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Declaring LD_PRELOAD system wide for dynamic loading

Jul 24, 2009  By mzeeshanbhatti
 in

Dear Fellows;

As being new to linux, i have tried to synamically load a custom library which overrides some system calls like conncet(), socket() etc.... for custom purposes.

It works well, if declaring the environment path LD_PRELOAD and execution of the application to be override are in the same script of perhaps same path as well.

Inshort i am un able to declare the path for dynamic library through LD_PRELOAD system wide, i have tried different ways like saving the LD_PRELOAD path in profile of linux core 9 but it gives error like ..

Unable to load the LD_PRELOAD=./path ...... etc

I would appreciate a concise and swift help, thanking in anticipation.

Regards,

-zeeshan

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/etc/profile

Mitch Frazier's picture
Submitted by Mitch Frazier on Fri, 07/24/2009 - 10:17.

Although you say:

saving the LD_PRELOAD path in profile of linux core 9

it's not really clear what you mean by that... so, have you tried adding it to /etc/profile, someting like: 

export LD_PRELOAD=/my/path/to/hack.so

Mitch Frazier is an Associate Editor for Linux Journal.

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