diff options
| author | Kay Sievers <kay.sievers@vrfy.org> | 2008-10-02 21:19:00 +0200 |
|---|---|---|
| committer | Kay Sievers <kay.sievers@vrfy.org> | 2008-10-02 21:19:00 +0200 |
| commit | 98f10a9e2ada5d72a0c39b94a5b59d9da4f28753 (patch) | |
| tree | b8494785e7757026e90e6daa0352e36b5cb7d104 /udev/lib | |
| parent | e598c5738c2dc85a3e93c3f68cd88e8eea51215b (diff) | |
libudev: device - add get_parent_with_subsystem()
Diffstat (limited to 'udev/lib')
| -rw-r--r-- | udev/lib/exported_symbols | 1 | ||||
| -rw-r--r-- | udev/lib/libudev-device.c | 16 | ||||
| -rw-r--r-- | udev/lib/libudev.h | 1 |
3 files changed, 18 insertions, 0 deletions
diff --git a/udev/lib/exported_symbols b/udev/lib/exported_symbols index ffd8d66acd..ff7efeaf75 100644 --- a/udev/lib/exported_symbols +++ b/udev/lib/exported_symbols @@ -16,6 +16,7 @@ udev_list_entry_get_value udev_device_new_from_syspath udev_device_new_from_devnum udev_device_get_parent +udev_device_get_parent_with_subsystem udev_device_ref udev_device_unref udev_device_get_udev diff --git a/udev/lib/libudev-device.c b/udev/lib/libudev-device.c index a512537140..8e4360a7f4 100644 --- a/udev/lib/libudev-device.c +++ b/udev/lib/libudev-device.c @@ -404,6 +404,22 @@ struct udev_device *udev_device_get_parent(struct udev_device *udev_device) return udev_device->parent_device; } +struct udev_device *udev_device_get_parent_with_subsystem(struct udev_device *udev_device, const char *subsystem) +{ + struct udev_device *parent; + + parent = udev_device_get_parent(udev_device); + while (parent != NULL) { + const char *parent_subsystem; + + parent_subsystem = udev_device_get_subsystem(parent); + if (parent_subsystem != NULL && strcmp(parent_subsystem, subsystem) == 0) + break; + parent = udev_device_get_parent(parent); + } + return parent; +} + /** * udev_device_get_udev: * @udev_device: udev device diff --git a/udev/lib/libudev.h b/udev/lib/libudev.h index 448346e278..fabe59d7d7 100644 --- a/udev/lib/libudev.h +++ b/udev/lib/libudev.h @@ -60,6 +60,7 @@ struct udev_device; extern struct udev_device *udev_device_new_from_syspath(struct udev *udev, const char *syspath); extern struct udev_device *udev_device_new_from_devnum(struct udev *udev, char type, dev_t devnum); 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_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); |