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mount: add readOnly option

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fix https://github.com/chrislusf/seaweedfs/issues/1961
This commit is contained in:
Chris Lu 2021-04-04 21:40:58 -07:00
parent 6eee200c13
commit 0f64f5b9c8
8 changed files with 61 additions and 0 deletions
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2
weed/command/mount.go
View file

@ -25,6 +25,7 @@ type MountOptions struct {
volumeServerAccess *string
uidMap *string
gidMap *string
readOnly *bool
}
var (
@ -55,6 +56,7 @@ func init() {
mountOptions.volumeServerAccess = cmdMount.Flag.String("volumeServerAccess", "direct", "access volume servers by [direct|publicUrl|filerProxy]")
mountOptions.uidMap = cmdMount.Flag.String("map.uid", "", "map local uid to uid on filer, comma-separated <local_uid>:<filer_uid>")
mountOptions.gidMap = cmdMount.Flag.String("map.gid", "", "map local gid to gid on filer, comma-separated <local_gid>:<filer_gid>")
mountOptions.readOnly = cmdMount.Flag.Bool("readOnly", false, "read only")
mountCpuProfile = cmdMount.Flag.String("cpuprofile", "", "cpu profile output file")
mountMemProfile = cmdMount.Flag.String("memprofile", "", "memory profile output file")

1
weed/command/mount_std.go
View file

@ -203,6 +203,7 @@ func RunMount(option *MountOptions, umask os.FileMode) bool {
VolumeServerAccess: *mountOptions.volumeServerAccess,
Cipher: cipher,
UidGidMapper: uidGidMapper,
ReadOnly: *option.readOnly,
})
// mount

29
weed/filesys/dir.go
View file

@ -128,6 +128,10 @@ func (dir *Dir) newDirectory(fullpath util.FullPath, entry *filer_pb.Entry) fs.N
func (dir *Dir) Create(ctx context.Context, req *fuse.CreateRequest,
resp *fuse.CreateResponse) (fs.Node, fs.Handle, error) {
if dir.wfs.option.ReadOnly {
return nil, nil, fuse.EPERM
}
request, err := dir.doCreateEntry(req.Name, req.Mode, req.Uid, req.Gid, req.Flags&fuse.OpenExclusive != 0)
if err != nil {
@ -148,6 +152,10 @@ func (dir *Dir) Create(ctx context.Context, req *fuse.CreateRequest,
func (dir *Dir) Mknod(ctx context.Context, req *fuse.MknodRequest) (fs.Node, error) {
if dir.wfs.option.ReadOnly {
return nil, fuse.EPERM
}
request, err := dir.doCreateEntry(req.Name, req.Mode, req.Uid, req.Gid, false)
if err != nil {
@ -202,6 +210,10 @@ func (dir *Dir) doCreateEntry(name string, mode os.FileMode, uid, gid uint32, ex
func (dir *Dir) Mkdir(ctx context.Context, req *fuse.MkdirRequest) (fs.Node, error) {
if dir.wfs.option.ReadOnly {
return nil, fuse.EPERM
}
glog.V(4).Infof("mkdir %s: %s", dir.FullPath(), req.Name)
newEntry := &filer_pb.Entry{
@ -356,6 +368,11 @@ func findFileType(mode uint16) fuse.DirentType {
func (dir *Dir) Remove(ctx context.Context, req *fuse.RemoveRequest) error {
if dir.wfs.option.ReadOnly {
return fuse.EPERM
}
if !req.Dir {
return dir.removeOneFile(req)
}
@ -429,6 +446,10 @@ func (dir *Dir) removeFolder(req *fuse.RemoveRequest) error {
func (dir *Dir) Setattr(ctx context.Context, req *fuse.SetattrRequest, resp *fuse.SetattrResponse) error {
if dir.wfs.option.ReadOnly {
return fuse.EPERM
}
glog.V(4).Infof("%v dir setattr %+v", dir.FullPath(), req)
if err := dir.maybeLoadEntry(); err != nil {
@ -457,6 +478,10 @@ func (dir *Dir) Setattr(ctx context.Context, req *fuse.SetattrRequest, resp *fus
func (dir *Dir) Setxattr(ctx context.Context, req *fuse.SetxattrRequest) error {
if dir.wfs.option.ReadOnly {
return fuse.EPERM
}
glog.V(4).Infof("dir Setxattr %s: %s", dir.FullPath(), req.Name)
if err := dir.maybeLoadEntry(); err != nil {
@ -473,6 +498,10 @@ func (dir *Dir) Setxattr(ctx context.Context, req *fuse.SetxattrRequest) error {
func (dir *Dir) Removexattr(ctx context.Context, req *fuse.RemovexattrRequest) error {
if dir.wfs.option.ReadOnly {
return fuse.EPERM
}
glog.V(4).Infof("dir Removexattr %s: %s", dir.FullPath(), req.Name)
if err := dir.maybeLoadEntry(); err != nil {

8
weed/filesys/dir_link.go
View file

@ -24,6 +24,10 @@ const (
func (dir *Dir) Link(ctx context.Context, req *fuse.LinkRequest, old fs.Node) (fs.Node, error) {
if dir.wfs.option.ReadOnly {
return nil, fuse.EPERM
}
oldFile, ok := old.(*File)
if !ok {
glog.Errorf("old node is not a file: %+v", old)
@ -105,6 +109,10 @@ func (dir *Dir) Link(ctx context.Context, req *fuse.LinkRequest, old fs.Node) (f
func (dir *Dir) Symlink(ctx context.Context, req *fuse.SymlinkRequest) (fs.Node, error) {
if dir.wfs.option.ReadOnly {
return nil, fuse.EPERM
}
glog.V(4).Infof("Symlink: %v/%v to %v", dir.FullPath(), req.NewName, req.Target)
request := &filer_pb.CreateEntryRequest{

4
weed/filesys/dir_rename.go
View file

@ -13,6 +13,10 @@ import (
func (dir *Dir) Rename(ctx context.Context, req *fuse.RenameRequest, newDirectory fs.Node) error {
if dir.wfs.option.ReadOnly {
return fuse.EPERM
}
newDir := newDirectory.(*Dir)
newPath := util.NewFullPath(newDir.FullPath(), req.NewName)

12
weed/filesys/file.go
View file

@ -110,6 +110,10 @@ func (file *File) Open(ctx context.Context, req *fuse.OpenRequest, resp *fuse.Op
func (file *File) Setattr(ctx context.Context, req *fuse.SetattrRequest, resp *fuse.SetattrResponse) error {
if file.wfs.option.ReadOnly {
return fuse.EPERM
}
glog.V(4).Infof("%v file setattr %+v", file.fullpath(), req)
entry, err := file.maybeLoadEntry(ctx)
@ -200,6 +204,10 @@ func (file *File) Setattr(ctx context.Context, req *fuse.SetattrRequest, resp *f
func (file *File) Setxattr(ctx context.Context, req *fuse.SetxattrRequest) error {
if file.wfs.option.ReadOnly {
return fuse.EPERM
}
glog.V(4).Infof("file Setxattr %s: %s", file.fullpath(), req.Name)
entry, err := file.maybeLoadEntry(ctx)
@ -217,6 +225,10 @@ func (file *File) Setxattr(ctx context.Context, req *fuse.SetxattrRequest) error
func (file *File) Removexattr(ctx context.Context, req *fuse.RemovexattrRequest) error {
if file.wfs.option.ReadOnly {
return fuse.EPERM
}
glog.V(4).Infof("file Removexattr %s: %s", file.fullpath(), req.Name)
entry, err := file.maybeLoadEntry(ctx)

4
weed/filesys/filehandle.go
View file

@ -154,6 +154,10 @@ func (fh *FileHandle) readFromChunks(buff []byte, offset int64) (int64, error) {
// Write to the file handle
func (fh *FileHandle) Write(ctx context.Context, req *fuse.WriteRequest, resp *fuse.WriteResponse) error {
if fh.f.wfs.option.ReadOnly {
return fuse.EPERM
}
fh.Lock()
defer fh.Unlock()

1
weed/filesys/wfs.go
View file

@ -43,6 +43,7 @@ type Option struct {
DataCenter string
EntryCacheTtl time.Duration
Umask os.FileMode
ReadOnly bool
MountUid uint32
MountGid uint32