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https://github.com/linux-apfs/apfstests.git
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common: add infrastructure for renameat2 syscall tests
The renameat2() syscall was merged into 3.15-rc (merge commit: 7df934526c0b). This adds the shared infrastructure for the actual test scripts. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
This commit is contained in:
Miklos Szeredi
committed by
Dave Chinner
Dave Chinner
parent
a0e2d8ecc0
commit
413f501b53
@@ -106,6 +106,7 @@
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/src/aio-dio-regress/aio-io-setup-with-nonwritable-context-pointer
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/src/aio-dio-regress/aiodio_sparse2
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/src/cloner
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/src/renameat2
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# dmapi/ binaries
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/dmapi/src/common/cmd/read_invis
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@@ -0,0 +1,129 @@
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######
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#
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# renameat2 helpers
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2014 Miklos Szeredi. All Rights Reserved.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it would be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write the Free Software Foundation,
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# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#-----------------------------------------------------------------------
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#
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#
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# Setup source or dest
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#
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_setup_one()
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{
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local path=$1
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local type=$2
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case $type in
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none) ;;
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regu) echo foo > $path;;
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symb) ln -s foo $path;;
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dire) mkdir $path;;
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tree) mkdir $path; echo foo > $path/bar;;
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esac
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}
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#
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# Cleanup source or dest
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#
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_cleanup_one()
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{
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local path=$1
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if test -d $path; then
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rm -f $path/bar
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rmdir $path
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else
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rm -f $path
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fi
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}
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#
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# Check type of source or destination
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#
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_showtype_one()
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{
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local path=$1
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if test -e $path -o -h $path; then
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if test -d $path -a -e $path/bar; then
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echo -n "tree"
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else
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echo -n `stat -c %F $path | cut -b-4`
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fi
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else
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echo -n "none"
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fi
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}
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#
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# This runs renameat2 on all combinations of source and dest
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#
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_rename_tests_source_dest()
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{
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local source=$1
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local dest=$2
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local options=$3
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for stype in none regu symb dire tree; do
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for dtype in none regu symb dire tree; do
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echo -n "$options $stype/$dtype -> "
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_setup_one $source $stype
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_setup_one $dest $dtype
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src/renameat2 $source $dest $flags
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if test $? == 0; then
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_showtype_one $source
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echo -n "/"
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_showtype_one $dest
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echo "."
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fi
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_cleanup_one $source
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_cleanup_one $dest
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done
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done
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}
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#
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# This runs _rename_tests_source_dest() for both same-directory and
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# cross-directory renames
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#
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_rename_tests()
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{
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local testdir=$1
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local flags=$2
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#same directory renames
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_rename_tests_source_dest $testdir/src $testdir/dst "samedir "
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#cross directory renames
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mkdir $testdir/x $testdir/y
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_rename_tests_source_dest $testdir/x/src $testdir/y/dst "crossdir"
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rmdir $testdir/x $testdir/y
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}
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#
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# This checks whether the renameat2 syscall is supported
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#
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_requires_renameat2()
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{
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if test ! -x src/renameat2; then
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_notrun "renameat2 binary not found"
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fi
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if ! src/renameat2 -t; then
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_notrun "kernel doesn't support renameat2 syscall"
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fi
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}
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@@ -76,6 +76,8 @@ in
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;;
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esac
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AC_CHECK_FUNCS([renameat2])
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AC_CONFIG_HEADER(include/config.h)
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AC_CONFIG_FILES([include/builddefs])
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AC_OUTPUT
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+2
-1
@@ -18,7 +18,8 @@ LINUX_TARGETS = xfsctl bstat t_mtab getdevicesize preallo_rw_pattern_reader \
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locktest unwritten_mmap bulkstat_unlink_test t_stripealign \
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bulkstat_unlink_test_modified t_dir_offset t_futimens t_immutable \
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stale_handle pwrite_mmap_blocked t_dir_offset2 seek_sanity_test \
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seek_copy_test t_readdir_1 t_readdir_2 fsync-tester nsexec cloner
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seek_copy_test t_readdir_1 t_readdir_2 fsync-tester nsexec cloner \
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renameat2
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SUBDIRS =
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+102
@@ -0,0 +1,102 @@
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/*
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* Copyright (c) 2014, Miklos Szeredi <mszeredi@suse.cz>
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* This file is published under GPL2+.
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*
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* This is a trivial wrapper around the renameat2 syscall.
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*/
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#include "global.h"
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#ifndef HAVE_RENAMEAT2
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#include <sys/syscall.h>
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#if !defined(SYS_renameat2) && defined(__x86_64__)
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#define SYS_renameat2 316
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#endif
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static int renameat2(int dfd1, const char *path1,
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int dfd2, const char *path2,
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unsigned int flags)
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{
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#ifdef SYS_renameat2
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return syscall(SYS_renameat2, dfd1, path1, dfd2, path2, flags);
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#else
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errno = ENOSYS;
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return -1;
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#endif
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}
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#endif
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#ifndef RENAME_NOREPLACE
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#define RENAME_NOREPLACE (1 << 0) /* Don't overwrite target */
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#endif
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#ifndef RENAME_EXCHANGE
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#define RENAME_EXCHANGE (1 << 1) /* Exchange source and dest */
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#endif
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#ifndef RENAME_WHITEOUT
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#define RENAME_WHITEOUT (1 << 2) /* Whiteout source */
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#endif
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int main(int argc, char *argv[])
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{
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int ret;
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int c;
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const char *path1 = NULL;
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const char *path2 = NULL;
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unsigned int flags = 0;
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int test = 0;
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for (c = 1; c < argc; c++) {
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if (argv[c][0] == '-') {
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switch (argv[c][1]) {
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case 't':
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test = 1;
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break;
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case 'n':
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flags |= RENAME_NOREPLACE;
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break;
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case 'x':
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flags |= RENAME_EXCHANGE;
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break;
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case 'w':
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flags |= RENAME_WHITEOUT;
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break;
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default:
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goto usage;
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}
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} else if (!path1) {
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path1 = argv[c];
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} else if (!path2) {
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path2 = argv[c];
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} else {
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goto usage;
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}
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}
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if (!test && (!path1 || !path2))
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goto usage;
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ret = renameat2(AT_FDCWD, path1, AT_FDCWD, path2, flags);
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if (ret == -1) {
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if (test) {
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if (errno == ENOSYS || errno == EINVAL)
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return 1;
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else
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return 0;
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}
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perror("");
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return 1;
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}
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return 0;
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usage:
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fprintf(stderr,
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"usage: %s [-t] [-n|-x|-w] path1 path2\n"
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" -t test\n"
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" -n noreplace\n"
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" -x exchange\n"
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" -w whiteout\n", argv[0]);
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return 1;
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}
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