[Toybox] names_to_pid() of killall checks only first argument from /proc/*/cmdline

[Yeongdeok Suh]

I discovered a different behavior between toybox and busybox killall.

In case of process running script,
when I run killall with the script file name, busybox kill the process,
but toybox doesn't. (and Ubuntu util also)

like this:
-------------------------------------------------------------------------------------------------------------------
# ps -ef | grep python
root+  8095  1766  0 17:36 ?        00:00:01 /usr/bin/python
/usr/bin/terminator
root+ 26021  4400  0 18:39 pts/29   00:00:00 grep --color=auto python

#killall terminator
//busybox: kill 8095
//toybox: No such process
-------------------------------------------------------------------------------------------------------------------

In the toybox source, (lib/lib.c) names_to_pid(),
readfile() returns only first argument, "python" from /proc/*/cmdline
and compare with the argument ('terminator'), print error.

--(/proc/8095/cmdline)---------------------------------
/usr/bin/python /usr/bin/terminator
-----------------------------------------------------------------

Is this correct? Or is there any standard about this?
I can't sure which one is correct.

What I checked spec is below.
http://refspecs.linuxbase.org/LSB_3.1.1/LSB-Core-generic/LSB-Core-generic/killall.html
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