linux-boot-prober

   1 #!/bin/sh
   2 . /usr/share/os-prober/common.sh
   3
   4 set -e
   5
   6 newns "$@"
   7 require_tmpdir
   8
   9 grep "^/dev/" /proc/mounts | parse_proc_mounts >"$OS_PROBER_TMP/mounted-map" || true
  10
  11 partition="$1"
  12
  13 if [ -z "$partition" ]; then
  14         echo "usage: linux-boot-prober partition" >&2
  15         exit 1
  16 fi
  17
  18 if ! mapped="$(mapdevfs "$partition")"; then
  19         log "Device '$partition' does not exist; skipping"
  20         continue
  21 fi
  22
  23 if ! grep -q "^$mapped " "$OS_PROBER_TMP/mounted-map"; then
  24         for test in /usr/lib/linux-boot-probes/*; do
  25                 debug "running $test"
  26                 if [ -x $test ] && [ -f $test ]; then
  27                         if $test "$partition"; then
  28                                 debug "linux detected by $test"
  29                                 break
  30                         fi
  31                 fi
  32         done
  33 else
  34         mpoint=$(grep "^$mapped " "$OS_PROBER_TMP/mounted-map" | head -n1 | cut -d " " -f 2)
  35         mpoint="$(unescape_mount "$mpoint")"
  36         if [ "$mpoint" != "/target/boot" ] && [ "$mpoint" != "/target" ] && [ "$mpoint" != "/" ]; then
  37                 type=$(grep "^$mapped " "$OS_PROBER_TMP/mounted-map" | head -n1 | cut -d " " -f 3)
  38                 if ! grep -q " $mpoint/boot " "$OS_PROBER_TMP/mounted-map"; then
  39                         linux_mount_boot "$partition" "$mpoint"
  40                         bootpart="${mountboot%% *}"
  41                         bootmounted="${mountboot#* }"
  42                 else
  43                         bootpart="$partition"
  44                         bootmounted=0
  45                 fi
  46                 for test in /usr/lib/linux-boot-probes/mounted/*; do
  47                         if [ -f $test ] && [ -x $test ]; then
  48                                 debug "running $test on mounted $partition"
  49                                 if $test "$partition" "$bootpart" "$mpoint" "$type"; then
  50                                         debug "$test succeeded"
  51                                         break
  52                                 fi
  53                         fi
  54                 done
  55                 if [ "$bootmounted" = 1 ]; then
  56                         if ! umount "$mpoint/boot"; then
  57                                 warn "failed to umount $mpoint/boot"
  58                         fi
  59                 fi
  60         fi
  61 fi