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tmux-persist: add single-user restore mode (restore [user])
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The web-terminal will get a "Restore sessions" button (common ask after an
OOM kills a user's tmux server without a reboot, which the boot-only restore
service doesn't catch). The button needs to restore ONE user's saved sessions
on demand, so teach `restore` an optional <user> argument: with no arg it
restores every terminal user (unchanged — the boot service path), with a
<user> arg it validates the name against /etc/ttyd-user-map and restores only
that user. Reuses the existing restore loop (single source of restore truth).

The terminal-lobby tmux-api will invoke this as root via a validated
tmux-restore-user sudo wrapper. Verified: bad user exits 2 (won't fall back to
restoring everyone), no-arg path unchanged, shellcheck clean.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Viktor Barzin 2026-06-10 21:08:57 +00:00
parent b5c6639272
commit ecef09ab87
1 changed files with 11 additions and 3 deletions
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14
scripts/tmux-persist.sh
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@ -100,8 +100,16 @@ save() {
}
restore() {
local u f sess cwd uuid cmd
local only="${1:-}" u f sess cwd uuid cmd
# Optional single-user restore: `tmux-persist restore <user>` limits the
# action to one terminal user (the web-UI restore button calls this via the
# tmux-restore-user wrapper). No arg => restore every user (the boot service).
if [[ -n "$only" ]] && ! users | grep -qxF "$only"; then
echo "[tmux-persist] restore: '$only' is not a known terminal user" >&2
return 2
fi
for u in $(users); do
[[ -z "$only" || "$u" == "$only" ]] || continue
f="$STATE_DIR/$u.tsv"
[[ -s "$f" ]] || continue
while IFS=$'\t' read -r sess cwd uuid; do
@ -122,6 +130,6 @@ restore() {
case "$MODE" in
save) save ;;
restore) restore ;;
*) echo "usage: tmux-persist save|restore" >&2; exit 1 ;;
restore) restore "${2:-}" ;;
*) echo "usage: tmux-persist save | restore [user]" >&2; exit 1 ;;
esac