204 	struct iovec *iov;  variable
220 	iov = NULL;
223 	build_iovec(&iov, &iovlen, "fstype", __DECONST(void *, "ffs"), 4);
224 	build_iovec(&iov, &iovlen, "from", mntp->f_mntfromname, (size_t)-1);
225 	build_iovec(&iov, &iovlen, "fspath", mntp->f_mntonname, (size_t)-1);
226 	build_iovec(&iov, &iovlen, "errmsg", errmsg, sizeof(errmsg));
227 	build_iovec(&iov, &iovlen, "update", NULL, 0);
228 	build_iovec(&iov, &iovlen, "reload", NULL, 0);
233 	build_iovec(&iov, &iovlen, "ro", NULL, 0);
234 	error = nmount(iov, iovlen, mntp->f_flags);
235 	free_iovec(&iov, &iovlen);
245 build_iovec(struct iovec **iov, int *iovlen, const char *name, void *val,  in build_iovec()  argument
253 	*iov = realloc(*iov, sizeof **iov * (i + 2));  in build_iovec()
254 	if (*iov == NULL) {  in build_iovec()
258 	(*iov)[i].iov_base = strdup(name);  in build_iovec()
259 	(*iov)[i].iov_len = strlen(name) + 1;  in build_iovec()
261 	(*iov)[i].iov_base = val;  in build_iovec()
268 	(*iov)[i].iov_len = (int)len;  in build_iovec()
277 build_iovec_argf(struct iovec **iov, int *iovlen, const char *name,  in build_iovec_argf()  argument
286 	build_iovec(iov, iovlen, name, strdup(val), (size_t)-1);  in build_iovec_argf()
294 free_iovec(struct iovec **iov, int *iovlen)  in free_iovec()  argument
299 		free((*iov)[i].iov_base);  in free_iovec()
300 	free(*iov);  in free_iovec()