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| 3 | * This module emits "Hello, world" on printk when loaded.
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| 4 | *
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| 5 | * It is designed to be used for basic evaluation of the module loading
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| 6 | * subsystem (for example when validating module signing/verification). It
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| 7 | * lacks any extra dependencies, and will not normally be loaded by the
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| 8 | * system unless explicitly requested by name.
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| 9 |
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| 10 |
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| 11 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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| 12 |
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| 13 | #include <linux/init.h>
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| 14 | #include <linux/module.h>
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| 15 | #include <linux/printk.h>
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| 16 |
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| 17 | static int __init test_module_init(void)
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| 18 | {
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| 19 | pr_warn("Hello, world\n");
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| 20 |
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| 21 | return 0;
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| 22 | }
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| 23 |
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| 24 | module_init(test_module_init);
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| 25 |
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| 26 | static void __exit test_module_exit(void)
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| 27 | {
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| 28 | pr_warn("Goodbye\n");
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| 29 | }
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| 30 |
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| 31 | module_exit(test_module_exit);
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| 32 |
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| 33 | MODULE_AUTHOR("Kees Cook <[email protected]>");
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| 34 | MODULE_LICENSE("GPL");
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