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 <[email protected]>
Reported-by: Greg Kurz <[email protected]>
Signed-off-by: Vladimir Sementsov-Ogievskiy <[email protected]>
---
block/vvfat.c | 12 +++++-------
1 file changed, 5 insertions(+), 7 deletions(-)
diff --git a/block/vvfat.c b/block/vvfat.c
index 019b8f1341..34cbed71b7 100644
--- a/block/vvfat.c
+++ b/block/vvfat.c
@@ -1149,12 +1149,12 @@ static void vvfat_parse_filename(const char *filename,
QDict *options,
static int vvfat_open(BlockDriverState *bs, QDict *options, int flags,
Error **errp)
{
+ ERRP_AUTO_PROPAGATE();
BDRVVVFATState *s = bs->opaque;
int cyls, heads, secs;
bool floppy;
const char *dirname, *label;
QemuOpts *opts;
- Error *local_err = NULL;
int ret;
#ifdef DEBUG
@@ -1162,9 +1162,8 @@ static int vvfat_open(BlockDriverState *bs, QDict
*options, int flags,
#endif
opts = qemu_opts_create(&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;
}
@@ -1282,9 +1281,8 @@ static int vvfat_open(BlockDriverState *bs, QDict
*options, int flags,
"The vvfat (rw) 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;
}
--
2.21.0
