99 static ssize_t tftp_size_of_file(struct tftp_handle *tftpfile);
254 	struct tftp_handle *tftpfile;  in tftp_open()  local
258 	tftpfile = (struct tftp_handle *)alloc(sizeof(*tftpfile));  in tftp_open()
259 	if (!tftpfile)  in tftp_open()
262 	tftpfile->iodesc = io = socktodesc(*(int *)(f->f_devdata));  in tftp_open()
264 	tftpfile->off = 0;  in tftp_open()
265 	tftpfile->path = path;	/* XXXXXXX we hope it's static */  in tftp_open()
267 	res = tftp_makereq(tftpfile);  in tftp_open()
270 		dealloc(tftpfile, sizeof(*tftpfile));  in tftp_open()
273 	f->f_fsdata = (void *)tftpfile;  in tftp_open()
281 	struct tftp_handle *tftpfile;  in tftp_read()  local
285 	tftpfile = (struct tftp_handle *)f->f_fsdata;  in tftp_read()
291 		needblock = tftpfile->off / SEGSIZE + 1;  in tftp_read()
293 		if (tftpfile->currblock > needblock) {	/* seek backwards */  in tftp_read()
295 			tftp_terminate(tftpfile);  in tftp_read()
297 			tftp_makereq(tftpfile);	/* no error check, it worked  in tftp_read()
301 		while (tftpfile->currblock < needblock) {  in tftp_read()
309 			res = tftp_getnextblock(tftpfile);  in tftp_read()
313 				    __func__, tftpfile->currblock, needblock);  in tftp_read()
317 			if (tftpfile->islastblock)  in tftp_read()
321 		if (tftpfile->currblock == needblock) {  in tftp_read()
324 			offinblock = tftpfile->off % SEGSIZE;  in tftp_read()
326 			if ((int)offinblock > tftpfile->validsize) {  in tftp_read()
329 				    tftpfile->off);  in tftp_read()
333 			inbuffer = tftpfile->validsize - offinblock;  in tftp_read()
336 			    tftpfile->lastdata.t.th_data + offinblock,  in tftp_read()
340 			tftpfile->off += count;  in tftp_read()
343 			if ((tftpfile->islastblock) && (count == inbuffer))  in tftp_read()
363 	struct tftp_handle *tftpfile;  in tftp_close()  local
364 	tftpfile = (struct tftp_handle *)f->f_fsdata;  in tftp_close()
369 	tftp_terminate(tftpfile);  in tftp_close()
372 	dealloc(tftpfile, sizeof(*tftpfile));  in tftp_close()
384 tftp_size_of_file(struct tftp_handle *tftpfile)  in tftp_size_of_file()  argument
388 	if (tftpfile->currblock > 1) {	/* move to start of file */  in tftp_size_of_file()
390 		tftp_terminate(tftpfile);  in tftp_size_of_file()
392 		tftp_makereq(tftpfile);	/* no error check, it worked  in tftp_size_of_file()
397 	filesize = tftpfile->validsize;  in tftp_size_of_file()
400 	while (!tftpfile->islastblock) {  in tftp_size_of_file()
403 		res = tftp_getnextblock(tftpfile);  in tftp_size_of_file()
407 			    __func__, tftpfile->currblock);  in tftp_size_of_file()
411 		filesize += tftpfile->validsize;  in tftp_size_of_file()
422 	struct tftp_handle *tftpfile;  in tftp_stat()  local
423 	tftpfile = (struct tftp_handle *)f->f_fsdata;  in tftp_stat()
429 	sb->st_size = tftp_size_of_file(tftpfile);  in tftp_stat()
445 	struct tftp_handle *tftpfile;  in tftp_seek()  local
446 	tftpfile = (struct tftp_handle *)f->f_fsdata;  in tftp_seek()
450 		tftpfile->off = offset;  in tftp_seek()
453 		tftpfile->off += offset;  in tftp_seek()
459 	return tftpfile->off;  in tftp_seek()