lkml.org 
[lkml]   [2005]   [Jan]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: /proc/<pid>/maps API addition - seek to address
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1



Jeremy Fitzhardinge wrote:
> It would be terribly useful to have some way of
> lseeking /proc/<pid>/maps to the entry of a particular address. So, if
> you want to find the information about a mapping containing address
> 0x12345678, it would set the file position to (say) the entry of
> 0x12000000-0x20000000.
>
> I haven't looked at how /proc/<pid>/maps is implemented these days; is
> this outright hard, or relatively straightforward? This wouldn't be
> very useful if it had to actually generate all the output up to the
> desired point, but it would be a boon if it could short-circuit that. I
> guess the interactions with normal lseek might be tricky (but perhaps
> that could be put off until you actually use lseek, if ever).
>

I'm fairly certain you can just return that the seek is done, and set
flags for the file descriptor, then on read() have it return the data
you want it to.


> Alternatively, any other API for finding the properties of page X would
> be useful, but this seemed like a nice incremental extension of the
> existing interface.
>
> J
>
> -
> 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/
>

- --
All content of all messages exchanged herein are left in the
Public Domain, unless otherwise explicitly stated.

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.0 (GNU/Linux)
Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org

iD8DBQFB600dhDd4aOud5P8RAlvoAJsFi6ZUMTVhqQBWqZFkv8ubeJEyegCfYhhl
6Gy3TLn/ngSQDugT0CxOpnY=
=rR0f
-----END PGP SIGNATURE-----
-
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/

\
 
 \ /
  Last update: 2005-03-22 14:09    [W:0.061 / U:0.128 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site