qemu-io: Make filename optional

Giving a filename is actually not essential, since it can be specified
through the options as well - on the contrary: Sometimes a filename must
not be given.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Max Reitz 2013-12-20 19:28:20 +01:00 committed by Kevin Wolf
parent 1bf20b8280
commit fd0fee34b5

View File

@ -163,11 +163,13 @@ static int open_f(BlockDriverState *bs, int argc, char **argv)
flags |= BDRV_O_RDWR;
}
if (optind != argc - 1) {
if (optind == argc - 1) {
return openfile(argv[optind], flags, growable, opts);
} else if (optind == argc) {
return openfile(NULL, flags, growable, opts);
} else {
return qemuio_command_usage(&open_cmd);
}
return openfile(argv[optind], flags, growable, opts);
}
static int quit_f(BlockDriverState *bs, int argc, char **argv)