From 2127f99fb43d2ef950e95329ce40bdd5da8b015c Mon Sep 17 00:00:00 2001
From: Dave Reisner <dreisner@archlinux.org>
Date: Fri, 25 May 2012 19:43:24 -0400
Subject: [PATCH] Reinstate TIMEOUT= handling

This is mostly to deal with ipw2?00 drivers which have yet to be fixed
in the kernel.
---
 src/libudev/libudev-device.c  |   19 +++++++++++++++++++
 src/libudev/libudev-private.h |    1 +
 src/udev/udevd.c              |   13 ++++++++++---
 3 files changed, 30 insertions(+), 3 deletions(-)

diff --git a/src/libudev/libudev-device.c b/src/libudev/libudev-device.c
index a8277d1..5966189 100644
--- a/src/libudev/libudev-device.c
+++ b/src/libudev/libudev-device.c
@@ -68,6 +68,7 @@ struct udev_device {
         struct udev_list tags_list;
         unsigned long long int seqnum;
         unsigned long long int usec_initialized;
+        int timeout;
         int devlink_priority;
         int refcount;
         dev_t devnum;
@@ -89,6 +90,21 @@ struct udev_device {
         bool db_persist;
 };

+int udev_device_get_timeout(struct udev_device *udev_device)
+{
+        return udev_device->timeout;
+}
+
+static int udev_device_set_timeout(struct udev_device *udev_device, int timeout)
+{
+        char num[32];
+
+        udev_device->timeout = timeout;
+        snprintf(num, sizeof(num), "%u", timeout);
+        udev_device_add_property(udev_device, "TIMEOUT", num);
+        return 0;
+}
+
 /**
  * udev_device_get_seqnum:
  * @udev_device: udev device
@@ -362,6 +378,8 @@ void udev_device_add_property_from_string_parse(struct udev_device *udev_device,

                 util_strscpyl(path, sizeof(path), TEST_PREFIX "/sys", &property[8], NULL);
                 udev_device_set_syspath(udev_device, path);
+        } else if (strncmp(property, "TIMEOUT=", 8) == 0) {
+                udev_device_set_timeout(udev_device, strtoull(&property[8], NULL, 10));
         } else if (startswith(property, "SUBSYSTEM=")) {
                 udev_device_set_subsystem(udev_device, &property[10]);
         } else if (startswith(property, "DEVTYPE=")) {
@@ -605,6 +623,7 @@ struct udev_device *udev_device_new(struct udev *udev)
         udev_list_init(udev, &udev_device->sysattr_value_list, true);
         udev_list_init(udev, &udev_device->sysattr_list, false);
         udev_list_init(udev, &udev_device->tags_list, true);
+        udev_device->timeout = -1;
         udev_device->watch_handle = -1;
         /* copy global properties */
         udev_list_entry_foreach(list_entry, udev_get_properties_list_entry(udev))
diff --git a/src/libudev/libudev-private.h b/src/libudev/libudev-private.h
index 4eb4a59..99aefeb 100644
--- a/src/libudev/libudev-private.h
+++ b/src/libudev/libudev-private.h
@@ -70,6 +70,7 @@ const char *udev_device_get_id_filename(struct udev_device *udev_device);
 void udev_device_set_is_initialized(struct udev_device *udev_device);
 int udev_device_add_tag(struct udev_device *udev_device, const char *tag);
 void udev_device_cleanup_tags_list(struct udev_device *udev_device);
+int udev_device_get_timeout(struct udev_device *udev_device);
 unsigned long long udev_device_get_usec_initialized(struct udev_device *udev_device);
 void udev_device_set_usec_initialized(struct udev_device *udev_device, unsigned long long usec_initialized);
 int udev_device_get_devlink_priority(struct udev_device *udev_device);
diff --git a/src/udev/udevd.c b/src/udev/udevd.c
index 0d85960..cd24462 100644
--- a/src/udev/udevd.c
+++ b/src/udev/udevd.c
@@ -384,7 +384,7 @@ out:
         }
 }

-static void event_run(struct event *event)
+static void event_run(struct event *event, bool force)
 {
         struct udev_list_node *loop;

@@ -410,7 +410,7 @@ static void event_run(struct event *event)
                 return;
         }

-        if (children >= children_max) {
+        if (!force && children >= children_max) {
                 if (children_max > 1)
                         log_debug("maximum number (%i) of children reached\n", children);
                 return;
@@ -444,6 +444,13 @@ static int event_queue_insert(struct udev_device *dev)

         event->state = EVENT_QUEUED;
         udev_list_node_append(&event->node, &event_list);
+
+        /* run all events with a timeout set immediately */
+        if (udev_device_get_timeout(dev) > 0) {
+                event_run(event, true);
+                return 0;
+        }
+
         return 0;
 }

@@ -549,7 +556,7 @@ static void event_queue_start(struct udev *udev)
                 if (is_devpath_busy(event))
                         continue;

-                event_run(event);
+                event_run(event, false);
         }
 }

--
1.7.10.2