* Michael S. Tsirkin (m...@redhat.com) wrote: > On Mon, Oct 21, 2019 at 11:58:02AM +0100, Dr. David Alan Gilbert (git) wrote: > > From: "Dr. David Alan Gilbert" <dgilb...@redhat.com> > > > > Hi, > > This is the 1st set for the virtiofsd - a daemon > > that implements the user space side of virtiofs. > > > > The kernel and qemu device parts recently went in, > > so the daemon is the only thing missing to have a working > > set. > > > > This set is the absolute minimal base set of patches; > > it's not yet safe to use (from security or correctness); > > > > I'll follow up with ~3 more series in the next few days > > with: > > > > a) Security patches that add sandboxing and checking > > compared with normal fuse - that makes it safe. > > b) Performance improvements including threading > > c) Other fixes, including correctness. > > > > but, this is a good start and gets things rolling. > > > > The set pulls in a big chunk of the upstream libfuse library > > (unmodified so that it's easy to check it really is upstream), > > chops all the stuff out we don't need and then adds the > > new transport we need. > > > > For new files I've formatted the code according to qemu > > standards; for files that are from upstream libfuse > > I've kept with their standards for ease of future updating. > > Thinking of future updates, have you given any thought to > automating them? Something along the lines of > update-linux-headers maybe?
The problem is we're changing the code in some of them; libfuse changes slowly enough that rebasing on a new libfuse isn't too bad; but once committed, just copying new versions in like update-linux-headers does isn't going to work because we have to merge in our changes. I expect to have to cherry-pick changes. Libfuse has had 75 patches in the last year; so it doesn't worry me too much. Dave > > > We can't just link with libfuse, since we have to make ABI incompatible > > changes for the new transport. > > > > Running this daemon is typically done with: > > > > ./virtiofsd -o vhost_user_socket=/path/socket -o source=/path/to/fs > > > > connected to a qemu that's then started with: > > -chardev socket,id=char0,path=/path/socket -device > > vhost-user-fs-pci,queue-size=1024,chardev=char0,tag=myfs > > > > and then in the guest mount with: > > mount -t virtiofs myfs /mnt > > > > Our development branch is: > > https://gitlab.com/virtio-fs/qemu/tree/virtio-fs-dev > > > > Dave > > > > > > Dr. David Alan Gilbert (22): > > virtiofsd: Pull in upstream headers > > virtiofsd: Pull in kernel's fuse.h > > virtiofsd: Add auxiliary .c's > > virtiofsd: Add fuse_lowlevel.c > > virtiofsd: Add passthrough_ll > > virtiofsd: Trim down imported files > > virtiofsd: Fix fuse_daemonize ignored return values > > virtiofsd: Fix common header and define for QEMU builds > > virtiofsd: fuse: Make iov_length usable outside fuse_lowlevel.c > > virtiofsd: Add options for virtio > > virtiofsd: Open vhost connection instead of mounting > > virtiofsd: Start wiring up vhost-user > > virtiofsd: Add main virtio loop > > virtiofsd: get/set features callbacks > > virtiofsd: Start queue threads > > virtiofsd: Poll kick_fd for queue > > virtiofsd: Start reading commands from queue > > virtiofsd: Send replies to messages > > virtiofsd: Keep track of replies > > virtiofsd: Add Makefile wiring for virtiofsd contrib > > virtiofsd: Fast path for virtio read > > virtiofs: Add maintainers entry > > > > Stefan Hajnoczi (7): > > virtiofsd: remove mountpoint dummy argument > > virtiofsd: remove unused notify reply support > > virtiofsd: add -o source=PATH to help output > > virtiofsd: add --fd=FDNUM fd passing option > > virtiofsd: make -f (foreground) the default > > virtiofsd: add vhost-user.json file > > virtiofsd: add --print-capabilities option > > > > Vivek Goyal (1): > > virtiofsd: Make fsync work even if only inode is passed in > > > > .gitignore | 1 + > > MAINTAINERS | 8 + > > Makefile | 9 + > > Makefile.objs | 1 + > > contrib/virtiofsd/50-qemu-virtiofsd.json.in | 5 + > > contrib/virtiofsd/Makefile.objs | 10 + > > contrib/virtiofsd/buffer.c | 318 +++ > > contrib/virtiofsd/fuse.h | 1268 ++++++++++ > > contrib/virtiofsd/fuse_common.h | 823 +++++++ > > contrib/virtiofsd/fuse_i.h | 131 ++ > > contrib/virtiofsd/fuse_kernel.h | 858 +++++++ > > contrib/virtiofsd/fuse_log.c | 40 + > > contrib/virtiofsd/fuse_log.h | 82 + > > contrib/virtiofsd/fuse_loop_mt.c | 54 + > > contrib/virtiofsd/fuse_lowlevel.c | 2302 +++++++++++++++++++ > > contrib/virtiofsd/fuse_lowlevel.h | 2024 ++++++++++++++++ > > contrib/virtiofsd/fuse_misc.h | 59 + > > contrib/virtiofsd/fuse_opt.c | 422 ++++ > > contrib/virtiofsd/fuse_opt.h | 271 +++ > > contrib/virtiofsd/fuse_signals.c | 90 + > > contrib/virtiofsd/fuse_virtio.c | 717 ++++++ > > contrib/virtiofsd/fuse_virtio.h | 33 + > > contrib/virtiofsd/helper.c | 300 +++ > > contrib/virtiofsd/passthrough_helpers.h | 76 + > > contrib/virtiofsd/passthrough_ll.c | 1341 +++++++++++ > > docs/interop/vhost-user.json | 4 +- > > 26 files changed, 11246 insertions(+), 1 deletion(-) > > create mode 100644 contrib/virtiofsd/50-qemu-virtiofsd.json.in > > create mode 100644 contrib/virtiofsd/Makefile.objs > > create mode 100644 contrib/virtiofsd/buffer.c > > create mode 100644 contrib/virtiofsd/fuse.h > > create mode 100644 contrib/virtiofsd/fuse_common.h > > create mode 100644 contrib/virtiofsd/fuse_i.h > > create mode 100644 contrib/virtiofsd/fuse_kernel.h > > create mode 100644 contrib/virtiofsd/fuse_log.c > > create mode 100644 contrib/virtiofsd/fuse_log.h > > create mode 100644 contrib/virtiofsd/fuse_loop_mt.c > > create mode 100644 contrib/virtiofsd/fuse_lowlevel.c > > create mode 100644 contrib/virtiofsd/fuse_lowlevel.h > > create mode 100644 contrib/virtiofsd/fuse_misc.h > > create mode 100644 contrib/virtiofsd/fuse_opt.c > > create mode 100644 contrib/virtiofsd/fuse_opt.h > > create mode 100644 contrib/virtiofsd/fuse_signals.c > > create mode 100644 contrib/virtiofsd/fuse_virtio.c > > create mode 100644 contrib/virtiofsd/fuse_virtio.h > > create mode 100644 contrib/virtiofsd/helper.c > > create mode 100644 contrib/virtiofsd/passthrough_helpers.h > > create mode 100644 contrib/virtiofsd/passthrough_ll.c > > > > -- > > 2.23.0 -- Dr. David Alan Gilbert / dgilb...@redhat.com / Manchester, UK
