Commit d9f7e29e authored Apr 08, 2015 by Eduardo Habkost

qemu-config: Accept empty option values



Currently it is impossible to set an option in a config file to an empty
string, because the parser matches only lines containing non-empty
strings between double-quotes.

As sscanf() "[" conversion specifier only matches non-empty strings, add
a special case for empty strings.

Reviewed-by: Eric Blake <eblake@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

parent b203a4ba

util/qemu-config.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -413,7 +413,9 @@ int qemu_config_parse(FILE fp, QemuOptsList lists, const char fname)
		opts = qemu_opts_create(list, NULL, 0, &error_abort);
		continue;
		}
		if (sscanf(line, " %63s = \"%1023[^\"]\"", arg, value) == 2) {
		value[0] = '\0';
		if (sscanf(line, " %63s = \"%1023[^\"]\"", arg, value) == 2 \|\|
		sscanf(line, " %63s = \"\"", arg) == 1) {
		/* arg = value */
		if (opts == NULL) {
		error_report("no group defined");