VIRTUAL_OSS_OPTIONS_MAX
data.options[VIRTUAL_OSS_OPTIONS_MAX - 1] = 0;
char options[VIRTUAL_OSS_OPTIONS_MAX];
strlcpy(str, ptrerr, VIRTUAL_OSS_OPTIONS_MAX);
#define VIRTUAL_OSS_ADD_OPTIONS _IOWR('O', 33, char [VIRTUAL_OSS_OPTIONS_MAX])
char options[VIRTUAL_OSS_OPTIONS_MAX] = {};
size_t len = VIRTUAL_OSS_OPTIONS_MAX - 1;