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From: <hesso@pool.math.tu-berlin.de>
Subject: Insert a safety check to save large files from being overwritten.
diff -Naur nvi-1.81.6.orig/common/exf.c nvi-1.81.6/common/exf.c
--- nvi-1.81.6.orig/common/exf.c 2007-11-18 17:41:42.000000000 +0100
+++ nvi-1.81.6/common/exf.c 2008-05-01 18:09:55.000000000 +0200
@@ -157,6 +157,18 @@
*/
if (file_spath(sp, frp, &sb, &exists))
return (1);
+ /*
+ * On LFS systems, it's possible that stat returned an error because
+ * the file is >2GB, which nvi would normally treat as "doesn't exist"
+ * and eventually overwrite. That's no good. Rather than mess with
+ * every stat() call in file_spath, we'll just check again here.
+ */
+ if (!exists && stat(frp->name, &sb)) {
+ if (errno == EOVERFLOW) {
+ msgq(sp, M_ERR, "File too large (>2GB, probably)");
+ goto err;
+ }
+ }
/*
* Check whether we already have this file opened in some
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