From c3f9d4939af90eb8e30119601c86c05bde6c7345 Mon Sep 17 00:00:00 2001
From: wdenk <wdenk>
Date: Sun, 14 Mar 2004 00:59:59 +0000
Subject: * Patch by Yuli Barcohen, 4 Mar 2004:   Fix problems with GCC 3.3.x
 which changed handling of global   variables explicitly initialized to zero
 (now in .bss instead of   .data as before).

* Patch by Leon Kukovec, 02 Mar 2004:
  add strswab() to fix IDE LBA capacity, firmware and model numbers
  on little endian machines

* Patch by Masami Komiya, 02 Mar 2004:
  - Remove get_ticks() from NFS code
  - Add verification of RPC transaction ID

* Patch by Pierre Aubert, 02 Mar 2004:
  cleanup for IDE and USB drivers for MPC5200
---
 net/nfs.c | 35 +++++++++++++++++++++--------------
 1 file changed, 21 insertions(+), 14 deletions(-)

(limited to 'net/nfs.c')

diff --git a/net/nfs.c b/net/nfs.c
index 2363d61a33..ca2a108bae 100644
--- a/net/nfs.c
+++ b/net/nfs.c
@@ -37,7 +37,7 @@
 #define NFS_TIMEOUT 10
 
 static int fs_mounted = 0;
-static unsigned long rpc_id;
+static unsigned long rpc_id = 0;
 static int nfs_offset = -1;
 static int nfs_len;
 
@@ -122,17 +122,6 @@ dirname (char *path)
 	return path;
 }
 
-/**************************************************************************
-RPC_INIT - set up the ID counter to something fairly random
-**************************************************************************/
-static void
-rpc_init (void)
-{
-	unsigned long t;
-	t=get_ticks();
-	rpc_id = t ^ (t << 8) ^ (t << 16);
-}
-
 /**************************************************************************
 RPC_ADD_CREDENTIALS - Add RPC authentication/verifier entries
 **************************************************************************/
@@ -189,7 +178,7 @@ rpc_req (int rpc_prog, int rpc_proc, uint32_t *data, int datalen)
 	int pktlen;
 	int sport;
 
-	id = rpc_id++;
+	id = ++rpc_id;
 	pkt.u.call.id = htonl(id);
 	pkt.u.call.type = htonl(MSG_CALL);
 	pkt.u.call.rpcvers = htonl(2);	/* use RPC version 2 */
@@ -410,10 +399,14 @@ rpc_lookup_reply (int prog, uchar *pkt, unsigned len)
 	printf ("%s\n", __FUNCTION__);
 #endif
 
+	if (ntohl(rpc_pkt.u.reply.id) != rpc_id)
+		return -1;
+
 	if (rpc_pkt.u.reply.rstatus  ||
 	    rpc_pkt.u.reply.verifier ||
 	    rpc_pkt.u.reply.astatus  ||
 	    rpc_pkt.u.reply.astatus) {
+		return -1;
 	}
 
 	switch (prog) {
@@ -439,6 +432,9 @@ nfs_mount_reply (uchar *pkt, unsigned len)
 
 	memcpy ((unsigned char *)&rpc_pkt, pkt, len);
 
+	if (ntohl(rpc_pkt.u.reply.id) != rpc_id)
+		return -1;
+
 	if (rpc_pkt.u.reply.rstatus  ||
 	    rpc_pkt.u.reply.verifier ||
 	    rpc_pkt.u.reply.astatus  ||
@@ -463,6 +459,9 @@ nfs_umountall_reply (uchar *pkt, unsigned len)
 
 	memcpy ((unsigned char *)&rpc_pkt, pkt, len);
 
+	if (ntohl(rpc_pkt.u.reply.id) != rpc_id)
+		return -1;
+
 	if (rpc_pkt.u.reply.rstatus  ||
 	    rpc_pkt.u.reply.verifier ||
 	    rpc_pkt.u.reply.astatus) {
@@ -486,6 +485,9 @@ nfs_lookup_reply (uchar *pkt, unsigned len)
 
 	memcpy ((unsigned char *)&rpc_pkt, pkt, len);
 
+	if (ntohl(rpc_pkt.u.reply.id) != rpc_id)
+		return -1;
+
 	if (rpc_pkt.u.reply.rstatus  ||
 	    rpc_pkt.u.reply.verifier ||
 	    rpc_pkt.u.reply.astatus  ||
@@ -510,6 +512,9 @@ nfs_readlink_reply (uchar *pkt, unsigned len)
 
 	memcpy ((unsigned char *)&rpc_pkt, pkt, len);
 
+	if (ntohl(rpc_pkt.u.reply.id) != rpc_id)
+		return -1;
+
 	if (rpc_pkt.u.reply.rstatus  ||
 	    rpc_pkt.u.reply.verifier ||
 	    rpc_pkt.u.reply.astatus  ||
@@ -544,6 +549,9 @@ nfs_read_reply (uchar *pkt, unsigned len)
 
 	memcpy ((uchar *)&rpc_pkt, pkt, sizeof(rpc_pkt.u.reply));
 
+	if (ntohl(rpc_pkt.u.reply.id) != rpc_id)
+		return -1;
+
 	if (rpc_pkt.u.reply.rstatus  ||
 	    rpc_pkt.u.reply.verifier ||
 	    rpc_pkt.u.reply.astatus  ||
@@ -755,7 +763,6 @@ NfsStart (void)
 	NetSetTimeout (NFS_TIMEOUT * CFG_HZ, NfsTimeout);
 	NetSetHandler (NfsHandler);
 
-	rpc_init ();
 	NfsTimeoutCount = 0;
 	NfsState = STATE_PRCLOOKUP_PROG_MOUNT_REQ;
 
-- 
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