Initial commit

Proof-of-concept implementation. Bugs will occur.

vendor/github.com/hanwen/go-fuse/v2/fuse/mount_darwin.go

@@ -0,0 +1,114 @@
+// Copyright 2016 the Go-FUSE Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package fuse
+
+import (
+	"bytes"
+	"fmt"
+	"os"
+	"os/exec"
+	"strings"
+	"syscall"
+)
+
+func getMaxWrite() int {
+	return 1 << 20
+}
+
+func unixgramSocketpair() (l, r *os.File, err error) {
+	fd, err := syscall.Socketpair(syscall.AF_UNIX, syscall.SOCK_STREAM, 0)
+	if err != nil {
+		return nil, nil, os.NewSyscallError("socketpair",
+			err.(syscall.Errno))
+	}
+	l = os.NewFile(uintptr(fd[0]), "socketpair-half1")
+	r = os.NewFile(uintptr(fd[1]), "socketpair-half2")
+	return
+}
+
+// Create a FUSE FS on the specified mount point.  The returned
+// mount point is always absolute.
+func mount(mountPoint string, opts *MountOptions, ready chan<- error) (fd int, err error) {
+	local, remote, err := unixgramSocketpair()
+	if err != nil {
+		return
+	}
+
+	defer local.Close()
+	defer remote.Close()
+
+	bin, err := fusermountBinary()
+	if err != nil {
+		return 0, err
+	}
+
+	cmd := exec.Command(bin,
+		"-o", strings.Join(opts.optionsStrings(), ","),
+		"-o", fmt.Sprintf("iosize=%d", opts.MaxWrite),
+		mountPoint)
+	cmd.ExtraFiles = []*os.File{remote} // fd would be (index + 3)
+	cmd.Env = append(os.Environ(),
+		"_FUSE_CALL_BY_LIB=",
+		"_FUSE_DAEMON_PATH="+os.Args[0],
+		"_FUSE_COMMFD=3",
+		"_FUSE_COMMVERS=2",
+		"MOUNT_OSXFUSE_CALL_BY_LIB=",
+		"MOUNT_OSXFUSE_DAEMON_PATH="+os.Args[0])
+
+	var out, errOut bytes.Buffer
+	cmd.Stdout = &out
+	cmd.Stderr = &errOut
+
+	if err = cmd.Start(); err != nil {
+		return
+	}
+
+	fd, err = getConnection(local)
+	if err != nil {
+		return -1, err
+	}
+
+	go func() {
+		// On macos, mount_osxfuse is not just a suid
+		// wrapper. It interacts with the FS setup, and will
+		// not exit until the filesystem has successfully
+		// responded to INIT and STATFS. This means we can
+		// only wait on the mount_osxfuse process after the
+		// server has fully started
+		if err := cmd.Wait(); err != nil {
+			err = fmt.Errorf("mount_osxfusefs failed: %v. Stderr: %s, Stdout: %s",
+				err, errOut.String(), out.String())
+		}
+
+		ready <- err
+		close(ready)
+	}()
+
+	// golang sets CLOEXEC on file descriptors when they are
+	// acquired through normal operations (e.g. open).
+	// Buf for fd, we have to set CLOEXEC manually
+	syscall.CloseOnExec(fd)
+
+	return fd, err
+}
+
+func unmount(dir string, opts *MountOptions) error {
+	return syscall.Unmount(dir, 0)
+}
+
+func fusermountBinary() (string, error) {
+	binPaths := []string{
+		"/Library/Filesystems/macfuse.fs/Contents/Resources/mount_macfuse",
+		"/Library/Filesystems/osxfuse.fs/Contents/Resources/mount_osxfuse",
+	}
+
+	for _, path := range binPaths {
+		if _, err := os.Stat(path); err == nil {
+			return path, nil
+		}
+	}
+
+	return "", fmt.Errorf("no FUSE mount utility found")
+}