commit 1610d4872387cb3e06ec718fc70ddab17fa23bc8
from: Omar Polo <op@omarpolo.com>
date: Mon May 23 13:23:45 2022 UTC

cmd_ls: fix read size

don't use a constant: msize may be lower than that.  Instead, use `msize
- 4' which is guaranteed to be the maximum transferreable size.

(it's not possible for msize to be lower than 4 since we reject
ridiculously small msizes, so that difference can't underflow.)

commit - 315eafe8807c0b6bf7a0a3d2ae072cbb6fa6392a
commit + 1610d4872387cb3e06ec718fc70ddab17fa23bc8
blob - bcfcd2b4e70e22494a8c0c738d9768d0ff5ee00c
blob + b9e9e26a6ba604b9615317316af4c55ae689459a
--- kamiftp/ftp.c
+++ kamiftp/ftp.c
@@ -1288,7 +1288,7 @@ cmd_ls(int argc, const char **argv)
 	evbuffer_drain(dirbuf, EVBUFFER_LENGTH(dirbuf));
 
 	for (;;) {
-		tread(nfid, off, BUFSIZ);
+		tread(nfid, off, msize - 4);
 		do_send();
 		recv_msg();
 		expect2(Rread, iota_tag);