@@ -213,12 +213,12 @@ static void vpc_parse_options(BlockDriverState *bs, QemuOpts *opts,
static int vpc_open(BlockDriverState *bs, QDict *options, int flags,
Error **errp)
{
+ ERRP_AUTO_PROPAGATE();
BDRVVPCState *s = bs->opaque;
int i;
VHDFooter *footer;
VHDDynDiskHeader *dyndisk_header;
QemuOpts *opts = NULL;
- Error *local_err = NULL;
bool use_chs;
uint8_t buf[HEADER_SIZE];
uint32_t checksum;
@@ -235,16 +235,14 @@ static int vpc_open(BlockDriverState *bs, QDict *options, int flags,
}
opts = qemu_opts_create(&vpc_runtime_opts, NULL, 0, &error_abort);
- qemu_opts_absorb_qdict(opts, options, &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
+ qemu_opts_absorb_qdict(opts, options, errp);
+ if (*errp) {
ret = -EINVAL;
goto fail;
}
- vpc_parse_options(bs, opts, &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
+ vpc_parse_options(bs, opts, errp);
+ if (*errp) {
ret = -EINVAL;
goto fail;
}
@@ -448,9 +446,8 @@ static int vpc_open(BlockDriverState *bs, QDict *options, int flags,
error_setg(&s->migration_blocker, "The vpc format used by node '%s' "
"does not support live migration",
bdrv_get_device_or_node_name(bs));
- ret = migrate_add_blocker(s->migration_blocker, &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
+ ret = migrate_add_blocker(s->migration_blocker, errp);
+ if (*errp) {
error_free(s->migration_blocker);
goto fail;
}
@@ -971,6 +968,7 @@ static int calculate_rounded_image_size(BlockdevCreateOptionsVpc *vpc_opts,
static int coroutine_fn vpc_co_create(BlockdevCreateOptions *opts,
Error **errp)
{
+ ERRP_AUTO_PROPAGATE();
BlockdevCreateOptionsVpc *vpc_opts;
BlockBackend *blk = NULL;
BlockDriverState *bs = NULL;
@@ -1092,11 +1090,11 @@ out:
static int coroutine_fn vpc_co_create_opts(const char *filename,
QemuOpts *opts, Error **errp)
{
+ ERRP_AUTO_PROPAGATE();
BlockdevCreateOptions *create_options = NULL;
QDict *qdict;
Visitor *v;
BlockDriverState *bs = NULL;
- Error *local_err = NULL;
int ret;
static const QDictRenames opt_renames[] = {
@@ -1113,9 +1111,8 @@ static int coroutine_fn vpc_co_create_opts(const char *filename,
}
/* Create and open the file (protocol layer) */
- ret = bdrv_create_file(filename, opts, &local_err);
+ ret = bdrv_create_file(filename, opts, errp);
if (ret < 0) {
- error_propagate(errp, local_err);
goto fail;
}
@@ -1136,11 +1133,10 @@ static int coroutine_fn vpc_co_create_opts(const char *filename,
goto fail;
}
- visit_type_BlockdevCreateOptions(v, NULL, &create_options, &local_err);
+ visit_type_BlockdevCreateOptions(v, NULL, &create_options, errp);
visit_free(v);
- if (local_err) {
- error_propagate(errp, local_err);
+ if (*errp) {
ret = -EINVAL;
goto fail;
}
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 <kwolf@redhat.com> Reported-by: Greg Kurz <groug@kaod.org> Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> --- block/vpc.c | 28 ++++++++++++---------------- 1 file changed, 12 insertions(+), 16 deletions(-)