When called with property value "?",
a help text will be printed (instead of an error message).
This is useful for command lines like
qemu -device e1000,mac=?
and is already standard for other command line options.
A better help text could be provided by extending
the Property structure with a desc field.
Signed-off-by: Stefan Weil <w...@mail.berlios.de>
---
hw/qdev-properties.c | 9 +++++++--
1 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/hw/qdev-properties.c b/hw/qdev-properties.c
index 8547ad2..f5ca05f 100644
--- a/hw/qdev-properties.c
+++ b/hw/qdev-properties.c
@@ -565,8 +565,13 @@ int qdev_prop_parse(DeviceState *dev, const char *name,
const char *value)
return -1;
}
if (prop->info->parse(dev, prop, value) != 0) {
- fprintf(stderr, "property \"%s.%s\": failed to parse \"%s\"\n",
- dev->info->name, name, value);
+ if (strcmp(value, "?") != 0) {
+ fprintf(stderr, "property \"%s.%s\": failed to parse \"%s\"\n",
+ dev->info->name, name, value);
+ } else {
+ fprintf(stderr, "%s.%s=%s\n",
+ dev->info->name, name, prop->info->name);
+ }
return -1;
}
return 0;
--
1.6.5
