Commit fbdcec5c authored by Amos Kong's avatar Amos Kong Committed by Paolo Bonzini
Browse files

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: default avatarAmos Kong <akong@redhat.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 60aad298

backends/rng-egd.c

+3 −1
Original line number Diff line number Diff line
@@ -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;