[Qemu-devel] [PATCH v2 2/2] monitor: suggest running "help" for command errors

[Bandan Das]

When a command fails due to incorrect syntax or input,
suggest using the "help" command to get more information
about the command. This is only applicable for HMP.

Before:
(qemu) drive_add usb_flash_drive
drive_add: string expected
After:
(qemu) drive_add usb_flash_drive
drive_add: string expected
Try "help drive_add" for more information

Signed-off-by: Bandan Das <address@hidden>
---
 monitor.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/monitor.c b/monitor.c
index f0c1a8c..af73195 100644
--- a/monitor.c
+++ b/monitor.c
@@ -4138,6 +4138,8 @@ static void handle_user_command(Monitor *mon, const char 
*cmdline)
 
     qdict = monitor_parse_arguments(mon, cmdline, &start, cmd);
     if (!qdict) {
+        monitor_printf(mon, "Try \"help %s\" for more information\n",
+                       cmd->name);
         return;
     }
 
-- 
2.1.0