strealloc
cp->def_opts = strealloc(cp->def_opts, cp->auto_opts);
auto_opts = strealloc(auto_opts, dfl);
mf->mf_mount = strealloc(mf->mf_mount, pid_fsname);
mf->mf_info = strealloc(mf->mf_info, mp->am_parent->am_mnt->mf_info);
cp->def_opts = strealloc(cp->def_opts, *cp->ivec+1);
mf->mf_auto = strealloc(mf->mf_auto, auto_opts);
mf->mf_mopts = strealloc(mf->mf_mopts, mopts);
mf->mf_remopts = strealloc(mf->mf_remopts, remopts);
mf->mf_info = strealloc(mf->mf_info, info);
*chp = strealloc(*chp, hp->h_name);
extern char *strealloc(char *, char *);