Re: [PATCH] um: seed rng using host OS rng

Johannes Berg
2022-07-13T07:05:13Z

On Wed, 2022-07-13 at 01:27 +0200, Jason A. Donenfeld wrote:
>
> +++ b/arch/um/include/shared/os.h
> @@ -11,6 +11,12 @@
> #include <irq_user.h>
> #include <longjmp.h>
> #include <mm_id.h>
> +/* This is to get size_t */
> +#ifndef __UM_HOST__
> +#include <linux/types.h>
> +#else
> +#include <stddef.h>
> +#endif
>
> #define CATCH_EINTR(expr) while ((errno = 0, ((expr) < 0)) && (errno == EINTR))
>
> @@ -243,6 +249,7 @@ extern void stack_protections(unsigned long address);
> extern int raw(int fd);
> extern void setup_machinename(char *machine_out);
> extern void setup_hostinfo(char *buf, int len);
> +extern ssize_t os_getrandom(void *buf, size_t len, unsigned int flags);

For me, this doesn't compile, and per the man-page on my system, ssize_t
requires <sys/types.h>, not <stddef.h>?

johannes