diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/randutils.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/lib/randutils.c b/lib/randutils.c index e1c4059e1..02c3d9eb0 100644 --- a/lib/randutils.c +++ b/lib/randutils.c @@ -36,6 +36,8 @@ #if !defined(HAVE_GETRANDOM) && defined(SYS_getrandom) /* libc without function, but we have syscal */ +#define GRND_NONBLOCK 0x01 +#define GRND_RANDOM 0x02 static int getrandom(void *buf, size_t buflen, unsigned int flags) { return (syscall(SYS_getrandom, buf, buflen, flags)); @@ -104,13 +106,15 @@ void random_get_bytes(void *buf, size_t nbytes) int x; errno = 0; - x = getrandom(cp, n, 0); + x = getrandom(cp, n, GRND_NONBLOCK); if (x > 0) { /* success */ n -= x; cp += x; lose_counter = 0; } else if (errno == ENOSYS) /* kernel without getrandom() */ break; + else if (errno == EAGAIN) + break; else if (lose_counter++ > 16) /* entropy problem? */ break; } |