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From: David Gibson <david@gibson.dropbear.id.au>
To: Stefano Brivio <sbrivio@redhat.com>
Cc: passt-dev@passt.top, Yalan Zhang <yalzhang@redhat.com>
Subject: Re: [PATCH v3 1/8] conf, passt: Don't try to log to stderr after we close it
Date: Thu, 20 Jun 2024 10:27:53 +1000	[thread overview]
Message-ID: <ZnN3idgjZwXE9b8R@zatzit> (raw)
In-Reply-To: <20240619194028.2913930-2-sbrivio@redhat.com>

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On Wed, Jun 19, 2024 at 09:40:21PM +0200, Stefano Brivio wrote:
> If we don't run in foreground, we close standard error as we
> daemonise, so it makes no sense to check if the controlling terminal
> is an interactive terminal or if --force-stderr was given, to decide
> if we want to log to standard error.
> 
> Make --force-stderr depend on --foreground.
> 
> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>

Reviewed-by: David Gibson <david@gibson.dropbear.id.au>

> ---
>  conf.c  | 3 +++
>  passt.c | 2 +-
>  2 files changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/conf.c b/conf.c
> index 94b3ed6..dbdbb62 100644
> --- a/conf.c
> +++ b/conf.c
> @@ -1693,6 +1693,9 @@ void conf(struct ctx *c, int argc, char **argv)
>  
>  	conf_ugid(runas, &uid, &gid);
>  
> +	if (!c->foreground && c->force_stderr)
> +		die("Can't log to standard error if not running in foreground");
> +
>  	if (logfile) {
>  		logfile_init(c->mode == MODE_PASTA ? "pasta" : "passt",
>  			     logfile, logsize);
> diff --git a/passt.c b/passt.c
> index a5e2c5a..aa9648a 100644
> --- a/passt.c
> +++ b/passt.c
> @@ -302,7 +302,7 @@ int main(int argc, char **argv)
>  	if (isolate_prefork(&c))
>  		die("Failed to sandbox process, exiting");
>  
> -	if (!c.force_stderr && !isatty(fileno(stderr)))
> +	if (!c.foreground || (!c.force_stderr && !isatty(fileno(stderr))))
>  		__openlog(log_name, 0, LOG_DAEMON);
>  
>  	if (!c.foreground)

-- 
David Gibson (he or they)	| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you, not the other way
				| around.
http://www.ozlabs.org/~dgibson

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  reply	other threads:[~2024-06-20  0:49 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-06-19 19:40 [PATCH v3 0/8] Fixes for early logging/prints and related cleanups Stefano Brivio
2024-06-19 19:40 ` [PATCH v3 1/8] conf, passt: Don't try to log to stderr after we close it Stefano Brivio
2024-06-20  0:27   ` David Gibson [this message]
2024-06-19 19:40 ` [PATCH v3 2/8] conf, passt: Make --stderr do nothing, and deprecate it Stefano Brivio
2024-06-20  0:31   ` David Gibson
2024-06-19 19:40 ` [PATCH v3 3/8] conf, log: Instead of abusing log levels, add log_conf_parsed flag Stefano Brivio
2024-06-20  0:33   ` David Gibson
2024-06-19 19:40 ` [PATCH v3 4/8] log, passt: Always print to stderr before initialisation is complete Stefano Brivio
2024-06-20  0:44   ` David Gibson
2024-06-19 19:40 ` [PATCH v3 5/8] log: Add _perror() logging function variants Stefano Brivio
2024-06-20  0:45   ` David Gibson
2024-06-19 19:40 ` [PATCH v3 6/8] treewide: Replace perror() calls with calls to logging functions Stefano Brivio
2024-06-20  0:47   ` David Gibson
2024-06-19 19:40 ` [PATCH v3 7/8] treewide: Replace strerror() calls Stefano Brivio
2024-06-20  0:48   ` David Gibson
2024-06-19 19:40 ` [PATCH v3 8/8] conf, passt: Don't call __openlog() if a log file is used Stefano Brivio
2024-06-20  0:49   ` David Gibson

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