aboutsummaryrefslogtreecommitdiffstats
path: root/qemu-config.c
diff options
context:
space:
mode:
authorGerd Hoffmann <kraxel@redhat.com>2009-12-08 13:11:34 +0100
committerAnthony Liguori <aliguori@us.ibm.com>2009-12-12 07:59:40 -0600
commitd0fef6fbea36c62d29f3e3fa2214b7b52322983e (patch)
tree2ed09f38bb5d2f93fafd33803b92e305608da19c /qemu-config.c
parent458fb6792d834474c6b289738b6bf9601fad87ab (diff)
qdev: add command line option to set global defaults for properties.
This patch adds infrastructure and command line option for setting global defaults for device properties, i.e. you can for example use -global virtio-blk-pci.vectors=0 to turn off msi by default for all virtio block devices. The config file syntax is: [global] driver = "virtio-blk-pci" property = "vectors" value = "0" This can also be used to set properties for devices which are not created via -device but implicitly via machine init, i.e. -global isa-fdc,driveA=<name> This patch uses the mechanism which configures properties for the compatibility machine types (pc-0.10 & friends). The command line takes precedence over the machine type values. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'qemu-config.c')
-rw-r--r--qemu-config.c56
1 files changed, 56 insertions, 0 deletions
diff --git a/qemu-config.c b/qemu-config.c
index 92b5363ec..a23b1256e 100644
--- a/qemu-config.c
+++ b/qemu-config.c
@@ -2,6 +2,7 @@
#include "qemu-option.h"
#include "qemu-config.h"
#include "sysemu.h"
+#include "hw/qdev.h"
QemuOptsList qemu_drive_opts = {
.name = "drive",
@@ -205,6 +206,24 @@ QemuOptsList qemu_rtc_opts = {
},
};
+QemuOptsList qemu_global_opts = {
+ .name = "global",
+ .head = QTAILQ_HEAD_INITIALIZER(qemu_global_opts.head),
+ .desc = {
+ {
+ .name = "driver",
+ .type = QEMU_OPT_STRING,
+ },{
+ .name = "property",
+ .type = QEMU_OPT_STRING,
+ },{
+ .name = "value",
+ .type = QEMU_OPT_STRING,
+ },
+ { /* end if list */ }
+ },
+};
+
static QemuOptsList *lists[] = {
&qemu_drive_opts,
&qemu_chardev_opts,
@@ -212,6 +231,7 @@ static QemuOptsList *lists[] = {
&qemu_netdev_opts,
&qemu_net_opts,
&qemu_rtc_opts,
+ &qemu_global_opts,
NULL,
};
@@ -260,6 +280,42 @@ int qemu_set_option(const char *str)
return 0;
}
+int qemu_global_option(const char *str)
+{
+ char driver[64], property[64];
+ QemuOpts *opts;
+ int rc, offset;
+
+ rc = sscanf(str, "%63[^.].%63[^=]%n", driver, property, &offset);
+ if (rc < 2 || str[offset] != '=') {
+ qemu_error("can't parse: \"%s\"\n", str);
+ return -1;
+ }
+
+ opts = qemu_opts_create(&qemu_global_opts, NULL, 0);
+ qemu_opt_set(opts, "driver", driver);
+ qemu_opt_set(opts, "property", property);
+ qemu_opt_set(opts, "value", str+offset+1);
+ return 0;
+}
+
+static int qemu_add_one_global(QemuOpts *opts, void *opaque)
+{
+ GlobalProperty *g;
+
+ g = qemu_mallocz(sizeof(*g));
+ g->driver = qemu_opt_get(opts, "driver");
+ g->property = qemu_opt_get(opts, "property");
+ g->value = qemu_opt_get(opts, "value");
+ qdev_prop_register_global(g);
+ return 0;
+}
+
+void qemu_add_globals(void)
+{
+ qemu_opts_foreach(&qemu_global_opts, qemu_add_one_global, NULL, 0);
+}
+
struct ConfigWriteData {
QemuOptsList *list;
FILE *fp;