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From: Thomas Monjalon <thomas@monjalon.net>
To: Stephen Hemminger <stephen@networkplumber.org>
Cc: dev@dpdk.org, Stephen Hemminger <sthemmin@microsoft.com>,
	david.marchand@redhat.com
Subject: Re: [PATCH] eal: remove unnecessary argv[0] handling
Date: Wed, 09 Feb 2022 19:51:15 +0100	[thread overview]
Message-ID: <37375521.10thIPus4b@thomas> (raw)
In-Reply-To: <20220209074519.6b3f3f5e@hermes.local>

09/02/2022 16:45, Stephen Hemminger:
> On Wed, 09 Feb 2022 15:58:26 +0100
> Thomas Monjalon <thomas@monjalon.net> wrote:
> 
> > 02/02/2022 20:47, Stephen Hemminger:
> > > The rte_eal_init function looks at argv[0] to determine
> > > the program name to pass to the log init function.
> > > This is both unnecessary and in a corner case a problem.
> > > 
> > > Parsing argv[0] is unnecessary because the function openlog()
> > > already determines the log identifier from program name if
> > > NULL is passed, see openlog man page:
> > >     The string pointed to by ident is prepended to every message, and is
> > >     typically set to the program name. If ident is NULL, the program name
> > >     is used.  (POSIX.1-2008 does not specify the behavior when ident is
> > >     NULL.)  
> > 
> > What about POSIX warning?
> > Did you test it? Which libc? What about musl?
> 
> Source for musl shows that openlog accepts NULL as ident.
> It then generates log messages with ident in the message.

In this case, it will be empty string.
It seems this solution does not work with musl.



  reply	other threads:[~2022-02-09 18:51 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-02 19:47 Stephen Hemminger
2022-02-09 14:58 ` Thomas Monjalon
2022-02-09 15:36   ` Stephen Hemminger
2022-02-09 15:45   ` Stephen Hemminger
2022-02-09 18:51     ` Thomas Monjalon [this message]
2022-02-09 19:29       ` Stephen Hemminger
2022-02-10  7:57         ` Thomas Monjalon
2022-02-09 15:54 ` [PATCH v2] Subject: " Stephen Hemminger
2022-02-09 20:41 ` [PATCH v3] eal: simplify " Stephen Hemminger

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