ferrno           1532 lib/vfs/direntry.c     vclass->ferrno = vfs_s_ferrno;
ferrno            304 lib/vfs/vfs.c      return vfs->ferrno ? (*vfs->ferrno) (vfs) : E_UNKNOWN;
ferrno            184 lib/vfs/vfs.h      int (*ferrno) (struct vfs_class * me);
ferrno           1737 src/vfs/extfs/extfs.c     vfs_extfs_ops->ferrno = extfs_errno;
ferrno            512 src/vfs/local/local.c     vfs_local_ops->ferrno = local_errno;
ferrno            594 src/vfs/sfs/sfs.c     vfs_sfs_ops->ferrno = local_errno;
ferrno            854 src/vfs/sftpfs/sftpfs.c     vfs_sftpfs_ops->ferrno = sftpfs_cb_errno;