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>
---
block/quorum.c | 23 +++++++++++------------
1 file changed, 11 insertions(+), 12 deletions(-)
diff --git a/block/quorum.c b/block/quorum.c
index df68adcfaa..5c531e1ec5 100644
--- a/block/quorum.c
+++ b/block/quorum.c
@@ -861,8 +861,8 @@ static QemuOptsList quorum_runtime_opts = {
static int quorum_open(BlockDriverState *bs, QDict *options, int flags,
Error **errp)
{
+ ERRP_AUTO_PROPAGATE();
BDRVQuorumState *s = bs->opaque;
- Error *local_err = NULL;
QemuOpts *opts = NULL;
const char *pattern_str;
bool *opened;
@@ -874,27 +874,27 @@ static int quorum_open(BlockDriverState *bs, QDict
*options, int flags,
/* count how many different children are present */
s->num_children = qdict_array_entries(options, "children.");
if (s->num_children < 0) {
- error_setg(&local_err, "Option children is not a valid array");
+ error_setg(errp, "Option children is not a valid array");
ret = -EINVAL;
goto exit;
}
if (s->num_children < 1) {
- error_setg(&local_err,
+ error_setg(errp,
"Number of provided children must be 1 or more");
ret = -EINVAL;
goto exit;
}
opts = qemu_opts_create(&quorum_runtime_opts, NULL, 0, &error_abort);
- qemu_opts_absorb_qdict(opts, options, &local_err);
- if (local_err) {
+ qemu_opts_absorb_qdict(opts, options, errp);
+ if (*errp) {
ret = -EINVAL;
goto exit;
}
s->threshold = qemu_opt_get_number(opts, QUORUM_OPT_VOTE_THRESHOLD, 0);
/* and validate it against s->num_children */
- ret = quorum_valid_threshold(s->threshold, s->num_children, &local_err);
+ ret = quorum_valid_threshold(s->threshold, s->num_children, errp);
if (ret < 0) {
goto exit;
}
@@ -907,7 +907,7 @@ static int quorum_open(BlockDriverState *bs, QDict
*options, int flags,
-EINVAL, NULL);
}
if (ret < 0) {
- error_setg(&local_err, "Please set read-pattern as fifo or quorum");
+ error_setg(errp, "Please set read-pattern as fifo or quorum");
goto exit;
}
s->read_pattern = ret;
@@ -915,7 +915,7 @@ static int quorum_open(BlockDriverState *bs, QDict
*options, int flags,
if (s->read_pattern == QUORUM_READ_PATTERN_QUORUM) {
s->is_blkverify = qemu_opt_get_bool(opts, QUORUM_OPT_BLKVERIFY, false);
if (s->is_blkverify && (s->num_children != 2 || s->threshold != 2)) {
- error_setg(&local_err, "blkverify=on can only be set if there are "
+ error_setg(errp, "blkverify=on can only be set if there are "
"exactly two files and vote-threshold is 2");
ret = -EINVAL;
goto exit;
@@ -924,7 +924,7 @@ static int quorum_open(BlockDriverState *bs, QDict
*options, int flags,
s->rewrite_corrupted = qemu_opt_get_bool(opts, QUORUM_OPT_REWRITE,
false);
if (s->rewrite_corrupted && s->is_blkverify) {
- error_setg(&local_err,
+ error_setg(errp,
"rewrite-corrupted=on cannot be used with
blkverify=on");
ret = -EINVAL;
goto exit;
@@ -941,8 +941,8 @@ static int quorum_open(BlockDriverState *bs, QDict
*options, int flags,
assert(ret < 32);
s->children[i] = bdrv_open_child(NULL, options, indexstr, bs,
- &child_format, false, &local_err);
- if (local_err) {
+ &child_format, false, errp);
+ if (*errp) {
ret = -EINVAL;
goto close_exit;
}
@@ -969,7 +969,6 @@ close_exit:
exit:
qemu_opts_del(opts);
/* propagate error */
- error_propagate(errp, local_err);
return ret;
}
--
2.21.0
