qemu/0002-qemu-config-load-modules-when-instantiating-option-g.patch

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2021-06-01 07:30:59 +00:00
From 7b861d20e22278fc5915f03d77b83e07ba44d440 Mon Sep 17 00:00:00 2001
From: Paolo Bonzini <pbonzini@redhat.com>
Date: Tue, 18 May 2021 09:15:42 -0400
Subject: [PATCH 2/5] qemu-config: load modules when instantiating option
groups
Right now the SPICE module is special cased to be loaded when processing
of the -spice command line option. However, the spice option group
can also be brought in via -readconfig, in which case the module is
not loaded.
Add a generic hook to load modules that provide a QemuOpts group,
and use it for the "spice" and "iscsi" groups.
Fixes: #194
Fixes: https://bugs.launchpad.net/qemu/+bug/1910696
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Message-Id: <20210518131542.2941207-1-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
include/qemu/config-file.h | 2 +-
softmmu/vl.c | 21 +++++++++++++++++----
stubs/meson.build | 1 +
stubs/module-opts.c | 6 ++++++
util/qemu-config.c | 1 +
5 files changed, 26 insertions(+), 5 deletions(-)
create mode 100644 stubs/module-opts.c
diff --git a/include/qemu/config-file.h b/include/qemu/config-file.h
index 8d3e53a..0500b36 100644
--- a/include/qemu/config-file.h
+++ b/include/qemu/config-file.h
@@ -1,7 +1,7 @@
#ifndef QEMU_CONFIG_FILE_H
#define QEMU_CONFIG_FILE_H
-
+void qemu_load_module_for_opts(const char *group);
QemuOptsList *qemu_find_opts(const char *group);
QemuOptsList *qemu_find_opts_err(const char *group, Error **errp);
QemuOpts *qemu_find_opts_singleton(const char *group);
diff --git a/softmmu/vl.c b/softmmu/vl.c
index 29d6415..4641f08 100644
--- a/softmmu/vl.c
+++ b/softmmu/vl.c
@@ -2613,6 +2613,23 @@ void qmp_x_exit_preconfig(Error **errp)
}
}
+#ifdef CONFIG_MODULES
+void qemu_load_module_for_opts(const char *group)
+{
+ static bool spice_tried = false;
+ if (g_str_equal(group, "spice") && !spice_tried) {
+ ui_module_load_one("spice-core");
+ spice_tried = true;
+ }
+
+ static bool iscsi_tried = false;
+ if (g_str_equal(group, "iscsi") && !iscsi_tried) {
+ block_module_load_one("iscsi");
+ iscsi_tried = true;
+ }
+}
+#endif
+
void qemu_init(int argc, char **argv, char **envp)
{
QemuOpts *opts;
@@ -3372,10 +3389,6 @@ void qemu_init(int argc, char **argv, char **envp)
break;
case QEMU_OPTION_spice:
olist = qemu_find_opts_err("spice", NULL);
- if (!olist) {
- ui_module_load_one("spice-core");
- olist = qemu_find_opts("spice");
- }
if (!olist) {
error_report("spice support is disabled");
exit(1);
diff --git a/stubs/meson.build b/stubs/meson.build
index be6f6d6..5555b69 100644
--- a/stubs/meson.build
+++ b/stubs/meson.build
@@ -22,6 +22,7 @@ stub_ss.add(files('isa-bus.c'))
stub_ss.add(files('is-daemonized.c'))
stub_ss.add(when: 'CONFIG_LINUX_AIO', if_true: files('linux-aio.c'))
stub_ss.add(files('migr-blocker.c'))
+stub_ss.add(files('module-opts.c'))
stub_ss.add(files('monitor.c'))
stub_ss.add(files('monitor-core.c'))
stub_ss.add(files('pci-bus.c'))
diff --git a/stubs/module-opts.c b/stubs/module-opts.c
new file mode 100644
index 0000000..a7d0e4a
--- /dev/null
+++ b/stubs/module-opts.c
@@ -0,0 +1,6 @@
+#include "qemu/osdep.h"
+#include "qemu/config-file.h"
+
+void qemu_load_module_for_opts(const char *group)
+{
+}
diff --git a/util/qemu-config.c b/util/qemu-config.c
index 670bd6e..34974c4 100644
--- a/util/qemu-config.c
+++ b/util/qemu-config.c
@@ -16,6 +16,7 @@ static QemuOptsList *find_list(QemuOptsList **lists, const char *group,
{
int i;
+ qemu_load_module_for_opts(group);
for (i = 0; lists[i] != NULL; i++) {
if (strcmp(lists[i]->name, group) == 0)
break;
--
2.31.1