1 files changed, 123 insertions, 0 deletions
diff --git a/src/grp-udev/libudev-core/udev-builtin-kmod.c b/src/grp-udev/libudev-core/udev-builtin-kmod.c
new file mode 100644
index 0000000000..91732bbfa4
--- /dev/null
+++ b/src/grp-udev/libudev-core/udev-builtin-kmod.c
@@ -0,0 +1,123 @@
+/*
+ * load kernel modules
+ *
+ * Copyright (C) 2011-2012 Kay Sievers <kay@vrfy.org>
+ * Copyright (C) 2011 ProFUSION embedded systems
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <errno.h>
+#include <libkmod.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "systemd-basic/string-util.h"
+#include "udev.h"
+
+static struct kmod_ctx *ctx = NULL;
+
+static int load_module(struct udev *udev, const char *alias) {
+        struct kmod_list *list = NULL;
+        struct kmod_list *l;
+        int err;
+
+        err = kmod_module_new_from_lookup(ctx, alias, &list);
+        if (err < 0)
+                return err;
+
+        if (list == NULL)
+                log_debug("No module matches '%s'", alias);
+
+        kmod_list_foreach(l, list) {
+                struct kmod_module *mod = kmod_module_get_module(l);
+
+                err = kmod_module_probe_insert_module(mod, KMOD_PROBE_APPLY_BLACKLIST, NULL, NULL, NULL, NULL);
+                if (err == KMOD_PROBE_APPLY_BLACKLIST)
+                        log_debug("Module '%s' is blacklisted", kmod_module_get_name(mod));
+                else if (err == 0)
+                        log_debug("Inserted '%s'", kmod_module_get_name(mod));
+                else
+                        log_debug("Failed to insert '%s'", kmod_module_get_name(mod));
+
+                kmod_module_unref(mod);
+        }
+
+        kmod_module_unref_list(list);
+        return err;
+}
+
+_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(struct udev_device *dev, int argc, char *argv[], bool test) {
+        struct udev *udev = udev_device_get_udev(dev);
+        int i;
+
+        if (!ctx)
+                return 0;
+
+        if (argc < 3 || !streq(argv[1], "load")) {
+                log_error("expect: %s load <module>", argv[0]);
+                return EXIT_FAILURE;
+        }
+
+        for (i = 2; argv[i]; i++) {
+                log_debug("Execute '%s' '%s'", argv[1], argv[i]);
+                load_module(udev, argv[i]);
+        }
+
+        return EXIT_SUCCESS;
+}
+
+/* called at udev startup and reload */
+static int builtin_kmod_init(struct udev *udev) {
+        if (ctx)
+                return 0;
+
+        ctx = kmod_new(NULL, NULL);
+        if (!ctx)
+                return -ENOMEM;
+
+        log_debug("Load module index");
+        kmod_set_log_fn(ctx, udev_kmod_log, udev);
+        kmod_load_resources(ctx);
+        return 0;
+}
+
+/* called on udev shutdown and reload request */
+static void builtin_kmod_exit(struct udev *udev) {
+        log_debug("Unload module index");
+        ctx = kmod_unref(ctx);
+}
+
+/* called every couple of seconds during event activity; 'true' if config has changed */
+static bool builtin_kmod_validate(struct udev *udev) {
+        log_debug("Validate module index");
+        if (!ctx)
+                return false;
+        return (kmod_validate_resources(ctx) != KMOD_RESOURCES_OK);
+}
+
+const struct udev_builtin udev_builtin_kmod = {
+        .name = "kmod",
+        .cmd = builtin_kmod,
+        .init = builtin_kmod_init,
+        .exit = builtin_kmod_exit,
+        .validate = builtin_kmod_validate,
+        .help = "Kernel module loader",
+        .run_once = false,
+};