[PATCH] implement printf-like placeholder support for NAME

[elogind.git] / namedev.c

diff --git a/namedev.c b/namedev.c
index d76d03b490be1747283a0b4768dc7fb3891adcd0..f6be43ef51bb841220e273798442e93c97868df5 100644 (file)
--- a/namedev.c
+++ b/namedev.c
@@ -817,6 +817,37 @@ static int get_attr(struct sysfs_class_device *class_dev, struct udevice *udev)
        strcpy(udev->name, class_dev->name);
 
 done:
+       /* substitute placeholder in NAME  */
+       while (1) {
+               pos = strchr(udev->name, '%');
+               if (pos) {
+                       strcpy(name, pos+2);
+                       *pos = 0x00;
+                       switch (pos[1]) {
+                       case 'n':
+                               dig = class_dev->name + strlen(class_dev->name);
+                               while (isdigit(*(dig-1)))
+                                       dig--;
+                               strcat(udev->name, dig);
+                               dbg_parse("kernel number appended: %s", dig);
+                               break;
+                       case 'm':
+                               sprintf(pos, "%u", udev->minor);
+                               dbg_parse("minor number appended: %u", udev->minor);
+                               break;
+                       case 'M':
+                               sprintf(pos, "%u", udev->major);
+                               dbg_parse("major number appended: %u", udev->major);
+                               break;
+                       default:
+                               dbg_parse("unknown substitution type: %%%c", pos[1]);
+                               break;
+                       }
+                       strcat(udev->name, name);
+               } else
+                       break;
+       }
+
        /* mode was never set above */
        if (!udev->mode) {
                udev->mode = get_default_mode(class_dev);