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Thatchapon Unprasert
90 lines
2.4 KiB
Bash
Executable File
90 lines
2.4 KiB
Bash
Executable File
#!/bin/bash
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# EXPERIMENTAL script
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# Based on https://github.com/EthanArbuckle/Tmpfs-Overlay
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# This tool needs to be run with sudo. It may need to be given Full Disk Access or Developer Tools permissions.
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# Function to mount tmpfs to the target directory
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mount_tmpfs_to_target_dir() {
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local target_dir_path="$1"
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if sudo mount_tmpfs "$target_dir_path"; then
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return 0 # success
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else
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echo "An error occurred while mounting tmpfs onto $target_dir_path"
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return 1
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fi
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}
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# Function to check if tmpfs is mounted on the target directory
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tmpfs_mounted_on_directory() {
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local target_dir_path="$1"
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mount_output=$(mount)
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if echo "$mount_output" | grep -q "tmpfs on $target_dir_path"; then
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return 0
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else
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return 1
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fi
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}
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# Function to set up an overlay on the target directory
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setup_overlay_on_directory() {
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local target_dir_path="$1"
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if [ ! -d "$target_dir_path" ]; then
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echo "Cannot set up overlay on non-existent directory: $target_dir_path"
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return 1
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fi
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if tmpfs_mounted_on_directory "$target_dir_path"; then
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echo "tmpfs is already mounted on $target_dir_path"
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return 0 # success (no need to mount again)
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fi
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# Create a temporary directory to copy contents to
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temp_dir=$(mktemp -d -p /tmp)
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if [ ! -d "$temp_dir" ]; then
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echo "Failed to create temporary directory"
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return 1
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fi
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echo "Created temporary directory: $temp_dir"
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# Copy contents of the target directory to the temporary directory
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echo "Copying contents of $target_dir_path to temporary directory"
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rsync -a "$target_dir_path"/ "$temp_dir"/
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# Create a tmpfs mount at the target directory
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if ! mount_tmpfs_to_target_dir "$target_dir_path"; then
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return 1
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fi
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# Move the contents of the temporary directory back to the tmpfs mount
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echo "Moving contents back to $target_dir_path"
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sudo rsync -a --exclude='*fsevent*' "$temp_dir"/ "$target_dir_path"/
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# Clean up the temporary directory
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rm -rf "$temp_dir"
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return 0
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}
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# Main script execution
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if [ $# -lt 1 ]; then
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echo "Usage: $0 <path>"
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exit 1
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fi
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input_path="$1"
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if [ ! -d "$input_path" ]; then
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echo "Error: $input_path does not exist"
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exit 1
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fi
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if ! setup_overlay_on_directory "$input_path"; then
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echo "Failed to set up overlay on directory $input_path"
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exit 1
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fi
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echo "Successfully set up overlay on directory $input_path"
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