From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <5acaebb4de367f34d9d5c152e0e80c16@plan9.bell-labs.com>
Date: Thu, 29 Jul 2010 14:12:06 +0200
From: Sape Mullender <sape@plan9.bell-labs.com>
To: 9fans@9fans.net
CC: 9fans@9fans.net
In-Reply-To: <0522651bfa90c83ddb192a77ddaccb78@swcp.com>
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Subject: Re: [9fans] writing to ctl using fprint and write
Topicbox-Message-UUID: 44ac52f6-ead6-11e9-9d60-3106f5b1d025

> I'm working on some regression testing for my GSoC project and am trying
> to understand why
>
>  ctl = open(path("ctl"),ORDWR|OAPPEND);
>  ts = "chatty9p 1"; // or some other message
>
>  n = fprint(ctl, ts);
>
> succeeds, while
>
>  n = write(ctl,ts,sizeof(ts));
>
> fails.
>
> Can someone explain?

Obviously, ts is a char* and, therefore, its size is 4.
You want strlen(ts) instead of sizeof(ts).

	Sape