Felix Förtsch
1ece944a45
Share one Steam game library across multiple Linux users with fully isolated Proton prefixes. Uses bubblewrap to create a per-user kernel overlay on /opt/steam/steamapps/compatdata/ so game files stay shared while Proton prefixes are isolated per user, with no compatibility tool selection or per-game configuration required. Includes: - steam-shared launcher that sets up the per-user overlay and execs Steam inside a bwrap mount namespace - activate/uninstall scripts plus an add-user helper for steamshare group membership - permission watcher (steam-fix-perms.path/.service) to keep ACLs correct under pressure-vessel's restrictive mode bits - .desktop override that routes the system Steam launcher through steam-shared - Nix flake exposing activate, uninstall, and add-user packages - design doc and implementation plan covering the approach
27 lines
1003 B
Bash
Executable File
27 lines
1003 B
Bash
Executable File
#!/usr/bin/env bash
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# fix-perms.sh — fix permissions on the shared Steam library
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# Called by systemd path unit when pressure-vessel creates dirs with
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# restrictive permissions. Also safe to run manually.
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set -uo pipefail
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STEAM_DIR="/opt/steam"
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STEAM_GROUP="steamshare"
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# fix dirs missing group rwx (pressure-vessel tmp-*, var/, etc.)
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find "$STEAM_DIR/steamapps" -type d ! -perm -g+rwx -exec chmod 2775 {} +
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# fix files missing group rw
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find "$STEAM_DIR/steamapps" -type f ! -perm -g+rw -exec chmod g+rw {} +
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# restore execute bits on ELF binaries and shebang scripts
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find "$STEAM_DIR/steamapps" -type f ! -perm -a+x -exec sh -c '
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for f; do
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head -c4 "$f" 2>/dev/null | grep -qP "^\x7fELF|^#!" && chmod a+x "$f"
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done
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' _ {} +
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# fix group ownership (skip broken symlinks)
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find "$STEAM_DIR/steamapps" -not -type l ! -group "$STEAM_GROUP" -exec chown root:"$STEAM_GROUP" {} +
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find "$STEAM_DIR/steamapps" -type l ! -group "$STEAM_GROUP" -exec chown -h root:"$STEAM_GROUP" {} + 2>/dev/null || true
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