From 58ab1b6f899e664cb812015d70ef0d4250be238e Mon Sep 17 00:00:00 2001
From: Erik Skultety <eskultet@redhat.com>
Date: Tue, 29 Mar 2016 17:04:36 +0200
Subject: [PATCH] virlog: Introduce virLogDefineFilters

Prepare a method that only defines a set of filters. It takes a list of
filters, preferably created by virLogParseFilters. The original set of filters
is reset and replaced by the new user-provided set of filters.

Signed-off-by: Erik Skultety <eskultet@redhat.com>
---
 src/libvirt_private.syms |  1 +
 src/util/virlog.c        | 27 +++++++++++++++++++++++++++
 src/util/virlog.h        |  1 +
 3 files changed, 29 insertions(+)

diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 5914769acf..4a0acdf90b 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -1870,6 +1870,7 @@ virLockSpaceReleaseResourcesForOwner;
 
 # util/virlog.h
 virLogDefineFilter;
+virLogDefineFilters;
 virLogDefineOutput;
 virLogDefineOutputs;
 virLogFilterFree;
diff --git a/src/util/virlog.c b/src/util/virlog.c
index 5543a11350..b087137c69 100644
--- a/src/util/virlog.c
+++ b/src/util/virlog.c
@@ -1706,3 +1706,30 @@ virLogDefineOutputs(virLogOutputPtr *outputs, size_t noutputs)
 
     return 0;
 }
+
+
+/**
+ * virLogDefineFilters:
+ * @filters: new set of filters to be defined
+ * @nfilters: number of filters in @filters
+ *
+ * Resets any existing set of filters and defines a completely new one. The
+ * resulting set can also be empty in which case NULL should be passed to
+ * @filters.
+ *
+ * Returns 0 on success or -1 in case of error.
+ */
+int
+virLogDefineFilters(virLogFilterPtr *filters, size_t nfilters)
+{
+    if (virLogInitialize() < 0)
+        return -1;
+
+    virLogLock();
+    virLogResetFilters();
+    virLogFilters = filters;
+    virLogNbFilters = nfilters;
+    virLogUnlock();
+
+    return 0;
+}
diff --git a/src/util/virlog.h b/src/util/virlog.h
index 3c4cd556e2..d6d65bad87 100644
--- a/src/util/virlog.h
+++ b/src/util/virlog.h
@@ -239,5 +239,6 @@ int virLogFindOutput(virLogOutputPtr *outputs, size_t noutputs,
                      virLogDestination dest, const void *opaque);
 int virLogDefineOutputs(virLogOutputPtr *outputs,
                         size_t noutputs) ATTRIBUTE_NONNULL(1);
+int virLogDefineFilters(virLogFilterPtr *filters, size_t nfilters);
 
 #endif