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// +build linux darwin freebsd
package command
import (
"context"
"fmt"
"os"
"os/user"
"path"
"runtime"
"strconv"
"strings"
"time"
"github.com/chrislusf/seaweedfs/weed/filesys/meta_cache"
"github.com/seaweedfs/fuse"
"github.com/seaweedfs/fuse/fs"
"github.com/chrislusf/seaweedfs/weed/filesys"
"github.com/chrislusf/seaweedfs/weed/util/log"
"github.com/chrislusf/seaweedfs/weed/pb"
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
"github.com/chrislusf/seaweedfs/weed/security"
"github.com/chrislusf/seaweedfs/weed/util"
"github.com/chrislusf/seaweedfs/weed/util/grace"
)
func runMount(cmd *Command, args []string) bool {
grace.SetupProfiling(*mountCpuProfile, *mountMemProfile)
if *mountReadRetryTime < time.Second {
*mountReadRetryTime = time.Second
}
util.RetryWaitTime = *mountReadRetryTime
umask, umaskErr := strconv.ParseUint(*mountOptions.umaskString, 8, 64)
if umaskErr != nil {
fmt.Printf("can not parse umask %s", *mountOptions.umaskString)
return false
}
if len(args) > 0 {
return false
}
return RunMount(&mountOptions, os.FileMode(umask))
}
func RunMount(option *MountOptions, umask os.FileMode) bool {
filer := *option.filer
// parse filer grpc address
filerGrpcAddress, err := pb.ParseFilerGrpcAddress(filer)
if err != nil {
log.Infof("ParseFilerGrpcAddress: %v", err)
return true
}
// try to connect to filer, filerBucketsPath may be useful later
grpcDialOption := security.LoadClientTLS(util.GetViper(), "grpc.client")
var cipher bool
err = pb.WithGrpcFilerClient(filerGrpcAddress, grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
resp, err := client.GetFilerConfiguration(context.Background(), &filer_pb.GetFilerConfigurationRequest{})
if err != nil {
return fmt.Errorf("get filer grpc address %s configuration: %v", filerGrpcAddress, err)
}
cipher = resp.Cipher
return nil
})
if err != nil {
log.Infof("failed to talk to filer %s: %v", filerGrpcAddress, err)
return true
}
filerMountRootPath := *option.filerMountRootPath
dir := util.ResolvePath(*option.dir)
chunkSizeLimitMB := *mountOptions.chunkSizeLimitMB
util.LoadConfiguration("security", false)
fmt.Printf("This is SeaweedFS version %s %s %s\n", util.Version(), runtime.GOOS, runtime.GOARCH)
if dir == "" {
fmt.Printf("Please specify the mount directory via \"-dir\"")
return false
}
if chunkSizeLimitMB <= 0 {
fmt.Printf("Please specify a reasonable buffer size.")
return false
}
fuse.Unmount(dir)
// detect mount folder mode
if *option.dirAutoCreate {
os.MkdirAll(dir, os.FileMode(0777)&^umask)
}
fileInfo, err := os.Stat(dir)
uid, gid := uint32(0), uint32(0)
mountMode := os.ModeDir | 0777
if err == nil {
mountMode = os.ModeDir | fileInfo.Mode()
uid, gid = util.GetFileUidGid(fileInfo)
fmt.Printf("mount point owner uid=%d gid=%d mode=%s\n", uid, gid, fileInfo.Mode())
} else {
fmt.Printf("can not stat %s\n", dir)
return false
}
if uid == 0 {
if u, err := user.Current(); err == nil {
if parsedId, pe := strconv.ParseUint(u.Uid, 10, 32); pe == nil {
uid = uint32(parsedId)
}
if parsedId, pe := strconv.ParseUint(u.Gid, 10, 32); pe == nil {
gid = uint32(parsedId)
}
fmt.Printf("current uid=%d gid=%d\n", uid, gid)
}
}
// mapping uid, gid
uidGidMapper, err := meta_cache.NewUidGidMapper(*option.uidMap, *option.gidMap)
if err != nil {
fmt.Printf("failed to parse %s %s: %v\n", *option.uidMap, *option.gidMap, err)
return false
}
// Ensure target mount point availability
if isValid := checkMountPointAvailable(dir); !isValid {
log.Fatalf("Expected mount to still be active, target mount point: %s, please check!", dir)
return true
}
mountName := path.Base(dir)
options := []fuse.MountOption{
fuse.VolumeName(mountName),
fuse.FSName(filer + ":" + filerMountRootPath),
fuse.Subtype("seaweedfs"),
// fuse.NoAppleDouble(), // include .DS_Store, otherwise can not delete non-empty folders
fuse.NoAppleXattr(),
fuse.NoBrowse(),
fuse.AutoXattr(),
fuse.ExclCreate(),
fuse.DaemonTimeout("3600"),
fuse.AllowSUID(),
fuse.DefaultPermissions(),
fuse.MaxReadahead(1024 * 128),
fuse.AsyncRead(),
fuse.WritebackCache(),
}
options = append(options, osSpecificMountOptions()...)
if *option.allowOthers {
options = append(options, fuse.AllowOther())
}
if *option.nonempty {
options = append(options, fuse.AllowNonEmptyMount())
}
// find mount point
mountRoot := filerMountRootPath
if mountRoot != "/" && strings.HasSuffix(mountRoot, "/") {
mountRoot = mountRoot[0 : len(mountRoot)-1]
}
seaweedFileSystem := filesys.NewSeaweedFileSystem(&filesys.Option{
FilerGrpcAddress: filerGrpcAddress,
GrpcDialOption: grpcDialOption,
FilerMountRootPath: mountRoot,
Collection: *option.collection,
Replication: *option.replication,
TtlSec: int32(*option.ttlSec),
ChunkSizeLimit: int64(chunkSizeLimitMB) * 1024 * 1024,
ConcurrentWriters: *option.concurrentWriters,
CacheDir: *option.cacheDir,
CacheSizeMB: *option.cacheSizeMB,
DataCenter: *option.dataCenter,
EntryCacheTtl: 3 * time.Second,
MountUid: uid,
MountGid: gid,
MountMode: mountMode,
MountCtime: fileInfo.ModTime(),
MountMtime: time.Now(),
Umask: umask,
OutsideContainerClusterMode: *mountOptions.outsideContainerClusterMode,
Cipher: cipher,
UidGidMapper: uidGidMapper,
})
// mount
c, err := fuse.Mount(dir, options...)
if err != nil {
log.Infof("mount: %v", err)
return true
}
defer fuse.Unmount(dir)
grace.OnInterrupt(func() {
fuse.Unmount(dir)
c.Close()
})
log.Infof("mounted %s%s to %s", filer, mountRoot, dir)
err = fs.Serve(c, seaweedFileSystem)
// check if the mount process has an error to report
<-c.Ready
if err := c.MountError; err != nil {
log.Infof("mount process: %v", err)
return true
}
return true
}
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