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>
---
net/slirp.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/net/slirp.c b/net/slirp.c
index c4334ee876..cbde9ba2a9 100644
--- a/net/slirp.c
+++ b/net/slirp.c
@@ -941,6 +941,7 @@ static ssize_t guestfwd_write(const void *buf, size_t len,
void *chr)
static int slirp_guestfwd(SlirpState *s, const char *config_str, Error **errp)
{
+ ERRP_AUTO_PROPAGATE();
/* TODO: IPv6 */
struct in_addr server = { .s_addr = 0 };
struct GuestFwd *fwd;
@@ -979,7 +980,6 @@ static int slirp_guestfwd(SlirpState *s, const char
*config_str, Error **errp)
return -1;
}
} else {
- Error *err = NULL;
/*
* FIXME: sure we want to support implicit
* muxed monitors here?
@@ -993,9 +993,8 @@ static int slirp_guestfwd(SlirpState *s, const char
*config_str, Error **errp)
}
fwd = g_new(struct GuestFwd, 1);
- qemu_chr_fe_init(&fwd->hd, chr, &err);
- if (err) {
- error_propagate(errp, err);
+ qemu_chr_fe_init(&fwd->hd, chr, errp);
+ if (*errp) {
object_unparent(OBJECT(chr));
g_free(fwd);
return -1;
--
2.21.0
