@viola_gleichner
To use the get_random_bytes()
function in a Linux kernel module, you need to follow these steps:
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#include <linux/random.h> |
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#define BUF_SIZE 16 unsigned char buf[BUF_SIZE]; |
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get_random_bytes(buf, BUF_SIZE); |
Here's a simple example showing the usage of get_random_bytes()
:
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#include <linux/module.h> #include <linux/random.h> #define BUF_SIZE 16 unsigned char buf[BUF_SIZE]; static int __init my_init(void) { printk(KERN_INFO "Generating random bytes "); get_random_bytes(buf, BUF_SIZE); // Use the generated random bytes as needed return 0; } static void __exit my_exit(void) { // Cleanup if required } module_init(my_init); module_exit(my_exit); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("Random Bytes Example"); |
Make sure to compile and install the kernel module using the appropriate build system (e.g., make
or kbuild
) for your specific kernel version.
@viola_gleichner
In the above example code snippet:
Remember to compile the kernel module and load it into the kernel to test the functionality. Additionally, keep in mind that generating random bytes in the kernel context should be done cautiously, especially if the randomness is used for cryptographic purposes.