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mirror of https://github.com/rclone/rclone synced 2024-11-25 02:47:14 +01:00
rclone/cmd/nfsmount/nfsmount.go
Nick Craig-Wood a365503750 nfsmount: fix stale handle problem after converting options to new style
This problem was caused by the defaults not being set for the options
after the conversion to the new config system in

28ba4b832d serve nfs: convert options to new style

This makes the nfs serve options globally available so nfsmount can
use them directly.

Fixes #8029
2024-08-28 07:08:23 +01:00

117 lines
2.9 KiB
Go

//go:build unix
// Package nfsmount implements mounting functionality using serve nfs command
//
// This can potentially work on all unix like systems which can mount NFS.
package nfsmount
import (
"bytes"
"context"
"fmt"
"net"
"os/exec"
"runtime"
"github.com/rclone/rclone/cmd/mountlib"
"github.com/rclone/rclone/cmd/serve/nfs"
"github.com/rclone/rclone/fs"
"github.com/rclone/rclone/fs/config/flags"
"github.com/rclone/rclone/vfs"
)
var (
sudo = false
)
func init() {
name := "nfsmount"
cmd := mountlib.NewMountCommand(name, false, mount)
cmd.Annotations["versionIntroduced"] = "v1.65"
cmd.Annotations["status"] = "Experimental"
mountlib.AddRc(name, mount)
cmdFlags := cmd.Flags()
flags.BoolVarP(cmdFlags, &sudo, "sudo", "", sudo, "Use sudo to run the mount/umount commands as root.", "")
nfs.AddFlags(cmdFlags)
}
func mount(VFS *vfs.VFS, mountpoint string, opt *mountlib.Options) (asyncerrors <-chan error, unmount func() error, err error) {
s, err := nfs.NewServer(context.Background(), VFS, &nfs.Opt)
if err != nil {
return
}
errChan := make(chan error, 1)
go func() {
errChan <- s.Serve()
}()
// The port is always picked at random after the NFS server has started
// we need to query the server for the port number so we can mount it
_, port, err := net.SplitHostPort(s.Addr().String())
if err != nil {
err = fmt.Errorf("cannot find port number in %s", s.Addr().String())
return
}
// Options
options := []string{
"-o", fmt.Sprintf("port=%s", port),
"-o", fmt.Sprintf("mountport=%s", port),
"-o", "tcp",
}
for _, option := range opt.ExtraOptions {
options = append(options, "-o", option)
}
options = append(options, opt.ExtraFlags...)
cmd := []string{}
if sudo {
cmd = append(cmd, "sudo")
}
cmd = append(cmd, "mount")
cmd = append(cmd, options...)
cmd = append(cmd, "localhost:"+opt.VolumeName, mountpoint)
fs.Debugf(nil, "Running mount command: %q", cmd)
out, err := exec.Command(cmd[0], cmd[1:]...).CombinedOutput()
if err != nil {
out = bytes.TrimSpace(out)
err = fmt.Errorf("%s: failed to mount NFS volume: %v", out, err)
return
}
asyncerrors = errChan
unmount = func() error {
if s.UnmountedExternally {
return nil
}
var umountErr error
var out []byte
if runtime.GOOS == "darwin" {
out, umountErr = exec.Command("diskutil", "umount", "force", mountpoint).CombinedOutput()
} else {
cmd := []string{}
if sudo {
cmd = append(cmd, "sudo")
}
cmd = append(cmd, "umount", "-f", mountpoint)
out, umountErr = exec.Command(cmd[0], cmd[1:]...).CombinedOutput()
}
shutdownErr := s.Shutdown()
VFS.Shutdown()
if umountErr != nil {
out = bytes.TrimSpace(out)
return fmt.Errorf("%s: failed to umount the NFS volume %e", out, umountErr)
} else if shutdownErr != nil {
return fmt.Errorf("failed to shutdown NFS server: %e", shutdownErr)
}
return nil
}
nfs.OnUnmountFunc = func() {
s.UnmountedExternally = true
errChan <- nil
VFS.Shutdown()
}
return
}