virtiofsctl can control a running virtiofsd process:
usage: ./virtiofsctl COMMAND [args...]
Commands:
get-log-level - show current log level
set-log-level LEVEL - set current log level to one of
"err", "warning", "info", "debug"
Make sure it is running in the same DBus session as virtiofsd. This may
require setting the DBUS_SESSION_BUS_ADDRESS environment variable to the
same value as used by virtiofsd.
Signed-off-by: Stefan Hajnoczi <stefa...@redhat.com>
---
Makefile | 3 ++
Makefile.objs | 1 +
contrib/virtiofsd/Makefile.objs | 3 ++
contrib/virtiofsd/virtiofsctl.c | 55 +++++++++++++++++++++++++++++++++
4 files changed, 62 insertions(+)
create mode 100644 contrib/virtiofsd/virtiofsctl.c
diff --git a/Makefile b/Makefile
index 6b1af33348..d7ed9e7669 100644
--- a/Makefile
+++ b/Makefile
@@ -419,6 +419,7 @@ dummy := $(call unnest-vars,, \
ivshmem-client-obj-y \
ivshmem-server-obj-y \
virtiofsd-obj-y \
+ virtiofsctl-obj-y \
rdmacm-mux-obj-y \
libvhost-user-obj-y \
vhost-user-scsi-obj-y \
@@ -661,6 +662,8 @@ contrib/virtiofsd/gdbus_generated.c-timestamp:
$(SRC_PATH)/contrib/virtiofsd/org
virtiofsd$(EXESUF): $(virtiofsd-obj-y) libvhost-user.a $(COMMON_LDADDS)
$(call LINK, $^)
+virtiofsctl$(EXESUF): $(virtiofsctl-obj-y)
+ $(call LINK, $^)
endif
vhost-user-gpu$(EXESUF): $(vhost-user-gpu-obj-y) $(libvhost-user-obj-y)
libqemuutil.a libqemustub.a
diff --git a/Makefile.objs b/Makefile.objs
index dfdd7d56ea..326a8abb8e 100644
--- a/Makefile.objs
+++ b/Makefile.objs
@@ -126,6 +126,7 @@ rdmacm-mux-obj-y = contrib/rdmacm-mux/
vhost-user-input-obj-y = contrib/vhost-user-input/
vhost-user-gpu-obj-y = contrib/vhost-user-gpu/
virtiofsd-obj-y = contrib/virtiofsd/
+virtiofsctl-obj-y = contrib/virtiofsd/
######################################################################
trace-events-subdirs =
diff --git a/contrib/virtiofsd/Makefile.objs b/contrib/virtiofsd/Makefile.objs
index d59ab60f3d..3f944d493e 100644
--- a/contrib/virtiofsd/Makefile.objs
+++ b/contrib/virtiofsd/Makefile.objs
@@ -11,6 +11,9 @@ virtiofsd-obj-y = buffer.o \
gdbus_generated.o \
dbus.o
+virtiofsctl-obj-y = virtiofsctl.o \
+ gdbus_generated.o
+
seccomp.o-cflags := $(SECCOMP_CFLAGS)
seccomp.o-libs := $(SECCOMP_LIBS)
diff --git a/contrib/virtiofsd/virtiofsctl.c b/contrib/virtiofsd/virtiofsctl.c
new file mode 100644
index 0000000000..39bee2b881
--- /dev/null
+++ b/contrib/virtiofsd/virtiofsctl.c
@@ -0,0 +1,55 @@
+#include <stdio.h>
+#include "gdbus_generated.h"
+
+static void get_log_level(Virtiofsd *virtiofsd)
+{
+ const char *value = virtiofsd_get_log_level(virtiofsd);
+
+ printf("%s\n", value ? value : "(null)");
+}
+
+static void set_log_level(Virtiofsd *virtiofsd, const char *value)
+{
+ virtiofsd_set_log_level(virtiofsd, value);
+}
+
+static void usage(const char *progname)
+{
+ printf("usage: %s COMMAND [args...]\n", progname);
+ printf("\n");
+ printf("Commands:\n");
+ printf(" get-log-level - show current log level\n");
+ printf(" set-log-level LEVEL - set current log level to one of\n");
+ printf(" \"err\", \"warning\", \"info\",
\"debug\"\n");
+ exit(0);
+}
+
+int main(int argc, char **argv)
+{
+ Virtiofsd *virtiofsd;
+ GError *error = NULL;
+
+ if (argc < 2) {
+ usage(argv[0]);
+ }
+
+ virtiofsd = virtiofsd_proxy_new_for_bus_sync(G_BUS_TYPE_SESSION,
+ G_DBUS_PROXY_FLAGS_NONE, "org.qemu.virtiofsd",
+ "/org/qemu/virtiofsd", NULL, &error);
+ if (error) {
+ fprintf(stderr, "%s\n", error->message);
+ g_error_free(error);
+ return 1;
+ }
+
+ if (strcmp(argv[0], "get-log-level") == 0) {
+ get_log_level(virtiofsd);
+ } else if (strcmp(argv[0], "set-log-level") == 0) {
+ if (argc != 3) {
+ usage(argv[0]);
+ }
+ set_log_level(virtiofsd, argv[2]);
+ }
+ g_object_unref(virtiofsd);
+ return 0;
+}
--
2.21.0
