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...ern int *bind_vsock (size_t *) + __attribute__((__nonnull__ (1))); extern void accept_incoming_connections (int *socks, size_t nr_socks) __attribute__((__nonnull__ (1))); extern void free_listening_sockets (int *socks, size_t nr_socks) diff --git a/server/main.c b/server/main.c index 5623149..115fa98 100644 --- a/server/main.c +++ b/server/main.c @@ -45,6 +45,11 @@ #include <syslog.h> #include <sys/types.h> #include <sys/stat.h> +#include <sys/socket.h> + +#ifdef HAVE_LINUX_VM_SOCKETS_H +#include <linux/vm_sockets.h> +#endif #include <pthread.h> @@ -8...

v1 was discussed here: https://www.redhat.com/archives/libguestfs/2019-October/thread.html#00100 v2: - Bind to VMADDR_CID_ANY (instead of HOST) and update the documentation accordingly. - Don't bother with SOCK_CLOEXEC fallback path that can never be used. Rich.

This is a series of patches to libnbd and nbdkit adding AF_VSOCK support. On the host side it allows you to start an nbdkit instance which listens on a virtio-vsock socket: $ ./nbdkit -fv --vsock memory 1G ... nbdkit: debug: bound to vsock 2:10809 On the guest side you can then use libnbd to connect to the server: $ ./run nbdsh -c 'h.connect_vsock(2, 10809)' -c

libFuzzer is Clang's fuzzer, and alternative to using AFL: https://llvm.org/docs/LibFuzzer.html I implemented an alternative method of fuzzing for libnbd earlier today and it's pretty simple: https://github.com/libguestfs/libnbd/commit/c19a6fbae9a21a7d4693418706c59e81ed256875 However it's considerably more difficult to use libFuzzer with non-library code -- in this case nbdkit.