From: Derrick Brashear <shadow@dementia.org>
Date: Tue, 4 Dec 2007 21:08:10 +0000 (+0000)
Subject: largefile-avoid-wraparound-write-to-old-server-20071204
X-Git-Tag: BP-openafs-windows-kdfs-ifs~312
X-Git-Url: https://git.michaelhowe.org/gitweb/?a=commitdiff_plain;h=d13cd42cb4e0b2fe3f91565eac37dc3f3e6d3270;p=packages%2Fo%2Fopenafs.git

largefile-avoid-wraparound-write-to-old-server-20071204

LICENSE IPL10
FIXES 73720

apply analogous check that's in fileserver to clients writing to old servers
---

diff --git a/src/afs/afs_segments.c b/src/afs/afs_segments.c
index e2971af0c..d6d21c715 100644
--- a/src/afs/afs_segments.c
+++ b/src/afs/afs_segments.c
@@ -92,6 +92,10 @@ afs_StoreMini(register struct vcache *avc, struct vrequest *areq)
 		afs_int32 l1, l2;
 		l1 = avc->m.Length;
 		l2 = tlen;
+		if ((avc->m.Length > 0x7fffffff) ||
+		    (tlen > 0x7fffffff) ||
+		    ((0x7fffffff - tlen) < avc->m.Length))
+		    return EFBIG;
 		code =
 		    StartRXAFS_StoreData(tcall,
 					 (struct AFSFid *)&avc->fid.Fid,