| 1 | /* $Id: VBoxLnxModInline.h 103792 2024-03-11 18:05:14Z vboxsync $ */
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| 2 | /** @file
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| 3 | * A common code for VirtualBox Linux kernel modules.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2024 Oracle and/or its affiliates.
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| 8 | *
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| 9 | * Permission is hereby granted, free of charge, to any person
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| 10 | * obtaining a copy of this software and associated documentation
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| 11 | * files (the "Software"), to deal in the Software without
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| 12 | * restriction, including without limitation the rights to use,
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| 13 | * copy, modify, merge, publish, distribute, sublicense, and/or sell
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| 14 | * copies of the Software, and to permit persons to whom the
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| 15 | * Software is furnished to do so, subject to the following
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| 16 | * conditions:
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| 17 | *
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| 18 | * The above copyright notice and this permission notice shall be
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| 19 | * included in all copies or substantial portions of the Software.
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| 20 | *
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| 21 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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| 22 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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| 23 | * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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| 24 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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| 25 | * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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| 26 | * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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| 27 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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| 28 | * OTHER DEALINGS IN THE SOFTWARE.
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| 29 | */
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| 30 |
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| 31 | #ifndef VBOX_INCLUDED_VBoxLnxModInline_h
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| 32 | #define VBOX_INCLUDED_VBoxLnxModInline_h
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| 33 | #ifndef RT_WITHOUT_PRAGMA_ONCE
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| 34 | # pragma once
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| 35 | #endif
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| 36 |
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| 37 | # include <linux/module.h>
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| 38 | # include <linux/types.h>
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| 39 |
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| 40 | /** Disable automatic module loading. */
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| 41 | static int g_fDisabled = -1;
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| 42 | MODULE_PARM_DESC(disabled, "Disable automatic module loading");
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| 43 | module_param_named(disabled, g_fDisabled, int, 0400);
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| 44 |
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| 45 | /**
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| 46 | * Check if module loading was explicitly disabled.
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| 47 | *
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| 48 | * Usually module loading can be disabled by
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| 49 | * specifying mod_name.disabled=1 in kernel command line.
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| 50 | *
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| 51 | * @returns True if modules loading was disabled, False otherwise.
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| 52 | */
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| 53 | static inline bool vbox_mod_should_load(void)
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| 54 | {
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| 55 | bool fShouldLoad = (g_fDisabled != 1);
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| 56 |
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| 57 | /* Print message into dmesg log if module loading was disabled. */
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| 58 | if (!fShouldLoad)
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| 59 | printk(KERN_WARNING "%s: automatic module loading disabled in kernel command line\n",
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| 60 | module_name(THIS_MODULE));
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| 61 |
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| 62 | return fShouldLoad;
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| 63 | }
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| 64 |
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| 65 | #endif /* !VBOX_INCLUDED_VBoxLnxModInline_h */
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| 66 |
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