Add O_ANYWRITE mask.

examplelib/multizip.go

@@ -13,7 +13,6 @@ path/to/zipfile to /config/zipmount
 import (
 	"github.com/hanwen/go-fuse/fuse"
 	"log"
-	"os"
 	"path/filepath"
 	"sync"
 	"strings"
@@ -186,7 +185,7 @@ func (me *MultiZipFs) Unlink(name string) (code fuse.Status) {
 }
 
 func (me *MultiZipFs) Open(name string, flags uint32) (file fuse.RawFuseFile, code fuse.Status) {
-	if 0 != flags&uint32(os.O_WRONLY|os.O_RDWR|os.O_APPEND) {
+	if 0 != flags&uint32(fuse.O_ANYWRITE) {
 		return nil, fuse.EPERM
 	}
 

examplelib/zipfs.go

@@ -136,6 +136,10 @@ func (me *ZipFileFuse) GetAttr(name string) (*fuse.Attr, fuse.Status) {
 }
 
 func (me *ZipFileFuse) Open(name string, flags uint32) (file fuse.RawFuseFile, code fuse.Status) {
+	if flags & fuse.O_ANYWRITE != 0 {
+		return nil, fuse.EPERM
+	}
+
 	_, zfile := me.tree.Lookup(name)
 	if zfile == nil {
 		return nil, fuse.ENOENT

fuse/types.go

 package fuse
 
 import (
+	"os"
 	"syscall"
 )
 
@@ -80,6 +81,8 @@ const (
 
 	// TODO - get this from a canonical place.
 	PAGESIZE = 4096
+
+	O_ANYWRITE = uint32(os.O_WRONLY|os.O_RDWR|os.O_APPEND|os.O_CREATE|os.O_TRUNC)
 )
 
 type Status int32