68 lines
1.6 KiB
Bash
Executable File
68 lines
1.6 KiB
Bash
Executable File
#!@TERMUX_PREFIX@/bin/bash
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set -e -u
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export PREFIX=@TERMUX_PREFIX@
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msg() {
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echo "$*" >&2
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}
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show_usage() {
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msg
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msg "Usage: termux-restore [input file]"
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msg
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msg "Script for restoring Termux installation directory (\$PREFIX)"
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msg "from the given TAR archive."
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msg
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msg "It is expected that backup file was made by 'termux-backup'."
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msg "Restoring procedure will erase all files in \$PREFIX directory"
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msg "that are not present in the given backup file. Be careful."
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msg
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msg "Backup contents may be supplied via stdin by specifying input"
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msg "file as '-'. Note that piped TAR archive must be uncompressed."
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msg
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}
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if [ $# -lt 1 ]; then
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msg
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msg "[!] Input file path is not specified."
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show_usage
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exit 1
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fi
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if [ $# -gt 1 ]; then
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shift 1
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msg
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msg "[!] Got extra arguments: $*"
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show_usage
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exit 1
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fi
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case "$1" in
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-\?|-h|--help|--usage) show_usage; exit 0;;
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*) BACKUP_FILE_PATH=$1;;
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esac
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if [ "$BACKUP_FILE_PATH" != "-" ] && [ ! -e "$BACKUP_FILE_PATH" ]; then
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msg
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msg "[!] File '$BACKUP_FILE_PATH' does not exist."
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msg
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exit 1
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else
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if [ "$BACKUP_FILE_PATH" != "-" ] && [ ! -f "$BACKUP_FILE_PATH" ]; then
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msg
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msg "[!] Path '$BACKUP_FILE_PATH' is not a regular file."
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msg
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exit 1
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fi
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fi
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# Ensure that prefix doesn't contain read-only files.
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find "@TERMUX_PREFIX@" -type d -print0 | xargs -0 -r chmod u+rwx
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find "@TERMUX_PREFIX@" -type f -print0 | xargs -0 -r chmod u+rw
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# --recursive-unlink is added intentionally to delete all orphan/extra files
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# in $PREFIX. It must be restored to a clean state as in backup tarball.
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tar -x -C "@TERMUX_BASE_DIR@" -f "$BACKUP_FILE_PATH" \
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--recursive-unlink --preserve-permissions ./usr
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