libudev: device - add devtype support

diff --git a/udev/lib/exported_symbols b/udev/lib/exported_symbols
index a2f0ca7cb3ac765d8fb5509fcd6e7b2fdfa5c462..6b07842a8145d7d7c4d67699381537739baf476c 100644 (file)
--- a/udev/lib/exported_symbols
+++ b/udev/lib/exported_symbols
@@ -17,6 +17,7 @@ udev_device_new_from_devnum
 udev_device_new_from_subsystem_sysname
 udev_device_get_parent
 udev_device_get_parent_with_subsystem
+udev_device_get_parent_with_devtype
 udev_device_ref
 udev_device_unref
 udev_device_get_udev
@@ -26,6 +27,7 @@ udev_device_get_devnode
 udev_device_get_sysname
 udev_device_get_sysnum
 udev_device_get_subsystem
+udev_device_get_devtype
 udev_device_get_devlinks_list_entry
 udev_device_get_properties_list_entry
 udev_device_get_action

diff --git a/udev/lib/libudev-device.c b/udev/lib/libudev-device.c
index 055263bbef750232c22d48ff1b535f19ec634448..06227be328c0851a121c7b08463903aba18158d0 100644 (file)
--- a/udev/lib/libudev-device.c
+++ b/udev/lib/libudev-device.c
@@ -40,6 +40,7 @@ struct udev_device {
        const char *sysnum;
        char *devnode;
        char *subsystem;
+       char *devtype;
        char *driver;
        char *action;
        char *devpath_old;
@@ -59,6 +60,7 @@ struct udev_device {
        dev_t devnum;
        unsigned int parent_set:1;
        unsigned int subsystem_set:1;
+       unsigned int devtype_set:1;
        unsigned int devlinks_uptodate:1;
        unsigned int envp_uptodate:1;
        unsigned int driver_set:1;
@@ -204,7 +206,9 @@ int udev_device_read_uevent_file(struct udev_device *udev_device)
                        continue;
                pos[0] = '\0';
 
-               if (strncmp(line, "MAJOR=", 6) == 0)
+               if (strncmp(line, "DEVTYPE=", 8) == 0)
+                       udev_device_set_devtype(udev_device, &line[8]);
+               else if (strncmp(line, "MAJOR=", 6) == 0)
                        maj = strtoull(&line[6], NULL, 10);
                else if (strncmp(line, "MINOR=", 6) == 0)
                        min = strtoull(&line[6], NULL, 10);
@@ -553,6 +557,22 @@ struct udev_device *udev_device_get_parent_with_subsystem(struct udev_device *ud
        return parent;
 }
 
+struct udev_device *udev_device_get_parent_with_devtype(struct udev_device *udev_device, const char *devtype)
+{
+       struct udev_device *parent;
+
+       parent = udev_device_get_parent(udev_device);
+       while (parent != NULL) {
+               const char *parent_devtype;
+
+               parent_devtype = udev_device_get_devtype(parent);
+               if (parent_devtype != NULL && strcmp(parent_devtype, devtype) == 0)
+                       break;
+               parent = udev_device_get_parent(parent);
+       }
+       return parent;
+}
+
 /**
  * udev_device_get_udev:
  * @udev_device: udev device
@@ -605,6 +625,7 @@ void udev_device_unref(struct udev_device *udev_device)
        free(udev_device->sysname);
        free(udev_device->devnode);
        free(udev_device->subsystem);
+       free(udev_device->devtype);
        udev_list_cleanup_entries(udev_device->udev, &udev_device->devlinks_list);
        udev_list_cleanup_entries(udev_device->udev, &udev_device->properties_list);
        free(udev_device->action);
@@ -723,6 +744,25 @@ const char *udev_device_get_subsystem(struct udev_device *udev_device)
        return udev_device->subsystem;
 }
 
+/**
+ * udev_device_get_devtype:
+ * @udev_device: udev device
+ *
+ * Retrieve the devtype string of the udev device.
+ *
+ * Returns: the devtype name of the udev device, or #NULL if it can not be determined
+ **/
+const char *udev_device_get_devtype(struct udev_device *udev_device)
+{
+       if (udev_device == NULL)
+               return NULL;
+       if (!udev_device->devtype_set) {
+               udev_device->devtype_set = 1;
+               udev_device_read_uevent_file(udev_device);
+       }
+       return udev_device->devtype;
+}
+
 /**
  * udev_device_get_devlinks_list_entry:
  * @udev_device: udev device
@@ -963,6 +1003,17 @@ int udev_device_set_subsystem(struct udev_device *udev_device, const char *subsy
        return 0;
 }
 
+int udev_device_set_devtype(struct udev_device *udev_device, const char *devtype)
+{
+       free(udev_device->devtype);
+       udev_device->devtype = strdup(devtype);
+       if (udev_device->devtype == NULL)
+               return -ENOMEM;
+       udev_device->devtype_set = 1;
+       udev_device_add_property(udev_device, "DEVTYPE", udev_device->devtype);
+       return 0;
+}
+
 int udev_device_set_devnode(struct udev_device *udev_device, const char *devnode)
 {
        free(udev_device->devnode);

diff --git a/udev/lib/libudev-monitor.c b/udev/lib/libudev-monitor.c
index 502fe24ce1586095731bad23691cf6049a293a4d..e4cb80769cff4e86a792efe2a2c84d84169ccd1a 100644 (file)
--- a/udev/lib/libudev-monitor.c
+++ b/udev/lib/libudev-monitor.c
@@ -325,6 +325,8 @@ struct udev_device *udev_monitor_receive_device(struct udev_monitor *udev_monito
                } else if (strncmp(key, "SUBSYSTEM=", 10) == 0) {
                        udev_device_set_subsystem(udev_device, &key[10]);
                        subsystem_set = 1;
+               } else if (strncmp(key, "DEVTYPE=", 8) == 0) {
+                       udev_device_set_devtype(udev_device, &key[8]);
                } else if (strncmp(key, "DEVNAME=", 8) == 0) {
                        udev_device_set_devnode(udev_device, &key[8]);
                } else if (strncmp(key, "DEVLINKS=", 9) == 0) {

diff --git a/udev/lib/libudev-private.h b/udev/lib/libudev-private.h
index 5e09188f084ad2d8f3816e1820244adb041ba411..0d752bb1e5fb8847a21bc695e8b42112ad6a0707 100644 (file)
--- a/udev/lib/libudev-private.h
+++ b/udev/lib/libudev-private.h
@@ -56,6 +56,7 @@ extern struct udev_list_entry *udev_get_properties_list_entry(struct udev *udev)
 /* libudev-device */
 extern int udev_device_set_syspath(struct udev_device *udev_device, const char *syspath);
 extern int udev_device_set_subsystem(struct udev_device *udev_device, const char *subsystem);
+extern int udev_device_set_devtype(struct udev_device *udev_device, const char *devtype);
 extern int udev_device_set_devnode(struct udev_device *udev_device, const char *devnode);
 extern int udev_device_add_devlink(struct udev_device *udev_device, const char *devlink);
 extern void udev_device_cleanup_devlinks_list(struct udev_device *udev_device);

diff --git a/udev/lib/libudev.h b/udev/lib/libudev.h
index a9e399c4b44fa408bcc076cf8d153e5e41431219..b96e49429b9d71a48930fe65e841c49ac05ba2a2 100644 (file)
--- a/udev/lib/libudev.h
+++ b/udev/lib/libudev.h
@@ -63,11 +63,13 @@ extern struct udev_device *udev_device_new_from_devnum(struct udev *udev, char t
 extern struct udev_device *udev_device_new_from_subsystem_sysname(struct udev *udev, const char *subsystem, const char *sysname);
 extern struct udev_device *udev_device_get_parent(struct udev_device *udev_device);
 extern struct udev_device *udev_device_get_parent_with_subsystem(struct udev_device *udev_device, const char *subsystem);
+extern struct udev_device *udev_device_get_parent_with_devtype(struct udev_device *udev_device, const char *devtype);
 extern struct udev_device *udev_device_ref(struct udev_device *udev_device);
 extern void udev_device_unref(struct udev_device *udev_device);
 extern struct udev *udev_device_get_udev(struct udev_device *udev_device);
 extern const char *udev_device_get_devpath(struct udev_device *udev_device);
 extern const char *udev_device_get_subsystem(struct udev_device *udev_device);
+extern const char *udev_device_get_devtype(struct udev_device *udev_device);
 extern const char *udev_device_get_syspath(struct udev_device *udev_device);
 extern const char *udev_device_get_sysname(struct udev_device *udev_device);
 extern const char *udev_device_get_sysnum(struct udev_device *udev_device);

diff --git a/udev/lib/test-libudev.c b/udev/lib/test-libudev.c
index 512062652075a818c83c45e3bc1c9de456b077d8..fd12bd9344ccbc9c0b576452aa4b0e1250a8a86b 100644 (file)
--- a/udev/lib/test-libudev.c
+++ b/udev/lib/test-libudev.c
@@ -67,6 +67,10 @@ static void print_device(struct udev_device *device)
        if (str != NULL)
                printf("subsystem: '%s'\n", str);
 
+       str = udev_device_get_devtype(device);
+       if (str != NULL)
+               printf("devtype:   '%s'\n", str);
+
        str = udev_device_get_driver(device);
        if (str != NULL)
                printf("driver:    '%s'\n", str);