A bug was recently fixed in exfat where attempting to do a zero-byte write would yield -EFAULT; test for that here. Signed-off-by: Eric Sandeen <sandeen@xxxxxxxxxx> --- diff --git a/tests/generic/761 b/tests/generic/761 new file mode 100755 index 00000000..e933eb83 --- /dev/null +++ b/tests/generic/761 @@ -0,0 +1,28 @@ +#! /bin/bash +# SPDX-License-Identifier: GPL-2.0 +# Copyright (c) 2025 Red Hat, Inc. All Rights Reserved. +# +# FS QA Test 761 +# +# test zero-byte writes +# +# exfat had a regression where a zero-byte write to a file would +# yield -EfAULT. Should work on all filesystems - write should +# succeed and the zero-byte file should be created. +# +. ./common/preamble +_begin_fstest auto quick + +[ "$FSTYP" = "exfat" ] && _fixed_by_kernel_commit dda0407a2026 \ + "exfat: short-circuit zero-byte writes in exfat_file_write_iter" + +# Modify as appropriate. +_require_test + +rm -f $TEST_DIR/testfile.$seq +$XFS_IO_PROG -f -c "pwrite 0 0" $TEST_DIR/testfile.$seq +test -f $TEST_DIR/testfile.$seq || _fail "file not created" + +# success, all done +status=0 +exit diff --git a/tests/generic/761.out b/tests/generic/761.out new file mode 100644 index 00000000..72ebba4c --- /dev/null +++ b/tests/generic/761.out @@ -0,0 +1,2 @@ +QA output created by 761 +Silence is golden
