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krun_set_root_disk_remount

libkrun_sys

Function krun_set_root_disk_remount 

Source 
pub unsafe extern "C" fn krun_set_root_disk_remount(
    ctx_id: u32,
    device: *const c_char,
    fstype: *const c_char,
    options: *const c_char,
) -> i32
Expand description

Configure a root filesystem backed by a block device with automatic remount.

This allows booting from a disk image without needing to copy the init binary into the disk. Libkrun creates a dummy virtiofs root, executes init from it, and then switches to the disk-based root.

Arguments:

  • ctx_id: Configuration context ID
  • device: Block device path (e.g., “/dev/vda”, must be a previously configured block device)
  • fstype: Filesystem type (e.g., “ext4”, can be “auto” or NULL)
  • options: Comma-separated mount options (can be NULL)