path_id: handle fibre channel

[elogind.git] / extras / path_id / path_id.c

diff --git a/extras/path_id/path_id.c b/extras/path_id/path_id.c
index ce12e92c82789fb287a562e74510df33009ce3a8..379334f02f60693dbe0abef446dc6e8718ce341c 100644 (file)
--- a/extras/path_id/path_id.c
+++ b/extras/path_id/path_id.c
@@ -136,7 +136,40 @@ out:
 
 static struct udev_device *handle_fc(struct udev_device *parent, char **path)
 {
-       path_prepend(path, "fc-PATH_ID_NOT_IMPLEMENTED");
+       struct udev *udev  = udev_device_get_udev(parent);
+       struct udev_device *targetdev = NULL;
+       char *syspath = NULL;
+       struct udev_device *fcdev;
+       const char *port;
+       unsigned int lun;
+
+       targetdev = udev_device_get_parent_with_subsystem_devtype(parent, "scsi", "scsi_target");
+       if (targetdev == NULL) {
+               parent = NULL;
+               goto out;
+       }
+
+       if (asprintf(&syspath, "%s/fc_transport/%s", udev_device_get_syspath(targetdev), udev_device_get_sysname(targetdev)) < 0) {
+               parent = NULL;
+               goto out;
+       }
+       fcdev = udev_device_new_from_syspath(udev, syspath);
+       if (fcdev == NULL) {
+               parent = NULL;
+               goto out;
+       }
+
+       port = udev_device_get_sysattr_value(fcdev, "port_name");
+       if (port == NULL) {
+               parent = NULL;
+               goto out;
+       }
+
+       lun = strtoul(udev_device_get_sysnum(parent), NULL, 10);
+       path_prepend(path, "fc-%s:0x%04x%04x00000000", port, lun & 0xffff, (lun >> 16) & 0xffff);
+out:
+       free(syspath);
+       udev_device_unref(fcdev);
        return parent;
 }