Merge pull request #31131 from poettering/dlopen-kmod

turn libkmod into a dlopen() dependency, too

src/udev/meson.build

@@ -114,7 +114,7 @@ libudevd_core = static_library(
         include_directories : includes + include_directories('net'),
         link_with : udev_link_with,
         dependencies : [libblkid,
-                        libkmod,
+                        libkmod_cflags,
                         userspace],
         build_by_default : false)
 

src/udev/udev-builtin-kmod.c

@@ -18,10 +18,6 @@
 
 static struct kmod_ctx *ctx = NULL;
 
-_printf_(6,0) static void udev_kmod_log(void *data, int priority, const char *file, int line, const char *fn, const char *format, va_list args) {
-        log_internalv(priority, 0, file, line, fn, format, args);
-}
-
 static int builtin_kmod(UdevEvent *event, int argc, char *argv[]) {
         sd_device *dev = ASSERT_PTR(ASSERT_PTR(event)->dev);
         int r;
@@ -44,7 +40,7 @@ static int builtin_kmod(UdevEvent *event, int argc, char *argv[]) {
 
                 r = sd_device_get_property_value(dev, "MODALIAS", &modalias);
                 if (r < 0)
-                        return log_device_warning_errno(dev, r, "Failed to read property \"MODALIAS\".");
+                        return log_device_warning_errno(dev, r, "Failed to read property \"MODALIAS\": %m");
 
                 (void) module_load_and_warn(ctx, modalias, /* verbose = */ false);
         } else
@@ -56,23 +52,28 @@ static int builtin_kmod(UdevEvent *event, int argc, char *argv[]) {
 
 /* called at udev startup and reload */
 static int builtin_kmod_init(void) {
+        int r;
+
         if (ctx)
                 return 0;
 
-        ctx = kmod_new(NULL, NULL);
-        if (!ctx)
-                return -ENOMEM;
-
         log_debug("Loading kernel module index.");
-        kmod_set_log_fn(ctx, udev_kmod_log, NULL);
-        kmod_load_resources(ctx);
+
+        r = module_setup_context(&ctx);
+        if (r < 0)
+                return log_error_errno(r, "Failed to initialize libkmod context: %m");
+
         return 0;
 }
 
 /* called on udev shutdown and reload request */
 static void builtin_kmod_exit(void) {
         log_debug("Unload kernel module index.");
-        ctx = kmod_unref(ctx);
+
+        if (!ctx)
+                return;
+
+        ctx = sym_kmod_unref(ctx);
 }
 
 /* called every couple of seconds during event activity; 'true' if config has changed */
@@ -80,7 +81,7 @@ static bool builtin_kmod_should_reload(void) {
         if (!ctx)
                 return false;
 
-        if (kmod_validate_resources(ctx) != KMOD_RESOURCES_OK) {
+        if (sym_kmod_validate_resources(ctx) != KMOD_RESOURCES_OK) {
                 log_debug("Kernel module index needs reloading.");
                 return true;
         }