[libvirt] [PATCH 6/8] admin: Introduce virAdmConnectSetLoggingOutputs
Erik Skultety
eskultet at redhat.com
Tue Nov 1 10:27:25 UTC 2016
Enable libvirt users to modify daemon's logging output settings from outside.
If an empty set is passed, a default logging output will be used the same way
as it would be in case writing an empty string to the libvirtd.conf
Signed-off-by: Erik Skultety <eskultet at redhat.com>
---
daemon/admin.c | 21 +++++++++++----------
include/libvirt/libvirt-admin.h | 4 ++++
src/admin/admin_protocol.x | 12 +++++++++++-
src/admin_protocol-structs | 5 +++++
src/libvirt-admin.c | 36 ++++++++++++++++++++++++++++++++++++
src/libvirt_admin_private.syms | 1 +
src/libvirt_admin_public.syms | 1 +
src/util/virlog.c | 5 ++++-
8 files changed, 73 insertions(+), 12 deletions(-)
diff --git a/daemon/admin.c b/daemon/admin.c
index c0598e0..79961b2 100644
--- a/daemon/admin.c
+++ b/daemon/admin.c
@@ -392,17 +392,8 @@ adminConnectGetLoggingOutputs(char **outputs, unsigned int flags)
virCheckFlags(0, -1);
- if ((ret = virLogGetNbOutputs()) > 0) {
- if (!(tmp = virLogGetOutputs()))
+ if ((ret = virLogGetNbOutputs()) > 0 && !(tmp = virLogGetOutputs()))
return -1;
- } else {
- /* there were no outputs defined, return an empty string */
- if (!tmp) {
- if (VIR_ALLOC(tmp) < 0)
- return -1;
- memset(tmp, 0, 1);
- }
- }
*outputs = tmp;
return ret;
@@ -433,6 +424,16 @@ adminConnectGetLoggingFilters(char **filters, unsigned int flags)
}
static int
+adminConnectSetLoggingOutputs(virNetDaemonPtr dmn ATTRIBUTE_UNUSED,
+ const char *outputs,
+ unsigned int flags)
+{
+ virCheckFlags(0, -1);
+
+ return virLogSetOutputs(outputs);
+}
+
+static int
adminDispatchConnectGetLoggingOutputs(virNetServerPtr server ATTRIBUTE_UNUSED,
virNetServerClientPtr client ATTRIBUTE_UNUSED,
virNetMessagePtr msg ATTRIBUTE_UNUSED,
diff --git a/include/libvirt/libvirt-admin.h b/include/libvirt/libvirt-admin.h
index d76ac20..aa33fef 100644
--- a/include/libvirt/libvirt-admin.h
+++ b/include/libvirt/libvirt-admin.h
@@ -412,6 +412,10 @@ int virAdmConnectGetLoggingFilters(virAdmConnectPtr conn,
char **filters,
unsigned int flags);
+int virAdmConnectSetLoggingOutputs(virAdmConnectPtr conn,
+ const char *outputs,
+ unsigned int flags);
+
# ifdef __cplusplus
}
# endif
diff --git a/src/admin/admin_protocol.x b/src/admin/admin_protocol.x
index 69aeb54..4a05928 100644
--- a/src/admin/admin_protocol.x
+++ b/src/admin/admin_protocol.x
@@ -201,6 +201,11 @@ struct admin_connect_get_logging_filters_ret {
unsigned int nfilters;
};
+struct admin_connect_set_logging_outputs_args {
+ admin_nonnull_string outputs;
+ unsigned int flags;
+};
+
/* Define the program number, protocol version and procedure numbers here. */
const ADMIN_PROGRAM = 0x06900690;
const ADMIN_PROTOCOL_VERSION = 1;
@@ -296,5 +301,10 @@ enum admin_procedure {
/**
* @generate: none
*/
- ADMIN_PROC_CONNECT_GET_LOGGING_FILTERS = 15
+ ADMIN_PROC_CONNECT_GET_LOGGING_FILTERS = 15,
+
+ /**
+ * @generate: both
+ */
+ ADMIN_PROC_CONNECT_SET_LOGGING_OUTPUTS = 16
};
diff --git a/src/admin_protocol-structs b/src/admin_protocol-structs
index 41d065d..cbc99e3 100644
--- a/src/admin_protocol-structs
+++ b/src/admin_protocol-structs
@@ -141,6 +141,10 @@ struct admin_connect_get_logging_filters_ret {
admin_nonnull_string filters;
u_int nfilters;
};
+struct admin_connect_set_logging_outputs_args {
+ admin_nonnull_string outputs;
+ u_int flags;
+};
enum admin_procedure {
ADMIN_PROC_CONNECT_OPEN = 1,
ADMIN_PROC_CONNECT_CLOSE = 2,
@@ -157,4 +161,5 @@ enum admin_procedure {
ADMIN_PROC_SERVER_SET_CLIENT_LIMITS = 13,
ADMIN_PROC_CONNECT_GET_LOGGING_OUTPUTS = 14,
ADMIN_PROC_CONNECT_GET_LOGGING_FILTERS = 15,
+ ADMIN_PROC_CONNECT_SET_LOGGING_OUTPUTS = 16,
};
diff --git a/src/libvirt-admin.c b/src/libvirt-admin.c
index 61a538c..01ae26c 100644
--- a/src/libvirt-admin.c
+++ b/src/libvirt-admin.c
@@ -1185,3 +1185,39 @@ virAdmConnectGetLoggingFilters(virAdmConnectPtr conn,
virDispatchError(NULL);
return -1;
}
+
+/**
+ * virAdmConnectSetLoggingOutputs:
+ * @conn: pointer to an active admin connection
+ * @outputs: pointer to a string containing a list of outputs to be defined
+ * @flags: extra flags; not used yet, so callers should always pass 0
+ *
+ * Redefine the existing (set of) outputs(s) with a new one specified in
+ * @outputs. If multiple outputs are specified, they need to be delimited by
+ * spaces. The format of each output must conform to the format described in
+ * daemon's configuration file (e.g. libvirtd.conf).
+ *
+ * Returns 0 if the new output or the set of outputs has been defined
+ * successfully, or -1 in case of an error.
+ */
+int
+virAdmConnectSetLoggingOutputs(virAdmConnectPtr conn,
+ const char *outputs,
+ unsigned int flags)
+{
+ int ret = -1;
+
+ VIR_DEBUG("conn=%p, outputs=%s, flags=%x", conn, outputs, flags);
+
+ virResetLastError();
+ virCheckAdmConnectReturn(conn, -1);
+ virCheckNonNullArgGoto(outputs, error);
+
+ if ((ret = remoteAdminConnectSetLoggingOutputs(conn, outputs, 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 b36880d..d1ca034 100644
--- a/src/libvirt_admin_private.syms
+++ b/src/libvirt_admin_private.syms
@@ -19,6 +19,7 @@ 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_outputs_args;
xdr_admin_server_get_client_limits_args;
xdr_admin_server_get_client_limits_ret;
xdr_admin_server_get_threadpool_parameters_args;
diff --git a/src/libvirt_admin_public.syms b/src/libvirt_admin_public.syms
index e6ee0e8..d39de42 100644
--- a/src/libvirt_admin_public.syms
+++ b/src/libvirt_admin_public.syms
@@ -40,4 +40,5 @@ LIBVIRT_ADMIN_2.0.0 {
virAdmServerSetClientLimits;
virAdmConnectGetLoggingFilters;
virAdmConnectGetLoggingOutputs;
+ virAdmConnectSetLoggingOutputs;
};
diff --git a/src/util/virlog.c b/src/util/virlog.c
index 4ac72dc..d04a461 100644
--- a/src/util/virlog.c
+++ b/src/util/virlog.c
@@ -1820,6 +1820,8 @@ virLogParseFilters(const char *src, virLogFilterPtr **filters)
* @outputs: string defining a (set of) output(s)
*
* Replaces the current set of defined outputs with a new set of outputs.
+ * Should the set be empty, a default output is used according to the daemon's
+ * runtime attributes.
*
* Returns 0 on success or -1 in case of an error.
*/
@@ -1828,12 +1830,13 @@ virLogSetOutputs(const char *src)
{
int ret = -1;
int noutputs = 0;
+ const char *outputstr = *src ? src : virLogGetDefaultOutput();
virLogOutputPtr *outputs = NULL;
if (virLogInitialize() < 0)
return -1;
- if ((noutputs = virLogParseOutputs(src, &outputs)) < 0)
+ if ((noutputs = virLogParseOutputs(outputstr, &outputs)) < 0)
goto cleanup;
if (virLogDefineOutputs(outputs, noutputs) < 0)
--
2.5.5
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