On 2013-10-08 1:46 PM, etienne.champet...@free.fr wrote:
> Hi,
> 
> ----- Mail original -----
>> De: "Felix Fietkau" <n...@openwrt.org>
>> À: "OpenWrt Development List" <openwrt-devel@lists.openwrt.org>
>> Cc: "Sujith Manoharan" <c_man...@qca.qualcomm.com>, "Luis R. Rodriguez" 
>> <mcg...@qca.qualcomm.com>
>> Envoyé: Mardi 8 Octobre 2013 13:05:49
>> Objet: Re: [OpenWrt-Devel] [PATCH 5/7] hostapd: prompt user confirmation 
>> when WPS is used with hiden ssid
>> 
>> On 2013-09-10 2:16 AM, Luis R. Rodriguez wrote:
>> > From: Mathieu Olivari <math...@qca.qualcomm.com>
>> > 
>> > This is required explicitly for WPS 2.0 testing.
>> > 
>> > Signed-off-by: Mathieu Olivari <math...@qca.qualcomm.com>
>> > Signed-off-by: Sujith Manoharan <c_man...@qca.qualcomm.com>
>> > Signed-off-by: Luis R. Rodriguez <mcg...@qca.qualcomm.com>
>> NACK. You should not assume that /sbin/wifi is called interactively.
>> It
>> is frequently called by scripts, and this patch could cause nasty
>> script
>> hangs.
>> 
>> - Felix
> 
> i've tested when the patch was submitted and
> read -s -n 1
> is intelligent enough to detect that there is no stdin and not hang
> 
> I don't know if it's always true (true for busybox read)
Even if there is a stdin connected, this can cause issues, e.g. if
/sbin/wifi is called from a script that is run from a connected terminal.

Once I've migrated wifi to netifd, there will be better ways of
reporting errors.

- Felix
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