I'm porting some C code that does manual filesystem "extent" file space management from Linux to Darwin (and into Go).
The Linux fallocate() call and its FALLOC_FL_INSERT_RANGE operation are not directly available on Darwin, but suggestions from StackOverflow indicate that fcntl(2) with F_PREALLOCATE might be a close substitute. It seems to be working. Full code here in this playground, but I have a couple of questions-- https://go.dev/play/p/Z5JB__fUBpI Can I get away without the runtime.Pinner? (Am I still safe from 'store' being pre-maturely garbage collected without the pin, since Go memory has been converted to an uintptr before calling unix.Syscall()) Is there a more appropriate way to call fcntl() (on Darwin)? Thanks for any guidance here. Jason -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion visit https://groups.google.com/d/msgid/golang-nuts/93a46345-3e28-4442-a0e7-b08b8811cf6en%40googlegroups.com.
