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[libvirt] [PATCH 34/38] admin: Introduce virAdmConnectSetLoggingLevel



Enable libvirt users to set logging level of a daemon from outside.
---
 daemon/admin.c                  | 10 ++++++++++
 include/libvirt/libvirt-admin.h |  4 ++++
 src/admin/admin_protocol.x      | 12 +++++++++++-
 src/admin_protocol-structs      |  5 +++++
 src/libvirt-admin.c             | 35 +++++++++++++++++++++++++++++++++++
 src/libvirt_admin_private.syms  |  1 +
 src/libvirt_admin_public.syms   |  1 +
 src/util/virlog.c               |  2 --
 8 files changed, 67 insertions(+), 3 deletions(-)

diff --git a/daemon/admin.c b/daemon/admin.c
index 43ba2cb..866717a 100644
--- a/daemon/admin.c
+++ b/daemon/admin.c
@@ -160,6 +160,16 @@ adminConnectGetLoggingFilters(char **filters, unsigned int flags)
 }
 
 static int
+adminConnectSetLoggingLevel(virNetDaemonPtr dmn ATTRIBUTE_UNUSED,
+                            unsigned int priority,
+                            unsigned int flags)
+{
+    virCheckFlags(0, -1);
+
+    return virLogSetDefaultPriority(priority);
+}
+
+static int
 adminConnectGetLoggingOutputs(char **outputs, unsigned int flags)
 {
     char *tmp = NULL;
diff --git a/include/libvirt/libvirt-admin.h b/include/libvirt/libvirt-admin.h
index 9608c42..8f26778 100644
--- a/include/libvirt/libvirt-admin.h
+++ b/include/libvirt/libvirt-admin.h
@@ -120,6 +120,10 @@ int virAdmConnectGetLoggingOutputs(virAdmConnectPtr conn,
                                    char **logOutputs,
                                    unsigned int flags);
 
+int virAdmConnectSetLoggingLevel(virAdmConnectPtr conn,
+                                 unsigned int level,
+                                 unsigned int flags);
+
 # ifdef __cplusplus
 }
 # endif
diff --git a/src/admin/admin_protocol.x b/src/admin/admin_protocol.x
index 2decb1e..c62319c 100644
--- a/src/admin/admin_protocol.x
+++ b/src/admin/admin_protocol.x
@@ -100,6 +100,11 @@ struct admin_connect_get_logging_outputs_ret {
     unsigned int noutputs;
 };
 
+struct admin_connect_set_logging_level_args {
+    unsigned int level;
+    unsigned int flags;
+};
+
 /* Define the program number, protocol version and procedure numbers here. */
 const ADMIN_PROGRAM = 0x06900690;
 const ADMIN_PROTOCOL_VERSION = 1;
@@ -160,5 +165,10 @@ enum admin_procedure {
     /**
      * @generate: none
      */
-    ADMIN_PROC_CONNECT_GET_LOGGING_OUTPUTS = 8
+    ADMIN_PROC_CONNECT_GET_LOGGING_OUTPUTS = 8,
+
+    /**
+     * @generate: both
+     */
+    ADMIN_PROC_CONNECT_SET_LOGGING_LEVEL = 9
 };
diff --git a/src/admin_protocol-structs b/src/admin_protocol-structs
index 8482dee..e6741c3 100644
--- a/src/admin_protocol-structs
+++ b/src/admin_protocol-structs
@@ -46,6 +46,10 @@ struct admin_connect_get_logging_outputs_ret {
         admin_nonnull_string       outputs;
         u_int                      noutputs;
 };
+struct admin_connect_set_logging_level_args {
+        u_int                      level;
+        u_int                      flags;
+};
 enum admin_procedure {
         ADMIN_PROC_CONNECT_OPEN = 1,
         ADMIN_PROC_CONNECT_CLOSE = 2,
@@ -55,4 +59,5 @@ enum admin_procedure {
         ADMIN_PROC_CONNECT_GET_LOGGING_LEVEL = 6,
         ADMIN_PROC_CONNECT_GET_LOGGING_FILTERS = 7,
         ADMIN_PROC_CONNECT_GET_LOGGING_OUTPUTS = 8,
+        ADMIN_PROC_CONNECT_SET_LOGGING_LEVEL = 9,
 };
diff --git a/src/libvirt-admin.c b/src/libvirt-admin.c
index 39a7b02..7b50dcb 100644
--- a/src/libvirt-admin.c
+++ b/src/libvirt-admin.c
@@ -786,3 +786,38 @@ virAdmConnectGetLoggingOutputs(virAdmConnectPtr conn,
     virDispatchError(NULL);
     return -1;
 }
+
+/**
+ * virAdmConnectSetLoggingLevel:
+ * @conn: pointer to an active admin connection
+ * @level: desired logging level, valid values are (see virLogPriority):
+ *      1) VIR_LOG_DEBUG
+ *      2) VIR_LOG_INFO
+ *      3) VIR_LOG_WARNING
+ *      4) VIR_LOG_ERROR
+ * @flags: extra flags; not used yet, so callers should always pass 0
+ *
+ * Set the current global logging level to @level.
+ *
+ * Returns 0 on success, -1 on error.
+ */
+int
+virAdmConnectSetLoggingLevel(virAdmConnectPtr conn,
+                             unsigned int level,
+                             unsigned int flags)
+{
+    int ret = -1;
+
+    VIR_DEBUG("conn=%p, level=%u, flags=%x", conn, level, flags);
+
+    virResetLastError();
+    virCheckAdmConnectReturn(conn, -1);
+
+    if ((ret = remoteAdminConnectSetLoggingLevel(conn, level, flags)) < 0)
+        goto error;
+
+    return ret;
+ error:
+    virDispatchError(NULL);
+    return -1;
+}
diff --git a/src/libvirt_admin_private.syms b/src/libvirt_admin_private.syms
index 2e34178..f94e3f6 100644
--- a/src/libvirt_admin_private.syms
+++ b/src/libvirt_admin_private.syms
@@ -18,6 +18,7 @@ xdr_admin_connect_list_servers_ret;
 xdr_admin_connect_lookup_server_args;
 xdr_admin_connect_lookup_server_ret;
 xdr_admin_connect_open_args;
+xdr_admin_connect_set_logging_level_args;
 
 # datatypes.h
 virAdmConnectClass;
diff --git a/src/libvirt_admin_public.syms b/src/libvirt_admin_public.syms
index 56bb073..0feadee 100644
--- a/src/libvirt_admin_public.syms
+++ b/src/libvirt_admin_public.syms
@@ -28,4 +28,5 @@ LIBVIRT_ADMIN_1.3.0 {
         virAdmServerGetName;
         virAdmServerFree;
         virAdmConnectLookupServer;
+        virAdmConnectSetLoggingLevel;
 };
diff --git a/src/util/virlog.c b/src/util/virlog.c
index 240d6e3..857a326 100644
--- a/src/util/virlog.c
+++ b/src/util/virlog.c
@@ -276,8 +276,6 @@ virLogSetDefaultPriority(virLogPriority priority)
                          "invalid"), priority);
         return -1;
     }
-    if (virLogInitialize() < 0)
-        return -1;
 
     virLogAPILock();
     virLogDefaultPriority = priority;
-- 
2.4.3


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