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support write once read many

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fix https://github.com/seaweedfs/seaweedfs/issues/5954
This commit is contained in:
chrislu 2024-09-04 02:25:07 -07:00
parent 18afdb15b6
commit eb02946c97
5 changed files with 15 additions and 2 deletions
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2
weed/command/mount.go
View File

@ -33,6 +33,7 @@ type MountOptions struct {
localSocket *string
disableXAttr *bool
extraOptions []string
writeOnceReadMany *bool
}
var (
@ -70,6 +71,7 @@ func init() {
mountOptions.debugPort = cmdMount.Flag.Int("debug.port", 6061, "http port for debugging")
mountOptions.localSocket = cmdMount.Flag.String("localSocket", "", "default to /tmp/seaweedfs-mount-<mount_dir_hash>.sock")
mountOptions.disableXAttr = cmdMount.Flag.Bool("disableXAttr", false, "disable xattr")
mountOptions.writeOnceReadMany = cmdMount.Flag.Bool("writeOnceReadMany", false, "write once, read many times")
mountCpuProfile = cmdMount.Flag.String("cpuprofile", "", "cpu profile output file")
mountMemProfile = cmdMount.Flag.String("memprofile", "", "memory profile output file")

1
weed/command/mount_std.go
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@ -247,6 +247,7 @@ func RunMount(option *MountOptions, umask os.FileMode) bool {
Cipher: cipher,
UidGidMapper: uidGidMapper,
DisableXAttr: *option.disableXAttr,
WriteOnceReadMany: *option.writeOnceReadMany,
})
// create mount root

2
weed/mount/weedfs.go
View File

@ -46,6 +46,8 @@ type Option struct {
Quota int64
DisableXAttr bool
WriteOnceReadMany bool
MountUid uint32
MountGid uint32
MountMode os.FileMode

2
weed/mount/weedfs_file_io.go
View File

@ -62,7 +62,7 @@ import (
*/
func (wfs *WFS) Open(cancel <-chan struct{}, in *fuse.OpenIn, out *fuse.OpenOut) (status fuse.Status) {
var fileHandle *FileHandle
fileHandle, status = wfs.AcquireHandle(in.NodeId, in.Uid, in.Gid)
fileHandle, status = wfs.AcquireHandle(in.NodeId, in.Flags, in.Uid, in.Gid)
if status == fuse.OK {
out.Fh = uint64(fileHandle.fh)
// TODO https://github.com/libfuse/libfuse/blob/master/include/fuse_common.h#L64

10
weed/mount/weedfs_filehandle.go
View File

@ -3,12 +3,20 @@ package mount
import (
"github.com/hanwen/go-fuse/v2/fuse"
"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
"time"
)
func (wfs *WFS) AcquireHandle(inode uint64, uid, gid uint32) (fileHandle *FileHandle, status fuse.Status) {
func (wfs *WFS) AcquireHandle(inode uint64, flags, uid, gid uint32) (fileHandle *FileHandle, status fuse.Status) {
var entry *filer_pb.Entry
_, _, entry, status = wfs.maybeReadEntry(inode)
if status == fuse.OK {
if entry != nil && wfs.option.WriteOnceReadMany {
if entry.Attributes.Mtime+10 < time.Now().Unix() {
if flags&fuse.O_ANYWRITE != 0 {
return nil, fuse.EPERM
}
}
}
// need to AcquireFileHandle again to ensure correct handle counter
fileHandle = wfs.fhmap.AcquireFileHandle(wfs, inode, entry)
}