[Qemu-devel] [PATCH] Lets you set the target system time at startup

[Qemu-devel] [PATCH] Lets you set the target system time at startup

[Schiwed]

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Hello everybody,

I wrote a little patch, that lets you set the initial target system time at 
startup
of qemu. I thought it might be interesting for others, too.

This patch gives you an additional command line option '-initialtime n' with n 
being the 
initial target system time in seconds since the unix epoch. The formm of the 
argument as 
seconds instead of a date and time in the form YYYY.MM.DD-HH:SS is probably 
improvable, but it 
was much easier to implement :-))) and on unix machines, at least, you have 
the tools at hand 
to easily convert any date and time to seconds, so I thohght I'd just leave it 
in seconds 
for the time being.

The patch also adds a section to the help text (the one you see with qemu -h) 
and to the 
man-page.

Oh, the patch is against version 0.8.0 but should be easily adjustable to 
other versions, too.

Hope yall find it useful and thanks for the great software,

   Volker

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Patch adding command-line option '-initialtime' to qemu to set the
initial date and time of the target systems real time clock.

Written, 21.12.2005, Volker Wedemeier

To apply the patch, copy patchfile to folder above qemu-0.8.0, then do
> gunzip qemu-initialtime.patch.gz

then
> patch -p0 < qemu-initialtime.patch

Configure, compile and install as usual.