diff options
Diffstat (limited to 'internal/fusefrontend/dircache.go')
| -rw-r--r-- | internal/fusefrontend/dircache.go | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/internal/fusefrontend/dircache.go b/internal/fusefrontend/dircache.go index 6d0d570..68fd99c 100644 --- a/internal/fusefrontend/dircache.go +++ b/internal/fusefrontend/dircache.go @@ -35,6 +35,8 @@ type dirCacheEntryStruct struct { func (e *dirCacheEntryStruct) Clear() { // An earlier clear may have already closed the fd, or the cache // has never been filled (fd is 0 in that case). + // Note: package ensurefds012, imported from main, guarantees that dirCache + // can never get fds 0,1,2. if e.fd > 0 { err := syscall.Close(e.fd) if err != nil { @@ -72,6 +74,8 @@ func (d *dirCacheStruct) Clear() { // Store the entry in the cache. The passed "fd" will be Dup()ed, and the caller // can close their copy at will. func (d *dirCacheStruct) Store(dirRelPath string, fd int, iv []byte) { + // Note: package ensurefds012, imported from main, guarantees that dirCache + // can never get fds 0,1,2. if fd <= 0 || len(iv) != nametransform.DirIVLen { log.Panicf("Store sanity check failed: fd=%d len=%d", fd, len(iv)) } |