lavd/v4l2enc: check write return value.

1 files changed, 2 insertions, 1 deletions

diff --git a/libavdevice/v4l2enc.c b/libavdevice/v4l2enc.c
index c766dd4b4c..21f0ef6983 100644
--- a/libavdevice/v4l2enc.c
+++ b/libavdevice/v4l2enc.c
@@ -85,7 +85,8 @@ static av_cold int write_header(AVFormatContext *s1)
 static int write_packet(AVFormatContext *s1, AVPacket *pkt)
 {
     const V4L2Context *s = s1->priv_data;
-    write(s->fd, pkt->data, pkt->size);
+    if (write(s->fd, pkt->data, pkt->size) == -1)
+        return AVERROR(errno);
     return 0;
 }