+ }
+ /* strip trailing whitespace of matching value */
+ if (isspace(tmpattr->value[strlen(tmpattr->value)-1])) {
+ i = len = strlen(tmpattr->value);
+ while (i > 0 && isspace(tmpattr->value[i-1]))
+ i--;
+ if (i < len) {
+ tmpattr->value[i] = '\0';
+ dbg("remove %i trailing whitespace chars from '%s'",
+ len - i, tmpattr->value);
+ }
+ }
+ strfieldcatmax(string, tmpattr->value, maxsize);
+ dbg("substitute sysfs value '%s'", tmpattr->value);
+ } else {
+ dbg("missing attribute");
+ }
+ break;
+ case '%':
+ strfieldcatmax(string, "%", maxsize);
+ pos++;
+ break;
+ case 'e':
+ next_free_number = find_free_number(udev, string);
+ if (next_free_number > 0) {
+ snprintf(temp2, sizeof(temp2), "%d", next_free_number);
+ strfieldcatmax(string, temp2, maxsize);
+ }
+ break;
+ default:
+ dbg("unknown substitution type '%%%c'", c);
+ break;
+ }
+ /* truncate to specified length */
+ if (len > 0)
+ pos[len] = '\0';
+
+ strfieldcatmax(string, tail, maxsize);
+ }
+}
+
+/*
+ * Note, we can have multiple files for different busses in here due
+ * to the mess that USB has for its device tree...
+ */
+static struct bus_file {
+ char *bus;
+ char *file;
+} bus_files[] = {
+ { .bus = "scsi", .file = "vendor" },
+ { .bus = "usb", .file = "idVendor" },
+ { .bus = "usb", .file = "iInterface" },
+ { .bus = "usb-serial", .file = "detach_state" },
+ { .bus = "ide", .file = "detach_state" },
+ { .bus = "pci", .file = "vendor" },
+ {}
+};
+
+static void wait_for_device_to_initialize(struct sysfs_device *sysfs_device)
+{
+ /* sleep until we see the file for this specific bus type show up this
+ * is needed because we can easily out-run the kernel in looking for
+ * these files before the paticular subsystem has created them in the
+ * sysfs tree properly.
+ *
+ * And people thought that the /sbin/hotplug event system was going to
+ * be slow, poo on you for arguing that before even testing it...
+ */
+ struct bus_file *b = &bus_files[0];
+ struct sysfs_attribute *tmpattr;
+ int found = 0;
+ int loop = WAIT_FOR_FILE_SECONDS * WAIT_FOR_FILE_RETRY_FREQ;
+
+ while (1) {
+ if (b->bus == NULL) {
+ if (!found)