]> Git Repo - qemu.git/blobdiff - backends/rng-egd.c
qerror: Eliminate QERR_DEVICE_NOT_FOUND
[qemu.git] / backends / rng-egd.c
index fd41b531882987e64ee16d1b2ac017ab8f15efee..849bd7ab61a45023bb5e66781e67e9ece59c91af 100644 (file)
@@ -10,8 +10,8 @@
  * See the COPYING file in the top-level directory.
  */
 
-#include "qemu/rng.h"
-#include "char/char.h"
+#include "sysemu/rng.h"
+#include "sysemu/char.h"
 #include "qapi/qmp/qerror.h"
 #include "hw/qdev.h" /* just for DEFINE_PROP_CHR */
 
@@ -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;
 
@@ -145,7 +147,13 @@ static void rng_egd_opened(RngBackend *b, Error **errp)
 
     s->chr = qemu_chr_find(s->chr_name);
     if (s->chr == NULL) {
-        error_set(errp, QERR_DEVICE_NOT_FOUND, s->chr_name);
+        error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+                  "Device '%s' not found", s->chr_name);
+        return;
+    }
+
+    if (qemu_chr_fe_claim(s->chr) != 0) {
+        error_set(errp, QERR_DEVICE_IN_USE, s->chr_name);
         return;
     }
 
@@ -191,6 +199,7 @@ static void rng_egd_finalize(Object *obj)
 
     if (s->chr) {
         qemu_chr_add_handlers(s->chr, NULL, NULL, NULL, NULL);
+        qemu_chr_fe_release(s->chr);
     }
 
     g_free(s->chr_name);
@@ -207,7 +216,7 @@ static void rng_egd_class_init(ObjectClass *klass, void *data)
     rbc->opened = rng_egd_opened;
 }
 
-static TypeInfo rng_egd_info = {
+static const TypeInfo rng_egd_info = {
     .name = TYPE_RNG_EGD,
     .parent = TYPE_RNG_BACKEND,
     .instance_size = sizeof(RngEgd),
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