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From c7b21c88d27aace097ce9bc1fc36f4b742858737 Mon Sep 17 00:00:00 2001
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From: Pavel Valena <pvalena@redhat.com>
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Date: Mon, 22 Nov 2021 16:40:39 +0100
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Subject: [PATCH] fix(network): add errors and warnings when network interface
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does not exist
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End with error, or show a warning when nonexistent device is specified for network setup like
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`ip=10.12.8.12::10.12.255.254:255.255.0.0:xk12:eth0:off`.
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I've added the error only for `write-ifcfg.sh`, as I think no such setup should be written.
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Resolves: #1712424
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---
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modules.d/35network-legacy/ifup.sh | 6 +++++-
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modules.d/35network-legacy/parse-ip-opts.sh | 5 +++++
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modules.d/45ifcfg/write-ifcfg.sh | 5 +++++
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3 files changed, 15 insertions(+), 1 deletion(-)
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diff --git a/modules.d/35network-legacy/ifup.sh b/modules.d/35network-legacy/ifup.sh
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index bd560379..0e9a6928 100755
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--- a/modules.d/35network-legacy/ifup.sh
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+++ b/modules.d/35network-legacy/ifup.sh
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@@ -413,7 +413,11 @@ for p in $(getargs ip=); do
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# If this option isn't directed at our interface, skip it
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if [ -n "$dev" ]; then
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- [ "$dev" != "$netif" ] && continue
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+ if [ "$dev" != "$netif" ]; then
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+ [ ! -e "/sys/class/net/$dev" ] \
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+ && warn "Network interface '$dev' does not exist!"
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+ continue
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+ fi
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else
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iface_is_enslaved "$netif" && continue
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fi
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diff --git a/modules.d/35network-legacy/parse-ip-opts.sh b/modules.d/35network-legacy/parse-ip-opts.sh
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index 10a2d19b..eea0988c 100755
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--- a/modules.d/35network-legacy/parse-ip-opts.sh
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+++ b/modules.d/35network-legacy/parse-ip-opts.sh
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@@ -96,6 +96,11 @@ for p in $(getargs ip=); do
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fi
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# IFACES list for later use
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IFACES="$IFACES $dev"
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+
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+ # Interface should exist
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+ if [ ! -e "/sys/class/net/$dev" ]; then
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+ warn "Network interface '$dev' does not exist"
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+ fi
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fi
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# Do we need to check for specific options?
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diff --git a/modules.d/45ifcfg/write-ifcfg.sh b/modules.d/45ifcfg/write-ifcfg.sh
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index abd111fc..7e767f15 100755
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--- a/modules.d/45ifcfg/write-ifcfg.sh
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+++ b/modules.d/45ifcfg/write-ifcfg.sh
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@@ -100,6 +100,11 @@ interface_bind() {
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local _netif="$1"
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local _macaddr="$2"
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+ if [ ! -e "/sys/class/net/$_netif" ]; then
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+ derror "Cannot find network interface '$_netif'!"
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+ return 1
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+ fi
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+
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# see, if we can bind it to some hw parms
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if hw_bind "$_netif" "$_macaddr"; then
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# only print out DEVICE, if it's user assigned
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