Makefile: Documentation for external tool should be correct
If one includes documentation for an external tool, it should be correct. This is not: 1. Overriding the input to rngd should typically be neither necessary nor desired. This is especially so since newer versions of rngd support a number of different *types* of sources. 2. The default kernel-exported device is called /dev/hwrng not /dev/hwrandom nor /dev/hw_random (both of which were used in the past; however, kernel and udev seem to have converged on /dev/hwrng.) Overall it is better if the documentation for rngd is kept with rngd rather than in a kernel Makefile. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Cc: David Howells <dhowells@redhat.com> Cc: Jeff Garzik <jgarzik@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -174,10 +174,8 @@ signing_key.priv signing_key.x509: x509.genkey
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@echo "###"
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@echo "### If this takes a long time, you might wish to run rngd in the"
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@echo "### background to keep the supply of entropy topped up. It"
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@echo "### needs to be run as root, and should use a hardware random"
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@echo "### number generator if one is available, eg:"
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@echo "###"
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@echo "### rngd -r /dev/hwrandom"
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@echo "### needs to be run as root, and uses a hardware random"
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@echo "### number generator if one is available."
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@echo "###"
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openssl req -new -nodes -utf8 $(sign_key_with_hash) -days 36500 -batch \
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-x509 -config x509.genkey \
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