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Diffstat (limited to 'net-scripts/init.d/net.lo')
-rwxr-xr-xnet-scripts/init.d/net.lo287
1 files changed, 207 insertions, 80 deletions
diff --git a/net-scripts/init.d/net.lo b/net-scripts/init.d/net.lo
index f73dfac..4734a59 100755
--- a/net-scripts/init.d/net.lo
+++ b/net-scripts/init.d/net.lo
@@ -12,6 +12,7 @@
# runlevel as the net.* script that needs it.
depend() {
need localmount
+ after hostname
use isapnp isdn pcmcia usb wlan
# Load any custom depend functions for the given interface
@@ -25,9 +26,6 @@ depend() {
# Define where our modules are
MODULES_DIR="${svclib}/net.modules.d"
-# Load some functions shared between ourselves and our DHCP helpers
-source "${MODULES_DIR}/helpers.d/functions"
-
# Make some wrappers to fudge after/before/need/use depend flags.
# These are callbacks so MODULE will be set.
after() {
@@ -54,11 +52,176 @@ variables() {
eval "${MODULE}_variables() { echo \"$*\"; }"
}
+is_loopback() {
+ [[ $1 == "lo" || $1 == "lo"[0-9]* ]]
+}
+
+# char* interface_device(char *iface)
+#
+# Gets the base device of the interface
+# Can handle eth0:1 and eth0.1
+# Which returns eth0 in this case
+interface_device() {
+ local dev="${1%%.*}"
+ [[ ${dev} == "$1" ]] && dev="${1%%:*}"
+ echo "${dev}"
+}
+
+# char* interface_type(char* iface)
+#
+# Returns the base type of the interface
+# eth, ippp, etc
+interface_type() {
+ echo "${1%%[0-9]*}"
+}
+
+# int calculate_metric(char *interface)
+#
+# Calculates the best metric for the interface
+# The Linux kernel does not use this at the moment, but we use it so that
+# default routes remain and we can work out the "best" interface
+calculate_metric() {
+ local iface="$1" exclude='$1!="Iface" && $1!="lo"'
+
+ # Have we already got a metric?
+ local m="$( awk '$1=="'${iface}'" && $2=="00000000" { print $7 }' \
+ /proc/net/route )"
+ if [[ -n ${m} ]] ; then
+ echo "${m}"
+ return 0
+ fi
+
+ local itype="$(interface_type "${iface}")" x i
+
+ # If we're not a wireless device then exclude wireless from the
+ # routing table so we stay < 1000
+ if [[ -e /proc/net/wireless ]] ; then
+ if ! grep -q "^[ \t]*${iface}:[ \t]" /proc/net/wireless ; then
+ local i="$(sed -n -e 's/^[ \t]*\(.*\):.*/\1/p' /proc/net/wireless)"
+ for x in ${i} ; do
+ exclude="${exclude} && "'$1'"!=\"${x}\""
+ done
+ fi
+ fi
+
+ # Exclude ppp and ippp as well
+ local ix="ppp|ippp"
+ [[ ${itype} == "ppp" ]] && ix="ippp"
+ [[ ${itype} == "ippp" ]] && ix="ppp"
+ i="$( sed -n -e 's/^[ ]*\('"${ix}"'[0-9]*\):.*$/\1/p' /proc/net/dev )"
+ for x in ${i} ; do
+ exclude="${exclude} && "'$1'"!=\"${x}\""
+ done
+
+ local m="$( awk "${exclude} { print "'$7'" }" /proc/net/route \
+ | sort -rn | head -n 1 | cut -d' ' -f2 )"
+ m="${m:--1}"
+ (( m ++ ))
+
+ # If we're a wireless device then add 1000 so that wired interfaces take preference
+ if [[ -e /proc/net/wireless ]] ; then
+ grep -q "^[ \t]*${iface}:[ \t]" /proc/net/wireless && (( m+= 1000 ))
+ fi
+
+ # If we're a ppp device then we add 2000 for ISDN, otherwise 3000
+ [[ ${itype} == "ippp" ]] && (( m+= 2000 ))
+ [[ ${itype} == "ppp" ]] && (( m+= 3000 ))
+
+ echo "${m}"
+}
+
+# int netmask2cidr(char *netmask)
+#
+# Returns the CIDR of a given netmask
+netmask2cidr() {
+ local binary="" i bin
+
+ for i in ${1//./ }; do
+ bin=""
+ while [[ ${i} != "0" ]] ; do
+ bin=$[${i}%2]${bin}
+ (( i=i>>1 ))
+ done
+ binary="${binary}${bin}"
+ done
+ binary="${binary%%0*}"
+ echo "${#binary}"
+}
+
+
+# bool is_function(char* name)
+#
+# Returns 0 if the given name is a shell function, otherwise 1
+is_function() {
+ [[ -z $1 ]] && return 1
+ [[ $(type -t "$1") == "function" ]]
+}
+
+# void function_wrap(char* source, char* target)
+#
+# wraps function calls - for example function_wrap(this, that)
+# maps function names this_* to that_*
+function_wrap() {
+ local i
+
+ is_function "${2}_depend" && return
+
+ for i in $( typeset -f | grep -o '^'"${1}"'_[^ ]*' ); do
+ eval "${2}${i#${1}}() { ${i} \"\$@\"; }"
+ done
+}
+
+# char[] * expand_parameters(char *cmd)
+#
+# Returns an array after expanding parameters. For example
+# "192.168.{1..3}.{1..3}/24 brd +"
+# will return
+# "192.168.1.1/24 brd +"
+# "192.168.1.2/24 brd +"
+# "192.168.1.3/24 brd +"
+# "192.168.2.1/24 brd +"
+# "192.168.2.2/24 brd +"
+# "192.168.2.3/24 brd +"
+# "192.168.3.1/24 brd +"
+# "192.168.3.2/24 brd +"
+# "192.168.3.3/24 brd +"
+expand_parameters() {
+ local x="$( eval echo ${@// /_} )"
+ local -a a=( ${x} )
+
+ a=( "${a[@]/#/\"}" )
+ a=( "${a[@]/%/\"}" )
+ echo "${a[*]//_/ }"
+}
+
+# void configure_variables(char *interface, char *option1, [char *option2])
+#
+# Maps configuration options from <variable>_<option> to <variable>_<iface>
+# option2 takes precedence over option1
+configure_variables() {
+ local iface="$1" option1="$2" option2="$3"
+
+ local mod func x i
+ local -a ivars ovars1 ovars2
+ local ifvar="$(bash_variable "${iface}")"
+
+ for mod in ${MODULES[@]}; do
+ is_function ${mod}_variables || continue
+ for v in $(${mod}_variables) ; do
+ x=""
+ [[ -n ${option2} ]] && x="${v}_${option2}[@]"
+ [[ -z ${!x} ]] && x="${v}_${option1}[@]"
+ [[ -n ${!x} ]] && eval "${v}_${ifvar}=( \"\${!x}\" )"
+ done
+ done
+
+ return 0
+}
# bool module_load_minimum(char *module)
#
# Does the minimum checking on a module - even when forcing
module_load_minimum() {
- local f="$1" MODULE="${1##*/}"
+ local f="$1.sh" MODULE="${1##*/}"
if [[ ! -f ${f} ]] ; then
eerror "${f} does not exist"
@@ -72,7 +235,7 @@ module_load_minimum() {
for f in depend; do
is_function "${MODULE}_${f}" && continue
- eerror "${MODULE} does not support the required function ${f}"
+ eerror "${MODULE}.sh does not support the required function ${f}"
return 1
done
@@ -88,7 +251,7 @@ modules_load_auto() {
# Populate the MODULES array
# Basically we treat evey file in ${MODULES_DIR} as a module
- MODULES=( $( cd "${MODULES_DIR}" ; ls ) )
+ MODULES=( $( cd "${MODULES_DIR}" ; ls *.sh ) )
j="${#MODULES[@]}"
for (( i=0; i<j; i++ )); do
MODULES[i]="${MODULES_DIR}/${MODULES[i]}"
@@ -103,6 +266,7 @@ modules_load_auto() {
j="${#MODULES[@]}"
loaded_interface=false
for (( i=0; i<j; i++ )); do
+ MODULES[i]="${MODULES[i]%.sh*}"
if [[ ${MODULES[i]##*/} == "interface" ]] ; then
eerror "interface is a reserved name - cannot load a module called interface"
return 1
@@ -121,7 +285,7 @@ modules_load_auto() {
)
if [[ $? == 0 ]] ; then
- source "${MODULES[i]}"
+ source "${MODULES[i]}.sh"
MODULES[i]="${MODULES[i]##*/}"
else
unset MODULES[i]
@@ -217,8 +381,8 @@ modules_check_user() {
# The function may not exist because the modules software is
# not installed. Load the module and report its error
- if [[ -e "${MODULES_DIR}/${umods[i]}" ]] ; then
- source "${MODULES_DIR}/${umods[i]}"
+ if [[ -e "${MODULES_DIR}/${umods[i]}.sh" ]] ; then
+ source "${MODULES_DIR}/${umods[i]}.sh"
is_function "${umods[i]}_check_installed" \
&& ${umods[i]}_check_installed true
else
@@ -404,7 +568,7 @@ modules_load() {
local RC_INDENTATION="${RC_INDENTATION}"
local -a PROVIDES WRAP_MODULES
- if [[ ${iface} != "lo" ]] ; then
+ if ! is_loopback "${iface}" ; then
x="modules_force_${iface}[@]"
[[ -n ${!x} ]] && modules_force=( "${!x}" )
if [[ -n ${modules_force} ]] ; then
@@ -510,14 +674,10 @@ iface_start() {
local -a config fallback fallback_route conf a b
local ifvar="$(bash_variable "$1")" i j
- # Try and work out a metric for the interface if we're on auto
+ # Try and work out a metric for the interface
x="metric_${ifvar}"
if [[ -z ${!x} ]] ; then
- if [[ ${RC_AUTO_INTERFACE} == "yes" ]] ; then
- eval "metric_${ifvar}=\"$(calculate_metric ${iface})\""
- else
- eval "metric_${ifvar}=0"
- fi
+ eval "metric_${ifvar}=\"$(calculate_metric ${iface})\""
fi
# pre Start any modules with
@@ -572,18 +732,13 @@ iface_start() {
# Provide a default of DHCP if no configuration is set and we're auto
# Otherwise a default of NULL
if [[ -z ${config} ]] ; then
-# if [[ ${RC_AUTO_INTERFACE} == "yes" ]] ; then
- ewarn "Configuration not set for ${iface} - assuming DHCP"
- if is_function "dhcp_start" ; then
- config=( "dhcp" )
- else
- eerror "No DHCP client installed"
- return 1
- fi
-# else
-# config=( "null" )
-# ewarn "Configuration not set for ${iface} - assuming null"
-# fi
+ ewarn "Configuration not set for ${iface} - assuming DHCP"
+ if is_function "dhcp_start" ; then
+ config=( "dhcp" )
+ else
+ eerror "No DHCP client installed"
+ return 1
+ fi
fi
einfo "Bringing up ${iface}"
@@ -612,11 +767,12 @@ iface_start() {
# We do this by testing if the 1st character is a digit
elif [[ ${conf[0]:0:1} == [[:digit:]] || ${conf[0]} == *:* ]] ; then
x="0"
- if [[ ${RC_AUTO_INTERFACE} == "yes" ]] \
- && is_function arping_address_exists ; then
- if arping_address_exists "${iface}" "${conf[0]}" ; then
- eerror "${conf[0]%%/*} already taken on ${iface}"
- x="1"
+ if ! is_loopback "${iface}" ; then
+ if is_function arping_address_exists ; then
+ if arping_address_exists "${iface}" "${conf[0]}" ; then
+ eerror "${conf[0]%%/*} already taken on ${iface}"
+ x="1"
+ fi
fi
fi
[[ ${x} == "0" ]] && interface_add_address "${iface}" ${conf[@]}; x="$?"
@@ -672,7 +828,9 @@ iface_stop() {
# pre Stop any modules
for mod in ${MODULES[@]}; do
- is_function "${mod}_pre_stop" && ${mod}_pre_stop "${iface}"
+ if is_function "${mod}_pre_stop" ; then
+ ${mod}_pre_stop "${iface}" || return 1
+ fi
done
einfo "Bringing down ${iface}"
@@ -691,7 +849,9 @@ iface_stop() {
for i in ${aliases} ${iface}; do
# Stop all our modules
for mod in ${MODULES[@]}; do
- is_function "${mod}_stop" && ${mod}_stop "${i}"
+ if is_function "${mod}_stop" ; then
+ ${mod}_stop "${i}" || return 1
+ fi
done
# A module may have removed the interface
@@ -738,6 +898,10 @@ run_start() {
metric_lo="0"
config_lo=( "127.0.0.1/8 brd 127.255.255.255" "${config_lo[@]}" )
routes_lo=( "127.0.0.0/8" "${routes_lo[@]}" )
+ elif [[ ${iface} == "lo0" ]] ; then
+ metric_lo0="0"
+ config_lo0=( "127.0.0.1/8 brd 127.255.255.255" "${config_lo[@]}" )
+ routes_lo0=( "127.0.0.0/8" "${routes_lo[@]}" )
fi
# We may not have a loaded module for ${iface}
@@ -833,6 +997,9 @@ run_stop() {
iface_stop "${iface}" || return 1 # always succeeds, btw
+ # Release resolv.conf information.
+ [[ -x /sbin/resolvconf ]] && resolvconf -d "${iface}"
+
# Mark us as inactive if called from the background
[[ ${IN_BACKGROUND} == "true" ]] && mark_service_inactive "net.${iface}"
@@ -848,6 +1015,7 @@ run_stop() {
eoutdent
fi
+
return 0
}
@@ -876,7 +1044,9 @@ run() {
[[ ${cmd} == "stop" ]] && starting=false
# We force lo to only use these modules for a major speed boost
- [[ ${iface} == "lo" ]] && modules_force=( "iproute2" "ifconfig" "system" )
+ if is_loopback "${iface}" ; then
+ modules_force=( "iproute2" "ifconfig" "system" )
+ fi
if modules_load "${iface}" "${starting}" ; then
if [[ ${cmd} == "stop" ]] ; then
@@ -887,7 +1057,6 @@ run() {
done
run_stop "${iface}" && r=0
- remove_state "${iface}"
else
# Only hotplug on ethernet interfaces
if [[ ${IN_HOTPLUG} == 1 ]] ; then
@@ -901,19 +1070,7 @@ run() {
fi
fi
- # Only apply best state if we're on auto
- if [[ ${r} == "0" ]] ; then
- local siface=""
- if [[ ${RC_AUTO_INTERFACE} == "yes" ]] ; then
- siface="$(select_best_interface)"
- if [[ -n ${siface} ]] ; then
- einfo "Selecting best interface: ${siface}"
- fi
- elif [[ ${cmd} == "start" ]] ; then
- siface="${iface}"
- fi
- [[ -n ${siface} ]] && apply_state "${siface}"
- else
+ if [[ ${r} != "0" ]] ; then
if [[ ${cmd} == "start" ]] ; then
# Call user-defined failup if it exists
if is_function failup ; then
@@ -938,23 +1095,6 @@ run() {
return "${r}"
}
-# void link_file(char *file)
-#
-# Move a config file from /etc to ${netdir} and creates a link if needed.
-# This enables net-scripts to control the config file for interface management
-# and allow /etc to become read only.
-link_file() {
- local file="$1"
- local link="$(readlink "/etc/${file}" 2>/dev/null)"
- if [[ ${link} != "${netdir}/${file}" ]] ; then
- if [[ -f "/etc/${file}" ]] ; then
- vewarn "Moving /etc/${file} to ${netdir}/${file} and creating link"
- mv "/etc/${file}" "${netdir}"
- ln -snf "${netdir}/${file}" "/etc/${file}"
- fi
- fi
-}
-
# bool start(void)
#
# Start entry point so that we only have one function
@@ -974,19 +1114,6 @@ start() {
fi
fi
- if [[ ! -d "${statedir}/${IFACE}" ]] ; then
- if ! mkdir -m 0755 -p "${statedir}/${IFACE}" ; then
- eerror "Unable to create state directory!"
- return 1
- fi
- fi
-
- if [[ ${RC_AUTO_INTERFACE} == "yes" ]] ; then
- link_file "resolv.conf"
- link_file "ntp.conf"
- link_file "yp.conf"
- fi
-
einfo "Starting ${IFACE}"
run "${IFACE}" start
}