Improve error messages.

enlyze · May 25, 2021 · 8bec978 · 8bec978
1 parent c9819ad
commit 8bec978
Showing 1 changed file with 12 additions and 2 deletions.
diff --git a/src/tool/monitoring.c b/src/tool/monitoring.c
@@ -138,7 +138,16 @@ HandleMonitorParameter(
  &cbReturned,
  NULL))
  {
- fprintf(stderr, "DeviceIoControl failed for PORTSNIFFER_IOCTL_CONTROL_RESET_PORT_MONITORING, last error is %lu.\n", GetLastError());
+ if (GetLastError() == ERROR_FILE_NOT_FOUND)
+ {
+ fprintf(stderr, "The PortSniffer Driver is not attached to %S!\n", pwszPort);
+ fprintf(stderr, "Please run this tool using the /attach option.\n");
+ }
+ else
+ {
+ fprintf(stderr, "DeviceIoControl failed for PORTSNIFFER_IOCTL_CONTROL_RESET_PORT_MONITORING, last error is %lu.\n", GetLastError());
+ }
+
  goto Cleanup;
  }
 
@@ -170,8 +179,9 @@ HandleMonitorParameter(
  }
  else if (GetLastError() == ERROR_FILE_NOT_FOUND)
  {
- fprintf(stderr, "The PortSniffer Driver is not attached to %S!\n", pwszPort);
+ fprintf(stderr, "The PortSniffer Driver is no longer attached to %S!\n", pwszPort);
  fprintf(stderr, "Please run this tool using the /attach option.\n");
+ goto Cleanup;
  }
  else
  {