[systemd-devel] if StandardInput is set, echo messages from script doesn't show up on terminal.

[Navneet Sinha]

Gentle Reminder mail for looking into the issue.

Thanks
Navneet

On Mon, Jan 18, 2016 at 11:05 PM, Navneet Sinha <nnavneetsinha1001 at gmail.com
> wrote:

> Any updates ?
>
> On Fri, Jan 15, 2016 at 11:16 AM, Navneet Sinha <
> nnavneetsinha1001 at gmail.com> wrote:
>
>> I have systemd service, say foo.service.
>>
>> *Service file*
>>
>>   [Unit]
>>   Description=Foo agent.
>>   After=fooAfter.service
>>   Before=fooBefore1.service
>>   Before=fooBefore2.service
>>
>>   [Service]
>>   # During boot the foo.sh script reads input from /dev/console.  If the
>> user
>>   # hits <ESC>, it will skip waiting for foo and foo2 to startup.
>>   Type=oneshot
>>   StandardInput=tty
>>   StandardOutput=tty
>>   ExecStart=/usr/bin/foo.sh start
>>
>>   RemainAfterExit=True
>>   ExecStop=/usr/bin/foo.sh stop
>>
>>   [Install]
>>   WantedBy=multi-user.target
>>
>>
>> *start function from foo.sh*
>>
>> start() {
>>
>>     echo -n "This is a fake systemd service"
>>     success
>>     echo
>>     exit 0
>> }
>>
>> During boot up this service file is being executed
>> Following is what I am seeing :
>>
>> "2016-01-14 20:24:39.693603 11760 pexpect              2 c:abc3#1
>> received:* 'This is a fake s'*
>>
>> Instead I expected *"This is a fake systemd service"* and in next line *"[
>> OK ]"*
>>
>> *systemd version *is :  systemd-201-2.fc18.9.i686
>>
>> *systemd configuration* for the system, I am using is :
>>
>> systemd.default_standard_output=tty
>> systemd.show_status=0
>>
>>
>> On further debugging, what I see if I add just a "sleep 1" after echo.
>> Missing echo Messages starts showing up during boot up OR if I remove
>> "StandardInput" attribute from the service file.
>>
>> So, the issue I am suspecting has something to do with this process
>> becoming the controlling process for the terminal( as StandardInput is set
>> ).
>>
>> *start function from foo.sh after adding "sleep 1"*
>>
>> start() {
>>
>>     echo -n "This is a fake systemd service"
>>     success
>>     echo
>>     *sleep 1*
>>     exit 0
>> }
>>
>> Can somebody explain this  and also suggest a better solution, if there
>> is.
>>
>> Thanks
>> Navneet
>>
>
>
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