%PDF-
%PDF-
Mini Shell
Mini Shell
#!/bin/sh
is_ip() {
echo "$1" | {
IFS=. read a b c d
test "$a" -ge 0 -a "$a" -le 255 \
-a "$b" -ge 0 -a "$b" -le 255 \
-a "$c" -ge 0 -a "$c" -le 255 \
-a "$d" -ge 0 -a "$d" -le 255 \
2> /dev/null
} && return 0
return 1
}
get_ip() {
local iface="$1" ip=""
ip=$(ip -o -f inet addr show $iface)
ip=${ip%%/*}
ip=${ip##* }
echo $ip
}
iface_for_remote_addr() {
set -- $(ip -o route get to $1)
echo $5
}
iface_for_ip() {
set -- $(ip -o addr show to $1)
echo $2
}
iface_for_mac() {
local interface="" mac="$(echo $1 | sed 'y/ABCDEF/abcdef/')"
for interface in /sys/class/net/*; do
if [ $(cat $interface/address) = "$mac" ]; then
echo ${interface##*/}
fi
done
}
# get the iface name for the given identifier - either a MAC, IP, or iface name
iface_name() {
case $1 in
??:??:??:??:??:??|??-??-??-??-??-??) iface_for_mac $1 ;;
*:*:*|*.*.*.*) iface_for_ip $1 ;;
*) echo $1 ;;
esac
}
# list the configured interfaces
configured_ifaces() {
local IFACES="" iface_id="" rv=1
[ -e "/tmp/net.ifaces" ] && read IFACES < /tmp/net.ifaces
if { pidof udevd || pidof systemd-udevd; } > /dev/null; then
for iface_id in $IFACES; do
echo $(iface_name $iface_id)
rv=0
done
else
warn "configured_ifaces called before udev is running"
echo $IFACES
[ -n "$IFACES" ] && rv=0
fi
return $rv
}
all_ifaces_up() {
local iface="" IFACES=""
[ -e "/tmp/net.ifaces" ] && read IFACES < /tmp/net.ifaces
for iface in $IFACES; do
[ -e /tmp/net.$iface.up ] || return 1
done
}
all_ifaces_setup() {
local iface="" IFACES=""
[ -e "/tmp/net.ifaces" ] && read IFACES < /tmp/net.ifaces
for iface in $IFACES; do
[ -e /tmp/net.$iface.did-setup ] || return 1
done
}
get_netroot_ip() {
local prefix="" server="" rest=""
splitsep "$1" ":" prefix server rest
case $server in
[0-9]*\.[0-9]*\.[0-9]*\.[0-9]*) echo "$server"; return 0 ;;
esac
return 1
}
ip_is_local() {
strstr "$(ip route get $1 2>/dev/null)" " via "
}
ifdown() {
local netif="$1"
# ip down/flush ensures that routing info goes away as well
ip link set $netif down
ip addr flush dev $netif
echo "#empty" > /etc/resolv.conf
rm -f -- /tmp/net.$netif.did-setup
[ -z "$DO_VLAN" ] && \
[ -e /sys/class/net/$netif/address ] && \
rm -f -- /tmp/net.$(cat /sys/class/net/$netif/address).did-setup
# TODO: send "offline" uevent?
}
setup_net() {
local netif="$1" f="" gw_ip="" netroot_ip="" iface="" IFACES=""
local _p
[ -e /tmp/net.$netif.did-setup ] && return
[ -z "$DO_VLAN" ] && \
[ -e /sys/class/net/$netif/address ] && \
[ -e /tmp/net.$(cat /sys/class/net/$netif/address).did-setup ] && return
[ -e "/tmp/net.ifaces" ] && read IFACES < /tmp/net.ifaces
[ -z "$IFACES" ] && IFACES="$netif"
# run the scripts written by ifup
[ -e /tmp/net.$netif.hostname ] && . /tmp/net.$netif.hostname
[ -e /tmp/net.$netif.override ] && . /tmp/net.$netif.override
[ -e /tmp/dhclient.$netif.dhcpopts ] && . /tmp/dhclient.$netif.dhcpopts
# set up resolv.conf
[ -e /tmp/net.$netif.resolv.conf ] && \
awk '!array[$0]++' /tmp/net.$netif.resolv.conf > /etc/resolv.conf
[ -e /tmp/net.$netif.gw ] && . /tmp/net.$netif.gw
# add static route
for _p in $(getargs rd.route); do
route_to_var "$_p" || continue
[ -n "$route_dev" ] && [ "$route_dev" != "$netif" ] && continue
ip route add "$route_mask" ${route_gw:+via "$route_gw"} ${route_dev:+dev "$route_dev"}
if strstr "$route_mask" ":"; then
printf -- "%s\n" "$route_mask ${route_gw:+via $route_gw} ${route_dev:+dev $route_dev}" \
> /tmp/net.route6."$netif"
else
printf -- "%s\n" "$route_mask ${route_gw:+via $route_gw} ${route_dev:+dev $route_dev}" \
> /tmp/net.route."$netif"
fi
done
# If a static route was necessary to reach the gateway, the
# first gateway setup call will have failed with
# RTNETLINK answers: Network is unreachable
# Replace the default route again after static routes to cover
# this scenario.
[ -e /tmp/net.$netif.gw ] && . /tmp/net.$netif.gw
# Handle STP Timeout: arping the default gateway.
# (or the root server, if a) it's local or b) there's no gateway.)
# Note: This assumes that if no router is present the
# root server is on the same subnet.
# Get DHCP-provided router IP, or the cmdline-provided "gw=" argument
[ -n "$new_routers" ] && gw_ip=${new_routers%%,*}
[ -n "$gw" ] && gw_ip=$gw
# Get the "netroot" IP (if there's an IP address in there)
netroot_ip=$(get_netroot_ip $netroot)
# try netroot if it's local (or there's no gateway)
if ip_is_local $netroot_ip || [ -z "$gw_ip" ]; then
dest="$netroot_ip"
else
dest="$gw_ip"
fi
unset layer2
if [ -f /sys/class/net/$netif/device/layer2 ]; then
read layer2 < /sys/class/net/$netif/device/layer2
fi
if [ "$layer2" != "0" ] && [ -n "$dest" ] && ! strstr "$dest" ":"; then
if command -v arping2 >/dev/null; then
arping2 -q -C 1 -c 60 -I $netif $dest || info "Resolving $dest via ARP on $netif failed"
else
arping -q -f -w 60 -I $netif $dest || info "Resolving $dest via ARP on $netif failed"
fi
fi
unset layer2
> /tmp/net.$netif.did-setup
[ -z "$DO_VLAN" ] && \
[ -e /sys/class/net/$netif/address ] && \
> /tmp/net.$(cat /sys/class/net/$netif/address).did-setup
}
save_netinfo() {
local netif="$1" IFACES="" f="" i=""
[ -e /tmp/net.ifaces ] && read IFACES < /tmp/net.ifaces
# Add $netif to the front of IFACES (if it's not there already).
set -- "$netif"
for i in $IFACES; do [ "$i" != "$netif" ] && set -- "$@" "$i"; done
IFACES="$*"
for i in $IFACES; do
for f in /tmp/dhclient.$i.*; do
[ -f $f ] && cp -f $f /tmp/net.${f#/tmp/dhclient.}
done
done
echo $IFACES > /tmp/.net.ifaces.new
mv /tmp/.net.ifaces.new /tmp/net.ifaces
}
set_ifname() {
local name="$1" mac="$2" num=-1 n=""
# if it's already set, return the existing name
for n in $(getargs ifname=); do
strstr "$n" "$mac" && echo ${n%%:*} && return
done
# otherwise, pick a new name and use that
while :; do
num=$(($num+1));
[ -e /sys/class/net/$name$num ] && continue
for n in $(getargs ifname=); do
[ "$name$num" = "${n%%:*}" ] && continue 2
done
break
done
echo "ifname=$name$num:$mac" >> /etc/cmdline.d/45-ifname.conf
echo "$name$num"
}
# pxelinux provides macaddr '-' separated, but we need ':'
fix_bootif() {
local macaddr=${1}
local IFS='-'
macaddr=$(printf '%s:' ${macaddr})
macaddr=${macaddr%:}
# strip hardware type field from pxelinux
[ -n "${macaddr%??:??:??:??:??:??}" ] && macaddr=${macaddr#??:}
# return macaddr with lowercase alpha characters expected by udev
echo $macaddr | sed 'y/ABCDEF/abcdef/'
}
ibft_to_cmdline() {
local iface=""
modprobe -q iscsi_ibft
(
for iface in /sys/firmware/ibft/ethernet*; do
local mac="" dev=""
local dhcp="" ip="" gw="" mask="" hostname=""
local dns1 dns2
[ -e ${iface}/mac ] || continue
mac=$(read a < ${iface}/mac; echo $a)
[ -z "$mac" ] && continue
dev=$(set_ifname ibft $mac)
[ -e /tmp/net.${dev}.has_ibft_config ] && continue
[ -e ${iface}/flags ] && flags=$(read a < ${iface}/flags; echo $a)
# Skip invalid interfaces
(( $flags & 1 )) || continue
# Skip interfaces not used for booting unless using multipath
if ! getargbool 0 rd.iscsi.mp ; then
(( $flags & 2 )) || continue
fi
[ -e ${iface}/dhcp ] && dhcp=$(read a < ${iface}/dhcp; echo $a)
[ -e ${iface}/origin ] && origin=$(read a < ${iface}/origin; echo $a)
[ -e ${iface}/ip-addr ] && ip=$(read a < ${iface}/ip-addr; echo $a)
if [ -n "$ip" ] ; then
case "$ip" in
*.*.*.*)
family=ipv4
;;
*:*)
family=ipv6
;;
esac
fi
if [ -n "$dhcp" ] || [ "$origin" -eq 3 ]; then
if [ "$family" = "ipv6" ] ; then
echo "ip=$dev:dhcp6"
else
echo "ip=$dev:dhcp"
fi
elif [ -e ${iface}/ip-addr ]; then
# skip not assigned ip adresses
[ "$ip" = "0.0.0.0" ] && continue
[ -e ${iface}/gateway ] && gw=$(read a < ${iface}/gateway; echo $a)
[ "$gateway" = "0.0.0.0" ] && unset $gateway
[ -e ${iface}/subnet-mask ] && mask=$(read a < ${iface}/subnet-mask; echo $a)
[ -e ${iface}/prefix-len ] && prefix=$(read a < ${iface}/prefix-len; echo $a)
[ -e ${iface}/primary-dns ] && dns1=$(read a < ${iface}/primary-dns; echo $a)
[ "$dns1" = "0.0.0.0" ] && unset $dns1
[ -e ${iface}/secondary-dns ] && dns2=$(read a < ${iface}/secondary-dns; echo $a)
[ "$dns2" = "0.0.0.0" ] && unset $dns2
[ -e ${iface}/hostname ] && hostname=$(read a < ${iface}/hostname; echo $a)
if [ "$family" = "ipv6" ] ; then
if [ -n "$ip" ] ; then
ip="[$ip]"
[ -n "$prefix" ] || prefix=64
ip="[${ip}/${prefix}]"
mask=
fi
if [ -n "$gw" ] ; then
gw="[${gw}]"
fi
fi
if [ -n "$ip" ] && [ -n "$mask" -o -n "$prefix" ]; then
echo "ip=$ip::$gw:$mask:$hostname:$dev:none${dns1:+:$dns1}${dns2:+:$dns2}"
else
warn "${iface} does not contain a valid iBFT configuration"
warn "ip-addr=$ip"
warn "gateway=$gw"
warn "subnet-mask=$mask"
warn "hostname=$hostname"
fi
else
info "${iface} does not contain a valid iBFT configuration"
ls -l ${iface} | vinfo
fi
if [ -e ${iface}/vlan ]; then
vlan=$(read a < ${iface}/vlan; echo $a)
if [ "$vlan" -ne "0" ]; then
case "$vlan" in
[0-9]*)
echo "vlan=$dev.$vlan:$dev"
echo $mac > /tmp/net.${dev}.${vlan}.has_ibft_config
;;
*)
echo "vlan=$vlan:$dev"
echo $mac > /tmp/net.${vlan}.has_ibft_config
;;
esac
else
echo $mac > /tmp/net.${dev}.has_ibft_config
fi
else
echo $mac > /tmp/net.${dev}.has_ibft_config
fi
done
) >> /etc/cmdline.d/40-ibft.conf
}
parse_iscsi_root()
{
local v
v=${1#iscsi:}
# extract authentication info
case "$v" in
*@*:*:*:*:*)
authinfo=${v%%@*}
v=${v#*@}
# allow empty authinfo to allow having an @ in iscsi_target_name like this:
# netroot=iscsi:@192.168.1.100::3260::iqn.2009-01.com.example:testdi@sk
if [ -n "$authinfo" ]; then
OLDIFS="$IFS"
IFS=:
set $authinfo
IFS="$OLDIFS"
if [ $# -gt 4 ]; then
warn "Wrong authentication info in iscsi: parameter!"
return 1
fi
iscsi_username=$1
iscsi_password=$2
if [ $# -gt 2 ]; then
iscsi_in_username=$3
iscsi_in_password=$4
fi
fi
;;
esac
# extract target ip
case "$v" in
[[]*[]]:*)
iscsi_target_ip=${v#[[]}
iscsi_target_ip=${iscsi_target_ip%%[]]*}
v=${v#[[]$iscsi_target_ip[]]:}
;;
*)
iscsi_target_ip=${v%%[:]*}
v=${v#$iscsi_target_ip:}
;;
esac
unset iscsi_target_name
# extract target name
case "$v" in
*:iqn.*)
iscsi_target_name=iqn.${v##*:iqn.}
v=${v%:iqn.*}:
;;
*:eui.*)
iscsi_target_name=eui.${v##*:eui.}
v=${v%:eui.*}:
;;
*:naa.*)
iscsi_target_name=naa.${v##*:naa.}
v=${v%:naa.*}:
;;
esac
# parse the rest
OLDIFS="$IFS"
IFS=:
set $v
IFS="$OLDIFS"
iscsi_protocol=$1; shift # ignored
iscsi_target_port=$1; shift
if [ -n "$iscsi_target_name" ]; then
if [ $# -eq 3 ]; then
iscsi_iface_name=$1; shift
fi
if [ $# -eq 2 ]; then
iscsi_netdev_name=$1; shift
fi
iscsi_lun=$1; shift
if [ $# -ne 0 ]; then
warn "Invalid parameter in iscsi: parameter!"
return 1
fi
return 0
fi
if [ $# -gt 3 ] && [ -n "$1$2" ]; then
if [ -z "$3" ] || [ "$3" -ge 0 ] 2>/dev/null ; then
iscsi_iface_name=$1; shift
iscsi_netdev_name=$1; shift
fi
fi
iscsi_lun=$1; shift
iscsi_target_name=$(printf "%s:" "$@")
iscsi_target_name=${iscsi_target_name%:}
}
ip_to_var() {
local v=${1}:
local i
set --
while [ -n "$v" ]; do
if [ "${v#\[*:*:*\]:}" != "$v" ]; then
# handle IPv6 address
i="${v%%\]:*}"
i="${i##\[}"
set -- "$@" "$i"
v=${v#\[$i\]:}
else
set -- "$@" "${v%%:*}"
v=${v#*:}
fi
done
unset ip srv gw mask hostname dev autoconf macaddr mtu dns1 dns2
if [ $# -eq 0 ]; then
autoconf="error"
return 0
fi
if [ $# -eq 1 ]; then
# format: ip={dhcp|on|any|dhcp6|auto6|either6}
# or
# ip=<ipv4-address> means anaconda-style static config argument cluster
autoconf="$1"
if strglob "$autoconf" "*.*.*.*"; then
# ip=<ipv4-address> means anaconda-style static config argument cluster:
# ip=<ip> gateway=<gw> netmask=<nm> hostname=<host> mtu=<mtu>
# ksdevice={link|bootif|ibft|<MAC>|<ifname>}
ip="$autoconf"
gw=$(getarg gateway=)
mask=$(getarg netmask=)
hostname=$(getarg hostname=)
dev=$(getarg ksdevice=)
autoconf="none"
mtu=$(getarg mtu=)
# handle special values for ksdevice
case "$dev" in
bootif|BOOTIF) dev=$(fix_bootif $(getarg BOOTIF=)) ;;
link) dev="" ;; # FIXME: do something useful with this
ibft) dev="" ;; # ignore - ibft is handled elsewhere
esac
fi
return 0
fi
if [ "$2" = "dhcp" -o "$2" = "on" -o "$2" = "any" -o "$2" = "dhcp6" -o "$2" = "auto6" -o "$2" = "either6" ]; then
# format: ip=<interface>:{dhcp|on|any|dhcp6|auto6}[:[<mtu>][:<macaddr>]]
[ -n "$1" ] && dev="$1"
[ -n "$2" ] && autoconf="$2"
[ -n "$3" ] && mtu=$3
if [ -z "$5" ]; then
macaddr="$4"
else
macaddr="${4}:${5}:${6}:${7}:${8}:${9}"
fi
return 0
fi
# format: ip=<client-IP>:[<peer>]:<gateway-IP>:<netmask>:<client_hostname>:<interface>:{none|off|dhcp|on|any|dhcp6|auto6|ibft}:[:[<mtu>][:<macaddr>]]
[ -n "$1" ] && ip=$1
[ -n "$2" ] && srv=$2
[ -n "$3" ] && gw=$3
[ -n "$4" ] && mask=$4
[ -n "$5" ] && hostname=$5
[ -n "$6" ] && dev=$6
[ -n "$7" ] && autoconf=$7
case "$8" in
[0-9a-fA-F]*:*|[0-9]*.[0-9]*.[0-9]*.[0-9]*)
dns1="$8"
[ -n "$9" ] && dns2="$9"
;;
[0-9]*)
mtu="$8"
if [ -n "${9}" -a -z "${10}" ]; then
macaddr="${9}"
elif [ -n "${9}" -a -n "${10}" -a -n "${11}" -a -n "${12}" -a -n "${13}" -a -n "${14}" ]; then
macaddr="${9}:${10}:${11}:${12}:${13}:${14}"
fi
;;
*)
if [ -n "${9}" -a -z "${10}" ]; then
macaddr="${9}"
elif [ -n "${9}" -a -n "${10}" -a -n "${11}" -a -n "${12}" -a -n "${13}" -a -n "${14}" ]; then
macaddr="${9}:${10}:${11}:${12}:${13}:${14}"
fi
;;
esac
return 0
}
route_to_var() {
local v=${1}:
local i
set --
while [ -n "$v" ]; do
if [ "${v#\[*:*:*\]:}" != "$v" ]; then
# handle IPv6 address
i="${v%%\]:*}"
i="${i##\[}"
set -- "$@" "$i"
v=${v#\[$i\]:}
else
set -- "$@" "${v%%:*}"
v=${v#*:}
fi
done
unset route_mask route_gw route_dev
case $# in
2) [ -n "$1" ] && route_mask="$1"; [ -n "$2" ] && route_gw="$2"
return 0;;
3) [ -n "$1" ] && route_mask="$1"; [ -n "$2" ] && route_gw="$2"; [ -n "$3" ] && route_dev="$3"
return 0;;
*) return 1;;
esac
}
parse_ifname_opts() {
local IFS=:
set $1
case $# in
7)
ifname_if=$1
# udev requires MAC addresses to be lower case
ifname_mac=$(echo $2:$3:$4:$5:$6:$7 | sed 'y/ABCDEF/abcdef/')
;;
21)
ifname_if=$1
# udev requires MAC addresses to be lower case
ifname_mac=$(echo $2:$3:$4:$5:$6:$7:$8:$9:${10}:${11}:${12}:${13}:${14}:${15}:${16}:${17}:${18}:${19}:${20}:${21} | sed 'y/ABCDEF/abcdef/')
;;
*)
die "Invalid arguments for ifname="
;;
esac
case $ifname_if in
eth[0-9]|eth[0-9][0-9]|eth[0-9][0-9][0-9]|eth[0-9][0-9][0-9][0-9])
warn "ifname=$ifname_if uses the kernel name space for interfaces"
warn "This can fail for multiple network interfaces and is discouraged!"
warn "Please use a custom name like \"netboot\" or \"bluesocket\""
warn "or use biosdevname and no ifname= at all."
;;
esac
}
# some network driver need long time to initialize, wait before it's ready.
wait_for_if_link() {
local cnt=0
local li
local timeout="$(getargs rd.net.timeout.iflink=)"
timeout=${timeout:-60}
timeout=$(($timeout*10))
while [ $cnt -lt $timeout ]; do
li=$(ip -o link show dev $1 2>/dev/null)
[ -n "$li" ] && return 0
sleep 0.1
cnt=$(($cnt+1))
done
return 1
}
wait_for_if_up() {
local cnt=0
local li
local timeout="$(getargs rd.net.timeout.ifup=)"
timeout=${timeout:-20}
timeout=$(($timeout*10))
while [ $cnt -lt $timeout ]; do
li=$(ip -o link show up dev $1)
if [ -n "$li" ]; then
case "$li" in
*\<UP*)
return 0;;
*\<*,UP\>*)
return 0;;
*\<*,UP,*\>*)
return 0;;
esac
fi
if strstr "$li" "LOWER_UP" \
&& strstr "$li" "state UNKNOWN" \
&& ! strstr "$li" "DORMANT"; then
return 0
fi
sleep 0.1
cnt=$(($cnt+1))
done
return 1
}
wait_for_route_ok() {
local cnt=0
local timeout="$(getargs rd.net.timeout.route=)"
timeout=${timeout:-20}
timeout=$(($timeout*10))
while [ $cnt -lt $timeout ]; do
li=$(ip route show)
[ -n "$li" ] && [ -z "${li##*$1*}" ] && return 0
sleep 0.1
cnt=$(($cnt+1))
done
return 1
}
wait_for_ipv6_dad_link() {
local cnt=0
local timeout="$(getargs rd.net.timeout.ipv6dad=)"
timeout=${timeout:-50}
timeout=$(($timeout*10))
while [ $cnt -lt $timeout ]; do
[ -n "$(ip -6 addr show dev "$1" scope link)" ] \
&& [ -z "$(ip -6 addr show dev "$1" scope link tentative)" ] \
&& return 0
[ -n "$(ip -6 addr show dev "$1" scope link dadfailed)" ] \
&& return 1
sleep 0.1
cnt=$(($cnt+1))
done
return 1
}
wait_for_ipv6_dad() {
local cnt=0
local timeout="$(getargs rd.net.timeout.ipv6dad=)"
timeout=${timeout:-50}
timeout=$(($timeout*10))
while [ $cnt -lt $timeout ]; do
[ -n "$(ip -6 addr show dev "$1")" ] \
&& [ -z "$(ip -6 addr show dev "$1" tentative)" ] \
&& [ -n "$(ip -6 route list proto ra dev "$1" | grep ^default)" ] \
&& return 0
[ -n "$(ip -6 addr show dev "$1" dadfailed)" ] \
&& return 1
sleep 0.1
cnt=$(($cnt+1))
done
return 1
}
wait_for_ipv6_auto() {
local cnt=0
local timeout="$(getargs rd.net.timeout.ipv6auto=)"
timeout=${timeout:-40}
timeout=$(($timeout*10))
while [ $cnt -lt $timeout ]; do
[ -z "$(ip -6 addr show dev "$1" tentative)" ] \
&& [ -n "$(ip -6 route list proto ra dev "$1" | grep ^default)" ] \
&& return 0
sleep 0.1
cnt=$(($cnt+1))
done
return 1
}
linkup() {
wait_for_if_link $1 2>/dev/null\
&& ip link set $1 up 2>/dev/null\
&& wait_for_if_up $1 2>/dev/null
}
type hostname >/dev/null 2>&1 || \
hostname() {
cat /proc/sys/kernel/hostname
}
iface_has_carrier() {
local cnt=0
local interface="$1" flags=""
[ -n "$interface" ] || return 2
interface="/sys/class/net/$interface"
[ -d "$interface" ] || return 2
local timeout="$(getargs rd.net.timeout.carrier=)"
timeout=${timeout:-10}
timeout=$(($timeout*10))
linkup "$1"
li=$(ip -o link show up dev $1)
strstr "$li" "NO-CARRIER" && _no_carrier_flag=1
while [ $cnt -lt $timeout ]; do
if [ -n "$_no_carrier_flag" ]; then
li=$(ip -o link show up dev $1)
# NO-CARRIER flag was cleared
strstr "$li" "NO-CARRIER" || return 0
elif ! [ -e "$interface/carrier" ]; then
# sysfs not available and "NO-CARRIER" not displayed
return 0
fi
# double check the syscfs carrier flag
[ -e "$interface/carrier" ] && [ "$(cat $interface/carrier)" = 1 ] && return 0
sleep 0.1
cnt=$(($cnt+1))
done
return 1
}
iface_has_link() {
iface_has_carrier "$@"
}
iface_is_enslaved() {
local _li
_li=$(ip -o link show dev $1)
strstr "$_li" " master " || return 1
return 0
}
find_iface_with_link() {
local iface_path="" iface=""
for iface_path in /sys/class/net/*; do
iface=${iface_path##*/}
str_starts "$iface" "lo" && continue
if iface_has_link $iface; then
echo "$iface"
return 0
fi
done
return 1
}
is_persistent_ethernet_name() {
local _netif="$1"
local _name_assign_type="0"
[ -f "/sys/class/net/$_netif/name_assign_type" ] \
&& _name_assign_type=$(cat "/sys/class/net/$_netif/name_assign_type")
# NET_NAME_ENUM 1
[ "$_name_assign_type" = "1" ] && return 1
# NET_NAME_PREDICTABLE 2
[ "$_name_assign_type" = "2" ] && return 0
case "$_netif" in
# udev persistent interface names
eno[0-9]|eno[0-9][0-9]|eno[0-9][0-9][0-9]*)
;;
ens[0-9]|ens[0-9][0-9]|ens[0-9][0-9][0-9]*)
;;
enp[0-9]s[0-9]*|enp[0-9][0-9]s[0-9]*|enp[0-9][0-9][0-9]*s[0-9]*)
;;
enP*p[0-9]s[0-9]*|enP*p[0-9][0-9]s[0-9]*|enP*p[0-9][0-9][0-9]*s[0-9]*)
;;
# biosdevname
em[0-9]|em[0-9][0-9]|em[0-9][0-9][0-9]*)
;;
p[0-9]p[0-9]*|p[0-9][0-9]p[0-9]*|p[0-9][0-9][0-9]*p[0-9]*)
;;
*)
return 1
esac
return 0
}
is_kernel_ethernet_name() {
local _netif="$1"
local _name_assign_type="1"
if [ -e "/sys/class/net/$_netif/name_assign_type" ]; then
_name_assign_type=$(cat "/sys/class/net/$_netif/name_assign_type")
case "$_name_assign_type" in
2|3|4)
# NET_NAME_PREDICTABLE 2
# NET_NAME_USER 3
# NET_NAME_RENAMED 4
return 1
;;
1|*)
# NET_NAME_ENUM 1
return 0
;;
esac
fi
# fallback to error prone manual name check
case "$_netif" in
eth[0-9]|eth[0-9][0-9]|eth[0-9][0-9][0-9]*)
return 0
;;
*)
return 1
esac
}
iface_get_subchannels() {
local _netif
local _subchannels
_netif="$1"
_subchannels=$({
for i in /sys/class/net/$_netif/device/cdev[0-9]*; do
[ -e $i ] || continue
channel=$(readlink -f $i)
printf -- "%s" "${channel##*/},"
done
})
[ -n "$_subchannels" ] || return 1
printf -- "%s" ${_subchannels%,}
}
Zerion Mini Shell 1.0