libudev: device - add get_envp() to construct envp from property list

[elogind.git] / udev / lib / libudev-device.c

diff --git a/udev/lib/libudev-device.c b/udev/lib/libudev-device.c
index 2f685bd8e893849d1b93c48f1c5e16476d41ff23..c76be21e8288a408484b58e70a3a3de76842043f 100644 (file)
--- a/udev/lib/libudev-device.c
+++ b/udev/lib/libudev-device.c
@@ -43,13 +43,15 @@ struct udev_device {
        char *subsystem;
        struct udev_list_node devlinks_list;
        struct udev_list_node properties_list;
+       char *envp[128];
+       int envp_uptodate;
+       char *driver;
+       dev_t devnum;
        char *action;
        int event_timeout;
-       char *driver;
        char *devpath_old;
        char *physdevpath;
        int timeout;
-       dev_t devnum;
        unsigned long long int seqnum;
        int num_fake_partitions;
        int devlink_priority;
@@ -238,6 +240,7 @@ struct udev_device *device_new(struct udev *udev)
        udev_list_init(&udev_device->devlinks_list);
        udev_list_init(&udev_device->properties_list);
        udev_list_init(&udev_device->attr_list);
+       udev_device->event_timeout = -1;
        info(udev_device->udev, "udev_device: %p created\n", udev_device);
        return udev_device;
 }
@@ -578,6 +581,8 @@ struct udev_device *udev_device_ref(struct udev_device *udev_device)
  **/
 void udev_device_unref(struct udev_device *udev_device)
 {
+       unsigned int i;
+
        if (udev_device == NULL)
                return;
        udev_device->refcount--;
@@ -596,6 +601,8 @@ void udev_device_unref(struct udev_device *udev_device)
        free(udev_device->devpath_old);
        free(udev_device->physdevpath);
        udev_list_cleanup(udev_device->udev, &udev_device->attr_list);
+       for (i = 0; i < ARRAY_SIZE(udev_device->envp) && udev_device->envp[i] != NULL; i++)
+               free(udev_device->envp[i]);
        info(udev_device->udev, "udev_device: %p released\n", udev_device);
        free(udev_device);
 }
@@ -728,6 +735,11 @@ struct udev_list_entry *udev_device_get_devlinks_list_entry(struct udev_device *
        return udev_list_get_entry(&udev_device->devlinks_list);
 }
 
+void udev_device_cleanup_devlinks_list(struct udev_device *udev_device)
+{
+       udev_list_cleanup(udev_device->udev, &udev_device->devlinks_list);
+}
+
 /**
  * udev_device_get_properties_list_entry:
  * @udev_device: udev device
@@ -905,6 +917,7 @@ int udev_device_set_syspath(struct udev_device *udev_device, const char *syspath
 
 int udev_device_set_subsystem(struct udev_device *udev_device, const char *subsystem)
 {
+       free(udev_device->subsystem);
        udev_device->subsystem = strdup(subsystem);
        if (udev_device->subsystem == NULL)
                return -ENOMEM;
@@ -918,7 +931,7 @@ int udev_device_set_devnode(struct udev_device *udev_device, const char *devnode
        udev_device->devnode = strdup(devnode);
        if (udev_device->devnode == NULL)
                return -ENOMEM;
-       udev_device_add_property(udev_device, "DEVNODE", udev_device->devnode);
+       udev_device_add_property(udev_device, "DEVNAME", udev_device->devnode);
        return 0;
 }
 
@@ -941,6 +954,7 @@ int udev_device_add_devlink(struct udev_device *udev_device, const char *devlink
 
 struct udev_list_entry *udev_device_add_property(struct udev_device *udev_device, const char *key, const char *value)
 {
+       udev_device->envp_uptodate = 0;
        return udev_list_entry_add(udev_device->udev, &udev_device->properties_list, key, value, 1, 0);
 }
 
@@ -960,6 +974,29 @@ struct udev_list_entry *udev_device_add_property_from_string(struct udev_device
        return udev_device_add_property(udev_device, name, val);
 }
 
+char **udev_device_get_properties_envp(struct udev_device *udev_device)
+{
+       if (!udev_device->envp_uptodate) {
+               unsigned int i;
+               struct udev_list_entry *list_entry;
+
+               for (i = 0; i < ARRAY_SIZE(udev_device->envp) && udev_device->envp[i] != NULL; i++)
+                       free(udev_device->envp[i]);
+               i = 0;
+               udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(udev_device)) {
+                       asprintf(&udev_device->envp[i++], "%s=%s",
+                                udev_list_entry_get_name(list_entry),
+                                udev_list_entry_get_value(list_entry));
+                       if (i+1 >= ARRAY_SIZE(udev_device->envp))
+                               break;
+               }
+               udev_device->envp[i] = NULL;
+               info(udev_device->udev, "constructed envp from %u properties\n", i);
+               udev_device->envp_uptodate = 1;
+       }
+       return udev_device->envp;
+}
+
 int udev_device_set_action(struct udev_device *udev_device, const char *action)
 {
        free(udev_device->action);
@@ -972,6 +1009,7 @@ int udev_device_set_action(struct udev_device *udev_device, const char *action)
 
 int udev_device_set_driver(struct udev_device *udev_device, const char *driver)
 {
+       free(udev_device->driver);
        udev_device->driver = strdup(driver);
        if (udev_device->driver == NULL)
                return -ENOMEM;