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. 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