Date: Thu, 6 Jan 2011 13:14:13 -0800 From: Garrett Cooper <gcooper@FreeBSD.org> To: Alexander Best <arundel@freebsd.org> Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org, Konstantin Belousov <kib@freebsd.org> Subject: Re: svn commit: r216955 - head/usr.sbin/rtprio Message-ID: <AANLkTimt7c6zbhUv94H=b8LEEXGGQEQaZPGrdmUXY8T4@mail.gmail.com> In-Reply-To: <20110106211017.GA46874@freebsd.org> References: <201101041413.p04EDA4f038360@svn.freebsd.org> <20110106204157.GA41314@freebsd.org> <AANLkTimDTq-JXF4gm9KUfo5eJaEXKaRF-CYiycFwdZML@mail.gmail.com> <20110106211017.GA46874@freebsd.org>
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On Thu, Jan 6, 2011 at 1:10 PM, Alexander Best <arundel@freebsd.org> wrote:
> On Thu Jan =A06 11, Garrett Cooper wrote:
>> On Thu, Jan 6, 2011 at 12:41 PM, Alexander Best <arundel@freebsd.org> wr=
ote:
>>
>> ...
>>
>> > this causes problems when pid is -0:
>> >
>> > [id|rt]prio -t -0 and [id|rt]prio 10 -0 will try to run "0" via execvp=
().
>> > beforehand however this will also trigger rtprio().
>> >
>> > a better solution would be to do:
>> >
>> > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0if (argv[2][0] =3D=3D '-') {
>> > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0proc =3D parseint(argv[=
2] + 1, "pid");
>> > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0if (rtprio(RTP_SET, pro=
c, &rtp) !=3D 0)
>> > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0err(1, =
"RTP_SET");
>> > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0} else {
>> > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0execvp(argv[2], &argv[2=
]);
>> > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0err(1, =
"%s", argv[2]);
>> > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0}
>>
>> How did you get a pid of -0?
>
> pid 0 stands for the current process. see rptio(2).
Man, that's awesome syntax >.<.
-Garrett
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