73 lines
1.6 KiB
Plaintext
73 lines
1.6 KiB
Plaintext
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#!/bin/sh
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MODULES="dahdi"
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DAHDI_MODULES_FILE="/etc/dahdi/modules"
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usage() {
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cat <<EOF
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$0: loads / unloads DAHDI kernel modules
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Usage: $0 <load|unload>
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* load: Loads all modules listed in /etc/dahdi/modules (one per line)
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* unload: Unloads the DAHDI modules (all the modules that are dependencies
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of $MODULES).
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EOF
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}
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# recursively unload a module and its dependencies, if possible.
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# where's modprobe -r when you need it?
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# inputs: module to unload.
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# returns: the result from
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unload_module() {
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module="$1"
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line=`lsmod 2>/dev/null | grep "^$1 "`
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if [ "$line" = '' ]; then return; fi # module was not loaded
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set -- $line
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# $1: the original module, $2: size, $3: refcount, $4: deps list
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mods=`echo $4 | tr , ' '`
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ec_modules=""
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# xpp_usb keeps the xpds below busy if an xpp hardware is
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# connected. Hence must be removed before them:
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case "$module" in xpd_*) mods="xpp_usb $mods";; esac
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for mod in $mods; do
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case "$mod" in
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dahdi_echocan_*)
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ec_modules="$mod $ec_modules"
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;;
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*)
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# run in a subshell, so it won't step over our vars:
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(unload_module $mod)
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;;
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esac
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done
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# Now that all the other dependencies are unloaded, we can unload the
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# dahdi_echocan modules. The drivers that register spans may keep
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# references on the echocan modules before they are unloaded.
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for mod in $ec_modules; do
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(unload_module $mod)
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done
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rmmod $module
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}
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unload_modules() {
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for module in "$@"; do
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unload_module $module
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done
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}
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load_modules() {
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modules=`sed -e 's/#.*$//' $DAHDI_MODULES_FILE 2>/dev/null`
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for line in $modules; do
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modprobe $line
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done
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}
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case "$1" in
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load) load_modules "$@";;
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unload) unload_modules $MODULES;;
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*) usage;;
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esac
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