[Spice-devel] [PATCH spice-server 05/16] red-stream: Avoid infinite loop on sasl_encode/decode failure

[Frediano Ziglio]

These functions do not set errno so is possible that errno is EAGAIN.
This would cause an infinite loop in functions like
red_stream_write_all (or potentially using the event loop).

Signed-off-by: Frediano Ziglio <fziglio at redhat.com>
---
 server/red-stream.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/server/red-stream.c b/server/red-stream.c
index 9e91a3da6..b5eb7cd31 100644
--- a/server/red-stream.c
+++ b/server/red-stream.c
@@ -596,6 +596,7 @@ static ssize_t red_stream_sasl_write(RedStream *s, const void *buf, size_t nbyte
                           &s->priv->sasl.encodedLength);
         if (err != SASL_OK) {
             spice_warning("sasl_encode error: %d", err);
+            errno = EIO;
             return -1;
         }
 
@@ -657,6 +658,7 @@ static ssize_t red_stream_sasl_read(RedStream *s, uint8_t *buf, size_t nbyte)
                       &decoded, &decodedlen);
     if (err != SASL_OK) {
         spice_warning("sasl_decode error: %d", err);
+        errno = EIO;
         return -1;
     }
 
-- 
2.14.3