func TestCreationChecks(t *testing.T) {
wd, clean := setup(t)
defer clean()
err := os.Mkdir(wd+"/store/foo", 0755)
CheckSuccess(err)
os.Symlink(wd+"/ro", wd+"/store/foo/READONLY")
CheckSuccess(err)
err = os.Mkdir(wd+"/store/ws2", 0755)
CheckSuccess(err)
os.Symlink(wd+"/ro", wd+"/store/ws2/READONLY")
CheckSuccess(err)
err = os.Symlink(wd+"/store/foo", wd+"/mount/config/bar")
CheckSuccess(err)
err = os.Symlink(wd+"/store/foo", wd+"/mount/config/foo")
code := fuse.OsErrorToErrno(err)
if code != fuse.EBUSY {
t.Error("Should return EBUSY", err)
}
err = os.Symlink(wd+"/store/ws2", wd+"/mount/config/config")
code = fuse.OsErrorToErrno(err)
if code != fuse.EINVAL {
t.Error("Should return EINVAL", err)
}
}
func (me *UnionFs) GetAttr(name string) (a *os.FileInfo, s fuse.Status) {
if name == _READONLY {
return nil, fuse.ENOENT
}
if name == _DROP_CACHE {
return &os.FileInfo{
Mode: fuse.S_IFREG | 0777,
}, fuse.OK
}
if name == me.options.DeletionDirName {
return nil, fuse.ENOENT
}
isDel, err := me.isDeleted(name)
if err != nil {
return nil, fuse.OsErrorToErrno(err)
}
if isDel {
return nil, fuse.ENOENT
}
r := me.getBranch(name)
if r.branch < 0 {
return nil, fuse.ENOENT
}
return r.attr, r.code
}
func TestChmod(t *testing.T) {
wd, clean := setupUfs(t)
defer clean()
ro_fn := wd + "/ro/file"
m_fn := wd + "/mount/file"
writeToFile(ro_fn, "a")
err := os.Chmod(m_fn, 07070)
CheckSuccess(err)
err = os.Chown(m_fn, 0, 0)
code := fuse.OsErrorToErrno(err)
if code != fuse.EPERM {
t.Error("Unexpected error code", code, err)
}
fi, err := os.Lstat(m_fn)
CheckSuccess(err)
if fi.Mode&07777 != 07272 {
t.Errorf("Unexpected mode found: %o", fi.Mode)
}
_, err = os.Lstat(wd + "/rw/file")
if err != nil {
t.Errorf("File not promoted")
}
}
func (me *ProcFs) Open(name string, flags uint32, context *fuse.Context) (fuse.File, fuse.Status) {
p := me.LoopbackFileSystem.GetPath(name)
content, err := ioutil.ReadFile(p)
if err == nil {
return fuse.NewReadOnlyFile(content), fuse.OK
}
return nil, fuse.OsErrorToErrno(err)
}
func (me *RpcFs) Open(name string, flags uint32, context *fuse.Context) (fuse.File, fuse.Status) {
if flags&fuse.O_ANYWRITE != 0 {
return nil, fuse.EPERM
}
a := me.getFileAttr(name)
if a == nil {
return nil, fuse.ENOENT
}
if !a.Status.Ok() {
return nil, a.Status
}
if contents := me.cache.ContentsIfLoaded(a.Hash); contents != nil {
return &fuse.WithFlags{
File: fuse.NewReadOnlyFile(contents),
FuseFlags: fuse.FOPEN_KEEP_CACHE,
}, fuse.OK
}
p := me.cache.Path(a.Hash)
if _, err := os.Lstat(p); fuse.OsErrorToErrno(err) == fuse.ENOENT {
log.Printf("Fetching contents for file %s: %x", name, a.Hash)
err = me.FetchHash(a.FileInfo.Size, a.Hash)
// should return something else?
if err != nil {
return nil, fuse.ENOENT
}
}
f, err := os.Open(p)
if err != nil {
return nil, fuse.OsErrorToErrno(err)
}
return &fuse.WithFlags{
File: &rpcFsFile{
fuse.LoopbackFile{File: f},
*a.FileInfo,
},
FuseFlags: fuse.FOPEN_KEEP_CACHE,
}, fuse.OK
}
func (me *RpcFs) Open(name string, flags uint32) (fuse.File, fuse.Status) {
if flags&fuse.O_ANYWRITE != 0 {
return nil, fuse.EPERM
}
a := me.getAttrResponse(name)
if !a.Status.Ok() {
return nil, a.Status
}
p := me.cache.Path(a.Hash)
if _, err := os.Lstat(p); fuse.OsErrorToErrno(err) == fuse.ENOENT {
log.Printf("Fetching contents for file %s", name)
me.FetchHash(a.FileInfo.Size, a.Hash)
}
f, err := os.Open(p)
if err != nil {
return nil, fuse.OsErrorToErrno(err)
}
return &fuse.LoopbackFile{File: f}, fuse.OK
}
func TestChown(t *testing.T) {
wd, clean := setupUfs(t)
defer clean()
ro_fn := wd + "/ro/file"
m_fn := wd + "/mount/file"
writeToFile(ro_fn, "a")
err := os.Chown(m_fn, 0, 0)
code := fuse.OsErrorToErrno(err)
if code != fuse.EPERM {
t.Error("Unexpected error code", code, err)
}
}
func (me *FsServer) oneGetAttr(name string) (rep *FileAttr) {
// TODO - this is not a good security measure, as we are not
// checking the prefix; someone might directly ask for
// /forbidden/subdir/
if me.excluded[name] {
return &FileAttr{
Path: name,
Status: fuse.ENOENT,
}
}
me.attrCacheMutex.RLock()
rep, ok := me.attrCache[name]
me.attrCacheMutex.RUnlock()
if ok {
return rep
}
me.attrCacheMutex.Lock()
defer me.attrCacheMutex.Unlock()
for me.attrCacheBusy[name] && me.attrCache[name] == nil {
me.attrCacheCond.Wait()
}
rep, ok = me.attrCache[name]
if ok {
return rep
}
me.attrCacheBusy[name] = true
me.attrCacheMutex.Unlock()
p := me.path(name)
fi, err := os.Lstat(p)
rep = &FileAttr{
FileInfo: fi,
Status: fuse.OsErrorToErrno(err),
Path: name,
}
if fi != nil {
me.fillContent(rep)
}
me.attrCacheMutex.Lock()
me.attrCache[name] = rep
me.attrCacheCond.Broadcast()
me.attrCacheBusy[name] = false, false
return rep
}
func (me *FsServer) GetAttr(req *AttrRequest, rep *AttrResponse) os.Error {
log.Println("GetAttr req", req.Name)
if me.excluded[req.Name] {
rep.Status = fuse.ENOENT
return nil
}
fi, err := os.Lstat(me.path(req.Name))
rep.FileInfo = fi
rep.Status = fuse.OsErrorToErrno(err)
if fi == nil {
return nil
}
if fi.IsSymlink() {
rep.Link, err = os.Readlink(req.Name)
}
if fi.IsRegular() {
rep.Hash = me.cache.SavePath(req.Name)
}
log.Println("GetAttr", req.Name, rep)
return nil
}
