mode_t           4140 io.c               mode_t perm;
mode_t           4151 io.c           rb_sysopen_internal(const char *fname, int oflags, mode_t perm)
mode_t           4161 io.c           rb_sysopen(const char *fname, int oflags, mode_t perm)
mode_t           4230 io.c           rb_file_open_generic(VALUE io, VALUE filename, int oflags, int fmode, convconfig_t *convconfig, mode_t perm)
mode_t           4865 io.c                   convconfig_t *convconfig_p, mode_t *perm_p)
mode_t           4869 io.c               mode_t perm;
mode_t           4910 io.c               mode_t perm;
mode_t           4979 io.c               mode_t perm;
mode_t           5168 io.c               mode_t perm;
mode_t           1415 process.c                  mode_t cmask = NUM2LONG(val);
mode_t           1740 process.c      redirect_open(const char *pathname, int flags, mode_t perm)
mode_t           2102 process.c              mode_t mask = NUM2LONG(obj);
mode_t           2103 process.c              mode_t oldmask = umask(mask); /* never fail */