From: Olaf Hering <olaf@aepfle.de>
Date: Wed, 23 Sep 2020 06:48:40 +0000 (+0200)
Subject: tools/libxc: report malloc errors in writev_exact
X-Git-Tag: archive/raspbian/4.14.0+80-gd101b417b7-1+rpi1^2~33^2~5
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=89ae1b185a193fea8e86840c48a2711f04042415;p=xen.git

tools/libxc: report malloc errors in writev_exact

The caller of writev_exact should be notified about malloc errors
when dealing with partial writes.

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Wei Liu <wl@xen.org>
(cherry picked from commit 0d8d289af7a679c028462c4ed5d98586f9ef9648)
---

diff --git a/tools/libxc/xc_private.c b/tools/libxc/xc_private.c
index 90974d572e..13a2c723c1 100644
--- a/tools/libxc/xc_private.c
+++ b/tools/libxc/xc_private.c
@@ -722,6 +722,7 @@ int writev_exact(int fd, const struct iovec *iov, int iovcnt)
                     if ( !local_iov )
                     {
                         saved_errno = ENOMEM;
+                        rc = -1;
                         goto out;
                     }