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[83.57.172.113]) by smtp.gmail.com with ESMTPSA id q6sm55955987wrx.72.2020.01.21.07.41.40 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 21 Jan 2020 07:41:41 -0800 (PST) Subject: Re: [PATCH v2 000/109] virtiofs daemon [all] To: "Dr. David Alan Gilbert (git)" , qemu-devel@nongnu.org, stefanha@redhat.com, vgoyal@redhat.com, berrange@redhat.com, slp@redhat.com References: <20200121122433.50803-1-dgilbert@redhat.com> From: =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= Message-ID: Date: Tue, 21 Jan 2020 16:41:40 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.2 MIME-Version: 1.0 In-Reply-To: <20200121122433.50803-1-dgilbert@redhat.com> Content-Language: en-US X-MC-Unique: BApM-WMhP3uS2Pf0u07Pwg-1 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 205.139.110.120 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: m.mizuma@jp.fujitsu.com, misono.tomohiro@jp.fujitsu.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 1/21/20 1:22 PM, Dr. David Alan Gilbert (git) wrote: > From: "Dr. David Alan Gilbert" > > Hi, > This is a full set for virtiofsd - a daemon > that implements the user space side of virtiofs. > > I've addressed most review comments from V1; we've got > 95 Reviewed-by's out of 110 - I'd like to get a PULL out ASAP. > > 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. I've formatted everything into qemu's code style - > using indent and the clang tools for the files I've imported. > > We can't just link with libfuse, since we have to make ABI incompatible > changes for the new transport and it's quite invasive; the library is > designed to be the basis for multiple filesystems, but all on the same > transport. > > Running this daemon is typically done with: > > ./virtiofsd --socket-path=/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 FWIW this branch contains more than this series, because it failed to build on 32-bit: $ make virtiofsd CC tools/virtiofsd/fuse_lowlevel.o tools/virtiofsd/fuse_lowlevel.c: In function 'do_removemapping': tools/virtiofsd/fuse_lowlevel.c:1956:60: error: format '%ld' expects argument of type 'long int', but argument 4 has type 'unsigned int' [-Werror=format=] "do_removemapping: invalid in, expected %d * %ld, has %ld - %ld\n", ^ tools/virtiofsd/fuse_lowlevel.c:1956:69: error: format '%ld' expects argument of type 'long int', but argument 5 has type 'size_t {aka unsigned int}' [-Werror=format=] "do_removemapping: invalid in, expected %d * %ld, has %ld - %ld\n", ^ tools/virtiofsd/fuse_lowlevel.c:1956:75: error: format '%ld' expects argument of type 'long int', but argument 6 has type 'size_t {aka unsigned int}' [-Werror=format=] "do_removemapping: invalid in, expected %d * %ld, has %ld - %ld\n", ^ And the offending patch is not included in the 109: $ git show 62d82cfbe5a commit 62d82cfbe5a2ad05ae3215f2461b76aa9915108d Author: Dr. David Alan Gilbert Date: Fri Jul 6 18:03:49 2018 +0100 DAX: virtiofsd: Add setup/remove mappings fuse commands Consider pushing tags with version, so it is easier to diff (virtio-fs-dev got force-pushed). We don't need libslirp/capstone/dtc but they are still built: $ make virtiofsd GEN config-host.h make[1]: Entering directory 'slirp' CC slirp/src/state.o CC slirp/src/tcp_timer.o CC slirp/src/dhcpv6.o CC slirp/src/ip_input.o CC slirp/src/ip6_icmp.o CC slirp/src/bootp.o CC slirp/src/ip6_input.o CC slirp/src/slirp.o CC slirp/src/vmstate.o CC slirp/src/ip_output.o CC slirp/src/ncsi.o CC slirp/src/tcp_output.o CC slirp/src/ndp_table.o CC slirp/src/version.o CC slirp/src/misc.o CC slirp/src/ip6_output.o CC slirp/src/mbuf.o CC slirp/src/tftp.o CC slirp/src/arp_table.o CC slirp/src/util.o CC slirp/src/socket.o CC slirp/src/sbuf.o CC slirp/src/stream.o CC slirp/src/dnssearch.o CC slirp/src/udp.o CC slirp/src/tcp_input.o CC slirp/src/if.o CC slirp/src/cksum.o CC slirp/src/tcp_subr.o CC slirp/src/udp6.o CC slirp/src/ip_icmp.o AR slirp/libslirp.a make[1]: Leaving directory 'slirp' DEP dtc/libfdt/fdt_overlay.c DEP dtc/libfdt/fdt_addresses.c DEP dtc/libfdt/fdt_empty_tree.c DEP dtc/libfdt/fdt_strerror.c DEP dtc/libfdt/fdt_rw.c DEP dtc/libfdt/fdt_sw.c DEP dtc/libfdt/fdt_wip.c DEP dtc/libfdt/fdt_ro.c DEP dtc/libfdt/fdt.c DEP dtc/util.c DEP dtc/fdtoverlay.c DEP dtc/fdtput.c DEP dtc/fdtget.c DEP dtc/fdtdump.c DEP convert-dtsv0-lexer.lex.c DEP dtc/srcpos.c BISON dtc-parser.tab.c DEP dtc-parser.tab.c LEX dtc-lexer.lex.c DEP dtc-lexer.lex.c DEP dtc/treesource.c DEP dtc/livetree.c DEP dtc/fstree.c DEP dtc/flattree.c DEP dtc/dtc.c DEP dtc/data.c DEP dtc/checks.c CC libfdt/fdt.o CC libfdt/fdt_ro.o CC libfdt/fdt_wip.o CC libfdt/fdt_sw.o CC libfdt/fdt_rw.o CC libfdt/fdt_strerror.o CC libfdt/fdt_empty_tree.o CC libfdt/fdt_addresses.o CC libfdt/fdt_overlay.o AR libfdt/libfdt.a arm-linux-gnueabihf-ar: creating libfdt/libfdt.a a - libfdt/fdt.o a - libfdt/fdt_ro.o a - libfdt/fdt_wip.o a - libfdt/fdt_sw.o a - libfdt/fdt_rw.o a - libfdt/fdt_strerror.o a - libfdt/fdt_empty_tree.o a - libfdt/fdt_addresses.o a - libfdt/fdt_overlay.o CC cs.o CC utils.o CC SStream.o CC MCInstrDesc.o CC MCRegisterInfo.o CC arch/ARM/ARMDisassembler.o CC arch/ARM/ARMInstPrinter.o CC arch/ARM/ARMMapping.o CC arch/ARM/ARMModule.o CC arch/AArch64/AArch64BaseInfo.o CC arch/AArch64/AArch64Disassembler.o CC arch/AArch64/AArch64InstPrinter.o CC arch/AArch64/AArch64Mapping.o CC arch/AArch64/AArch64Module.o CC arch/Mips/MipsDisassembler.o CC arch/Mips/MipsInstPrinter.o CC arch/Mips/MipsMapping.o CC arch/Mips/MipsModule.o CC arch/PowerPC/PPCDisassembler.o CC arch/PowerPC/PPCInstPrinter.o CC arch/PowerPC/PPCMapping.o CC arch/PowerPC/PPCModule.o CC arch/Sparc/SparcDisassembler.o CC arch/Sparc/SparcInstPrinter.o CC arch/Sparc/SparcMapping.o CC arch/Sparc/SparcModule.o CC arch/SystemZ/SystemZDisassembler.o CC arch/SystemZ/SystemZInstPrinter.o CC arch/SystemZ/SystemZMapping.o CC arch/SystemZ/SystemZModule.o CC arch/SystemZ/SystemZMCTargetDesc.o CC arch/X86/X86DisassemblerDecoder.o CC arch/X86/X86Disassembler.o CC arch/X86/X86IntelInstPrinter.o CC arch/X86/X86ATTInstPrinter.o CC arch/X86/X86Mapping.o CC arch/X86/X86Module.o CC arch/XCore/XCoreDisassembler.o CC arch/XCore/XCoreInstPrinter.o CC arch/XCore/XCoreMapping.o CC arch/XCore/XCoreModule.o CC MCInst.o AR libcapstone.a CC tools/virtiofsd/buffer.o CC tools/virtiofsd/fuse_opt.o CC tools/virtiofsd/fuse_log.o CC tools/virtiofsd/fuse_lowlevel.o ... FYI Paolo queued this patch, so libfdt shouldn't get compiled anymore: https://www.mail-archive.com/qemu-devel@nongnu.org/msg671667.html > This code is going into tools/virtiofsd based on the previous long > discussion. > > Thank you to all those who have contributed code and to those who have > reviewed the previous version. > > Dave > > Dr. David Alan Gilbert (35): > 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: Format imported files to qemu style > virtiofsd: Fix fuse_daemonize ignored return values > virtiofsd: Fix common header and define for QEMU builds > virtiofsd: Trim out compatibility code > 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 > virtiofsd: Plumb fuse_bufvec through to do_write_buf > virtiofsd: Pass write iov's all the way through > virtiofsd: cap-ng helpers > docs: Add docs/tools > virtiofsd: Handle reinit > virtiofsd: Handle hard reboot > virtiofsd: Kill threads when queues are stopped > vhost-user: Print unexpected slave message types > contrib/libvhost-user: Protect slave fd with mutex > virtiofsd: Clean up inodes on destroy > libvhost-user: Fix some memtable remap cases > virtiofsd: Convert lo_destroy to take the lo->mutex lock itself > > Eric Ren (1): > virtiofsd: fix incorrect error handling in lo_do_lookup > > Eryu Guan (3): > virtiofsd: print log only when priority is high enough > virtiofsd: convert more fprintf and perror to use fuse log infra > virtiofsd: stop all queue threads on exit in virtio_loop() > > Jiufei Xue (1): > virtiofsd: support nanosecond resolution for file timestamp > > Liu Bo (6): > virtiofsd: fix error handling in main() > virtiofsd: cleanup allocated resource in se > virtiofsd: fix memory leak on lo.source > virtiofsd: add helper for lo_data cleanup > virtiofsd: enable PARALLEL_DIROPS during INIT > Virtiofsd: fix memory leak on fuse queueinfo > > Masayoshi Mizuma (4): > virtiofsd: Add ID to the log with FUSE_LOG_DEBUG level > virtiofsd: Add timestamp to the log with FUSE_LOG_DEBUG level > virtiofsd: Prevent multiply running with same vhost_user_socket > virtiofsd: add some options to the help message > > Miklos Szeredi (10): > virtiofsd: passthrough_ll: add fallback for racy ops > virtiofsd: passthrough_ll: add renameat2 support > virtiofsd: passthrough_ll: disable readdirplus on cache=never > virtiofsd: passthrough_ll: control readdirplus > virtiofsd: rename unref_inode() to unref_inode_lolocked() > virtiofsd: fail when parent inode isn't known in lo_do_lookup() > virtiofsd: extract root inode init into setup_root() > virtiofsd: passthrough_ll: clean up cache related options > virtiofsd: passthrough_ll: use hashtable > virtiofsd: passthrough_ll: fix refcounting on remove/rename > > Misono Tomohiro (1): > virtiofsd: Fix data corruption with O_APPEND write in writeback mode > > Peng Tao (1): > virtiofsd: do not always set FUSE_FLOCK_LOCKS > > Stefan Hajnoczi (37): > 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 > virtiofsd: passthrough_ll: add lo_map for ino/fh indirection > virtiofsd: passthrough_ll: add ino_map to hide lo_inode pointers > virtiofsd: passthrough_ll: add dirp_map to hide lo_dirp pointers > virtiofsd: passthrough_ll: add fd_map to hide file descriptors > virtiofsd: validate path components > virtiofsd: add fuse_mbuf_iter API > virtiofsd: validate input buffer sizes in do_write_buf() > virtiofsd: check input buffer size in fuse_lowlevel.c ops > virtiofsd: prevent ".." escape in lo_do_lookup() > virtiofsd: prevent ".." escape in lo_do_readdir() > virtiofsd: use /proc/self/fd/ O_PATH file descriptor > virtiofsd: sandbox mount namespace > virtiofsd: move to an empty network namespace > virtiofsd: move to a new pid namespace > virtiofsd: add seccomp whitelist > virtiofsd: set maximum RLIMIT_NOFILE limit > virtiofsd: fix libfuse information leaks > virtiofsd: add security guide document > virtiofsd: add --syslog command-line option > virtiofsd: use fuse_lowlevel_is_virtio() in fuse_session_destroy() > virtiofsd: prevent fv_queue_thread() vs virtio_loop() races > virtiofsd: make lo_release() atomic > virtiofsd: prevent races with lo_dirp_put() > virtiofsd: rename inode->refcount to inode->nlookup > virtiofsd: add man page > virtiofsd: introduce inode refcount to prevent use-after-free > virtiofsd: process requests in a thread pool > virtiofsd: prevent FUSE_INIT/FUSE_DESTROY races > virtiofsd: fix lo_destroy() resource leaks > virtiofsd: add --thread-pool-size=NUM option > > Vivek Goyal (6): > virtiofsd: Make fsync work even if only inode is passed in > virtiofsd: passthrough_ll: create new files in caller's context > virtiofsd: Parse flag FUSE_WRITE_KILL_PRIV > virtiofsd: Drop CAP_FSETID if client asked for it > virtiofsd: Support remote posix locks > virtiofsd: Reset O_DIRECT flag during file open > > Xiao Yang (2): > vitriofsd/passthrough_ll: fix fallocate() ifdefs > virtiofsd/passthrough_ll: Pass errno to fuse_reply_err() > > piaojun (2): > virtiofsd: add definition of fuse_buf_writev() > virtiofsd: use fuse_buf_writev to replace fuse_buf_write for better > performance > > .gitignore | 1 + > MAINTAINERS | 8 + > Makefile | 27 +- > Makefile.objs | 1 + > configure | 16 + > contrib/libvhost-user/libvhost-user.c | 57 +- > contrib/libvhost-user/libvhost-user.h | 6 + > docs/index.rst | 1 + > docs/interop/vhost-user.json | 4 +- > docs/tools/conf.py | 16 + > docs/tools/index.rst | 14 + > docs/tools/virtiofsd-security.rst | 118 + > hw/virtio/vhost-user.c | 2 +- > include/standard-headers/linux/fuse.h | 891 ++++++ > scripts/update-linux-headers.sh | 1 + > tools/virtiofsd/50-qemu-virtiofsd.json.in | 5 + > tools/virtiofsd/Makefile.objs | 12 + > tools/virtiofsd/buffer.c | 351 +++ > tools/virtiofsd/fuse.h | 1249 +++++++++ > tools/virtiofsd/fuse_common.h | 860 ++++++ > tools/virtiofsd/fuse_i.h | 115 + > tools/virtiofsd/fuse_log.c | 40 + > tools/virtiofsd/fuse_log.h | 74 + > tools/virtiofsd/fuse_lowlevel.c | 2779 +++++++++++++++++++ > tools/virtiofsd/fuse_lowlevel.h | 2023 ++++++++++++++ > tools/virtiofsd/fuse_misc.h | 60 + > tools/virtiofsd/fuse_opt.c | 449 +++ > tools/virtiofsd/fuse_opt.h | 272 ++ > tools/virtiofsd/fuse_signals.c | 97 + > tools/virtiofsd/fuse_virtio.c | 985 +++++++ > tools/virtiofsd/fuse_virtio.h | 33 + > tools/virtiofsd/helper.c | 349 +++ > tools/virtiofsd/passthrough_helpers.h | 51 + > tools/virtiofsd/passthrough_ll.c | 3006 +++++++++++++++++++++ > tools/virtiofsd/seccomp.c | 164 ++ > tools/virtiofsd/seccomp.h | 16 + > tools/virtiofsd/virtiofsd.texi | 104 + > 37 files changed, 14242 insertions(+), 15 deletions(-) > create mode 100644 docs/tools/conf.py > create mode 100644 docs/tools/index.rst > create mode 100644 docs/tools/virtiofsd-security.rst > create mode 100644 include/standard-headers/linux/fuse.h > create mode 100644 tools/virtiofsd/50-qemu-virtiofsd.json.in > create mode 100644 tools/virtiofsd/Makefile.objs > create mode 100644 tools/virtiofsd/buffer.c > create mode 100644 tools/virtiofsd/fuse.h > create mode 100644 tools/virtiofsd/fuse_common.h > create mode 100644 tools/virtiofsd/fuse_i.h > create mode 100644 tools/virtiofsd/fuse_log.c > create mode 100644 tools/virtiofsd/fuse_log.h > create mode 100644 tools/virtiofsd/fuse_lowlevel.c > create mode 100644 tools/virtiofsd/fuse_lowlevel.h > create mode 100644 tools/virtiofsd/fuse_misc.h > create mode 100644 tools/virtiofsd/fuse_opt.c > create mode 100644 tools/virtiofsd/fuse_opt.h > create mode 100644 tools/virtiofsd/fuse_signals.c > create mode 100644 tools/virtiofsd/fuse_virtio.c > create mode 100644 tools/virtiofsd/fuse_virtio.h > create mode 100644 tools/virtiofsd/helper.c > create mode 100644 tools/virtiofsd/passthrough_helpers.h > create mode 100644 tools/virtiofsd/passthrough_ll.c > create mode 100644 tools/virtiofsd/seccomp.c > create mode 100644 tools/virtiofsd/seccomp.h > create mode 100644 tools/virtiofsd/virtiofsd.texi >