chardev: add memory (ringbuf) support to qapi

[qemu.git] / qemu-char.c

diff --git a/qemu-char.c b/qemu-char.c
index c3d44207da1351e36c8b58ade33d78da39927d06..eb2045a5da96efa9d5674ac91e1e5ee752d5a20f 100644 (file)
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -841,11 +841,11 @@ static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
     return chr;
 }
 
-static CharDriverState *qemu_chr_open_pipe(QemuOpts *opts)
+static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
 {
     int fd_in, fd_out;
     char filename_in[256], filename_out[256];
-    const char *filename = qemu_opt_get(opts, "path");
+    const char *filename = opts->device;
 
     if (filename == NULL) {
         fprintf(stderr, "chardev: pipe: no filename given\n");
@@ -1917,9 +1917,9 @@ static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
 }
 
 
-static CharDriverState *qemu_chr_open_win_pipe(QemuOpts *opts)
+static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
 {
-    const char *filename = qemu_opt_get(opts, "path");
+    const char *filename = opts->device;
     CharDriverState *chr;
     WinCharState *s;
 
@@ -2884,7 +2884,8 @@ static void ringbuf_chr_close(struct CharDriverState *chr)
     chr->opaque = NULL;
 }
 
-static CharDriverState *qemu_chr_open_ringbuf(QemuOpts *opts)
+static CharDriverState *qemu_chr_open_ringbuf(ChardevRingbuf *opts,
+                                              Error **errp)
 {
     CharDriverState *chr;
     RingBufCharDriver *d;
@@ -2892,14 +2893,11 @@ static CharDriverState *qemu_chr_open_ringbuf(QemuOpts *opts)
     chr = g_malloc0(sizeof(CharDriverState));
     d = g_malloc(sizeof(*d));
 
-    d->size = qemu_opt_get_size(opts, "size", 0);
-    if (d->size == 0) {
-        d->size = 65536;
-    }
+    d->size = opts->has_size ? opts->size : 65536;
 
     /* The size must be power of 2 */
     if (d->size & (d->size - 1)) {
-        error_report("size of ringbuf device must be power of two");
+        error_setg(errp, "size of ringbuf chardev must be power of two");
         goto fail;
     }
 
@@ -3188,6 +3186,33 @@ static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
     backend->parallel->device = g_strdup(device);
 }
 
+static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
+                                Error **errp)
+{
+    const char *device = qemu_opt_get(opts, "path");
+
+    if (device == NULL) {
+        error_setg(errp, "chardev: pipe: no device path given");
+        return;
+    }
+    backend->pipe = g_new0(ChardevHostdev, 1);
+    backend->pipe->device = g_strdup(device);
+}
+
+static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
+                                   Error **errp)
+{
+    int val;
+
+    backend->memory = g_new0(ChardevRingbuf, 1);
+
+    val = qemu_opt_get_number(opts, "size", 0);
+    if (val != 0) {
+        backend->memory->has_size = true;
+        backend->memory->size = val;
+    }
+}
+
 typedef struct CharDriver {
     const char *name;
     /* old, pre qapi */
@@ -3677,6 +3702,9 @@ ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
     case CHARDEV_BACKEND_KIND_PARALLEL:
         chr = qmp_chardev_open_parallel(backend->parallel, errp);
         break;
+    case CHARDEV_BACKEND_KIND_PIPE:
+        chr = qemu_chr_open_pipe(backend->pipe);
+        break;
     case CHARDEV_BACKEND_KIND_SOCKET:
         chr = qmp_chardev_open_socket(backend->socket, errp);
         break;
@@ -3713,6 +3741,20 @@ ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
         chr = qemu_chr_open_win_con();
         break;
 #endif
+#ifdef CONFIG_SPICE
+    case CHARDEV_BACKEND_KIND_SPICEVMC:
+        chr = qemu_chr_open_spice_vmc(backend->spicevmc->type);
+        break;
+    case CHARDEV_BACKEND_KIND_SPICEPORT:
+        chr = qemu_chr_open_spice_port(backend->spiceport->fqdn);
+        break;
+#endif
+    case CHARDEV_BACKEND_KIND_VC:
+        chr = vc_init(backend->vc);
+        break;
+    case CHARDEV_BACKEND_KIND_MEMORY:
+        chr = qemu_chr_open_ringbuf(backend->memory, errp);
+        break;
     default:
         error_setg(errp, "unknown chardev backend (%d)", backend->kind);
         break;
@@ -3755,7 +3797,8 @@ static void register_types(void)
     register_char_driver_qapi("null", CHARDEV_BACKEND_KIND_NULL, NULL);
     register_char_driver("socket", qemu_chr_open_socket);
     register_char_driver("udp", qemu_chr_open_udp);
-    register_char_driver("memory", qemu_chr_open_ringbuf);
+    register_char_driver_qapi("memory", CHARDEV_BACKEND_KIND_MEMORY,
+                              qemu_chr_parse_ringbuf);
     register_char_driver_qapi("file", CHARDEV_BACKEND_KIND_FILE,
                               qemu_chr_parse_file_out);
     register_char_driver_qapi("stdio", CHARDEV_BACKEND_KIND_STDIO,
@@ -3770,11 +3813,8 @@ static void register_types(void)
                               qemu_chr_parse_parallel);
     register_char_driver_qapi("pty", CHARDEV_BACKEND_KIND_PTY, NULL);
     register_char_driver_qapi("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL);
-#ifdef _WIN32
-    register_char_driver("pipe", qemu_chr_open_win_pipe);
-#else
-    register_char_driver("pipe", qemu_chr_open_pipe);
-#endif
+    register_char_driver_qapi("pipe", CHARDEV_BACKEND_KIND_PIPE,
+                              qemu_chr_parse_pipe);
 }
 
 type_init(register_types);