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Diffstat (limited to 'net/tftp.c')
-rw-r--r--net/tftp.c28
1 files changed, 20 insertions, 8 deletions
diff --git a/net/tftp.c b/net/tftp.c
index 64a5576663..03a002767a 100644
--- a/net/tftp.c
+++ b/net/tftp.c
@@ -106,6 +106,7 @@ TftpSend (void)
volatile uchar * pkt;
volatile uchar * xp;
int len = 0;
+ volatile ushort *s;
/*
* We will always be sending some sort of packet, so
@@ -117,7 +118,9 @@ TftpSend (void)
case STATE_RRQ:
xp = pkt;
- *((ushort *)pkt)++ = htons(TFTP_RRQ);
+ s = (ushort *)pkt;
+ *s++ = htons(TFTP_RRQ);
+ pkt = (uchar *)s;
strcpy ((char *)pkt, tftp_filename);
pkt += strlen(tftp_filename) + 1;
strcpy ((char *)pkt, "octet");
@@ -135,15 +138,19 @@ TftpSend (void)
case STATE_DATA:
case STATE_OACK:
xp = pkt;
- *((ushort *)pkt)++ = htons(TFTP_ACK);
- *((ushort *)pkt)++ = htons(TftpBlock);
+ s = (ushort *)pkt;
+ *s++ = htons(TFTP_ACK);
+ *s++ = htons(TftpBlock);
+ pkt = (uchar *)s;
len = pkt - xp;
break;
case STATE_TOO_LARGE:
xp = pkt;
- *((ushort *)pkt)++ = htons(TFTP_ERROR);
- *((ushort *)pkt)++ = htons(3);
+ s = (ushort *)pkt;
+ *s++ = htons(TFTP_ERROR);
+ *s++ = htons(3);
+ pkt = (uchar *)s;
strcpy ((char *)pkt, "File too large");
pkt += 14 /*strlen("File too large")*/ + 1;
len = pkt - xp;
@@ -151,8 +158,10 @@ TftpSend (void)
case STATE_BAD_MAGIC:
xp = pkt;
- *((ushort *)pkt)++ = htons(TFTP_ERROR);
- *((ushort *)pkt)++ = htons(2);
+ s = (ushort *)pkt;
+ *s++ = htons(TFTP_ERROR);
+ *s++ = htons(2);
+ pkt = (uchar *)s;
strcpy ((char *)pkt, "File has bad magic");
pkt += 18 /*strlen("File has bad magic")*/ + 1;
len = pkt - xp;
@@ -167,6 +176,7 @@ static void
TftpHandler (uchar * pkt, unsigned dest, unsigned src, unsigned len)
{
ushort proto;
+ ushort *s;
if (dest != TftpOurPort) {
return;
@@ -180,7 +190,9 @@ TftpHandler (uchar * pkt, unsigned dest, unsigned src, unsigned len)
}
len -= 2;
/* warning: don't use increment (++) in ntohs() macros!! */
- proto = *((ushort *)pkt)++;
+ s = (ushort *)pkt;
+ proto = *s++;
+ pkt = (uchar *)s;
switch (ntohs(proto)) {
case TFTP_RRQ: