lsfd: add stubs of target_fd related methods to cdev_class

Signed-off-by: Masatake YAMATO <yamato@redhat.com>

diff --git a/lsfd-cmd/cdev.c b/lsfd-cmd/cdev.c
index 989ffa48125fd74e678f6734918b4f168cf65c55..4c996100bb6f548e7f49bd9346d830a959a7e4a3 100644 (file)
--- a/lsfd-cmd/cdev.c
+++ b/lsfd-cmd/cdev.c
@@ -62,6 +62,10 @@ struct cdev_ops {
                            char **);
        void (*init)(const struct cdev *);
        void (*free)(const struct cdev *);
+
+       bool (*needs_target_fd)(struct cdev *);
+       void (*inspect_target_fd)(struct cdev *, int);
+
        void (*attach_xinfo)(struct cdev *);
        int (*handle_fdinfo)(struct cdev *, const char *, const char *);
        const struct ipc_class * (*get_ipc_class)(struct cdev *);
@@ -788,6 +792,23 @@ static const struct ipc_class *cdev_get_ipc_class(struct file *file)
        return NULL;
 }
 
+static bool cdev_needs_target_fd(struct file *file)
+{
+       struct cdev *cdev = (struct cdev *)file;
+
+       if (cdev->cdev_ops->needs_target_fd)
+               return cdev->cdev_ops->needs_target_fd(cdev);
+       return false;
+}
+
+static void cdev_inspect_target_fd(struct file *file, int fd)
+{
+       struct cdev *cdev = (struct cdev *)file;
+
+       if (cdev->cdev_ops->inspect_target_fd)
+               cdev->cdev_ops->inspect_target_fd(cdev, fd);
+}
+
 const struct file_class cdev_class = {
        .super = &file_class,
        .size = sizeof(struct cdev),
@@ -799,4 +820,6 @@ const struct file_class cdev_class = {
        .attach_xinfo = cdev_attach_xinfo,
        .handle_fdinfo = cdev_handle_fdinfo,
        .get_ipc_class = cdev_get_ipc_class,
+       .needs_target_fd = cdev_needs_target_fd,
+       .inspect_target_fd = cdev_inspect_target_fd,
 };