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Revision 1, 0.8 KB
(checked in by root, 6 years ago)
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First post
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| 1 | #!/bin/sh |
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| 2 | # |
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| 3 | # This shell script converts /etc/ethers to preassigned leases in |
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| 4 | # /var/udhcpd.leases. It's used to reserve IPs for certain hosts |
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| 5 | # by making udhcpd think it has already given a lease to the host. |
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| 6 | # Run this before starting udhcpd. |
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| 7 | # |
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| 8 | # The input format is: |
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| 9 | # mac-address ip-address |
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| 10 | # |
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| 11 | # Comment lines and blank lines are ignored |
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| 12 | # |
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| 13 | while m=i=j= && read m i j |
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| 14 | do |
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| 15 | case "$m" in |
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| 16 | ""|\#*) continue |
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| 17 | ;; |
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| 18 | esac |
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| 19 | case "$i" in |
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| 20 | "") continue |
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| 21 | ;; |
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| 22 | esac |
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| 23 | a=$(echo $m | sed -e 's/:/ 0x/g' -e 's/^/0x/') |
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| 24 | b=$(echo $i | sed 's/\./ /g') |
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| 25 | s=$(printf '\\%03o\\%03o\\%03o\\%03o\\%03o\\%03o\\0\\0\\0\\0\\0\\0\\0\\0\\0\\0\\%03o\\%03o\\%03o\\%03o\\177\\\ |
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| 26 | 377\\377\\177' $a $b) |
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| 27 | echo -ne $s 1>&4 |
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| 28 | done < /etc/ethers 4> /var/state/udhcpd.leases |
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