X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=kernel%2Fksysfs.c;fp=kernel%2Fksysfs.c;h=f119e098e67b1758c3ceffdb095cfdcc40232b2c;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=1f064a63f8cfe7b7f575b82c38315bf5e79f2344;hpb=cee37fe97739d85991964371c1f3a745c00dd236;p=linux-2.6.git

diff --git a/kernel/ksysfs.c b/kernel/ksysfs.c
index 1f064a63f..f119e098e 100644
--- a/kernel/ksysfs.c
+++ b/kernel/ksysfs.c
@@ -22,20 +22,39 @@ static struct subsys_attribute _name##_attr = __ATTR_RO(_name)
 static struct subsys_attribute _name##_attr = \
 	__ATTR(_name, 0644, _name##_show, _name##_store)
 
-#ifdef CONFIG_HOTPLUG
-static ssize_t hotplug_seqnum_show(struct subsystem *subsys, char *page)
+#if defined(CONFIG_HOTPLUG) && defined(CONFIG_NET)
+/* current uevent sequence number */
+static ssize_t uevent_seqnum_show(struct subsystem *subsys, char *page)
 {
-	return sprintf(page, "%llu\n", (unsigned long long)hotplug_seqnum);
+	return sprintf(page, "%llu\n", (unsigned long long)uevent_seqnum);
 }
-KERNEL_ATTR_RO(hotplug_seqnum);
+KERNEL_ATTR_RO(uevent_seqnum);
+
+/* uevent helper program, used during early boo */
+static ssize_t uevent_helper_show(struct subsystem *subsys, char *page)
+{
+	return sprintf(page, "%s\n", uevent_helper);
+}
+static ssize_t uevent_helper_store(struct subsystem *subsys, const char *page, size_t count)
+{
+	if (count+1 > UEVENT_HELPER_PATH_LEN)
+		return -ENOENT;
+	memcpy(uevent_helper, page, count);
+	uevent_helper[count] = '\0';
+	if (count && uevent_helper[count-1] == '\n')
+		uevent_helper[count-1] = '\0';
+	return count;
+}
+KERNEL_ATTR_RW(uevent_helper);
 #endif
 
 decl_subsys(kernel, NULL, NULL);
 EXPORT_SYMBOL_GPL(kernel_subsys);
 
 static struct attribute * kernel_attrs[] = {
-#ifdef CONFIG_HOTPLUG
-	&hotplug_seqnum_attr.attr,
+#if defined(CONFIG_HOTPLUG) && defined(CONFIG_NET)
+	&uevent_seqnum_attr.attr,
+	&uevent_helper_attr.attr,
 #endif
 	NULL
 };