scripts/coccinelle/errp-guard.cocci

20 // spatch --sp-file scripts/coccinelle/errp-guard.cocci \
21 //  --macro-file scripts/cocci-macro-file.h --in-place \
22 //  --no-show-diff --max-width 80 FILES...
24 // Note: --max-width 80 is needed because coccinelle default is less
47 -   Error **_errp
55 -    _errp
61 // Add invocation of ERRP_GUARD() to errp-functions where // necessary
105 // Note, that even with one (or zero) Error * definition in the each
108 // simple way to match with help of coccinelle.
163       'one control flow: at {}:{} and then at {}:{}'.format(
168 // don't know a proper way to inherit a function, not just its name
170 // Not-proper way is as follows: rename errp parameter in functions
174 // The common case is a single definition of local_err with at most one
175 // error_propagate_prepend() or error_propagate() on each control-flow
181 // which has the "common case" on at least one control-flow path.
188 -    errp
204 // I tried merging this into the following rule the obvious way, but
219 -    goto out;
222 - out:
223 -    error_propagate(errp, local_err);
231 // the same name in different blocks inside one function, and in one
234 // Note also that errp-cleaning functions
240 // are not yet implemented. They must call corresponding Error* -
260 -    Error *local_err = NULL;
265 -    error_free(local_err);
268 -    error_report_err(local_err);
271 -    error_reportf_err(local_err, args);
274 -    warn_report_err(local_err);
277 -    warn_reportf_err(local_err, args);
280 ?-    local_err = NULL;
283 -    error_propagate_prepend(errp, local_err, args);
286 -    error_propagate(errp, local_err);
288 -    &local_err
297 // least with "- local_err = NULL").
306 -    local_err
320 -    *errp != NULL
331 -   ____