[Bug 529008] Re: Should emulate /proc/cpuinfo

[DaveHansen]

If you're chroot'ing anyway, then you should have privileged access.
You could probably do this entirely in userspace, without even specially
intercepting the syscalls.  When you set up the chroot, just get a copy
of how you want cpuinfo to look, and bind mount it on top of the
existing cpuinfo file:

root at nimitz:~# egrep cache.size\|^processor /proc/cpuinfo 
processor	: 0
cache size	: 4096 KB
processor	: 1
cache size	: 4096 KB
root at nimitz:~# cat /proc/cpuinfo | perl -pe 's/4096 KB/8192 KB/g' > cpuinfo.lie
root at nimitz:~# mount --bind cpuinfo.lie /proc/cpuinfo 
root at nimitz:~# egrep cache.size\|^processor /proc/cpuinfo 
processor	: 0
cache size	: 8192 KB
processor	: 1
cache size	: 8192 KB

Would that work?

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Should emulate /proc/cpuinfo
https://bugs.launchpad.net/bugs/529008
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