4:41 a.m.
With commit bc2b41778405cc6a376a670703ce63e3678bf1fb
HAVE_LIBVIRT_BACKEND is defined based on the libvirt version (using its
version macro), although libvirt.h is included only after that check:
because of this, variables in the guestfs_h struct after the
HAVE_LIBVIRT_BACKEND block would be used wrongly if libvirt.h was not
included before guestfs-internal.h, like in the recently added
available.c (all the other places using libvirt features in the handle
already happened to do so).
Considering guestfs-internal.h already includes libvirt.h, move its
inclusion up, right before the libvirt version check.
---
src/guestfs-internal.h | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/src/guestfs-internal.h b/src/guestfs-internal.h
index bc03ccc..a9f2f0d 100644
--- a/src/guestfs-internal.h
+++ b/src/guestfs-internal.h
@@ -38,12 +38,11 @@
MIN_LIBVIRT_MINOR * 1000 + \
MIN_LIBVIRT_MICRO)
-#if defined(HAVE_LIBVIRT) && LIBVIR_VERSION_NUMBER >= MIN_LIBVIRT_VERSION
-#define HAVE_LIBVIRT_BACKEND
-#endif
-
#ifdef HAVE_LIBVIRT
#include <libvirt/libvirt.h>
+#if LIBVIR_VERSION_NUMBER >= MIN_LIBVIRT_VERSION
+#define HAVE_LIBVIRT_BACKEND
+#endif
#endif
#include "hash.h"
--
2.1.0
4:41 a.m.
New subject: [PATCH 2/2] lib: do not manually include libvirt.h in .c files
guestfs-internal.h includes it already, so rely on that.
---
src/handle.c | 4 ----
src/launch-libvirt.c | 1 -
src/libvirt-auth.c | 1 -
src/libvirt-domain.c | 1 -
4 files changed, 7 deletions(-)
diff --git a/src/handle.c b/src/handle.c
index f7b0909..15fd104 100644
--- a/src/handle.c
+++ b/src/handle.c
@@ -23,10 +23,6 @@
#include <string.h>
#include <libintl.h>
-#ifdef HAVE_LIBVIRT
-#include <libvirt/libvirt.h>
-#endif
-
#include <libxml/parser.h>
#include <libxml/xmlversion.h>
diff --git a/src/launch-libvirt.c b/src/launch-libvirt.c
index fae8e5d..9e108aa 100644
--- a/src/launch-libvirt.c
+++ b/src/launch-libvirt.c
@@ -33,7 +33,6 @@
#include <sys/un.h> /* sockaddr_un */
#ifdef HAVE_LIBVIRT
-#include <libvirt/libvirt.h>
#include <libvirt/virterror.h>
#endif
diff --git a/src/libvirt-auth.c b/src/libvirt-auth.c
index dad61cd..cbc2461 100644
--- a/src/libvirt-auth.c
+++ b/src/libvirt-auth.c
@@ -25,7 +25,6 @@
#include <libintl.h>
#ifdef HAVE_LIBVIRT
-#include <libvirt/libvirt.h>
#include <libvirt/virterror.h>
#endif
diff --git a/src/libvirt-domain.c b/src/libvirt-domain.c
index 124eef0..b096fb3 100644
--- a/src/libvirt-domain.c
+++ b/src/libvirt-domain.c
@@ -26,7 +26,6 @@
#include <libintl.h>
#ifdef HAVE_LIBVIRT
-#include <libvirt/libvirt.h>
#include <libvirt/virterror.h>
#endif
--
2.1.0
8:37 a.m.
On Mon, Nov 09, 2015 at 11:41:30AM +0100, Pino Toscano wrote:
With commit bc2b41778405cc6a376a670703ce63e3678bf1fb
HAVE_LIBVIRT_BACKEND is defined based on the libvirt version (using its
version macro), although libvirt.h is included only after that check:
because of this, variables in the guestfs_h struct after the
HAVE_LIBVIRT_BACKEND block would be used wrongly if libvirt.h was not
included before guestfs-internal.h, like in the recently added
available.c (all the other places using libvirt features in the handle
already happened to do so).
!!!
Yes, I knew it would turn out to be memory corruption. ACK series.
/me wonders how to avoid such problems in general ...
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
virt-top is 'top' for virtual machines. Tiny program with many
powerful monitoring features, net stats, disk stats, logging, etc.
http://people.redhat.com/~rjones/virt-top
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2 comments
2 participants
participants (2)
-
Pino Toscano -
Richard W.M. Jones