79 lines
2.1 KiB
C
79 lines
2.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* load kernel modules
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*
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* Copyright © 2011 ProFUSION embedded systems
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*/
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#include <errno.h>
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#include <libkmod.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "module-util.h"
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#include "string-util.h"
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#include "udev.h"
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static struct kmod_ctx *ctx = NULL;
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_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) {
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log_internalv(priority, 0, file, line, fn, format, args);
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}
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static int builtin_kmod(struct udev_device *dev, int argc, char *argv[], bool test) {
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int i;
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if (!ctx)
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return 0;
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if (argc < 3 || !streq(argv[1], "load")) {
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log_error("%s: expected: load <module>", argv[0]);
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return EXIT_FAILURE;
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}
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for (i = 2; argv[i]; i++)
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(void) module_load_and_warn(ctx, argv[i], false);
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return EXIT_SUCCESS;
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}
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/* called at udev startup and reload */
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static int builtin_kmod_init(struct udev *udev) {
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if (ctx)
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return 0;
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ctx = kmod_new(NULL, NULL);
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if (!ctx)
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return -ENOMEM;
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log_debug("Load module index");
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kmod_set_log_fn(ctx, udev_kmod_log, udev);
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kmod_load_resources(ctx);
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return 0;
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}
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/* called on udev shutdown and reload request */
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static void builtin_kmod_exit(struct udev *udev) {
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log_debug("Unload module index");
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ctx = kmod_unref(ctx);
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}
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/* called every couple of seconds during event activity; 'true' if config has changed */
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static bool builtin_kmod_validate(struct udev *udev) {
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log_debug("Validate module index");
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if (!ctx)
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return false;
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return (kmod_validate_resources(ctx) != KMOD_RESOURCES_OK);
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}
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const struct udev_builtin udev_builtin_kmod = {
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.name = "kmod",
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.cmd = builtin_kmod,
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.init = builtin_kmod_init,
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.exit = builtin_kmod_exit,
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.validate = builtin_kmod_validate,
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.help = "Kernel module loader",
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.run_once = false,
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};
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