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dracut.13778
0516-mkinitrd-suse.sh-Fix-prefix-calculation.patch
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File 0516-mkinitrd-suse.sh-Fix-prefix-calculation.patch of Package dracut.13778
From 7cf2c21798b537a5553ecc23df5ce8cfda631e9c Mon Sep 17 00:00:00 2001 From: Daniel Molkentin <dmolkentin@suse.com> Date: Tue, 25 Apr 2017 15:25:20 +0200 Subject: [PATCH] mkinitrd-suse.sh: Fix prefix calculation The previous algorithm was incorrect and would return incorrect results e.g. for a /20 mask. Also gets rid of an undocumented depencency on bc(1). Reference: bsc#1035743 --- mkinitrd-suse.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mkinitrd-suse.sh b/mkinitrd-suse.sh index bc49d731..d9de81b9 100755 --- a/mkinitrd-suse.sh +++ b/mkinitrd-suse.sh @@ -104,7 +104,7 @@ calc_netmask() { local prefix=$1 [ -z "$prefix" ] && return - mask=$(echo "(2 ^ 32) - (2 ^ $prefix)" | bc -l) + mask=$(( 0xffffffff << (32 - $prefix) )) byte1=$(( mask >> 24 )) byte2=$(( mask >> 16 )) byte3=$(( mask >> 8 )) -- 2.12.0
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