno = EINVAL; return 0; } return port; } int tsocket_address_inet_set_port(struct tsocket_address *addr, uint16_t port) { struct tsocket_address_bsd *bsda = talloc_get_type(addr->private_data, struct tsocket_address_bsd); if (!bsda) { errno = EINVAL; return -1; } switch (bsda->u.sa.sa_family) { case AF_INET: bsda->u.in.sin_port = htons(port); break; #ifdef HAVE_IPV6 case AF_INET6: bsda->u.in6.sin6_port = htons(port); break; #endif default: errno = EINVAL; return -1; } return 0; } int _tsocket_address_unix_from_path(TALLOC_CTX *mem_ctx, const char *path, struct tsocket_address **_addr, const char *location) { struct sockaddr_un un; void *p = &un; int ret; if (!path) { path = ""; } ZERO_STRUCT(un); un.sun_family = AF_UNIX; strncpy(un.sun_path, path, sizeof(un.sun_path)); ret = _tsocket_address_bsd_from_sockaddr(mem_ctx, (struct sockaddr *)p, sizeof(un), _addr, location); return ret; } char *tsocket_address_unix_path(const struct tsocket_address *addr, TALLOC_CTX *mem_ctx) { struct tsocket_address_bsd *bsda = talloc_get_type(addr->private_data, struct tsocket_address_bsd); const char *str; if (!bsda) { errno = EINVAL; return NULL; } switch (bsda->u.sa.sa_family) { case AF_UNIX: str = bsda->u.un.sun_path; break; default: errno = EINVAL; return NULL; } return talloc_strdup(mem_ctx, str); } static char *tsocket_address_bsd_string(const struct tsocket_address *addr, TALLOC_CTX *mem_ctx) { struct tsocket_address_bsd *bsda = talloc_get_type(addr->private_data, struct tsocket_address_bsd); char *str; char *addr_str; const char *prefix = NULL; uint16_t port; switch (bsda->u.sa.sa_family) { case AF_UNIX: return talloc_asprintf(mem_ctx, "unix:%s", bsda->u.un.sun_path); case AF_INET: prefix = "ipv4"; break; #ifdef HAVE_IPV6 case AF_INET6: prefix = "ipv6"; break; #endif default: errno = EINVAL; return NULL; } addr_str = tsocket_address_inet_addr_string(addr, mem_ctx); if (!addr_str) { return NULL; } port = tsocket_address_inet_port(addr); str = talloc_asprintf(mem_ctx, "%s:%s:%u", prefix, addr_str, port); talloc_free(addr_str); return str; } static struct tsocket_address *tsocket_address_bsd_copy(const struct tsocket_address *addr, TALLOC_CTX *mem_ctx, const char *location) { struct tsocket_address_bsd *bsda = talloc_get_type(addr->private_data, struct tsocket_address_bsd); struct tsocket_address *copy; int ret; ret = _tsocket_address_bsd_from_sockaddr(mem_ctx, &bsda->u.sa, sizeof(bsda->u.ss), ©, location); if (ret != 0) { return NULL; } return copy; } static const struct tsocket_address_ops tsocket_address_bsd_ops = { .name = "bsd", .string = tsocket_address_bsd_string, .copy = tsocket_address_bsd_copy, }; struct tdgram_bsd { int fd; void *event_ptr; struct tevent_fd *fde; void *readable_private; void (*readable_handler)(void *private_data); void *writeable_private; void (*writeable_handler)(void *private_data); }; static void tdgram_bsd_fde_handler(struct tevent_context *ev, struct tevent_fd *fde, uint16_t flags, void *private_data) { struct tdgram_bsd *bsds = talloc_get_type_abort(private_data, struct tdgram_bsd); if (flags & TEVENT_FD_WRITE) { bsds->writeable_handler(bsds->writeable_private); return; } if (flags & TEVENT_FD_READ) { if (!bsds->readable_handler) { TEVENT_FD_NOT_READABLE(bsds->fde); return; } bsds->readable_handler(bsds->readable_private); return; } } static int tdgram_bsd_set_readable_handler(struct tdgram_bsd *bsds, struct tevent_context *ev, void (*handler)(void *private_data), void *private_data) { if (ev == NULL) { if (handler) { errno = EINVAL; return -1; } if (!bsds->readable_handler) { return 0; } bsds->readable_handler = NULL; bsds->readable_private = NULL; return 0; } /* read and write must use the same tevent_context */ if (bsds->event_ptr != ev) { if (bsds->readable_handler || bsds->writeable_handler) { errno = EINVAL; return -1; } bsds->event_ptr = NULL; TALLOC_FREE(bsds->fde); } if (bsds->fde == NULL) { bsds->fde = tevent_add_fd(ev, bsds, bsds->fd, TEVENT_FD_READ, tdgram_bsd_fde_handler, bsds); if (!bsds->fde) { return -1; } /* cache the event context we're running on */ bsds->event_ptr = ev; } else if (!bsds->readable_handler) { TEVENT_FD_READABLE(bsds->fde); } bsds->readable_handler = handler; bsds->readable_private = private_data; return 0; } static int tdgram_bsd_set_writeable_handler(struct tdgram_bsd *bsds, struct tevent_context *ev, void (*handler)(void *private_data), void *private_data) { if (ev == NULL) { if (handler) { errno = EINVAL; return -1; } if (!bsds->writeable_handler) { return 0; } bsds->writeable_handler = NULL; bsds->writeable_private = NULL; TEVENT_FD_NOT_WRITEABLE(bsds->fde); return 0; } /* read and write must use the same tevent_context */ if (bsds->event_ptr != ev) { if (bsds->readable_handler || bsds->writeable_handler) { errno = EINVAL; return -1; } bsds->event_ptr = NULL; TALLOC_FREE(bsds->fde); } if (bsds->fde == NULL) { bsds->fde = tevent_add_fd(ev, bsds, bsds->fd, TEVENT_FD_WRITE, tdgram_bsd_fde_handler, bsds); if (!bsds->fde) { return -1; } /* cache the event context we're running on */ bsds->event_ptr = ev; } else if (!bsds->writeable_handler) { TEVENT_FD_WRITEABLE(bsds->fde); } bsds->writeable_handler = handler; bsds->writeable_private = private_data; return 0; } struct tdgram_bsd_recvfrom_state { struct tdgram_context *dgram; uint8_t *buf; size_t len; struct tsocket_address *src; }; static int tdgram_bsd_recvfrom_destructor(struct tdgram_bsd_recvfrom_state *state) { struct tdgram_bsd *bsds = tdgram_context_data(state->dgram, struct tdgram_bsd); tdgram_bsd_set_readable_handler(bsds, NULL, NULL, NULL); return 0; } static void tdgram_bsd_recvfrom_handler(void *private_data); static struct tevent_req *tdgram_bsd_recvfrom_send(TALLOC_CTX *mem_ctx, struct tevent_context *ev, struct tdgram_context *dgram) { struct tevent_req *req; struct tdgram_bsd_recvfrom_state *state; struct tdgram_bsd *bsds = tdgram_context_data(dgram, struct tdgram_bsd); int ret; req = tevent_req_create(mem_ctx, &state, struct tdgram_bsd_recvfrom_state); if (!req) { return NULL; } state->dgram = dgram; state->buf = NULL; state->len = 0; state->src = NULL; talloc_set_destructor(state, tdgram_bsd_recvfrom_destructor); if (bsds->fd == -1) { tevent_req_error(req, ENOTCONN); goto post; } /* * this is a fast path, not waiting for the * socket to become explicit readable gains * about 10%-20% performance in benchmark tests. */ tdgram_bsd_recvfrom_handler(req); if (!tevent_req_is_in_progress(req)) { goto post; } ret = tdgram_bsd_set_readable_handler(bsds, ev, tdgram_bsd_recvfrom_handler, req); if (ret == -1) { tevent_req_error(req, errno); goto post; } return req; post: tevent_req_post(req, ev); return req; } static void tdgram_bsd_recvfrom_handler(void *private_data) { struct tevent_req *req = talloc_get_type_abort(private_data, struct tevent_req); struct tdgram_bsd_recvfrom_state *state = tevent_req_data(req, struct tdgram_bsd_recvfrom_state); struct tdgram_context *dgram = state->dgram; struct tdgram_bsd *bsds = tdgram_context_data(dgram, struct tdgram_bsd); struct tsocket_address_bsd *bsda; ssize_t ret; struct sockaddr *sa = NULL; socklen_t sa_len = 0; int err; bool retry; ret = tsocket_bsd_pending(bsds->fd); if (ret == 0) { /* retry later */ return; } err = tsocket_bsd_error_from_errno(ret, errno, &retry); if (retry) { /* retry later */ return; } if (tevent_req_error(req, err)) { return; } state->buf = talloc_array(state, uint8_t, ret); if (tevent_req_nomem(state->buf, req)) { return; } state->len = ret; state->src = tsocket_address_create(state, &tsocket_address_bsd_ops, &bsda, struct tsocket_address_bsd, __location__ "bsd_recvfrom"); if (tevent_req_nomem(state->src, req)) { return; } ZERO_STRUCTP(bsda); sa = &bsda->u.sa; sa_len = sizeof(bsda->u.ss); /* * for unix sockets we can't use the size of sockaddr_storage * we would get EINVAL */ if (bsda->u.sa.sa_family == AF_UNIX) { sa_len = sizeof(bsda->u.un); } ret = recvfrom(bsds->fd, state->buf, state->len, 0, sa, &sa_len); err = tsocket_bsd_error_from_errno(ret, errno, &retry); if (retry) { /* retry later */ return; } if (tevent_req_error(req, err)) { return; } if (ret != state->len) { tevent_req_error(req, EIO); return; } tevent_req_done(req); } static ssize_t tdgram_bsd_recvfrom_recv(struct tevent_req *req, int *perrno, TALLOC_CTX *mem_ctx, uint8_t **buf, struct tsocket_address **src) { struct tdgram_bsd_recvfrom_state *state = tevent_req_data(req, struct tdgram_bsd_recvfrom_state); ssize_t ret; ret = tsocket_simple_int_recv(req, perrno); if (ret == 0) { *buf = talloc_move(mem_ctx, &state->buf); ret = state->len; if (src) { *src = talloc_move(mem_ctx, &state->src); } } tevent_req_received(req); return ret; } struct tdgram_bsd_sendto_state { struct tdgram_context *dgram; const uint8_t *buf; size_t len; const struct tsocket_address *dst; ssize_t ret; }; static int tdgram_bsd_sendto_destructor(struct tdgram_bsd_sendto_state *state) { struct tdgram_bsd *bsds = tdgram_context_data(state->dgram, struct tdgram_bsd); tdgram_bsd_set_writeable_handler(bsds, NULL, NULL, NULL); return 0; } static void tdgram_bsd_sendto_handler(void *private_data); static struct tevent_req *tdgram_bsd_sendto_send(TALLOC_CTX *mem_ctx, struct tevent_context *ev, struct tdgram_context *dgram, const uint8_t *buf, size_t len, const struct tsocket_address *dst) { struct tevent_req *req; struct tdgram_bsd_sendto_state *state; struct tdgram_bsd *bsds = tdgram_context_data(dgram, struct tdgram_bsd); int ret; req = tevent_req_create(mem_ctx, &state, struct tdgram_bsd_sendto_state); if (!req) { return NULL; } state->dgram = dgram; state->buf = buf; state->len = len; state->dst = dst; state->ret = -1; talloc_set_destructor(state, tdgram_bsd_sendto_destructor); if (bsds->fd == -1) { tevent_req_error(req, ENOTCONN); goto post; } /* * this is a fast path, not waiting for the * socket to become explicit writeable gains * about 10%-20% performance in benchmark tests. */ tdgram_bsd_sendto_handler(req); if (!tevent_req_is_in_progress(req)) { goto post; } ret = tdgram_bsd_set_writeable_handler(bsds, ev, tdgram_bsd_sendto_handler, req); if (ret == -1) { tevent_req_error(req, errno); goto post; } return req; post: tevent_req_post(req, ev); return req; } static void tdgram_bsd_sendto_handler(void *private_data) { struct tevent_req *req = talloc_get_type_abort(private_data, struct tevent_req); struct tdgram_bsd_sendto_state *state = tevent_req_data(req, struct tdgram_bsd_sendto_state); struct tdgram_context *dgram = state->dgram; struct tdgram_bsd *bsds = tdgram_context_data(dgram, struct tdgram_bsd); struct sockaddr *sa = NULL; socklen_t sa_len = 0; ssize_t ret; int err; bool retry; if (state->dst) { struct tsocket_address_bsd *bsda = talloc_get_type(state->dst->private_data, struct tsocket_address_bsd); sa = &bsda->u.sa; sa_len = sizeof(bsda->u.ss); /* * for unix sockets we can't use the size of sockaddr_storage * we would get EINVAL */ if (bsda->u.sa.sa_family == AF_UNIX) { sa_len = sizeof(bsda->u.un); } } ret = sendto(bsds->fd, state->buf, state->len, 0, sa, sa_len); err = tsocket_bsd_error_from_errno(ret, errno, &retry); if (retry) { /* retry later */ return; } if (tevent_req_error(req, err)) { return; } state->ret = ret; tevent_req_done(req); } static ssize_t tdgram_bsd_sendto_recv(struct tevent_req *req, int *perrno) { struct tdgram_bsd_sendto_state *state = tevent_req_data(req, struct tdgram_bsd_sendto_state); ssize_t ret; ret = tsocket_simple_int_recv(req, perrno); if (ret == 0) { ret = state->ret; } tevent_req_received(req); return ret; } struct tdgram_bsd_disconnect_state { uint8_t __dummy; }; static struct tevent_req *tdgram_bsd_disconnect_send(TALLOC_CTX *mem_ctx, struct tevent_context *ev, struct tdgram_context *dgram) { struct tdgram_bsd *bsds = tdgram_context_data(dgram, struct tdgram_bsd); struct tevent_req *req; struct tdgram_bsd_disconnect_state *state; int ret; int err; bool dummy; req = tevent_req_create(mem_ctx, &state, struct tdgram_bsd_disconnect_state); if (req == NULL) { return NULL; } if (bsds->fd == -1) { tevent_req_error(req, ENOTCONN); goto post; } ret = close(bsds->fd); bsds->fd = -1; err = tsocket_bsd_error_from_errno(ret, errno, &dummy); if (tevent_req_error(req, err)) { goto post; } tevent_req_done(req); post: tevent_req_post(req, ev); return req; } static int tdgram_bsd_disconnect_recv(struct tevent_req *req, int *perrno) { int ret; ret = tsocket_simple_int_recv(req, perrno); tevent_req_received(req); return ret; } static const struct tdgram_context_ops tdgram_bsd_ops = { .name = "bsd", .recvfrom_send = tdgram_bsd_recvfrom_send, .recvfrom_recv = tdgram_bsd_recvfrom_recv, .sendto_send = tdgram_bsd_sendto_send, .sendto_recv = tdgram_bsd_sendto_recv, .disconnect_send = tdgram_bsd_disconnect_send, .disconnect_recv = tdgram_bsd_disconnect_recv, }; static int tdgram_bsd_destructor(struct tdgram_bsd *bsds) { TALLOC_FREE(bsds->fde); if (bsds->fd != -1) { close(bsds->fd); bsds->fd = -1; } return 0; } static int tdgram_bsd_dgram_socket(const struct tsocket_address *local, const struct tsocket_address *remote, bool broadcast, TALLOC_CTX *mem_ctx, struct tdgram_context **_dgram, const char *location) { struct tsocket_address_bsd *lbsda = talloc_get_type_abort(local->private_data, struct tsocket_address_bsd); struct tsocket_address_bsd *rbsda = NULL; struct tdgram_context *dgram; struct tdgram_bsd *bsds; int fd; int ret; bool do_bind = false; bool do_reuseaddr = false; socklen_t sa_len = sizeof(lbsda->u.ss); if (remote) { rbsda = talloc_get_type_abort(remote->private_data, struct tsocket_address_bsd); } switch (lbsda->u.sa.sa_family) { case AF_UNIX: if (broadcast) { errno = EINVAL; return -1; } if (lbsda->u.un.sun_path[0] != 0) { do_reuseaddr = true; do_bind = true; } /* * for unix sockets we can't use the size of sockaddr_storage * we would get EINVAL */ sa_len = sizeof(lbsda->u.un); break; case AF_INET: if (lbsda->u.in.sin_port != 0) { do_reuseaddr = true; do_bind = true; } if (lbsda->u.in.sin_addr.s_addr == INADDR_ANY) { do_bind = true; } break; #ifdef HAVE_IPV6 case AF_INET6: if (lbsda->u.in6.sin6_port != 0) { do_reuseaddr = true; do_bind = true; } if (memcmp(&in6addr_any, &lbsda->u.in6.sin6_addr, sizeof(in6addr_any)) != 0) { do_bind = true; } break; #endif default: errno = EINVAL; return -1; } fd = socket(lbsda->u.sa.sa_family, SOCK_DGRAM, 0); if (fd < 0) { return fd; } fd = tsocket_bsd_common_prepare_fd(fd, true); if (fd < 0) { return fd; } dgram = tdgram_context_create(mem_ctx, &tdgram_bsd_ops, &bsds, struct tdgram_bsd, location); if (!dgram) { int saved_errno = errno; close(fd); errno = saved_errno; return -1; } ZERO_STRUCTP(bsds); bsds->fd = fd; talloc_set_destructor(bsds, tdgram_bsd_destructor); if (broadcast) { int val = 1; ret = setsockopt(fd, SOL_SOCKET, SO_BROADCAST, (const void *)&val, sizeof(val)); if (ret == -1) { int saved_errno = errno; talloc_free(dgram); errno = saved_errno; return ret; } } if (do_reuseaddr) { int val = 1; ret = setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const void *)&val, sizeof(val)); if (ret == -1) { int saved_errno = errno; talloc_free(dgram); errno = saved_errno; return ret; } } if (do_bind) { ret = bind(fd, &lbsda->u.sa, sa_len); if (ret == -1) { int saved_errno = errno; talloc_free(dgram); errno = saved_errno; return ret; } } if (rbsda) { ret = connect(fd, &rbsda->u.sa, sa_len); if (ret == -1) { int saved_errno = errno; talloc_free(dgram); errno = saved_errno; return ret; } } *_dgram = dgram; return 0; } int _tdgram_inet_udp_socket(const struct tsocket_address *local, const struct tsocket_address *remote, TALLOC_CTX *mem_ctx, struct tdgram_context **dgram, const char *location) { struct tsocket_address_bsd *lbsda = talloc_get_type_abort(local->private_data, struct tsocket_address_bsd); int ret; switch (lbsda->u.sa.sa_family) { case AF_INET: break; #ifdef HAVE_IPV6 case AF_INET6: break; #endif default: errno = EINVAL; return -1; } ret = tdgram_bsd_dgram_socket(local, remote, false, mem_ctx, dgram, location); return ret; } int _tdgram_unix_dgram_socket(const struct tsocket_address *local, const struct tsocket_address *remote, TALLOC_CTX *mem_ctx, struct tdgram_context **dgram, const char *location) { struct tsocket_address_bsd *lbsda = talloc_get_type_abort(local->private_data, struct tsocket_address_bsd); int ret; switch (lbsda->u.sa.sa_family) { case AF_UNIX: break; default: errno = EINVAL; return -1; } ret = tdgram_bsd_dgram_socket(local, remote, false, mem_ctx, dgram, location); return ret; }