lkml.org 
[lkml]   [2001]   [Sep]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Editing-in-place of a large file
> What's needed is a generalisation of sparse files and truncate().
> They both handle similar problems.

how about

fzero(int fd, off_t off, size_t len)

which zeros the blocks and if it can creates a holey file?

However, that's not what Bob wants, he wants to remove commercials from
recorded TV. So what he wants is

fdelete(int fd, off_t off, size_t len)

which has the semantics of shifting the rest of the file backwards to "off".

The main problem with this is if the off/len are not block aligned. If they
are, then this is just block twiddling, if they aren't, then this is a file
rewrite anyway.
--
---
Larry McVoy lm at bitmover.com http://www.bitmover.com/lm
-
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 13:01    [from the cache]
©2003-2011 Jasper Spaans. Advertise on this site