[sorry, more comments on this patch]
On Fri, Nov 04, 2016 at 05:17:54PM -0700, Darrick J. Wong wrote:
> Create some routines to help us perform targeted fuzzing of individual
> fields in various XFS structures. Specifically, we want the caller to
> drop the xfs_db iocursor on the victim field; from there, the scripts
> should discover all available fields and fuzzing verbs, and try each
> fuzz verb on every available field.
>
> Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
> ---
> common/fuzzy | 191 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 191 insertions(+)
>
>
[snip]
> +
> +# Make sure we have all the pieces we need for field fuzzing
> +_require_scratch_xfs_fuzz_fields()
> +{
> + _require_scratch
> + _require_scrub
> + _require_populate_commands
> + _require_command "$XFS_DB_PROG" "xfs_db"
This is included in _require_populate_commands, not needed here.
> + _scratch_mkfs_xfs >/dev/null 2>&1
> + _scratch_xfs_db -x -c 'fuzz' 2>&1 | grep -q 'not found' && \
> + _notrun "xfs_db does not have fuzz command"
Does _require_xfs_db_command work here?
Thanks,
Eryu
> +}
> +
> +# Grab the list of available fuzzing verbs
> +_scratch_xfs_list_fuzz_verbs() {
> + if [ -n "${SCRATCH_XFS_LIST_FUZZ_VERBS}" ]; then
> + echo "${SCRATCH_XFS_LIST_FUZZ_VERBS}" | sed -e 's/ /\n/g'
> + return;
> + fi
> + _scratch_xfs_db -x -c 'sb 0' -c 'fuzz' | grep '^Verbs:' | \
> + sed -e 's/[,.]//g' -e 's/Verbs: //g' -e 's/ /\n/g'
> +}
> +
> +# Fuzz the fields of some piece of metadata
> +_scratch_xfs_fuzz_fields() {
> + _scratch_xfs_list_metadata_fields "$@" | while read field; do
> + _scratch_xfs_list_fuzz_verbs | while read fuzzverb; do
> + __scratch_xfs_fuzz_mdrestore
> + __scratch_xfs_fuzz_field_test "${field}" "${fuzzverb}" "$@"
> + done
> + done
> +}
>
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