linux-kernel - Re: [PATCH 05/24] perf daemon: Add client socket support

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Date:   Thu, 4 Feb 2021 15:50:22 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Jiri Olsa <jolsa@...nel.org>, lkml <linux-kernel@...r.kernel.org>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Ingo Molnar <mingo@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Namhyung Kim <namhyung@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Michael Petlan <mpetlan@...hat.com>,
        Ian Rogers <irogers@...gle.com>,
        Stephane Eranian <eranian@...gle.com>,
        Alexei Budankov <abudankov@...wei.com>
Subject: Re: [PATCH 05/24] perf daemon: Add client socket support

On Wed, Feb 03, 2021 at 06:05:47PM -0300, Arnaldo Carvalho de Melo wrote:

SNIP

> 
> close fd
> 
> > +		return -1;
> > +	}
> > +
> > +	return fd;
> > +}
> > +
> >  static void daemon__free(struct daemon *daemon)
> >  {
> >  	free(daemon->config_real);
> > @@ -211,6 +282,40 @@ static int __cmd_start(struct daemon *daemon, struct option parent_options[],
> >  	return err;
> >  }
> >  
> > +__maybe_unused
> > +static int send_cmd(struct daemon *daemon, union cmd *cmd)
> > +{
> > +	char *line = NULL;
> > +	size_t len = 0;
> > +	ssize_t nread;
> > +	FILE *in;
> > +	int fd;
> > +
> > +	if (setup_client_config(daemon))
> > +		return -1;
> > +
> > +	fd = setup_client_socket(daemon);
> > +	if (fd < 0)
> > +		return -1;
> > +
> > +	if (sizeof(*cmd) != write(fd, cmd, sizeof(*cmd)))
> 
> close fd
> 
> > +		return -1;
> > +
> > +	in = fdopen(fd, "r");
> > +	if (!in) {
> > +		perror("failed: fdopen");
> 
> close fd

ah right, thanks

jirka

> 
> > +		return -1;
> > +	}
> > +
> > +	while ((nread = getline(&line, &len, in)) != -1) {
> > +		fwrite(line, nread, 1, stdout);
> > +		fflush(stdout);
> > +	}
> > +
> > +	fclose(in);
> > +	return 0;
> > +}
> > +
> >  int cmd_daemon(int argc, const char **argv)
> >  {
> >  	struct option daemon_options[] = {
> > -- 
> > 2.29.2
> > 
> 
> -- 
> 
> - Arnaldo
>