##/bin/bash # SPDX-License-Identifier: GPL-2.0 # Copyright (c) 2014 Miklos Szeredi. All Rights Reserved. # # renameat2 helpers # Setup source or dest # _setup_one() { local path=$1 local type=$2 case $type in none) ;; regu) echo foo > $path;; symb) ln -s foo $path;; dire) mkdir $path;; tree) mkdir $path; echo foo > $path/bar;; esac } # # Cleanup source or dest # _cleanup_one() { local path=$1 if test -d $path; then rm -f $path/bar rmdir $path else rm -f $path fi } # # Check type of source or destination # _showtype_one() { local path=$1 if test -e $path -o -h $path; then if test -d $path -a -e $path/bar; then echo -n "tree" else echo -n `stat -c %F $path | cut -b-4` fi else echo -n "none" fi } # # This runs renameat2 on all combinations of source and dest # _rename_tests_source_dest() { local source=$1 local dest=$2 local options=$3 for stype in none regu symb dire tree; do for dtype in none regu symb dire tree; do echo -n "$options $stype/$dtype -> " _setup_one $source $stype _setup_one $dest $dtype $here/src/renameat2 $source $dest $flags if test $? == 0; then _showtype_one $source echo -n "/" _showtype_one $dest echo "." fi _cleanup_one $source _cleanup_one $dest done done } # # This runs _rename_tests_source_dest() for both same-directory and # cross-directory renames # _rename_tests() { local testdir=$1 local flags=$2 #same directory renames _rename_tests_source_dest $testdir/src $testdir/dst "samedir " #cross directory renames mkdir $testdir/x $testdir/y _rename_tests_source_dest $testdir/x/src $testdir/y/dst "crossdir" rmdir $testdir/x $testdir/y } # # This checks whether the renameat2 syscall is supported # _require_renameat2() { local flags=$1 local rename_dir=$TEST_DIR/$$ local cmd="" if test ! -x $here/src/renameat2; then _notrun "renameat2 binary not found" fi mkdir $rename_dir touch $rename_dir/foo case $flags in "noreplace") cmd="-n $rename_dir/foo $rename_dir/bar" ;; "exchange") touch $rename_dir/bar cmd="-x $rename_dir/foo $rename_dir/bar" ;; "whiteout") touch $rename_dir/bar cmd="-w $rename_dir/foo $rename_dir/bar" ;; "") cmd="" ;; *) rm -rf $rename_dir _fail "_require_renameat2: only support noreplace,exchange,whiteout rename flags" ;; esac if ! $here/src/renameat2 -t $cmd; then rm -rf $rename_dir _notrun "kernel doesn't support renameat2 syscall" fi rm -rf $rename_dir }