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#!/bin/sh
# Use stat to find a writable directory on a file system different from that
# of the current directory. If one is found, create a temporary directory
# inside it.
# Copyright (C) 1998-2022 Free Software Foundation, Inc.
# This program 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.
# This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
test "${CANDIDATE_TMP_DIRS+set}" = set \
|| CANDIDATE_TMP_DIRS="$TMPDIR /tmp /dev/shm /var/tmp /usr/tmp $HOME"
other_partition_tmpdir=
dot_mount_point=$(stat -c %d .)
for d in $CANDIDATE_TMP_DIRS; do
# Skip nonexistent directories.
test -d "$d" || continue
d_mount_point=$(stat -L -c %d "$d")
# Same partition? Skip it.
test "x$d_mount_point" = "x$dot_mount_point" && continue
# See if we can create a directory in it.
if mkdir "$d/tmp$$" > /dev/null 2>&1; then
other_partition_tmpdir="$d/tmp$$"
break
fi
done
if test -z "$other_partition_tmpdir"; then
skip_ \
"requires a writable directory on a different file system,
and I couldn't find one. I tried these:
$CANDIDATE_TMP_DIRS
Set your environment variable CANDIDATE_TMP_DIRS to make
this test use a different list."
fi
test "$VERBOSE" = yes && set -x
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