If we want to add some info to errp (by error_prepend() or
error_append_hint()), we must use the ERRP_AUTO_PROPAGATE macro.
Otherwise, this info will not be added when errp == &fatal_err
(the program will exit prior to the error_append_hint() or
error_prepend() call). Fix such cases.
If we want to check error after errp-function call, we need to
introduce local_err and than propagate it to errp. Instead, use
ERRP_AUTO_PROPAGATE macro, benefits are:
1. No need of explicit error_propagate call
2. No need of explicit local_err variable: use errp directly
3. ERRP_AUTO_PROPAGATE leaves errp as is if it's not NULL or
&error_fatel, this means that we don't break error_abort
(we'll abort on error_set, not on error_propagate)
This commit (together with its neighbors) was generated by
for f in $(git grep -l errp \*.[ch]); do \
spatch --sp-file scripts/coccinelle/auto-propagated-errp.cocci \
--macro-file scripts/cocci-macro-file.h --in-place --no-show-diff $f; \
done;
then fix a bit of compilation problems: coccinelle for some reason
leaves several
f() {
...
goto out;
...
out:
}
patterns, with "out:" at function end.
then
./python/commit-per-subsystem.py MAINTAINERS "$(< auto-msg)"
(auto-msg was a file with this commit message)
Still, for backporting it may be more comfortable to use only the first
command and then do one huge commit.
Reported-by: Kevin Wolf <kw...@redhat.com>
Reported-by: Greg Kurz <gr...@kaod.org>
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>
---
trace/qmp.c | 14 ++++++--------
1 file changed, 6 insertions(+), 8 deletions(-)
diff --git a/trace/qmp.c b/trace/qmp.c
index 38246e1aa6..05335f2da4 100644
--- a/trace/qmp.c
+++ b/trace/qmp.c
@@ -70,7 +70,7 @@ TraceEventInfoList *qmp_trace_event_get_state(const char
*name,
bool has_vcpu, int64_t vcpu,
Error **errp)
{
- Error *err = NULL;
+ ERRP_AUTO_PROPAGATE();
TraceEventInfoList *events = NULL;
TraceEventIter iter;
TraceEvent *ev;
@@ -78,9 +78,8 @@ TraceEventInfoList *qmp_trace_event_get_state(const char
*name,
CPUState *cpu;
/* Check provided vcpu */
- cpu = get_cpu(has_vcpu, vcpu, &err);
- if (err) {
- error_propagate(errp, err);
+ cpu = get_cpu(has_vcpu, vcpu, errp);
+ if (*errp) {
return NULL;
}
@@ -135,16 +134,15 @@ void qmp_trace_event_set_state(const char *name, bool
enable,
bool has_vcpu, int64_t vcpu,
Error **errp)
{
- Error *err = NULL;
+ ERRP_AUTO_PROPAGATE();
TraceEventIter iter;
TraceEvent *ev;
bool is_pattern = trace_event_is_pattern(name);
CPUState *cpu;
/* Check provided vcpu */
- cpu = get_cpu(has_vcpu, vcpu, &err);
- if (err) {
- error_propagate(errp, err);
+ cpu = get_cpu(has_vcpu, vcpu, errp);
+ if (*errp) {
return;
}
--
2.21.0
