Messages in this thread Patch in this message | | | Subject | [take37 9/10] kevent: Private userspace notifications. | Date | Thu, 22 Feb 2007 16:55:05 +0300 | From | Evgeniy Polyakov <> |
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Private userspace notifications.
Allows to register notifications of any private userspace events over kevent. Events can be marked as ready using kevent_ctl(KEVENT_READY) command.
Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
diff --git a/kernel/kevent/kevent_unotify.c b/kernel/kevent/kevent_unotify.c new file mode 100644 index 0000000..618c09c --- /dev/null +++ b/kernel/kevent/kevent_unotify.c @@ -0,0 +1,62 @@ +/* + * 2006 Copyright (c) Evgeniy Polyakov <johnpol@2ka.mipt.ru> + * All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <linux/kernel.h> +#include <linux/kevent.h> + +static int kevent_unotify_callback(struct kevent *k) +{ + return 1; +} + +int kevent_unotify_enqueue(struct kevent *k) +{ + int err; + + err = kevent_storage_enqueue(&k->user->st, k); + if (err) + goto err_out_exit; + + if (k->event.req_flags & KEVENT_REQ_ALWAYS_QUEUE) + kevent_requeue(k); + + return 0; + +err_out_exit: + return err; +} + +int kevent_unotify_dequeue(struct kevent *k) +{ + kevent_storage_dequeue(k->st, k); + return 0; +} + +static int __init kevent_init_unotify(void) +{ + struct kevent_callbacks sc = { + .callback = &kevent_unotify_callback, + .enqueue = &kevent_unotify_enqueue, + .dequeue = &kevent_unotify_dequeue, + .flags = 0, + }; + + return kevent_add_callbacks(&sc, KEVENT_UNOTIFY); +} +module_init(kevent_init_unotify); - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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