@@ -141,36 +141,33 @@ static uint64_t blk_log_writes_find_cur_log_sector(BdrvChild *log,
static int blk_log_writes_open(BlockDriverState *bs, QDict *options, int flags,
Error **errp)
{
+ ERRP_AUTO_PROPAGATE();
BDRVBlkLogWritesState *s = bs->opaque;
QemuOpts *opts;
- Error *local_err = NULL;
int ret;
uint64_t log_sector_size;
bool log_append;
opts = qemu_opts_create(&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;
- error_propagate(errp, local_err);
goto fail;
}
/* Open the file */
bs->file = bdrv_open_child(NULL, options, "file", bs, &child_file, false,
- &local_err);
- if (local_err) {
+ errp);
+ if (*errp) {
ret = -EINVAL;
- error_propagate(errp, local_err);
goto fail;
}
/* Open the log file */
s->log_file = bdrv_open_child(NULL, options, "log", bs, &child_file, false,
- &local_err);
- if (local_err) {
+ errp);
+ if (*errp) {
ret = -EINVAL;
- error_propagate(errp, local_err);
goto fail;
}
@@ -220,10 +217,9 @@ static int blk_log_writes_open(BlockDriverState *bs, QDict *options, int flags,
if (blk_log_writes_sector_size_valid(log_sector_size)) {
s->cur_log_sector =
blk_log_writes_find_cur_log_sector(s->log_file, log_sector_size,
- le64_to_cpu(log_sb.nr_entries), &local_err);
- if (local_err) {
+ le64_to_cpu(log_sb.nr_entries), errp);
+ if (*errp) {
ret = -EINVAL;
- error_propagate(errp, local_err);
goto fail_log;
}
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/blklogwrites.c | 22 +++++++++------------- 1 file changed, 9 insertions(+), 13 deletions(-)