tests/other-fs-tmpdir

   1 #!/bin/sh
   2
   3 # Use stat to find a writable directory on a file system different from that
   4 # of the current directory.  If one is found, create a temporary directory
   5 # inside it.
   6
   7 # Copyright (C) 1998-2023 Free Software Foundation, Inc.
   8
   9 # This program is free software: you can redistribute it and/or modify
  10 # it under the terms of the GNU General Public License as published by
  11 # the Free Software Foundation, either version 3 of the License, or
  12 # (at your option) any later version.
  13
  14 # This program is distributed in the hope that it will be useful,
  15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 # GNU General Public License for more details.
  18
  19 # You should have received a copy of the GNU General Public License
  20 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
  21
  22 test "${CANDIDATE_TMP_DIRS+set}" = set \
  23   || CANDIDATE_TMP_DIRS="$TMPDIR /tmp /dev/shm /var/tmp /usr/tmp $HOME"
  24
  25 other_partition_tmpdir=
  26
  27 dot_mount_point=$(stat -c %d .)
  28 for d in $CANDIDATE_TMP_DIRS; do
  29
  30   # Skip nonexistent directories.
  31   test -d "$d" || continue
  32
  33   d_mount_point=$(stat -L -c %d "$d")
  34
  35   # Same partition?  Skip it.
  36   test "x$d_mount_point" = "x$dot_mount_point" && continue
  37
  38   # See if we can create a directory in it.
  39   if mkdir "$d/tmp$$" > /dev/null 2>&1; then
  40     other_partition_tmpdir="$d/tmp$$"
  41     break
  42   fi
  43
  44 done
  45
  46 if test -z "$other_partition_tmpdir"; then
  47   skip_ \
  48 "requires a writable directory on a different file system,
  49 and I couldn't find one.  I tried these:
  50   $CANDIDATE_TMP_DIRS
  51 Set your environment variable CANDIDATE_TMP_DIRS to make
  52 this test use a different list."
  53 fi
  54
  55 test "$VERBOSE" = yes && set -x