Hi, I will try to figure it out, since its not yet implemented the syscall is a good way to start dev in BSD kernel.
Pozdrawiam, Patryk Ząbkiewicz niedz., 25 wrz 2022 o 21:15 Reinoud Zandijk <rein...@netbsd.org> napisał(a): > Hi, > > On Fri, Sep 23, 2022 at 03:51:26PM +0200, Patryk wrote: > > is this item already developed in netBSD or should I start looking into > it ? > > https://wiki.netbsd.org/projects/project/ffs-fallocate/ > > AFAIK, its not implemented yet in NetBSD. I guess it got a bit on the back > burner due to the tendency that programs detecting fallocate() missing > tend to > use truncate() for this though it of course doesn't guarantee all is > allocated. > > It shouldn't be that difficult to implement on its own but the more > difficult > part is I guess figuring out the addition of the system call, the libc stub > addition and the test code. As for the code itself, consider the code for > growing files in sys/fs/msdosfs since it does this by necessity as it > doesn't > understand holes. I am sure tech-kern@ will be happy to provide you > pointers > for the other bits. > > With regards, > Reinoud > >
