https://github.com/avati/liboindirect

Bypass O_DIRECT open failures
https://github.com/avati/liboindirect

Last synced: 18 days ago
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Bypass O_DIRECT open failures

• Host: GitHub
• URL: https://github.com/avati/liboindirect
• Owner: avati
• Created: 2011-06-22T03:38:14.000Z (over 13 years ago)
• Default Branch: master
• Last Pushed: 2011-07-26T16:55:11.000Z (over 13 years ago)
• Last Synced: 2024-07-31T22:57:05.540Z (3 months ago)
• Language: C
• Homepage:
• Size: 93.8 KB
• Stars: 11
• Watchers: 3
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README

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README

        
i. The Problem

--------------

Certain applications require the underlying filesystem to support open() with

O_DIRECT flag. Certain filesystems do not support open() with O_DIRECT. This

piece of code attempts to bring the two together by loading as a preloadable

shared object in the application, detect failures of open with O_DIRECT, and

re-open them without O_DIRECT (and turn on O_SYNC instead - preserving the

data protection guarantees)

ii. Usage

---------

sh$ git clone git://github.com/avati/liboindirect

sh$ cd liboindirect

sh$ ./autogen.sh

sh$ ./configure

sh$ make all

sh$ su -

sh# cp liboindirect.so /lib

sh# echo /lib/liboindirect.so > /etc/ld.so.preload