59 #define SM_IO_RD_TIMEOUT(fp, fd, to, timeout, sel_ret)			\  argument
88 		fp->f_r = 0;						\
89 		fp->f_flags |= SMERR;					\
118 sm_lflush(fp, timeout)  in sm_lflush()  argument
119 	SM_FILE_T *fp;  in sm_lflush()
123 	if ((fp->f_flags & (SMLBF|SMWR)) == (SMLBF|SMWR))
124 		return sm_flush(fp, timeout);
141 sm_refill(fp, timeout)  in sm_refill()  argument
142 	register SM_FILE_T *fp;  in sm_refill()
150 		timeout = fp->f_timeout;
160 		fp->f_r = 0; /* just to be sure */
168 	fp->f_r = 0;		/* largely a convenience for callers */
170 	if (fp->f_flags & SMFEOF)
173 	SM_CONVERT_TIME(fp, fd, timeout, &to);
176 	if ((fp->f_flags & SMRD) == 0)
178 		if ((fp->f_flags & SMRW) == 0)
181 			fp->f_flags |= SMERR;
186 		if (fp->f_flags & SMWR)
188 			if (sm_flush(fp, &timeout))
190 			fp->f_flags &= ~SMWR;
191 			fp->f_w = 0;
192 			fp->f_lbfsize = 0;
194 		fp->f_flags |= SMRD;
205 		if (HASUB(fp))
207 			FREEUB(fp);
208 			if ((fp->f_r = fp->f_ur) != 0)
210 				fp->f_p = fp->f_up;
218 	if (fp->f_bf.smb_base == NULL)
219 		sm_makebuf(fp);
226 	if (fp->f_flags & (SMLBF|SMNBF))
234 	if (fp->f_flushfp != NULL &&
235 	    (*fp->f_getinfo)(fp, SM_IO_IS_READABLE, NULL) <= 0)
236 		sm_flush(fp->f_flushfp, &timeout);
238 	fp->f_p = fp->f_bf.smb_base;
250 		r = (*fp->f_read)(fp, (char *)fp->f_p, fp->f_bf.smb_size);
259 			SM_IO_RD_TIMEOUT(fp, fd, &to, timeout, ret);
267 			fp->f_flags |= SMFEOF;
269 			fp->f_flags |= SMERR;
270 		fp->f_r = 0;
273 	fp->f_r = r;
293 sm_rget(fp, timeout)  in sm_rget()  argument
294 	register SM_FILE_T *fp;  in sm_rget()
297 	if (sm_refill(fp, timeout) == 0)
299 		fp->f_r--;
300 		return *fp->f_p++;