linux-kernel - Re: [patch 7/7] fs, notify: Add procfs fdinfo helper v6

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <50A4F340.9080201@parallels.com>
Date:	Thu, 15 Nov 2012 17:50:56 +0400
From:	Pavel Emelyanov <xemul@...allels.com>
To:	Cyrill Gorcunov <gorcunov@...nvz.org>,
	Al Viro <viro@...iv.linux.org.uk>,
	Andrew Morton <akpm@...ux-foundation.org>
CC:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	Alexey Dobriyan <adobriyan@...il.com>,
	James Bottomley <jbottomley@...allels.com>,
	Matthew Helsley <matt.helsley@...il.com>,
	aneesh.kumar@...ux.vnet.ibm.com, bfields@...ldses.org,
	oleg@...hat.com, rientjes@...gle.com, tvrtko.ursulin@...lan.co.uk,
	Andrey Vagin <avagin@...nvz.org>
Subject: Re: [patch 7/7] fs, notify: Add procfs fdinfo helper v6

> This allow us to print out fsnotify details such as
> watchee inode, device, mask and optionally a file handle.
> 
> For inotify objects if kernel compiled with exportfs support
> the output will be
> 
>  | pos:	0
>  | flags:	02000000
>  | inotify wd:        3 ino:             9e7e sdev:   800013 mask:  800afce ignored_mask:        0 fhandle-bytes:        8 fhandle-type:        1 f_handle: 7e9e0000640d1b6d
>  | inotify wd:        2 ino:             a111 sdev:   800013 mask:  800afce ignored_mask:        0 fhandle-bytes:        8 fhandle-type:        1 f_handle: 11a1000020542153
>  | inotify wd:        1 ino:            6b149 sdev:   800013 mask:  800afce ignored_mask:        0 fhandle-bytes:        8 fhandle-type:        1 f_handle: 49b1060023552153
> 
> If kernel compiled without exportfs support, the file handle
> won't be provided but inode and device only.
> 
>  | pos:	0
>  | flags:	02000000
>  | inotify wd:        3 ino:             9e7e sdev:   800013 mask:  800afce ignored_mask:        0
>  | inotify wd:        2 ino:             a111 sdev:   800013 mask:  800afce ignored_mask:        0
>  | inotify wd:        1 ino:            6b149 sdev:   800013 mask:  800afce ignored_mask:        0
> 
> For fanotify the output is like
> 
>  | pos:	0
>  | flags:	02
>  | fanotify ino:            68f71 sdev:   800013 mask:        1 ignored_mask: 40000000
>  | fanotify mnt_id:       13 mask:        1 ignored_mask: 40000000
> 
> To minimize impact on general fsnotify code the new functionality
> is gathered in fs/notify/fdinfo.c file.
> 
> Signed-off-by: Cyrill Gorcunov <gorcunov@...nvz.org>
> CC: Pavel Emelyanov <xemul@...allels.com>
> CC: Oleg Nesterov <oleg@...hat.com>
> CC: Andrey Vagin <avagin@...nvz.org>
> CC: Al Viro <viro@...IV.linux.org.uk>
> CC: Alexey Dobriyan <adobriyan@...il.com>
> CC: Andrew Morton <akpm@...ux-foundation.org>
> CC: James Bottomley <jbottomley@...allels.com>
> CC: "Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
> CC: Alexey Dobriyan <adobriyan@...il.com>
> CC: Matthew Helsley <matt.helsley@...il.com>
> CC: "J. Bruce Fields" <bfields@...ldses.org>
> CC: "Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
> CC: Tvrtko Ursulin <tvrtko.ursulin@...lan.co.uk>

Acked-by: Pavel Emelyanov <xemul@...allels.com>
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/