46 lines
1.2 KiB
Bash
46 lines
1.2 KiB
Bash
#!/bin/bash
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# Source: https://github.com/games-on-whales/gow/
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set -e
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function join_by { local IFS="$1"; shift; echo "$*"; }
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declare -A group_map
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for dev in "$@"; do
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# Only process $dev if it's a character device
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if [ ! -c "$dev" ]; then
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continue
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fi
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dev_group=$(stat -c "%G" "$dev")
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dev_gid=$(stat -c "%g" "$dev")
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if [ "$dev_group" = "UNKNOWN" ]; then
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new_name="user-gid-$dev_gid"
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# We only have a GID for this group; create a named group for it
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# this isn't 100% necessary but it prevents some useless noise in the console
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groupadd -g $dev_gid "$new_name"
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group_map[$new_name]=1
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else
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# the group already exists; just add it to the list
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group_map[$dev_group]=1
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fi
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done
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# uinput is usually set to be read/write only by user root, we want to allow the group too
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if [ -e /dev/uinput ]; then
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echo "Allow /dev/uinput r/w to the group"
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chmod 0660 /dev/uinput
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fi
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groups=$(join_by "," "${!group_map[@]}")
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if [ "$groups" != "" ]; then
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echo "Adding user '${USER}' to groups: $groups"
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usermod -a -G $groups ${USER}
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else
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echo "Not modifying user groups ($groups)"
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fi
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