diff options
| author | Marc-André Lureau <marcandre.lureau@redhat.com> | 2019-03-08 15:04:47 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2019-03-12 21:22:31 -0400 |
| commit | 917d7dd72a774d1f82700a284adb4ea632692638 (patch) | |
| tree | 6d83adf7a99ec23e9d9587cfee857dff4b07031e /hw | |
| parent | 6079865526474dea7d8680ed2cf0b6d15ac6e99f (diff) | |
| download | qemu-917d7dd72a774d1f82700a284adb4ea632692638.zip qemu-917d7dd72a774d1f82700a284adb4ea632692638.tar.gz qemu-917d7dd72a774d1f82700a284adb4ea632692638.tar.bz2 | |
vhost-user: wrap some read/write with retry handling
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20190308140454.32437-6-marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/virtio/vhost-user.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c index 0164060..3b09c40 100644 --- a/hw/virtio/vhost-user.c +++ b/hw/virtio/vhost-user.c @@ -968,7 +968,10 @@ static void slave_read(void *opaque) iov.iov_base = &hdr; iov.iov_len = VHOST_USER_HDR_SIZE; - size = recvmsg(u->slave_fd, &msgh, 0); + do { + size = recvmsg(u->slave_fd, &msgh, 0); + } while (size < 0 && (errno == EINTR || errno == EAGAIN)); + if (size != VHOST_USER_HDR_SIZE) { error_report("Failed to read from slave."); goto err; @@ -997,7 +1000,10 @@ static void slave_read(void *opaque) } /* Read payload */ - size = read(u->slave_fd, &payload, hdr.size); + do { + size = read(u->slave_fd, &payload, hdr.size); + } while (size < 0 && (errno == EINTR || errno == EAGAIN)); + if (size != hdr.size) { error_report("Failed to read payload from slave."); goto err; @@ -1045,7 +1051,10 @@ static void slave_read(void *opaque) iovec[1].iov_base = &payload; iovec[1].iov_len = hdr.size; - size = writev(u->slave_fd, iovec, ARRAY_SIZE(iovec)); + do { + size = writev(u->slave_fd, iovec, ARRAY_SIZE(iovec)); + } while (size < 0 && (errno == EINTR || errno == EAGAIN)); + if (size != VHOST_USER_HDR_SIZE + hdr.size) { error_report("Failed to send msg reply to slave."); goto err; |