while (len > 0) {
last_out = MIN(len, VMC_MAX_HOST_WRITE);
- qemu_chr_read(scd->chr, p, last_out);
- if (last_out > 0) {
- out += last_out;
- len -= last_out;
- p += last_out;
- } else {
+ if (qemu_chr_can_read(scd->chr) < last_out) {
break;
}
+ qemu_chr_read(scd->chr, p, last_out);
+ out += last_out;
+ len -= last_out;
+ p += last_out;
}
dprintf(scd, 3, "%s: %lu/%zd\n", __func__, out, len + out);
fprintf(stderr, "\n");
}
-CharDriverState *qemu_chr_open_spice(QemuOpts *opts)
+int qemu_chr_open_spice(QemuOpts *opts, CharDriverState **_chr)
{
CharDriverState *chr;
SpiceCharDriver *s;
if (name == NULL) {
fprintf(stderr, "spice-qemu-char: missing name parameter\n");
print_allowed_subtypes();
- return NULL;
+ return -EINVAL;
}
for(;*psubtype != NULL; ++psubtype) {
if (strcmp(name, *psubtype) == 0) {
if (subtype == NULL) {
fprintf(stderr, "spice-qemu-char: unsupported name\n");
print_allowed_subtypes();
- return NULL;
+ return -EINVAL;
}
chr = qemu_mallocz(sizeof(CharDriverState));
qemu_chr_generic_open(chr);
- return chr;
+ *_chr = chr;
+ return 0;
}