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qdev: Add help for device properties

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Option "-device DRIVER,?" and monitor command "device_add DRIVER,?"
print the supported properties instead of creating a device.  The
former also terminates the program.

This is commit 2ba6edf0 (just reverted) done right.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Markus Armbruster 2010-01-29 19:49:00 +01:00 committed by Anthony Liguori
parent 5137b6accd
commit 08350cf06a
1 changed files with 14 additions and 1 deletions
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15
hw/qdev.c
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@ -158,6 +158,7 @@ int qdev_device_help(QemuOpts *opts)
const char *driver;
DeviceInfo *info;
char msg[256];
Property *prop;
driver = qemu_opt_get(opts, "driver");
if (driver && !strcmp(driver, "?")) {
@ -168,7 +169,19 @@ int qdev_device_help(QemuOpts *opts)
return 1;
}
return 0;
if (!qemu_opt_get(opts, "?")) {
return 0;
}
info = qdev_find_info(NULL, driver);
if (!info) {
return 0;
}
for (prop = info->props; prop && prop->name; prop++) {
qemu_error("%s.%s\n", info->name, prop->name);
}
return 1;
}
DeviceState *qdev_device_add(QemuOpts *opts)