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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 [EMAIL PROTECTED] > 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 [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
