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lib/launch-direct.c: Assume virtio-rng

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It's always a good idea to provide proper entropy to the libguestfs
appliance (eg. for any cryptographic operations).  We already assume
virtio, so we can assume virtio-rng is present.
This commit is contained in:
Richard W.M. Jones
2025-09-29 13:24:38 +01:00
committed by rwmjones
parent d8b08eac38
commit 4872c0cf09
1 changed files with 10 additions and 16 deletions
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26
lib/launch-direct.c
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@@ -685,22 +685,16 @@ launch_direct (guestfs_h *g, void *datav, const char *arg)
arg ("-kernel", kernel);
arg ("-initrd", initrd);
/* Add a random number generator (backend for virtio-rng). This
* isn't strictly necessary but means we won't need to hang around
* when needing entropy.
*/
if (guestfs_int_qemu_supports_device (g, data->qemu_data,
VIRTIO_DEVICE_NAME ("virtio-rng"))) {
start_list ("-object") {
append_list ("rng-random");
append_list ("filename=/dev/urandom");
append_list ("id=rng0");
} end_list ();
start_list ("-device") {
append_list (VIRTIO_DEVICE_NAME ("virtio-rng"));
append_list ("rng=rng0");
} end_list ();
}
/* Add a good source of entropy, eg for cryptographic operations. */
start_list ("-object") {
append_list ("rng-random");
append_list ("filename=/dev/urandom");
append_list ("id=rng0");
} end_list ();
start_list ("-device") {
append_list (VIRTIO_DEVICE_NAME ("virtio-rng"));
append_list ("rng=rng0");
} end_list ();
/* Create the virtio-scsi bus. */
start_list ("-device") {