/proc/<pid>/cmdline and udhcpcd
Bernd Petrovitsch
bernd at petrovitsch.priv.at
Wed Mar 26 09:52:29 UTC 2014
On Mit, 2014-03-26 at 10:01 +0100, Ralf Friedl wrote:
[....]
> But the /proc/<pid>/cmdline interface doesn't convert null bytes to
> spaces. Doing so would lose information. Some programs may choose to do
> this conversion, but programs reading cmdline must be prepared for null
> bytes anyway.
>
> hex -g /proc/30883/cmdline
> 0000 2f 75 73 72 2f 73 62 69 6e 2f 61 63 70 69 64 00 /usr/sbin/acpid.
> 0010 2d 6e 00 2d 66 00 -n.-f.
Yup, the '\0' always separates the parameters ....
Kind regards,
Bernd
--
Bernd Petrovitsch Email : bernd at petrovitsch.priv.at
LUGA : http://www.luga.at
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