[Libguestfs] [PATCH 33/67] Print an error message if valgrind failure is detected in the daemon.

[Richard W.M. Jones]

From: "Richard W.M. Jones" <rjones at redhat.com>

This updates commit 55e3b8711f340a2f8bdb8ee8ff99deb40b4e9108.

(cherry picked from commit e7b06f7cf84d0a87d0c80d56b06e7e0017e55adc)
---
 src/conn-socket.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/conn-socket.c b/src/conn-socket.c
index e37ac23..1ad92cf 100644
--- a/src/conn-socket.c
+++ b/src/conn-socket.c
@@ -330,8 +330,14 @@ handle_log_message (guestfs_h *g,
   if (g->verbose) {
     const char *valgrind_canary = "DAEMON VALGRIND FAILED";
 
-    if (memmem (buf, n, valgrind_canary, strlen (valgrind_canary)) != NULL)
+    if (memmem (buf, n, valgrind_canary, strlen (valgrind_canary)) != NULL) {
+      fprintf (stderr,
+               "Detected valgrind failure in the daemon!  Exiting with exit code 119.\n"
+               "See log messages printed above.\n"
+               "Note: This happens because libguestfs was configured with\n"
+               "'--enable-valgrind-daemon' which should not be used in production builds.\n");
       exit (119);
+    }
   }
 #endif
 
-- 
1.8.3.1