[Qemu-devel] [PATCH 1/3] io: Implement QIO_CHANNEL_ERR_BROKEN

[Sergio Lopez <slp@redhat.com>]

QIO_CHANNEL_ERR_BROKEN is used to identify a potentially unrecoverable
error in the channel, like EPIPE.
---
 include/io/channel.h | 1 +
 io/channel-file.c    | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/include/io/channel.h b/include/io/channel.h
index e8cdadb..bbe45f6 100644
--- a/include/io/channel.h
+++ b/include/io/channel.h
@@ -38,6 +38,7 @@ typedef struct QIOChannel QIOChannel;
 typedef struct QIOChannelClass QIOChannelClass;
 
 #define QIO_CHANNEL_ERR_BLOCK -2
+#define QIO_CHANNEL_ERR_BROKEN -3
 
 typedef enum QIOChannelFeature QIOChannelFeature;
 
diff --git a/io/channel-file.c b/io/channel-file.c
index db948ab..a990f67 100644
--- a/io/channel-file.c
+++ b/io/channel-file.c
@@ -124,6 +124,9 @@ static ssize_t qio_channel_file_writev(QIOChannel *ioc,
         if (errno == EAGAIN) {
             return QIO_CHANNEL_ERR_BLOCK;
         }
+        if (errno == EPIPE) {
+            return QIO_CHANNEL_ERR_BROKEN;
+        }
         if (errno == EINTR) {
             goto retry;
         }
-- 
1.8.3.1