[libvirt PATCH v4 04/25] nodedev: expose internal helper for naming devices

[Jonathon Jongsma <jjongsma@xxxxxxxxxx>]

Expose a helper function that can be used by udev and mdevctl to
generate device names for node devices.

Signed-off-by: Jonathon Jongsma <jjongsma@xxxxxxxxxx>
Reviewed-by: Erik Skultety <eskultet@xxxxxxxxxx>
---
 src/node_device/node_device_driver.c | 25 +++++++++++++++++++++++++
 src/node_device/node_device_driver.h |  6 ++++++
 src/node_device/node_device_udev.c   | 19 +++----------------
 3 files changed, 34 insertions(+), 16 deletions(-)

diff --git a/src/node_device/node_device_driver.c b/src/node_device/node_device_driver.c
index c992251121..6143459618 100644
--- a/src/node_device/node_device_driver.c
+++ b/src/node_device/node_device_driver.c
@@ -968,3 +968,28 @@ nodedevRegister(void)
     return udevNodeRegister();
 #endif
 }
+
+
+void
+nodeDeviceGenerateName(virNodeDeviceDefPtr def,
+                       const char *subsystem,
+                       const char *sysname,
+                       const char *s)
+{
+    size_t i;
+    g_auto(virBuffer) buf = VIR_BUFFER_INITIALIZER;
+
+    virBufferAsprintf(&buf, "%s_%s",
+                      subsystem,
+                      sysname);
+
+    if (s != NULL)
+        virBufferAsprintf(&buf, "_%s", s);
+
+    def->name = virBufferContentAndReset(&buf);
+
+    for (i = 0; i < strlen(def->name); i++) {
+        if (!(g_ascii_isalnum(*(def->name + i))))
+            *(def->name + i) = '_';
+    }
+}
diff --git a/src/node_device/node_device_driver.h b/src/node_device/node_device_driver.h
index 2113d2b0a5..02baf56dab 100644
--- a/src/node_device/node_device_driver.h
+++ b/src/node_device/node_device_driver.h
@@ -118,3 +118,9 @@ nodeDeviceGetMdevctlStartCommand(virNodeDeviceDefPtr def,
                                  char **uuid_out);
 virCommandPtr
 nodeDeviceGetMdevctlStopCommand(const char *uuid);
+
+void
+nodeDeviceGenerateName(virNodeDeviceDefPtr def,
+                       const char *subsystem,
+                       const char *sysname,
+                       const char *s);
diff --git a/src/node_device/node_device_udev.c b/src/node_device/node_device_udev.c
index 3bae579a6c..5d1a192411 100644
--- a/src/node_device/node_device_udev.c
+++ b/src/node_device/node_device_udev.c
@@ -308,22 +308,9 @@ udevGenerateDeviceName(struct udev_device *device,
                        virNodeDeviceDefPtr def,
                        const char *s)
 {
-    size_t i;
-    g_auto(virBuffer) buf = VIR_BUFFER_INITIALIZER;
-
-    virBufferAsprintf(&buf, "%s_%s",
-                      udev_device_get_subsystem(device),
-                      udev_device_get_sysname(device));
-
-    if (s != NULL)
-        virBufferAsprintf(&buf, "_%s", s);
-
-    def->name = virBufferContentAndReset(&buf);
-
-    for (i = 0; i < strlen(def->name); i++) {
-        if (!(g_ascii_isalnum(*(def->name + i))))
-            *(def->name + i) = '_';
-    }
+    nodeDeviceGenerateName(def,
+                           udev_device_get_subsystem(device),
+                           udev_device_get_sysname(device), s);
 
     return 0;
 }
-- 
2.26.2