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-rw-r--r--package/system/utils/usb-modeswitch/files/modeswitch.hotplug140
1 files changed, 140 insertions, 0 deletions
diff --git a/package/system/utils/usb-modeswitch/files/modeswitch.hotplug b/package/system/utils/usb-modeswitch/files/modeswitch.hotplug
new file mode 100644
index 000000000..eb71b3056
--- /dev/null
+++ b/package/system/utils/usb-modeswitch/files/modeswitch.hotplug
@@ -0,0 +1,140 @@
+#!/bin/sh
+
+local uVid uPid uMa uPr uSe
+local sVe sMo sRe
+
+local modeswitch="/usr/bin/usb_modeswitch"
+
+
+log() {
+ logger -t "usb-modeswitch" "$@"
+}
+
+sanitize() {
+ sed -e 's/[[:space:]]\+$//; s/[[:space:]]\+/_/g' "$@"
+}
+
+find_scsi_attrs() {
+ [ -n "$DEVPATH" ] && [ -d /sys/$DEVPATH/host* ] && {
+ log "$DEVICENAME is a SCSI device, waiting for it to settle..."
+ local timeout=20
+ while [ $((--timeout)) -ge 0 ]; do
+ [ -d /sys/$DEVPATH/host*/target* ] && {
+ local scsi_dir
+ for scsi_dir in /sys/$DEVPATH/host*/target*/*; do
+ [ -d "$scsi_dir" ] || break
+ case "$scsi_dir" in
+ */host*/target*/*:*:*:*)
+ sVe=$(sanitize "$scsi_dir/vendor")
+ sMo=$(sanitize "$scsi_dir/model")
+ sRe=$(sanitize "$scsi_dir/rev")
+
+ log "$DEVICENAME: Vendor=${sVe:-?} Model=${sMo:-?} Revision=${sRe:-?}"
+ return 0
+ ;;
+ esac
+ done
+ } || {
+ sleep 1
+ }
+ done
+ log "$DEVICENAME: Failed to get SCSI attributes!"
+ }
+
+ return 1
+}
+
+find_usb_attrs() {
+ local usb_dir="/sys/$DEVPATH"
+ [ -f "$usb_dir/idVendor" ] || usb_dir="${usb_dir%/*}"
+
+ uVid=$(cat "$usb_dir/idVendor")
+ uPid=$(cat "$usb_dir/idProduct")
+ uMa=$(sanitize "$usb_dir/manufacturer")
+ uPr=$(sanitize "$usb_dir/product")
+ uSe=$(sanitize "$usb_dir/serial")
+
+ log "$DEVICENAME: Manufacturer=${uMa:-?} Product=${uPr:-?} Serial=${uSe:-?}"
+}
+
+match_config_tag() {
+ local conf="$1"
+ local tag="$2"
+
+ case "${conf##*/}" in
+ *:*$tag=*)
+ local cmp; eval "cmp=\$$tag"
+ local pat="${conf#*:$tag=}"; pat="${pat%%:*}"
+ case "$cmp" in
+ *$pat*) return 0 ;;
+ *) return 1 ;;
+ esac
+ ;;
+ esac
+
+ return 0
+}
+
+match_config() {
+ local conf="$1"
+ local tag
+
+ for tag in uMa uPr uSe sVe sMo sRe; do
+ match_config_tag "$conf" "$tag" || return 1
+ done
+
+ return 0
+}
+
+
+
+if [ "$ACTION" = add ]; then
+ [ -d "/etc/usb_modeswitch.d" ] && [ -x "$modeswitch" ] && {
+ case "$DEVICENAME" in
+ *-*:*.*) : ;;
+ *) exit 0 ;;
+ esac
+
+ find_usb_attrs
+
+ local candidates=0
+ local conf configs
+ for conf in /etc/usb_modeswitch.d/$uVid:$uPid*; do
+ [ -f "$conf" ] || break
+ configs="${configs:+$configs }$conf"
+ $((candidates++))
+ done
+
+ # Found more than one candidate, read SCSI attributes and find the best match
+ [ $candidates -gt 1 ] && {
+ find_scsi_attrs
+ for conf in $configs; do
+ match_config "$conf" && {
+ configs="$conf"
+ candidates=1
+ break
+ }
+ done
+ }
+
+ # If a candidate is remaining, start usb-modeswitch
+ [ -n "$configs" ] && {
+ log "$DEVICENAME: Selecting ${configs%% *} for mode switching"
+ # ugly workaround, but working for all hw we got for testing
+ switching_done=0
+ switching_tries=0
+ local usb_dir="/sys/$DEVPATH"
+ [ -f "$usb_dir/idVendor" ] || usb_dir="${usb_dir%/*}"
+ while [ $switching_done -lt 1 -a $switching_tries -le 6 ]; do
+ $modeswitch -v $uVid -p $uPid -I -D -n -s 30 -c "${configs%% *}"
+ if [ $(sanitize "$usb_dir/idProduct") = $uPid ]; then
+ log "$DEVICENAME: Switching seemingly failed"
+ sleep 1
+ else
+ switching_done=1
+ fi
+ switching_tries=$(( $switching_tries + 1 ))
+ done
+ }
+ }
+fi