On Wed, 13 Jan 2021, lance.lmw...@gmail.com wrote:

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(-)

LGTM, thanks.

Marton


diff --git a/libavformat/udp.c b/libavformat/udp.c
index 13c346a..c4e403b 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;

    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(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)
--
1.8.3.1

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