D33407.diff
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	diff --git a/stand/libsa/tftp.c b/stand/libsa/tftp.c
	--- a/stand/libsa/tftp.c
	+++ b/stand/libsa/tftp.c
	@@ -114,6 +114,8 @@
	unsigned long tftp_tsize;
	void *pkt;
	struct tftphdr *tftp_hdr;
	+ char *tftp_cache;
	+ bool lastacksent;
	};

	struct tftprecv_extra {
	@@ -378,6 +380,7 @@
	if (res < h->tftp_blksize) {
	h->islastblock = 1; /* very short file */
	tftp_sendack(h, h->currblock);
	+ h->lastacksent = true;
	}
	return (0);
	}
	@@ -594,7 +597,8 @@
	struct tftp_handle *tftpfile;
	tftpfile = f->f_fsdata;

	- /* let it time out ... */
	+ if (tftpfile->lastacksent == false)
	+ tftp_senderr(tftpfile, 0, "No error: file closed");

	if (tftpfile) {
	free(tftpfile->path);