Re: [PATCHSET 3/4] sysfs: divorce sysfs from kobject and driver model | KernelTrap

Re: [PATCHSET 3/4] sysfs: divorce sysfs from kobject and driver model

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From: Roland Dreier <rdreier@...>

To: Greg KH <greg@...>

Cc: Cornelia Huck <cornelia.huck@...>, Tejun Heo <htejun@...>, <ebiederm@...>, <stern@...>, <kay.sievers@...>, <linux-kernel@...>

Subject: Re: [PATCHSET 3/4] sysfs: divorce sysfs from kobject and driver model

Date: Tuesday, October 9, 2007 - 7:20 pm

> > - relaying implementation details to userspace so that they cannot be
 > > easily changed. We would need to allow kobjects not showing up in sysfs
 > > and making symlinks a sysfs facility not relying on kobjects to help
 > > there.
 > 
 > Huh?  Why would you want a kobject to not show up in sysfs?

I think the text you replied to explained it perfectly: becase you
don't want internal implementation details to be exposed the userspace
and become an unchangeable part of the kernel/userspace interface.
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Messages in current thread:

[PATCHSET 3/4] sysfs: divorce sysfs from kobject and driver ..., Tejun Heo, (Thu Sep 20, 4:05 am)

Re: [PATCHSET 3/4] sysfs: divorce sysfs from kobject and dri..., Greg KH, (Tue Sep 25, 6:17 pm)

Re: [PATCHSET 3/4] sysfs: divorce sysfs from kobject and dri..., Tejun Heo, (Thu Sep 27, 7:35 am)

Re: [PATCHSET 3/4] sysfs: divorce sysfs from kobject and dri..., Greg KH, (Fri Oct 5, 2:18 am)

Re: [PATCHSET 3/4] sysfs: divorce sysfs from kobject and dri..., Tejun Heo, (Fri Oct 5, 4:00 am)

Re: [PATCHSET 3/4] sysfs: divorce sysfs from kobject and dri..., Greg KH, (Tue Oct 9, 6:48 pm)

Re: [PATCHSET 3/4] sysfs: divorce sysfs from kobject and dri..., Martin Bligh, (Wed Oct 10, 1:24 pm)

Re: [PATCHSET 3/4] sysfs: divorce sysfs from kobject and dri..., Greg KH, (Wed Oct 10, 1:30 pm)

Re: [PATCHSET 3/4] sysfs: divorce sysfs from kobject and dri..., Martin Bligh, (Wed Oct 10, 2:26 pm)

Re: [PATCHSET 3/4] sysfs: divorce sysfs from kobject and dri..., Greg KH, (Wed Oct 10, 2:44 pm)

Re: [PATCHSET 3/4] sysfs: divorce sysfs from kobject and dri..., Alan Stern, (Wed Oct 10, 11:38 am)

Re: [PATCHSET 3/4] sysfs: divorce sysfs from kobject and dri..., Cornelia Huck, (Wed Oct 10, 12:16 pm)

Re: [PATCHSET 3/4] sysfs: divorce sysfs from kobject and dri..., Cornelia Huck, (Tue Oct 9, 5:29 am)

Re: [PATCHSET 3/4] sysfs: divorce sysfs from kobject and dri..., Greg KH, (Tue Oct 9, 6:26 pm)

Re: [PATCHSET 3/4] sysfs: divorce sysfs from kobject and dri..., Cornelia Huck, (Wed Oct 10, 5:05 am)

Re: [PATCHSET 3/4] sysfs: divorce sysfs from kobject and dri..., Roland Dreier, (Tue Oct 9, 7:20 pm)

Re: [PATCHSET 3/4] sysfs: divorce sysfs from kobject and dri..., Greg KH, (Tue Oct 9, 7:28 pm)

Re: [PATCHSET 3/4] sysfs: divorce sysfs from kobject and dri..., Cornelia Huck, (Wed Oct 10, 5:11 am)

Re: [PATCHSET 3/4] sysfs: divorce sysfs from kobject and dri..., Eric W. Biederman, (Thu Sep 27, 3:25 pm)

Re: [PATCHSET 3/4] sysfs: divorce sysfs from kobject and dri..., Greg KH, (Fri Oct 5, 2:23 am)

Re: [PATCHSET 3/4] sysfs: divorce sysfs from kobject and dri..., Eric W. Biederman, (Fri Oct 5, 8:44 am)

Re: [PATCHSET 3/4] sysfs: divorce sysfs from kobject and dri..., Greg KH, (Tue Oct 9, 6:53 pm)

Re: [PATCHSET 3/4] sysfs: divorce sysfs from kobject and dri..., Eric W. Biederman, (Fri Oct 5, 8:12 am)

Re: [PATCHSET 3/4] sysfs: divorce sysfs from kobject and dri..., Greg KH, (Tue Oct 9, 6:51 pm)

Re: [PATCHSET 3/4] sysfs: divorce sysfs from kobject and dri..., Eric W. Biederman, (Wed Oct 10, 9:16 am)

Re: [PATCHSET 3/4] sysfs: divorce sysfs from kobject and dri..., , (Tue Oct 16, 6:18 pm)

Re: [PATCHSET 3/4] sysfs: divorce sysfs from kobject and dri..., Eric W. Biederman, (Tue Oct 16, 7:54 pm)

Re: [PATCHSET 3/4] sysfs: divorce sysfs from kobject and dri..., Greg KH, (Wed Oct 10, 4:44 pm)

Re: [PATCHSET 3/4] sysfs: divorce sysfs from kobject and dri..., Eric W. Biederman, (Wed Oct 10, 5:16 pm)

Re: [Devel] Re: [PATCHSET 3/4] sysfs: divorce sysfs from kob..., Kirill Korotaev, (Fri Oct 5, 9:03 am)

Re: [Devel] Re: [PATCHSET 3/4] sysfs: divorce sysfs from kob..., Eric W. Biederman, (Fri Oct 5, 9:24 am)

Re: [PATCHSET 3/4] sysfs: divorce sysfs from kobject and dri..., Tejun Heo, (Sat Sep 29, 6:06 pm)

[PATCH 13/22] sysfs: implement sysfs_dirent based bin interf..., Tejun Heo, (Thu Sep 20, 4:05 am)

[PATCH 11/22] sysfs: implement sysfs_dirent based file inter..., Tejun Heo, (Thu Sep 20, 4:05 am)

[PATCH 22/22] sysfs: move sysfs_assoc_lock into fs/sysfs/kob..., Tejun Heo, (Thu Sep 20, 4:05 am)

[PATCH 17/22] sysfs: s/sysfs_rename_mutex/sysfs_op_mutex/ an..., Tejun Heo, (Thu Sep 20, 4:05 am)

[PATCH 20/22] sysfs: kill now unused __sysfs_add_file(), Tejun Heo, (Thu Sep 20, 4:05 am)

[PATCH 21/22] sysfs: kill sysfs_hash_and_remove(), Tejun Heo, (Thu Sep 20, 4:05 am)

[PATCH 19/22] sysfs: implement sysfs_dirent based rename - s..., Tejun Heo, (Thu Sep 20, 4:05 am)

[PATCH 16/22] sysfs: convert group implementation to use sd-..., Tejun Heo, (Thu Sep 20, 4:05 am)

[PATCH 15/22] sysfs: implement sysfs_dirent based link inter..., Tejun Heo, (Thu Sep 20, 4:05 am)

[PATCH 18/22] kobject: implement __kobject_set_name(), Tejun Heo, (Thu Sep 20, 4:05 am)

[PATCH 09/22] sysfs: rename internal function sysfs_add_file(), Tejun Heo, (Thu Sep 20, 4:05 am)

[PATCH 05/22] sysfs: implement sysfs_find_child(), Tejun Heo, (Thu Sep 20, 4:05 am)

[PATCH 12/22] sysfs: drop kobj and attr from bin related sym..., Tejun Heo, (Thu Sep 20, 4:05 am)

[PATCH 07/22] sysfs: implement sysfs_dirent based remove int..., Tejun Heo, (Thu Sep 20, 4:05 am)

[PATCH 14/22] sysfs: s/symlink/link/g, Tejun Heo, (Thu Sep 20, 4:05 am)

[PATCH 10/22] sysfs: drop kobj and attr from file related sy..., Tejun Heo, (Thu Sep 20, 4:05 am)

[PATCH 08/22] sysfs: implement sysfs_dirent based directory ..., Tejun Heo, (Thu Sep 20, 4:05 am)

[PATCH 02/22] sysfs: separate out sysfs-kobject.h and fs/sys..., Tejun Heo, (Thu Sep 20, 4:05 am)

[PATCH 06/22] sysfs: restructure addrm helpers, Tejun Heo, (Thu Sep 20, 4:05 am)

[PATCH 01/22] sysfs: make sysfs_root a pointer, Tejun Heo, (Thu Sep 20, 4:05 am)

[PATCH 03/22] sysfs: make sysfs_new_dirent() normalize @mode..., Tejun Heo, (Thu Sep 20, 4:05 am)

[PATCH 04/22] sysfs: make SYSFS_COPY_NAME a flag, Tejun Heo, (Thu Sep 20, 4:05 am)

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