sbput
int sbput(int, struct fs *, int);
if ((errno = sbput(disk->d_fd, fs, all ? fs->fs_ncg : 0)) != 0) {
if (sbput(fd, bp->b_un.b_fs, 0) == 0)
if (sbput(fswritefd, &sblock, sblock.fs_ncg) == 0)
if (sbput(devfd, sblock, sblock->fs_ncg) != 0) {
if (!Nflag && sbput(fso, &sblock, sblock.fs_ncg) != 0)