64 lines
1.4 KiB
Nix
64 lines
1.4 KiB
Nix
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{ writeShellScriptBin }:
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writeShellScriptBin "request-usb" ''
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set -euo pipefail
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parseArgs() {
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N_CONSTRAINTS=0
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while [[ -n "''${1:-}" ]]; do
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local x=
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case "$1" in
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"--manufacturer" )
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N_CONSTRAINTS=$(( $N_CONSTRAINTS + 1 ))
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MANUFACTURER="$2"
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shift 2
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;;
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"--manufacturer="* )
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N_CONSTRAINTS=$(( $N_CONSTRAINTS + 1 ))
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MANUFACTURER=''${1#--manufacturer=}
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shift 1
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;;
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"--" )
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break
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;;
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*)
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printUsage
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;;
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esac
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done
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}
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printUsage() {
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echo "$(caller)" >&2
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echo "Usage: request-usb [--manufacturer=MANUFACTURER]" >&2
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exit 1
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}
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findFirst() {
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local d=
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[[ ''${N_CONSTRAINTS:-0} != 0 ]] || printUsage
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for d in /sys/bus/usb/devices/* ; do
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[[ -e "$d/manufacturer" ]] || continue
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[[ -e "$d/uevent" ]] || continue
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read -r x < "$d/manufacturer"
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if ! [[ -z "''${MANUFACTURER:-}" || "$MANUFACTURER" = "$x" ]] ; then
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continue
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fi
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# NOTE: Other predicates here
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# ...
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echo -n "$d"
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return
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done
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return 1
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}
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parseArgs $@
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d=$(findFirst)
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export $( cat "$d/uevent" )
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sudo chown "$USER" /dev/bus/usb/"$BUSNUM"/"$DEVNUM"
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echo -n /dev/bus/usb/"$BUSNUM"/"$DEVNUM"
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''
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