On Wed, Jun 9, 2021 at 11:16 PM Enrico Weigelt, metux IT consult <lkml@xxxxxxxxx> wrote: > > On 08.06.21 14:41, Peng Tao wrote: > > Hi, > Hi, > > The initial RFC mail in the thread has a userspace example code. Does > > it make sense to you? > > Sorry, I had missed that, now found it. > > There're some things I don't quite understand: > > * it just stores fd's I don't see anything where it is actually returned > to some open() operation. The FUSE_DEV_IOC_RESTORE_FD ioctl returns the opened fd to a different process. > * the store is machine wide global - everybody uses the same number > space, dont see any kind of access conrol ... how about security ? > The idea is that anyone capable of opening /dev/fuse can retrieve the FD. > I don't believe that just storing the fd's somewhere is really helpful > for that purpose - the fuse server shall be able to reply the open() > request with an fd, which then is directly transferred to the client. > Could you describe your use case a bit? How does your client talk to your server? Through open syscall or through some process-to-process RPC calls? Cheers, Tao -- Into Sth. Rich & Strange
