apply new hurd patch to my tree

[debian/pax] / file_subs.c

diff --git a/file_subs.c b/file_subs.c
index 4191b92969a9787a0ff4102b00e692b224b8b1d4..e32f7ef450295e82618b4fea2271eeba6f3772e4 100644 (file)
--- a/file_subs.c
+++ b/file_subs.c
@@ -382,7 +382,7 @@ node_creat(ARCHD *arcn)
                                                return(-1);
                                        }
                                        len = readlink(nm, target,
-                                           sb.st_size);
+                                           sb.st_size + 1);
                                        if (len == -1) {
                                                syswarn(0, errno,
                                                   "cannot follow symlink %s in chain for %s",
@@ -390,6 +390,14 @@ node_creat(ARCHD *arcn)
                                                res = -1;
                                                goto badlink;
                                        }
+                                       if (len > sb.st_size) {
+                                               syswarn(0, errno,
+                                                  "symlink %s increased in size between lstat() and readlink() for %s",
+                                                   nm, arcn->name);
+
+                                               res = -1;
+                                               goto badlink;
+                                       }
                                        target[len] = '\0';
                                        nm = target;
                                }