[Qemu-devel] [PATCH 09/11] chardev: add parport chardev support to chardev-add (qmp)

[Gerd Hoffmann <kraxel@redhat.com>]

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 qapi-schema.json |    3 ++-
 qemu-char.c      |   43 +++++++++++++++++++++++++++----------------
 2 files changed, 29 insertions(+), 17 deletions(-)

diff --git a/qapi-schema.json b/qapi-schema.json
index d833385..0922823 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -3037,7 +3037,8 @@
                                    'out' : 'ChardevFileSource' } }
 
 { 'enum': 'ChardevPortKind', 'data': [ 'tty',
-                                       'serial' ] }
+                                       'serial',
+                                       'parport' ] }
 
 { 'type': 'ChardevPort', 'data': { 'device' : 'ChardevFileSource',
                                    'type'   : 'ChardevPortKind'} }
diff --git a/qemu-char.c b/qemu-char.c
index 4232fea..5cbf44e 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -1367,17 +1367,10 @@ static void pp_close(CharDriverState *chr)
     qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
 }
 
-static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
+static CharDriverState *qemu_chr_open_pp_fd(int fd)
 {
-    const char *filename = qemu_opt_get(opts, "path");
     CharDriverState *chr;
     ParallelCharDriver *drv;
-    int fd;
-
-    TFR(fd = qemu_open(filename, O_RDWR));
-    if (fd < 0) {
-        return NULL;
-    }
 
     if (ioctl(fd, PPCLAIM) < 0) {
         close(fd);
@@ -1441,16 +1434,9 @@ static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
     return 0;
 }
 
-static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
+static CharDriverState *qemu_chr_open_pp_fd(int fd)
 {
-    const char *filename = qemu_opt_get(opts, "path");
     CharDriverState *chr;
-    int fd;
-
-    fd = qemu_open(filename, O_RDWR);
-    if (fd < 0) {
-        return NULL;
-    }
 
     chr = g_malloc0(sizeof(CharDriverState));
     chr->opaque = (void *)(intptr_t)fd;
@@ -2750,6 +2736,22 @@ fail:
     return NULL;
 }
 
+#ifdef HAVE_CHARDEV_PARPORT
+
+static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
+{
+    const char *filename = qemu_opt_get(opts, "path");
+    int fd;
+
+    fd = qemu_open(filename, O_RDWR);
+    if (fd < 0) {
+        return NULL;
+    }
+    return qemu_chr_open_pp_fd(fd);
+}
+
+#endif
+
 static const struct {
     const char *name;
     CharDriverState *(*open)(QemuOpts *opts);
@@ -3053,6 +3055,15 @@ static CharDriverState *qmp_chardev_open_port(ChardevPort *port, Error **errp)
         }
         return qemu_chr_open_tty_fd(fd);
 #endif
+#ifdef HAVE_CHARDEV_PARPORT
+    case CHARDEV_PORT_KIND_PARPORT:
+        flags = O_RDWR;
+        fd = qmp_chardev_open_file_source(port->device, flags, errp);
+        if (error_is_set(errp)) {
+            return NULL;
+        }
+        return qemu_chr_open_pp_fd(fd);
+#endif
     default:
         error_setg(errp, "unknown chardev port (%d)", port->type);
         return NULL;
-- 
1.7.1