From: Pavel Machek <pavel@ucw.cz>
To: David Howells <dhowells@redhat.com>
Cc: Matthew Wilcox <willy@infradead.org>,
"Theodore Y. Ts'o" <tytso@mit.edu>,
Linus Torvalds <torvalds@linux-foundation.org>,
Al Viro <viro@zeniv.linux.org.uk>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 36/38] vfs: Add a sample program for the new mount API [ver #10]
Date: Tue, 31 Jul 2018 21:39:05 +0200 [thread overview]
Message-ID: <20180731193905.GA28700@amd> (raw)
In-Reply-To: <4951.1533042037@warthog.procyon.org.uk>
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On Tue 2018-07-31 14:00:37, David Howells wrote:
> Pavel Machek <pavel@ucw.cz> wrote:
>
> > Regexes do not work in presence of arbitrary strings in the
> > message. If we had a way to tell start / end of string inserted in the
> > message, yes, the problem would be solved.
>
> You could use quotes around arbitrary insertions, ie. you always do '%s'
> inside the kernel if %s doesn't correspond to a specific set of text
> constants.
Yes, that would work. Except for strings that can contain 's, for
example filenames. \0 could be used to terminate arbitrary
strings.. AFAICT this goes over file descriptors, so length is
available, and we could use \0 to terminate strings.
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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next prev parent reply other threads:[~2018-07-31 21:20 UTC|newest]
Thread overview: 98+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-27 17:31 [PATCH 00/38] VFS: Introduce filesystem context [ver #10] David Howells
2018-07-27 17:31 ` [PATCH 01/38] vfs: syscall: Add open_tree(2) to reference or clone a mount " David Howells
2018-07-27 17:31 ` [PATCH 02/38] vfs: syscall: Add move_mount(2) to move mounts around " David Howells
2018-07-27 17:31 ` [PATCH 03/38] teach move_mount(2) to work with OPEN_TREE_CLONE " David Howells
2018-07-27 17:31 ` [PATCH 04/38] vfs: Suppress MS_* flag defs within the kernel unless explicitly enabled " David Howells
2018-07-27 17:31 ` [PATCH 05/38] vfs: Introduce the basic header for the new mount API's filesystem context " David Howells
2018-07-27 17:32 ` [PATCH 06/38] vfs: Introduce logging functions " David Howells
2018-07-27 17:32 ` [PATCH 07/38] vfs: Add configuration parser helpers " David Howells
2018-07-27 17:32 ` [PATCH 08/38] vfs: Add LSM hooks for the new mount API " David Howells
2018-07-27 17:32 ` [PATCH 09/38] selinux: Implement the new mount API LSM hooks " David Howells
2018-07-27 17:32 ` [PATCH 10/38] smack: Implement filesystem context security " David Howells
2018-07-27 17:32 ` [PATCH 11/38] apparmor: Implement security hooks for the new mount API " David Howells
2018-07-27 17:32 ` [PATCH 12/38] vfs: Pass key and value into LSM and FS and provide a helper parser " David Howells
2018-07-27 17:32 ` [PATCH 13/38] tomoyo: Implement security hooks for the new mount API " David Howells
2018-07-28 2:29 ` Tetsuo Handa
2018-07-30 10:49 ` David Howells
2018-07-27 17:32 ` [PATCH 14/38] vfs: Separate changing mount flags full remount " David Howells
2018-07-27 17:33 ` [PATCH 15/38] vfs: Implement a filesystem superblock creation/configuration context " David Howells
2018-07-27 17:33 ` [PATCH 16/38] vfs: Remove unused code after filesystem context changes " David Howells
2018-07-27 17:33 ` [PATCH 17/38] procfs: Move proc_fill_super() to fs/proc/root.c " David Howells
2018-07-27 17:33 ` [PATCH 18/38] proc: Add fs_context support to procfs " David Howells
2018-07-27 17:33 ` [PATCH 19/38] ipc: Convert mqueue fs to fs_context " David Howells
2018-07-27 17:33 ` [PATCH 20/38] cpuset: Use " David Howells
2018-07-27 17:33 ` [PATCH 21/38] kernfs, sysfs, cgroup, intel_rdt: Support " David Howells
2018-07-27 17:33 ` [PATCH 22/38] hugetlbfs: Convert to " David Howells
2018-07-27 17:33 ` [PATCH 23/38] vfs: Remove kern_mount_data() " David Howells
2018-07-27 17:34 ` [PATCH 24/38] vfs: Provide documentation for new mount API " David Howells
2018-07-27 17:34 ` [PATCH 25/38] Make anon_inodes unconditional " David Howells
2018-07-27 20:04 ` Randy Dunlap
2018-07-30 10:52 ` David Howells
2018-07-27 17:34 ` [PATCH 26/38] vfs: syscall: Add fsopen() to prepare for superblock creation " David Howells
2018-07-27 17:34 ` [PATCH 27/38] vfs: Implement logging through fs_context " David Howells
2018-07-27 17:34 ` [PATCH 28/38] vfs: Add some logging to the core users of the fs_context log " David Howells
2018-07-27 17:34 ` [PATCH 29/38] vfs: syscall: Add fsconfig() for configuring and managing a context " David Howells
2018-07-27 19:42 ` Andy Lutomirski
2018-07-27 21:51 ` David Howells
2018-07-27 21:57 ` Andy Lutomirski
2018-07-27 22:27 ` David Howells
2018-07-27 22:32 ` Jann Horn
2018-07-29 8:50 ` David Howells
2018-07-29 11:14 ` Jann Horn
2018-07-30 12:32 ` David Howells
2018-07-27 17:34 ` [PATCH 30/38] vfs: syscall: Add fsmount() to create a mount for a superblock " David Howells
2018-07-27 19:27 ` Andy Lutomirski
2018-07-27 19:43 ` Andy Lutomirski
2018-07-27 22:09 ` David Howells
2018-07-27 22:06 ` David Howells
2018-07-27 17:34 ` [PATCH 31/38] vfs: syscall: Add fspick() to select a superblock for reconfiguration " David Howells
2018-07-27 17:34 ` [PATCH 32/38] afs: Add fs_context support " David Howells
2018-07-27 17:35 ` [PATCH 33/38] afs: Use fs_context to pass parameters over automount " David Howells
2018-07-27 17:35 ` [PATCH 34/38] vfs: syscall: Add fsinfo() to query filesystem information " David Howells
2018-07-27 19:35 ` Andy Lutomirski
2018-07-27 22:12 ` David Howells
2018-07-27 23:14 ` Jann Horn
2018-07-27 23:49 ` David Howells
2018-07-28 0:14 ` Anton Altaparmakov
2018-07-27 23:51 ` David Howells
2018-07-27 23:58 ` Jann Horn
2018-07-28 0:08 ` David Howells
2018-07-30 14:48 ` David Howells
2018-07-31 4:16 ` Al Viro
2018-07-31 12:39 ` David Howells
2018-07-31 13:20 ` David Howells
2018-07-31 23:49 ` Darrick J. Wong
2018-08-01 1:07 ` David Howells
2018-07-27 17:35 ` [PATCH 35/38] afs: Add fsinfo support " David Howells
2018-07-27 17:35 ` [PATCH 36/38] vfs: Add a sample program for the new mount API " David Howells
2018-07-29 11:37 ` Pavel Machek
2018-07-30 12:23 ` David Howells
2018-07-30 14:31 ` Pavel Machek
2018-07-30 18:08 ` Matthew Wilcox
2018-07-30 18:16 ` Pavel Machek
2018-07-30 18:18 ` Linus Torvalds
2018-07-30 18:38 ` Matthew Wilcox
2018-07-30 18:59 ` Linus Torvalds
2018-07-30 19:49 ` Matthew Wilcox
2018-07-30 21:02 ` Theodore Y. Ts'o
2018-07-30 21:23 ` Pavel Machek
2018-07-30 23:58 ` Matthew Wilcox
2018-07-31 0:58 ` Theodore Y. Ts'o
2018-07-31 9:40 ` Pavel Machek
2018-07-31 10:11 ` David Howells
2018-07-31 11:34 ` Pavel Machek
2018-07-31 12:07 ` Matthew Wilcox
2018-07-31 12:28 ` Pavel Machek
2018-07-31 13:33 ` Al Viro
2018-07-31 13:00 ` David Howells
2018-07-31 19:39 ` Pavel Machek [this message]
2018-07-31 21:00 ` David Howells
2018-07-31 21:21 ` Linus Torvalds
2018-07-31 21:38 ` David Howells
2018-07-30 20:47 ` Pavel Machek
2018-07-30 15:33 ` David Howells
2018-07-30 17:30 ` Pavel Machek
2018-07-30 17:54 ` Linus Torvalds
2018-07-30 18:16 ` Pavel Machek
2018-07-27 17:35 ` [PATCH 37/38] vfs: Allow fsinfo() to query what's in an fs_context " David Howells
2018-07-27 17:35 ` [PATCH 38/38] vfs: Allow fsinfo() to be used to query an fs parameter description " David Howells
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