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Date: Wed, 28 Jan 2015 10:02:12 +0100
From: Szabolcs Nagy <nsz@...t70.net>
To: musl@...ts.openwall.com
Subject: Re: getrandom syscall
* Daniel Cegie??ka <daniel.cegielka@...il.com> [2015-01-27 23:12:46 +0100]:
> #include <stddef.h>
> #include <errno.h>
> #include "syscall.h"
>
#ifdef SYS_getrandom
> int getrandom(void *buf, size_t len)
> {
> int ret, pre_errno = errno;
>
> if (len > 256) {
> errno = EIO;
> return -1;
> }
> do {
> ret = syscall(SYS_getrandom, buf, len, 0);
> } while (ret == -1 && errno == EINTR);
> if (ret != len)
> return -1;
> errno = pre_errno;
> return 0;
> }
#endif
eg sh does not have the syscall (linux is not consistent with
syscalls for whatever reason)
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