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rng-random: add an RNG backend that uses /dev/random (v3)

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The filename can be overridden but it expects a non-blocking source of entropy.
A typical invocation would be:

qemu -object rng-random,id=rng0 -device virtio-rng-pci,rng=rng0

This can also be used with /dev/urandom by using the command line:

qemu -object rng-random,filename=/dev/urandom,id=rng0 \
     -device virtio-rng-pci,rng=rng0

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
---
v1 -> v2
 - merged header split patch into this one
v2 -> v3
 - bug fix in rng-random (Paolo)
This commit is contained in:
Anthony Liguori 2012-06-25 10:34:09 -05:00
parent a9b7b2ad7b
commit 5c74521d24
3 changed files with 184 additions and 1 deletions
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2
backends/Makefile.objs
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@ -1 +1 @@
common-obj-y += rng.o
common-obj-y += rng.o rng-random.o