[PATCH spice-streaming-agent v2 4/4] better error message when opening streaming device

[Lukáš Hrázký <lhrazky@xxxxxxxxxx>]

Signed-off-by: Lukáš Hrázký <lhrazky@xxxxxxxxxx>
---
 src/spice-streaming-agent.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/spice-streaming-agent.cpp b/src/spice-streaming-agent.cpp
index 87e8fa3..0200e4a 100644
--- a/src/spice-streaming-agent.cpp
+++ b/src/spice-streaming-agent.cpp
@@ -356,7 +356,8 @@ do_capture(const string &streamport, FILE *f_log)
     streamfd = open(streamport.c_str(), O_RDWR);
     if (streamfd < 0)
         // TODO was syslog(LOG_ERR, "Failed to open %s: %s\n", streamport, strerror(errno));
-        throw std::runtime_error("failed to open streaming device");
+        throw std::runtime_error("failed to open the streaming device (" +
+            streamport + "): " + string(strerror(errno)));
 
     unsigned int frame_count = 0;
     while (! quit) {
-- 
2.15.1

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