#endif
#include "qemu/queue.h"
#include "qemu/module.h"
+#include "qemu/cutils.h"
#ifdef CONFIG_MODULE_UPGRADES
#include "qemu-version.h"
#endif
}
#ifdef CONFIG_MODULES
-static int module_load_file(const char *fname)
+static int module_load_file(const char *fname, bool mayfail, bool export_symbols)
{
GModule *g_module;
void (*sym)(void);
- const char *dsosuf = HOST_DSOSUF;
+ const char *dsosuf = CONFIG_HOST_DSOSUF;
int len = strlen(fname);
int suf_len = strlen(dsosuf);
ModuleEntry *e, *next;
- int ret;
+ int ret, flags;
if (len <= suf_len || strcmp(&fname[len - suf_len], dsosuf)) {
/* wrong suffix */
assert(QTAILQ_EMPTY(&dso_init_list));
- g_module = g_module_open(fname, G_MODULE_BIND_LAZY | G_MODULE_BIND_LOCAL);
+ flags = 0;
+ if (!export_symbols) {
+ flags |= G_MODULE_BIND_LOCAL;
+ }
+ g_module = g_module_open(fname, flags);
if (!g_module) {
- fprintf(stderr, "Failed to open module: %s\n",
- g_module_error());
+ if (!mayfail) {
+ fprintf(stderr, "Failed to open module: %s\n",
+ g_module_error());
+ }
ret = -EINVAL;
goto out;
}
out:
return ret;
}
+
+static const struct {
+ const char *name;
+ const char *dep;
+} module_deps[] = {
+ { "audio-spice", "ui-spice-core" },
+ { "chardev-spice", "ui-spice-core" },
+ { "hw-display-qxl", "ui-spice-core" },
+ { "ui-spice-app", "ui-spice-core" },
+ { "ui-spice-app", "chardev-spice" },
+
+ { "hw-display-virtio-gpu-gl", "hw-display-virtio-gpu" },
+ { "hw-display-virtio-gpu-pci-gl", "hw-display-virtio-gpu-pci" },
+ { "hw-display-virtio-vga-gl", "hw-display-virtio-vga" },
+
+#ifdef CONFIG_OPENGL
+ { "ui-egl-headless", "ui-opengl" },
+ { "ui-gtk", "ui-opengl" },
+ { "ui-sdl", "ui-opengl" },
+ { "ui-spice-core", "ui-opengl" },
+#endif
+};
#endif
-bool module_load_one(const char *prefix, const char *lib_name)
+bool module_load_one(const char *prefix, const char *lib_name, bool mayfail)
{
bool success = false;
#ifdef CONFIG_MODULES
char *fname = NULL;
- char *exec_dir;
#ifdef CONFIG_MODULE_UPGRADES
char *version_dir;
#endif
const char *search_dir;
- char *dirs[4];
+ char *dirs[5];
char *module_name;
int i = 0, n_dirs = 0;
- int ret;
+ int ret, dep;
+ bool export_symbols = false;
static GHashTable *loaded_modules;
if (!g_module_supported()) {
module_name = g_strdup_printf("%s%s", prefix, lib_name);
- if (!g_hash_table_add(loaded_modules, module_name)) {
+ for (dep = 0; dep < ARRAY_SIZE(module_deps); dep++) {
+ if (strcmp(module_name, module_deps[dep].name) == 0) {
+ /* we depend on another module */
+ module_load_one("", module_deps[dep].dep, false);
+ }
+ if (strcmp(module_name, module_deps[dep].dep) == 0) {
+ /* another module depends on us */
+ export_symbols = true;
+ }
+ }
+
+ if (g_hash_table_contains(loaded_modules, module_name)) {
g_free(module_name);
return true;
}
+ g_hash_table_add(loaded_modules, module_name);
- exec_dir = qemu_get_exec_dir();
search_dir = getenv("QEMU_MODULE_DIR");
if (search_dir != NULL) {
dirs[n_dirs++] = g_strdup_printf("%s", search_dir);
}
- dirs[n_dirs++] = g_strdup_printf("%s", CONFIG_QEMU_MODDIR);
- dirs[n_dirs++] = g_strdup_printf("%s/..", exec_dir ? : "");
- dirs[n_dirs++] = g_strdup_printf("%s", exec_dir ? : "");
+ dirs[n_dirs++] = get_relocated_path(CONFIG_QEMU_MODDIR);
+ dirs[n_dirs++] = g_strdup(qemu_get_exec_dir());
#ifdef CONFIG_MODULE_UPGRADES
version_dir = g_strcanon(g_strdup(QEMU_PKGVERSION),
assert(n_dirs <= ARRAY_SIZE(dirs));
- g_free(exec_dir);
- exec_dir = NULL;
-
for (i = 0; i < n_dirs; i++) {
fname = g_strdup_printf("%s/%s%s",
- dirs[i], module_name, HOST_DSOSUF);
- ret = module_load_file(fname);
+ dirs[i], module_name, CONFIG_HOST_DSOSUF);
+ ret = module_load_file(fname, mayfail, export_symbols);
g_free(fname);
fname = NULL;
/* Try loading until loaded a module file */
#endif
return success;
}
+
+/*
+ * Building devices and other qom objects modular is mostly useful in
+ * case they have dependencies to external shared libraries, so we can
+ * cut down the core qemu library dependencies. Which is the case for
+ * only a very few devices & objects.
+ *
+ * So with the expectation that this will be rather the exception than
+ * the rule and the list will not gain that many entries, go with a
+ * simple manually maintained list for now.
+ *
+ * The list must be sorted by module (module_load_qom_all() needs this).
+ */
+static struct {
+ const char *type;
+ const char *prefix;
+ const char *module;
+} const qom_modules[] = {
+ { "ccid-card-passthru", "hw-", "usb-smartcard" },
+ { "ccid-card-emulated", "hw-", "usb-smartcard" },
+ { "usb-redir", "hw-", "usb-redirect" },
+ { "qxl-vga", "hw-", "display-qxl" },
+ { "qxl", "hw-", "display-qxl" },
+ { "virtio-gpu-device", "hw-", "display-virtio-gpu" },
+ { "virtio-gpu-gl-device", "hw-", "display-virtio-gpu-gl" },
+ { "vhost-user-gpu", "hw-", "display-virtio-gpu" },
+ { "virtio-gpu-pci-base", "hw-", "display-virtio-gpu-pci" },
+ { "virtio-gpu-pci", "hw-", "display-virtio-gpu-pci" },
+ { "virtio-gpu-gl-pci", "hw-", "display-virtio-gpu-pci-gl" },
+ { "vhost-user-gpu-pci", "hw-", "display-virtio-gpu-pci" },
+ { "virtio-gpu-ccw", "hw-", "s390x-virtio-gpu-ccw" },
+ { "virtio-vga-base", "hw-", "display-virtio-vga" },
+ { "virtio-vga", "hw-", "display-virtio-vga" },
+ { "virtio-vga-gl", "hw-", "display-virtio-vga-gl" },
+ { "vhost-user-vga", "hw-", "display-virtio-vga" },
+ { "chardev-braille", "chardev-", "baum" },
+ { "chardev-spicevmc", "chardev-", "spice" },
+ { "chardev-spiceport", "chardev-", "spice" },
+};
+
+static bool module_loaded_qom_all;
+
+void module_load_qom_one(const char *type)
+{
+ int i;
+
+ if (!type) {
+ return;
+ }
+ for (i = 0; i < ARRAY_SIZE(qom_modules); i++) {
+ if (strcmp(qom_modules[i].type, type) == 0) {
+ module_load_one(qom_modules[i].prefix,
+ qom_modules[i].module,
+ false);
+ return;
+ }
+ }
+}
+
+void module_load_qom_all(void)
+{
+ int i;
+
+ if (module_loaded_qom_all) {
+ return;
+ }
+ for (i = 0; i < ARRAY_SIZE(qom_modules); i++) {
+ if (i > 0 && (strcmp(qom_modules[i - 1].module,
+ qom_modules[i].module) == 0 &&
+ strcmp(qom_modules[i - 1].prefix,
+ qom_modules[i].prefix) == 0)) {
+ /* one module implementing multiple types -> load only once */
+ continue;
+ }
+ module_load_one(qom_modules[i].prefix, qom_modules[i].module, true);
+ }
+ module_loaded_qom_all = true;
+}
projects / mirror_qemu.git / blobdiff