From fbdcec5c487685b46e78f1e40a236ebf83f862fa Mon Sep 17 00:00:00 2001 From: Amos Kong Date: Thu, 21 Nov 2013 16:42:51 +0800 Subject: [PATCH] rng-egd: offset the point when repeatedly read from the buffer The buffer content might be read out more than once, currently we just repeatedly read the first data block, buffer offset is missing. Cc: qemu-stable@nongnu.org Signed-off-by: Amos Kong Signed-off-by: Paolo Bonzini --- backends/rng-egd.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/backends/rng-egd.c b/backends/rng-egd.c index 6f56f9e4e4..25bb3b453b 100644 --- a/backends/rng-egd.c +++ b/backends/rng-egd.c @@ -91,12 +91,14 @@ static int rng_egd_chr_can_read(void *opaque) static void rng_egd_chr_read(void *opaque, const uint8_t *buf, int size) { RngEgd *s = RNG_EGD(opaque); + size_t buf_offset = 0; while (size > 0 && s->requests) { RngRequest *req = s->requests->data; int len = MIN(size, req->size - req->offset); - memcpy(req->data + req->offset, buf, len); + memcpy(req->data + req->offset, buf + buf_offset, len); + buf_offset += len; req->offset += len; size -= len; -- 2.11.0