[PULL 064/113] vl: extract default devices to separate functions

[Paolo Bonzini <pbonzini@redhat.com>]

Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 softmmu/vl.c | 216 +++++++++++++++++++++++++++------------------------
 1 file changed, 114 insertions(+), 102 deletions(-)

diff --git a/softmmu/vl.c b/softmmu/vl.c
index cb4b870f09..1a80a9a68d 100644
--- a/softmmu/vl.c
+++ b/softmmu/vl.c
@@ -125,7 +125,9 @@ static const char *boot_order;
 static const char *boot_once;
 static const char *incoming;
 static const char *loadvm;
+static int display_remote;
 static QemuPluginList plugin_list = QTAILQ_HEAD_INITIALIZER(plugin_list);
+static bool nographic = false;
 enum vga_retrace_method vga_retrace_method = VGA_RETRACE_DUMB;
 static int mem_prealloc; /* force preallocation of physical target memory */
 int display_opengl;
@@ -147,6 +149,7 @@ static int rtc_host_datetime_offset = -1; /* valid & used only with
                                              RTC_BASE_DATETIME */
 QEMUClockType rtc_clock;
 int vga_interface_type = VGA_NONE;
+static const char *vga_model = NULL;
 static DisplayOptions dpy;
 static int num_serial_hds;
 static Chardev **serial_hds;
@@ -2224,6 +2227,115 @@ static int foreach_device_config(int type, int (*func)(const char *cmdline))
     return 0;
 }
 
+static void qemu_disable_default_devices(void)
+{
+    MachineClass *machine_class = MACHINE_GET_CLASS(current_machine);
+
+    qemu_opts_foreach(qemu_find_opts("device"),
+                      default_driver_check, NULL, NULL);
+    qemu_opts_foreach(qemu_find_opts("global"),
+                      default_driver_check, NULL, NULL);
+
+    if (!vga_model && !default_vga) {
+        vga_interface_type = VGA_DEVICE;
+    }
+    if (!has_defaults || machine_class->no_serial) {
+        default_serial = 0;
+    }
+    if (!has_defaults || machine_class->no_parallel) {
+        default_parallel = 0;
+    }
+    if (!has_defaults || machine_class->no_floppy) {
+        default_floppy = 0;
+    }
+    if (!has_defaults || machine_class->no_cdrom) {
+        default_cdrom = 0;
+    }
+    if (!has_defaults || machine_class->no_sdcard) {
+        default_sdcard = 0;
+    }
+    if (!has_defaults) {
+        default_monitor = 0;
+        default_net = 0;
+        default_vga = 0;
+    }
+}
+
+static void qemu_create_default_devices(void)
+{
+    MachineClass *machine_class = MACHINE_GET_CLASS(current_machine);
+
+    if (is_daemonized()) {
+        /* According to documentation and historically, -nographic redirects
+         * serial port, parallel port and monitor to stdio, which does not work
+         * with -daemonize.  We can redirect these to null instead, but since
+         * -nographic is legacy, let's just error out.
+         * We disallow -nographic only if all other ports are not redirected
+         * explicitly, to not break existing legacy setups which uses
+         * -nographic _and_ redirects all ports explicitly - this is valid
+         * usage, -nographic is just a no-op in this case.
+         */
+        if (nographic
+            && (default_parallel || default_serial || default_monitor)) {
+            error_report("-nographic cannot be used with -daemonize");
+            exit(1);
+        }
+    }
+
+    if (nographic) {
+        if (default_parallel)
+            add_device_config(DEV_PARALLEL, "null");
+        if (default_serial && default_monitor) {
+            add_device_config(DEV_SERIAL, "mon:stdio");
+        } else {
+            if (default_serial)
+                add_device_config(DEV_SERIAL, "stdio");
+            if (default_monitor)
+                monitor_parse("stdio", "readline", false);
+        }
+    } else {
+        if (default_serial)
+            add_device_config(DEV_SERIAL, "vc:80Cx24C");
+        if (default_parallel)
+            add_device_config(DEV_PARALLEL, "vc:80Cx24C");
+        if (default_monitor)
+            monitor_parse("vc:80Cx24C", "readline", false);
+    }
+
+    if (default_net) {
+        QemuOptsList *net = qemu_find_opts("net");
+        qemu_opts_parse(net, "nic", true, &error_abort);
+#ifdef CONFIG_SLIRP
+        qemu_opts_parse(net, "user", true, &error_abort);
+#endif
+    }
+
+#if defined(CONFIG_VNC)
+    if (!QTAILQ_EMPTY(&(qemu_find_opts("vnc")->head))) {
+        display_remote++;
+    }
+#endif
+    if (dpy.type == DISPLAY_TYPE_DEFAULT && !display_remote) {
+        if (!qemu_display_find_default(&dpy)) {
+            dpy.type = DISPLAY_TYPE_NONE;
+#if defined(CONFIG_VNC)
+            vnc_parse("localhost:0,to=99,id=default", &error_abort);
+#endif
+        }
+    }
+    if (dpy.type == DISPLAY_TYPE_DEFAULT) {
+        dpy.type = DISPLAY_TYPE_NONE;
+    }
+
+    /* If no default VGA is requested, the default is "none".  */
+    if (default_vga) {
+        vga_model = get_default_vga_model(machine_class);
+    }
+    if (vga_model) {
+        select_vgahw(machine_class, vga_model);
+    }
+}
+
 static int serial_parse(const char *devname)
 {
     int index = num_serial_hds;
@@ -3208,10 +3320,7 @@ void qemu_init(int argc, char **argv, char **envp)
     int optind;
     const char *optarg;
     MachineClass *machine_class;
-    const char *vga_model = NULL;
     bool userconfig = true;
-    bool nographic = false;
-    int display_remote = 0;
     ram_addr_t maxram_size;
     uint64_t ram_slots = 0;
     FILE *vmstate_dump_file = NULL;
@@ -4187,97 +4296,8 @@ void qemu_init(int argc, char **argv, char **envp)
                                machine_class->default_machine_opts, 0);
     }
 
-    qemu_opts_foreach(qemu_find_opts("device"),
-                      default_driver_check, NULL, NULL);
-    qemu_opts_foreach(qemu_find_opts("global"),
-                      default_driver_check, NULL, NULL);
-
-    if (!vga_model && !default_vga) {
-        vga_interface_type = VGA_DEVICE;
-    }
-    if (!has_defaults || machine_class->no_serial) {
-        default_serial = 0;
-    }
-    if (!has_defaults || machine_class->no_parallel) {
-        default_parallel = 0;
-    }
-    if (!has_defaults || machine_class->no_floppy) {
-        default_floppy = 0;
-    }
-    if (!has_defaults || machine_class->no_cdrom) {
-        default_cdrom = 0;
-    }
-    if (!has_defaults || machine_class->no_sdcard) {
-        default_sdcard = 0;
-    }
-    if (!has_defaults) {
-        default_monitor = 0;
-        default_net = 0;
-        default_vga = 0;
-    }
-
-    if (is_daemonized()) {
-        /* According to documentation and historically, -nographic redirects
-         * serial port, parallel port and monitor to stdio, which does not work
-         * with -daemonize.  We can redirect these to null instead, but since
-         * -nographic is legacy, let's just error out.
-         * We disallow -nographic only if all other ports are not redirected
-         * explicitly, to not break existing legacy setups which uses
-         * -nographic _and_ redirects all ports explicitly - this is valid
-         * usage, -nographic is just a no-op in this case.
-         */
-        if (nographic
-            && (default_parallel || default_serial || default_monitor)) {
-            error_report("-nographic cannot be used with -daemonize");
-            exit(1);
-        }
-    }
-
-    if (nographic) {
-        if (default_parallel)
-            add_device_config(DEV_PARALLEL, "null");
-        if (default_serial && default_monitor) {
-            add_device_config(DEV_SERIAL, "mon:stdio");
-        } else {
-            if (default_serial)
-                add_device_config(DEV_SERIAL, "stdio");
-            if (default_monitor)
-                monitor_parse("stdio", "readline", false);
-        }
-    } else {
-        if (default_serial)
-            add_device_config(DEV_SERIAL, "vc:80Cx24C");
-        if (default_parallel)
-            add_device_config(DEV_PARALLEL, "vc:80Cx24C");
-        if (default_monitor)
-            monitor_parse("vc:80Cx24C", "readline", false);
-    }
-
-    if (default_net) {
-        QemuOptsList *net = qemu_find_opts("net");
-        qemu_opts_parse(net, "nic", true, &error_abort);
-#ifdef CONFIG_SLIRP
-        qemu_opts_parse(net, "user", true, &error_abort);
-#endif
-    }
-
-#if defined(CONFIG_VNC)
-    if (!QTAILQ_EMPTY(&(qemu_find_opts("vnc")->head))) {
-        display_remote++;
-    }
-#endif
-    if (dpy.type == DISPLAY_TYPE_DEFAULT && !display_remote) {
-        if (!qemu_display_find_default(&dpy)) {
-            dpy.type = DISPLAY_TYPE_NONE;
-#if defined(CONFIG_VNC)
-            vnc_parse("localhost:0,to=99,id=default", &error_abort);
-#endif
-        }
-    }
-    if (dpy.type == DISPLAY_TYPE_DEFAULT) {
-        dpy.type = DISPLAY_TYPE_NONE;
-    }
-
+    qemu_disable_default_devices();
+    qemu_create_default_devices();
     if ((alt_grab || ctrl_grab) && dpy.type != DISPLAY_TYPE_SDL) {
         error_report("-alt-grab and -ctrl-grab are only valid "
                      "for SDL, ignoring option");
@@ -4423,14 +4443,6 @@ void qemu_init(int argc, char **argv, char **envp)
     qemu_semihosting_connect_chardevs();
     qemu_semihosting_console_init();
 
-    /* If no default VGA is requested, the default is "none".  */
-    if (default_vga) {
-        vga_model = get_default_vga_model(machine_class);
-    }
-    if (vga_model) {
-        select_vgahw(machine_class, vga_model);
-    }
-
     /* This checkpoint is required by replay to separate prior clock
        reading from the other reads, because timer polling functions query
        clock values from the log. */
-- 
2.26.2