This patch to klibc provides run-init on modern Ubuntu systems.

This patch to klibc provides run-init on modern Ubuntu systems.

• A. initramfs-hack
• B. runinit.patch
• C. klibc-horsepill.patch
• D. patch_klibc

Answer: (C)

Run-init is a small launcher used in initramfs to start the real init process once the initial environment is up. On modern Ubuntu, enabling this boot flow requires extending the klibc library with a run-init implementation so the initramfs can hand control to the actual init. The patch named klibc-horsepill.patch is the one that adds this run-init capability to klibc, which is why it’s the correct choice. The other patch names don’t specifically indicate adding run-init support to klibc, so they don’t fit the requirement.

Run-init is a small launcher used in initramfs to start the real init process once the initial environment is up. On modern Ubuntu, enabling this boot flow requires extending the klibc library with a run-init implementation so the initramfs can hand control to the actual init.

The patch named klibc-horsepill.patch is the one that adds this run-init capability to klibc, which is why it’s the correct choice. The other patch names don’t specifically indicate adding run-init support to klibc, so they don’t fit the requirement.