This file is indexed.

/usr/share/grub/grub-mkconfig_lib is in grub-common 2.02-2ubuntu8.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
# Helper library for grub-mkconfig
# Copyright (C) 2007,2008,2009,2010  Free Software Foundation, Inc.
#
# GRUB is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# GRUB is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GRUB.  If not, see <http://www.gnu.org/licenses/>.

prefix="/usr"
exec_prefix="/usr"
datarootdir="/usr/share"
datadir="${datarootdir}"
bindir="${exec_prefix}/bin"
sbindir="${exec_prefix}/sbin"
if [ "x$pkgdatadir" = x ]; then
    pkgdatadir="${datadir}/grub"
fi

if test "x$grub_probe" = x; then
  grub_probe="${sbindir}/grub-probe"
fi
if test "x$grub_file" = x; then
  grub_file="${bindir}/grub-file"
fi
if test "x$grub_mkrelpath" = x; then
  grub_mkrelpath="${bindir}/grub-mkrelpath"
fi

if which gettext >/dev/null 2>/dev/null; then
  :
else
  gettext () {
     printf "%s" "$@"
  }
fi

grub_warn ()
{
  echo "$(gettext "Warning:")" "$@" >&2
}

make_system_path_relative_to_its_root ()
{
  "${grub_mkrelpath}" "$1"
}

is_path_readable_by_grub ()
{
  path="$1"

  # abort if path doesn't exist
  if test -e "$path" ; then : ;else
    return 1
  fi

  # abort if file is in a filesystem we can't read
  if "${grub_probe}" -t fs "$path" > /dev/null 2>&1 ; then : ; else
    return 1
  fi

  # ... or if we can't figure out the abstraction module, for example if
  # memberlist fails on an LVM volume group.
  if abstractions="`"${grub_probe}" -t abstraction "$path"`" 2> /dev/null ; then 
      :
  else
    return 1
  fi

  if [ x$GRUB_ENABLE_CRYPTODISK = xy ]; then
      return 0
  fi
  
  for abstraction in $abstractions; do
      if [ "x$abstraction" = xcryptodisk ]; then
	  return 1
      fi
  done

  return 0
}

convert_system_path_to_grub_path ()
{
  path="$1"

  grub_warn "convert_system_path_to_grub_path() is deprecated.  Use prepare_grub_to_access_device() instead."

  # abort if GRUB can't access the path
  if is_path_readable_by_grub "${path}" ; then : ; else
    return 1
  fi

  if drive="`"${grub_probe}" -t drive "$path"`" ; then : ; else
    return 1
  fi

  if relative_path="`make_system_path_relative_to_its_root "$path"`" ; then : ; else
    return 1
  fi

  echo "${drive}${relative_path}"
}

save_default_entry ()
{
  if [ "x${GRUB_SAVEDEFAULT}" = "xtrue" ] ; then
    cat << EOF
savedefault
EOF
  fi
}

prepare_grub_to_access_device ()
{
  old_ifs="$IFS"
  IFS='
'
  partmap="`"${grub_probe}" --device $@ --target=partmap`"
  for module in ${partmap} ; do
    case "${module}" in
      netbsd | openbsd)
        echo "insmod part_bsd";;
      *)
        echo "insmod part_${module}";;
    esac
  done

  loop_file=
  case $1 in
    /dev/loop/*|/dev/loop[0-9])
      grub_loop_device="${1#/dev/}"
      loop_file=`losetup "$1" | sed -e "s/^[^(]*(\([^)]\+\)).*/\1/"`
      case $loop_file in
        /dev/*) ;;
        *)
          loop_device="$1"
          shift
          set -- `"${grub_probe}" --target=device "${loop_file}"` "$@" || return 0
        ;;
      esac
    ;;
  esac

  # Abstraction modules aren't auto-loaded.
  abstraction="`"${grub_probe}" --device $@ --target=abstraction`"
  for module in ${abstraction} ; do
    echo "insmod ${module}"
  done

  fs="`"${grub_probe}" --device $@ --target=fs`"
  for module in ${fs} ; do
    echo "insmod ${module}"
  done

  if [ x$GRUB_ENABLE_CRYPTODISK = xy ]; then
      for uuid in `"${grub_probe}" --device $@ --target=cryptodisk_uuid`; do
	  echo "cryptomount -u $uuid"
      done
  fi

  # If there's a filesystem UUID that GRUB is capable of identifying, use it;
  # otherwise set root as per value in device.map.
  fs_hint="`"${grub_probe}" --device $@ --target=compatibility_hint`"
  if [ "x$fs_hint" != x ]; then
    echo "set root='$fs_hint'"
  fi
  if fs_uuid="`"${grub_probe}" --device $@ --target=fs_uuid 2> /dev/null`" ; then
    hints="`"${grub_probe}" --device $@ --target=hints_string 2> /dev/null`" || hints=
    echo "if [ x\$feature_platform_search_hint = xy ]; then"
    echo "  search --no-floppy --fs-uuid --set=root ${hints} ${fs_uuid}"
    echo "else"
    echo "  search --no-floppy --fs-uuid --set=root ${fs_uuid}"
    echo "fi"
  fi
  IFS="$old_ifs"

  if [ "x${loop_file}" != x ]; then
    loop_mountpoint="$(awk '"'${loop_file}'" ~ "^"$2 && $2 != "/" { print $2 }' /proc/mounts | tail -n1)"
    if [ "x${loop_mountpoint}" != x ]; then
      echo "loopback ${grub_loop_device} ${loop_file#$loop_mountpoint}"
      echo "set root=(${grub_loop_device})"
    fi
  fi
}

grub_get_device_id ()
{
  old_ifs="$IFS"
  IFS='
'
  device="$1"
  if fs_uuid="`"${grub_probe}" --device ${device} --target=fs_uuid 2> /dev/null`" ; then
    echo "$fs_uuid";
  else
    echo $device |sed 's, ,_,g'
  fi
  IFS="$old_ifs"
}

grub_file_is_not_garbage ()
{
  if test -f "$1" ; then
    case "$1" in
      *.dpkg-*) return 1 ;; # debian dpkg
      *.rpmsave|*.rpmnew) return 1 ;;
      README*|*/README*)  return 1 ;; # documentation
    esac
  else
    return 1
  fi
  return 0
}

version_sort ()
{
  case $version_sort_sort_has_v in
    yes)
      LC_ALL=C sort -V;;
    no)
      LC_ALL=C sort -n;;
    *)
      if sort -V </dev/null > /dev/null 2>&1; then
        version_sort_sort_has_v=yes
	LC_ALL=C sort -V
      else
        version_sort_sort_has_v=no
        LC_ALL=C sort -n
      fi;;
   esac
}

version_test_numeric ()
{
  version_test_numeric_a="$1"
  version_test_numeric_cmp="$2"
  version_test_numeric_b="$3"
  if [ "$version_test_numeric_a" = "$version_test_numeric_b" ] ; then
    case "$version_test_numeric_cmp" in
      ge|eq|le) return 0 ;;
      gt|lt) return 1 ;;
    esac
  fi
  if [ "$version_test_numeric_cmp" = "lt" ] ; then
    version_test_numeric_c="$version_test_numeric_a"
    version_test_numeric_a="$version_test_numeric_b"
    version_test_numeric_b="$version_test_numeric_c"
  fi
  if (echo "$version_test_numeric_a" ; echo "$version_test_numeric_b") | version_sort | head -n 1 | grep -qx "$version_test_numeric_b" ; then
    return 0
  else
    return 1
  fi
}

version_test_gt ()
{
  version_test_gt_sedexp="s/[^-]*-//;s/[._-]\(pre\|rc\|test\|git\|old\|trunk\)/~\1/g"
  version_test_gt_a="`echo "$1" | sed -e "$version_test_gt_sedexp"`"
  version_test_gt_b="`echo "$2" | sed -e "$version_test_gt_sedexp"`"
  version_test_gt_cmp=gt
  if [ "x$version_test_gt_b" = "x" ] ; then
    return 0
  fi
  case "$version_test_gt_a:$version_test_gt_b" in
    *.old:*.old) ;;
    *.old:*) version_test_gt_a="`echo "$version_test_gt_a" | sed -e 's/\.old$//'`" ; version_test_gt_cmp=gt ;;
    *:*.old) version_test_gt_b="`echo "$version_test_gt_b" | sed -e 's/\.old$//'`" ; version_test_gt_cmp=ge ;;
  esac
  dpkg --compare-versions "$version_test_gt_a" "$version_test_gt_cmp" "$version_test_gt_b"
  return "$?"
}

version_find_latest ()
{
  version_find_latest_a=""
  for i in "$@" ; do
    if version_test_gt "$i" "$version_find_latest_a" ; then
      version_find_latest_a="$i"
    fi
  done
  echo "$version_find_latest_a"
}

# One layer of quotation is eaten by "" and the second by sed; so this turns
# ' into \'.
grub_quote () {
  sed "s/'/'\\\\''/g"
}

gettext_quoted () {
  gettext "$@" | grub_quote
}

# Run the first argument through gettext, and then pass that and all
# remaining arguments to printf.  This is a useful abbreviation and tends to
# be easier to type.
gettext_printf () {
  gettext_printf_format="$1"
  shift
  printf "$(gettext "$gettext_printf_format")" "$@"
}

uses_abstraction () {
  device="$1"
  old_ifs="$IFS"
  IFS='
'

  abstraction="`"${grub_probe}" --device ${device} --target=abstraction`"
  for module in ${abstraction}; do
    if test "x${module}" = "x$2"; then
      IFS="$old_ifs"
      return 0
    fi
  done
  IFS="$old_ifs"
  return 1
}

print_option_help () {
  if test x$print_option_help_wc = x; then
      if wc -L  </dev/null > /dev/null 2>&1; then
	  print_option_help_wc=-L
      elif wc -m  </dev/null > /dev/null 2>&1; then
	  print_option_help_wc=-m
      else
	  print_option_help_wc=-b
      fi
  fi
  if test x$grub_have_fmt = x; then
      if fmt -w 40  </dev/null > /dev/null 2>&1; then
	  grub_have_fmt=y;
      else
	  grub_have_fmt=n;
      fi
  fi
  print_option_help_lead="  $1"
  print_option_help_lspace="$(echo "$print_option_help_lead" | wc $print_option_help_wc)"
  print_option_help_fill="$((26 - print_option_help_lspace))"
  printf "%s" "$print_option_help_lead"
  if test $print_option_help_fill -le 0; then
      print_option_help_nl=y
      echo
  else
      print_option_help_i=0;
      while test $print_option_help_i -lt $print_option_help_fill; do
      printf " "
	  print_option_help_i=$((print_option_help_i+1))
      done
      print_option_help_nl=n
  fi
  if test x$grub_have_fmt = xy; then
      print_option_help_split="$(echo "$2" | fmt -w 50)"
  else
      print_option_help_split="$2"
  fi
  if test x$print_option_help_nl = xy; then
      echo "$print_option_help_split" | awk \
	  '{ print "                          " $0; }'
  else
      echo "$print_option_help_split" | awk 'BEGIN   { n = 0 }
  { if (n == 1) print "                          " $0; else print $0; n = 1 ; }'
  fi
}

grub_fmt () {
  if test x$grub_have_fmt = x; then
      if fmt -w 40 < /dev/null > /dev/null; then
	  grub_have_fmt=y;
      else
	  grub_have_fmt=n;
      fi
  fi

  if test x$grub_have_fmt = xy; then
      fmt
  else
      cat
  fi
}

grub_tab="	"

grub_add_tab () {
  sed -e "s/^/$grub_tab/"
}