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|
#!/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
|
