Make mktemp invocations portable.

tests/grub_script_blockarg.in

@@ -27,7 +27,7 @@ cmd='test_blockarg { true }'
 v=`echo "$cmd" | @builddir@/grub-shell`
 error_if_not "$v" '{ true }'
 
-tmp=`mktemp`
+tmp=`mktemp "${TMPDIR:-/tmp}/tmp.XXXXXXXXXX"` || exit 1
 cmd='test_blockarg { test_blockarg { true } }'
 echo "$cmd" | @builddir@/grub-shell >$tmp
 error_if_not "`head -n1 $tmp|tail -n1`" '{ test_blockarg { true } }'

tests/partmap_test.in

@@ -51,8 +51,8 @@ list_parts () {
     echo
 }
 
-imgfile=`mktemp`
-outfile=`mktemp`
+imgfile=`mktemp "${TMPDIR:-/tmp}/tmp.XXXXXXXXXX"` || exit 1
+outfile=`mktemp "${TMPDIR:-/tmp}/tmp.XXXXXXXXXX"` || exit 1
 
 #
 # MSDOS partition types

tests/util/grub-shell-tester.in

@@ -83,17 +83,17 @@ for option in "$@"; do
 done
 
 if [ "x${source}" = x ] ; then
-  tmpfile=`mktemp`
+  tmpfile=`mktemp "${TMPDIR:-/tmp}/tmp.XXXXXXXXXX"` || exit 1
   while read REPLY; do
     echo $REPLY >> ${tmpfile}
   done
   source=${tmpfile}
 fi
 
-outfile1=`mktemp`
+outfile1=`mktemp "${TMPDIR:-/tmp}/tmp.XXXXXXXXXX"` || exit 1
 @builddir@/grub-shell --qemu-opts="${qemuopts}" --modules=${modules} ${source} >${outfile1}
 
-outfile2=`mktemp`
+outfile2=`mktemp "${TMPDIR:-/tmp}/tmp.XXXXXXXXXX"` || exit 1
 bash ${source} >${outfile2}
 
 if ! diff -q ${outfile1} ${outfile2} >/dev/null

tests/util/grub-shell.in

@@ -107,14 +107,14 @@ for option in "$@"; do
 done
 
 if [ "x${source}" = x ] ; then
-    tmpfile=`mktemp`
+    tmpfile=`mktemp "${TMPDIR:-/tmp}/tmp.XXXXXXXXXX"` || exit 1
     while read REPLY; do
 	echo "$REPLY" >> ${tmpfile}
     done
     source=${tmpfile}
 fi
 
-cfgfile=`mktemp`
+cfgfile=`mktemp "${TMPDIR:-/tmp}/tmp.XXXXXXXXXX"` || exit 1
 cat <<EOF >${cfgfile}
 grubshell=yes
 insmod serial
@@ -123,7 +123,7 @@ terminal_input serial
 terminal_output serial
 EOF
 
-rom_directory=`mktemp -d`
+rom_directory=`mktemp -d "${TMPDIR:-/tmp}/tmp.XXXXXXXXXX"` || exit 1
 
 for mod in ${modules}
 do
@@ -135,7 +135,7 @@ source /boot/grub/testcase.cfg
 halt
 EOF
 
-isofile=`mktemp`
+isofile=`mktemp "${TMPDIR:-/tmp}/tmp.XXXXXXXXXX"` || exit 1
 if [ x$boot != xnet ]; then
     sh @builddir@/grub-mkrescue --grub-mkimage=${builddir}/grub-mkimage --output=${isofile} --override-directory=${builddir}/grub-core \
 	--rom-directory="${rom_directory}" \
@@ -161,7 +161,7 @@ if [ x$boot = xqemu ]; then
 fi
 
 if [ x$boot = xcoreboot ]; then
-    imgfile=`mktemp`
+    imgfile=`mktemp "${TMPDIR:-/tmp}/tmp.XXXXXXXXXX"` || exit 1
     cp "${GRUB_COREBOOT_ROM}" "${imgfile}"
     "${GRUB_CBFSTOOL}" "${imgfile}" add-payload "${rom_directory}/coreboot.elf" fallback/payload
     bootdev="-bios ${imgfile}"
@@ -169,7 +169,7 @@ if [ x$boot = xcoreboot ]; then
 fi
 
 if [ x$boot = xnet ]; then
-    netdir=`mktemp -d`
+    netdir=`mktemp -d "${TMPDIR:-/tmp}/tmp.XXXXXXXXXX"` || exit 1
     sh @builddir@/grub-mknetdir --grub-mkimage=${builddir}/grub-mkimage --override-directory=${builddir}/grub-core --net-directory=$netdir
     cp ${cfgfile} $netdir/boot/grub/grub.cfg
     cp ${source} $netdir/boot/grub/testcase.cfg