qemu-file: add writable socket QEMUFile
Reviewed-by: Orit Wasserman <owasserm@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
diff --git a/savevm.c b/savevm.c
index 6d6f1f1..76c88c7 100644
--- a/savevm.c
+++ b/savevm.c
@@ -198,6 +198,18 @@
return len;
}
+static int socket_put_buffer(void *opaque, const uint8_t *buf, int64_t pos, int size)
+{
+ QEMUFileSocket *s = opaque;
+ ssize_t len;
+
+ len = qemu_send_full(s->fd, buf, size, 0);
+ if (len < size) {
+ len = -socket_error();
+ }
+ return len;
+}
+
static int socket_close(void *opaque)
{
QEMUFileSocket *s = opaque;
@@ -369,12 +381,29 @@
.close = socket_close
};
-QEMUFile *qemu_fopen_socket(int fd)
+static const QEMUFileOps socket_write_ops = {
+ .get_fd = socket_get_fd,
+ .put_buffer = socket_put_buffer,
+ .close = socket_close
+};
+
+QEMUFile *qemu_fopen_socket(int fd, const char *mode)
{
QEMUFileSocket *s = g_malloc0(sizeof(QEMUFileSocket));
+ if (mode == NULL ||
+ (mode[0] != 'r' && mode[0] != 'w') ||
+ mode[1] != 'b' || mode[2] != 0) {
+ fprintf(stderr, "qemu_fopen: Argument validity check failed\n");
+ return NULL;
+ }
+
s->fd = fd;
- s->file = qemu_fopen_ops(s, &socket_read_ops);
+ if (mode[0] == 'w') {
+ s->file = qemu_fopen_ops(s, &socket_write_ops);
+ } else {
+ s->file = qemu_fopen_ops(s, &socket_read_ops);
+ }
return s->file;
}