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Re: [Qemu-devel] [PATCH v3 1/7] hmp: Add flag for preconfig commands
From: |
Dr. David Alan Gilbert |
Subject: |
Re: [Qemu-devel] [PATCH v3 1/7] hmp: Add flag for preconfig commands |
Date: |
Mon, 11 Jun 2018 18:37:15 +0100 |
User-agent: |
Mutt/1.10.0 (2018-05-17) |
* Markus Armbruster (address@hidden) wrote:
> "Dr. David Alan Gilbert (git)" <address@hidden> writes:
>
> > From: "Dr. David Alan Gilbert" <address@hidden>
> >
> > Add a flag to command definitions to allow them to be used in preconfig
> > and check it.
> > If users try to use commands that aren't available, tell them to use
> > the exit_preconfig comand we're adding in a few patches.
> >
> > Signed-off-by: Dr. David Alan Gilbert <address@hidden>
> > ---
> > monitor.c | 20 ++++++++++++++++++++
> > 1 file changed, 20 insertions(+)
> >
> > diff --git a/monitor.c b/monitor.c
> > index 6d0cec552e..f4a16e6a03 100644
> > --- a/monitor.c
> > +++ b/monitor.c
> > @@ -128,6 +128,7 @@ typedef struct mon_cmd_t {
> > const char *args_type;
> > const char *params;
> > const char *help;
> > + const char *flags; /* p=preconfig */
>
> I'd add a bool for each flag instead of encoding them in a string. No
> need for a comment then (yours is cryptic). But your artistic license
> applies.
It's a lot smaller change using the string, so simplicity won.
> > void (*cmd)(Monitor *mon, const QDict *qdict);
> > /* @sub_table is a list of 2nd level of commands. If it does not exist,
> > * cmd should be used. If it exists, sub_table[?].cmd should be
> > @@ -936,6 +937,19 @@ static int parse_cmdline(const char *cmdline,
> > return -1;
> > }
> >
> > +/*
> > + * Returns true if the command can be executed in preconfig mode
> > + * i.e. it has the 'p' flag.
> > + */
> > +static bool cmd_can_preconfig(const mon_cmd_t *cmd)
> > +{
> > + if (!cmd->flags) {
> > + return false;
> > + }
> > +
> > + return strchr(cmd->flags, 'p');
> > +}
> > +
> > static void help_cmd_dump_one(Monitor *mon,
> > const mon_cmd_t *cmd,
> > char **prefix_args,
> > @@ -2976,6 +2990,12 @@ static const mon_cmd_t
> > *monitor_parse_command(Monitor *mon,
> > (int)(p - cmdp_start), cmdp_start);
> > return NULL;
> > }
> > + if (runstate_check(RUN_STATE_PRECONFIG) && !cmd_can_preconfig(cmd)) {
> > + monitor_printf(mon, "Command '%.*s' not available with -preconfig;
> > "
> > + "use exit_preconfig after configuration.\n",
> > + (int)(p - cmdp_start), cmdp_start);
> > + return NULL;
> > + }
> >
> > /* filter out following useless space */
> > while (qemu_isspace(*p)) {
>
> Suggest "not available with -preconfig until after exit_preconfig".
Done.
> Regardless,
> Reviewed-by: Markus Armbruster <address@hidden>
Thanks.
Dave
--
Dr. David Alan Gilbert / address@hidden / Manchester, UK
- [Qemu-devel] [PATCH v3 5/7] hmp: Add info commands for preconfig, (continued)
[Qemu-devel] [PATCH v3 1/7] hmp: Add flag for preconfig commands, Dr. David Alan Gilbert (git), 2018/06/08
[Qemu-devel] [PATCH v3 4/7] qmp: enable query-[chardev|version|name|uuid|iothreads|memdev] commands in preconfig state, Dr. David Alan Gilbert (git), 2018/06/08
[Qemu-devel] [PATCH v3 6/7] hmp: add exit_preconfig, Dr. David Alan Gilbert (git), 2018/06/08
[Qemu-devel] [PATCH v3 2/7] hmp: Allow help on preconfig commands, Dr. David Alan Gilbert (git), 2018/06/08