On Thu, Feb 13, 2025 at 12:06:24PM -0600, Eric Sandeen wrote: > 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" When does the file not get created? --D > + > +# 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 > >
