usr/src/sbin/umount/tags

Mumount umount.c        /^main(argc, argv)$/
allocfsent      umount.c        /^allocfsent(fs)$/
badtype umount.c        /^badtype(type, typelist)$/
freefsent       umount.c        /^freefsent(fs)$/
getmntname      umount.c        /^getmntname(name, what, type)$/
maketypelist    umount.c        /^maketypelist(fslist)$/
namematch       umount.c        /^namematch(hp, nfshost)$/
umountall       umount.c        /^umountall(typelist)$/
umountfs        umount.c        /^umountfs(name, typelist)$/
usage   umount.c        /^usage()$/
xdr_dir umount.c        /^xdr_dir(xdrsp, dirp)$/