928d5af54c
Complete Linux backup manager with Whiptail TUI and CLI interface. Adapted from gniza4cp (cPanel backup tool) with target/profile-based system replacing cPanel-specific features. - 14 core engine modules (backup, restore, targets, remotes, transfer, etc.) - 11 Whiptail TUI screens (full CRUD for targets/remotes/schedules) - CLI entrypoint with subcommands for scripting/cron - Support for SSH, local, S3, and Google Drive remotes - rsync --link-dest incremental snapshots - Root and user mode (XDG paths) - 70 passing tests - Config templates, installer, uninstaller Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
32 lines
823 B
Bash
32 lines
823 B
Bash
#!/usr/bin/env bash
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# gniza4linux/lib/locking.sh — flock-based concurrency control
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[[ -n "${_GNIZA4LINUX_LOCKING_LOADED:-}" ]] && return 0
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_GNIZA4LINUX_LOCKING_LOADED=1
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declare -g LOCK_FD=""
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acquire_lock() {
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local lock_file="${LOCK_FILE:-/var/run/gniza.lock}"
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local lock_dir; lock_dir=$(dirname "$lock_file")
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mkdir -p "$lock_dir" || die "Cannot create lock directory: $lock_dir"
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exec {LOCK_FD}>"$lock_file"
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if ! flock -n "$LOCK_FD"; then
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die "Another gniza process is running (lock: $lock_file)" "$EXIT_LOCKED"
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fi
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echo $$ >&"$LOCK_FD"
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log_debug "Lock acquired: $lock_file (PID $$)"
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}
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release_lock() {
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if [[ -n "$LOCK_FD" ]]; then
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flock -u "$LOCK_FD" 2>/dev/null
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exec {LOCK_FD}>&- 2>/dev/null
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LOCK_FD=""
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log_debug "Lock released"
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fi
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}
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