lance.lmw...@gmail.com (12021-01-12): > From: Limin Wang <lance.lmw...@gmail.com> > > Signed-off-by: Limin Wang <lance.lmw...@gmail.com> > --- > libavformat/udp.c | 58 > ++++++++++++++++++++++++++++++++++--------------------- > 1 file changed, 36 insertions(+), 22 deletions(-) > > diff --git a/libavformat/udp.c b/libavformat/udp.c > index 13c346a..42e4563 100644 > --- a/libavformat/udp.c > +++ b/libavformat/udp.c > @@ -165,7 +165,7 @@ static int udp_set_multicast_ttl(int sockfd, int mcastTTL, > if (addr->sa_family == AF_INET) { > if (setsockopt(sockfd, IPPROTO_IP, IP_MULTICAST_TTL, &mcastTTL, > sizeof(mcastTTL)) < 0) { > ff_log_net_error(NULL, AV_LOG_ERROR, > "setsockopt(IP_MULTICAST_TTL)"); > - return -1; > + return ff_neterrno(); > } > } > #endif > @@ -173,7 +173,7 @@ static int udp_set_multicast_ttl(int sockfd, int mcastTTL, > if (addr->sa_family == AF_INET6) { > if (setsockopt(sockfd, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, &mcastTTL, > sizeof(mcastTTL)) < 0) { > ff_log_net_error(NULL, AV_LOG_ERROR, > "setsockopt(IPV6_MULTICAST_HOPS)"); > - return -1; > + return ff_neterrno(); > } > } > #endif > @@ -193,7 +193,7 @@ static int udp_join_multicast_group(int sockfd, struct > sockaddr *addr,struct soc > mreq.imr_interface.s_addr = INADDR_ANY; > if (setsockopt(sockfd, IPPROTO_IP, IP_ADD_MEMBERSHIP, (const void > *)&mreq, sizeof(mreq)) < 0) { > ff_log_net_error(NULL, AV_LOG_ERROR, > "setsockopt(IP_ADD_MEMBERSHIP)"); > - return -1; > + return ff_neterrno(); > } > } > #endif > @@ -206,7 +206,7 @@ static int udp_join_multicast_group(int sockfd, struct > sockaddr *addr,struct soc > mreq6.ipv6mr_interface = 0; > if (setsockopt(sockfd, IPPROTO_IPV6, IPV6_ADD_MEMBERSHIP, &mreq6, > sizeof(mreq6)) < 0) { > ff_log_net_error(NULL, AV_LOG_ERROR, > "setsockopt(IPV6_ADD_MEMBERSHIP)"); > - return -1; > + return ff_neterrno(); > } > } > #endif > @@ -633,6 +633,7 @@ static int udp_open(URLContext *h, const char *uri, int > flags) > char buf[256]; > struct sockaddr_storage my_addr; > socklen_t len;
> + int ret = AVERROR(EIO); ret should be left uninited, so that the compiler can warn you if there is a code path where you return it without setting it. > > h->is_streamed = 1; > > @@ -641,12 +642,12 @@ static int udp_open(URLContext *h, const char *uri, int > flags) > s->buffer_size = is_output ? UDP_TX_BUF_SIZE : UDP_RX_BUF_SIZE; > > if (s->sources) { > - if (ff_ip_parse_sources(h, s->sources, &s->filters) < 0) > + if ((ret = ff_ip_parse_sources(h, s->sources, &s->filters)) < 0) > goto fail; > } > > if (s->block) { > - if (ff_ip_parse_blocks(h, s->block, &s->filters) < 0) > + if ((ret = ff_ip_parse_blocks(h, s->block, &s->filters)) < 0) > goto fail; > } > > @@ -712,11 +713,11 @@ static int udp_open(URLContext *h, const char *uri, int > flags) > av_strlcpy(localaddr, buf, sizeof(localaddr)); > } > if (av_find_info_tag(buf, sizeof(buf), "sources", p)) { > - if (ff_ip_parse_sources(h, buf, &s->filters) < 0) > + if ((ret = ff_ip_parse_sources(h, buf, &s->filters)) < 0) > goto fail; > } > if (av_find_info_tag(buf, sizeof(buf), "block", p)) { > - if (ff_ip_parse_blocks(h, buf, &s->filters) < 0) > + if ((ret = ff_ip_parse_blocks(h, buf, &s->filters)) < 0) > goto fail; > } > if (!is_output && av_find_info_tag(buf, sizeof(buf), "timeout", p)) > @@ -742,7 +743,7 @@ static int udp_open(URLContext *h, const char *uri, int > flags) > if (!(flags & AVIO_FLAG_READ)) > goto fail; > } else { > - if (ff_udp_set_remote_url(h, uri) < 0) > + if ((ret = ff_udp_set_remote_url(h, uri)) < 0) > goto fail; > } > > @@ -763,15 +764,22 @@ static int udp_open(URLContext *h, const char *uri, int > flags) > */ > if (s->reuse_socket > 0 || (s->is_multicast && s->reuse_socket < 0)) { > s->reuse_socket = 1; > - if (setsockopt (udp_fd, SOL_SOCKET, SO_REUSEADDR, > &(s->reuse_socket), sizeof(s->reuse_socket)) != 0) > + if (setsockopt (udp_fd, SOL_SOCKET, SO_REUSEADDR, > &(s->reuse_socket), sizeof(s->reuse_socket)) != 0) { > + ret = ff_neterrno(); > goto fail; > + } > } > > if (s->is_broadcast) { > #ifdef SO_BROADCAST > - if (setsockopt (udp_fd, SOL_SOCKET, SO_BROADCAST, > &(s->is_broadcast), sizeof(s->is_broadcast)) != 0) > + if (setsockopt (udp_fd, SOL_SOCKET, SO_BROADCAST, > &(s->is_broadcast), sizeof(s->is_broadcast)) != 0) { > + ret = ff_neterrno(); > + goto fail; > + } > +#else > + ret = AVERROR(EINVAL); ENOSYS > + goto fail; > #endif > - goto fail; > } > > /* Set the checksum coverage for UDP-Lite (RFC 3828) for sending and > receiving. > @@ -788,8 +796,10 @@ static int udp_open(URLContext *h, const char *uri, int > flags) > > if (dscp >= 0) { > dscp <<= 2; > - if (setsockopt (udp_fd, IPPROTO_IP, IP_TOS, &dscp, sizeof(dscp)) != > 0) > + if (setsockopt (udp_fd, IPPROTO_IP, IP_TOS, &dscp, sizeof(dscp)) != > 0) { > + ret = ff_neterrno(); > goto fail; > + } > } > > /* If multicast, try binding the multicast address first, to avoid > @@ -804,6 +814,7 @@ static int udp_open(URLContext *h, const char *uri, int > flags) > /* the bind is needed to give a port to the socket now */ > if (bind_ret < 0 && bind(udp_fd,(struct sockaddr *)&my_addr, len) < 0) { > ff_log_net_error(h, AV_LOG_ERROR, "bind failed"); > + ret = ff_neterrno(); > goto fail; > } > > @@ -814,28 +825,28 @@ static int udp_open(URLContext *h, const char *uri, int > flags) > if (s->is_multicast) { > if (h->flags & AVIO_FLAG_WRITE) { > /* output */ > - if (udp_set_multicast_ttl(udp_fd, s->ttl, (struct sockaddr > *)&s->dest_addr) < 0) > + if ((ret = udp_set_multicast_ttl(udp_fd, s->ttl, (struct > sockaddr *)&s->dest_addr)) < 0) > goto fail; > } > if (h->flags & AVIO_FLAG_READ) { > /* input */ > if (s->filters.nb_include_addrs) { > - if (udp_set_multicast_sources(h, udp_fd, > + if ((ret = udp_set_multicast_sources(h, udp_fd, > (struct sockaddr > *)&s->dest_addr, > s->dest_addr_len, > &s->local_addr_storage, > s->filters.include_addrs, > - s->filters.nb_include_addrs, > 1) < 0) > + s->filters.nb_include_addrs, > 1)) < 0) > goto fail; > } else { > - if (udp_join_multicast_group(udp_fd, (struct sockaddr > *)&s->dest_addr,(struct sockaddr *)&s->local_addr_storage) < 0) > + if ((ret = udp_join_multicast_group(udp_fd, (struct sockaddr > *)&s->dest_addr,(struct sockaddr *)&s->local_addr_storage)) < 0) > goto fail; > } > if (s->filters.nb_exclude_addrs) { > - if (udp_set_multicast_sources(h, udp_fd, > + if ((ret = udp_set_multicast_sources(h, udp_fd, > (struct sockaddr > *)&s->dest_addr, > s->dest_addr_len, > &s->local_addr_storage, > s->filters.exclude_addrs, > - s->filters.nb_exclude_addrs, > 0) < 0) > + s->filters.nb_exclude_addrs, > 0)) < 0) > goto fail; > } > } > @@ -846,6 +857,7 @@ static int udp_open(URLContext *h, const char *uri, int > flags) > tmp = s->buffer_size; > if (setsockopt(udp_fd, SOL_SOCKET, SO_SNDBUF, &tmp, sizeof(tmp)) < > 0) { > ff_log_net_error(h, AV_LOG_ERROR, "setsockopt(SO_SNDBUF)"); > + ret = ff_neterrno(); > goto fail; > } > } else { > @@ -869,6 +881,7 @@ static int udp_open(URLContext *h, const char *uri, int > flags) > if (s->is_connected) { > if (connect(udp_fd, (struct sockaddr *) &s->dest_addr, > s->dest_addr_len)) { > ff_log_net_error(h, AV_LOG_ERROR, "connect"); > + ret = ff_neterrno(); > goto fail; > } > } > @@ -888,23 +901,24 @@ static int udp_open(URLContext *h, const char *uri, int > flags) > } > > if ((!is_output && s->circular_buffer_size) || (is_output && s->bitrate > && s->circular_buffer_size)) { > - int ret; > - > /* start the task going */ > s->fifo = av_fifo_alloc(s->circular_buffer_size); > ret = pthread_mutex_init(&s->mutex, NULL); > if (ret != 0) { > av_log(h, AV_LOG_ERROR, "pthread_mutex_init failed : %s\n", > strerror(ret)); > + ret = AVERROR(ret); > goto fail; > } > ret = pthread_cond_init(&s->cond, NULL); > if (ret != 0) { > av_log(h, AV_LOG_ERROR, "pthread_cond_init failed : %s\n", > strerror(ret)); > + ret = AVERROR(ret); > goto cond_fail; > } > ret = pthread_create(&s->circular_buffer_thread, NULL, > is_output?circular_buffer_task_tx:circular_buffer_task_rx, h); > if (ret != 0) { > av_log(h, AV_LOG_ERROR, "pthread_create failed : %s\n", > strerror(ret)); > + ret = AVERROR(ret); > goto thread_fail; > } > s->thread_started = 1; > @@ -923,7 +937,7 @@ static int udp_open(URLContext *h, const char *uri, int > flags) > closesocket(udp_fd); > av_fifo_freep(&s->fifo); > ff_ip_reset_filters(&s->filters); > - return AVERROR(EIO); > + return ret; > } > > static int udplite_open(URLContext *h, const char *uri, int flags) Thanks for your efforts. Regards, -- Nicolas George
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