#!/bin/sh
# $Id: rpm-salvage-lost+found,v 1.3 2008/11/19 07:01:51 friedman Exp $

# Attempt to figure out where files in lost+found originally came from by
# searching the rpm database for their md5 checksum.

lookup()
{
  while read file; do
    test -L "$file" && continue
    test -f "$file" || continue

    md5=`md5sum "$file" | cut -f1 -d' '`
    pkg=`rpm -q --qf "%{name}-%{version}-%{release}.%{arch}" --fileid "$md5"`
    case $pkg in
      'no package matches'* | '' ) continue ;;
    esac

    loc=`rpm -q --dump "$pkg" | awk '$4 == md5 { print $1 }' md5="$md5"`
    echo $md5 $file $pkg $loc
  done
}

salvage()
{
  case $# in
    0 ) lookup ;;
    1 ) if [ -d "$1" -a ! -L "$1" ]; then
          (cd "$1" && salvage *)
        else
          echo "$1" | lookup
        fi ;;
    * ) for file in "$@"; do echo "$file"; done | lookup ;;
  esac
}

main()
{
  case $1 in
    -f ) shift ;
         salvage "$@" | sort -k3,3 -k4,4 | fmtcols -N ;;
    *  ) salvage "$@" ;;
  esac
}

main "$@"

# eof