Adding own fcntl

Dear list, So, IllumOS OpenZFS has fcntl(F_FREESP), and even though XNU does not have it, the testing environment uses it for some of its tests. So I do not need it, but thought it would be "amusing" to support it anyway. I define the standard: #define F_FREESP_IOC _IOW('Z', 11, struct flock) #

Re: Adding own fcntl

Ah ok, so the code in libsyscall/wrappers/cancelable/fcntl-base.c has a switch() with a large list of fcntls that are to be handled as "void *" and everything else is int *. All the void * entries listed there, is handled in bsd/kern/kern_descrip.c, and will not reach the default case. So I can