Visit Our UNIX and Linux User Community


Declaring LD_PRELOAD system wide for dynamic loading


 
Thread Tools Search this Thread
Top Forums UNIX for Advanced & Expert Users Declaring LD_PRELOAD system wide for dynamic loading
# 1  
Old 07-24-2009
Declaring LD_PRELOAD system wide for dynamic loading

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

Previous Thread | Next Thread
Test Your Knowledge in Computers #406
Difficulty: Medium
Cygwin was originally developed by Cygnus Solutions, which was later acquired by Microsoft.
True or False?

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

System-wide search

When looking for wherever a program or a filename appears in the system, a short scrip is "findinner" which another script calls with a long parameter list consisting of path names ending with ".sh" or ".menu". "findinner" looks like this: # If not .savenn file, show name and result of grep. #... (4 Replies)
Discussion started by: wbport
4 Replies

2. Red Hat

Changing system-wide for umask

Hi everybody, How can I change the default UMASK for non root users, e.g. I want the umask for every new created user will be 0044. Thanks (6 Replies)
Discussion started by: leo_ultra_leo
6 Replies

3. UNIX for Dummies Questions & Answers

[GPG] System-wide public key?

We need to have many of our users all send encrypted files to a single FTP server. The problem, if I understand how encryption/decryption works (which I don't), is that each user would normally have their own private and public key. The other end needs to be able to decrypt the file(s) using a... (6 Replies)
Discussion started by: Totengraber
6 Replies

4. Linux

System wide find and sort

Hi, I need to look for a config file (ldap.conf) and pick the latest modified file. `locate` tells me there are many ldap.conf's, some in /etc, /usr, /home, etc. Is there some way I can sort them by last modified time via bash? I was thinking maybe I could pipe the output of `locate` to `ls... (4 Replies)
Discussion started by: Housni
4 Replies

5. HP-UX

System wide user thread limit. does that exists :?

Hi all, Is there any system wide limit on number of user threads. I only find nkthread as a tunable parameter,apart from the `per process limit`. (1 Reply)
Discussion started by: Krsh
1 Replies

6. Programming

loading a dynamic library in linux

is there a way to load a dynamic library in linux? I know tht in AIX u can do it using the loadAndInit() function. Please guide me (2 Replies)
Discussion started by: jacques83
2 Replies

7. Shell Programming and Scripting

system wide password change

Hello, I am new to shell scripting and I was trying to write a script that would force a system wide password change except for admins. I am having some trouble and any help that someone could give me would be greatly appreciated. I am trying to do it by using the UID as the marker for anyone... (6 Replies)
Discussion started by: kilemark
6 Replies

8. UNIX for Dummies Questions & Answers

FIND function - system wide

Hi, I have a task to search for a file called 'Xstartup' in the whole system because there might be different versions of it which overrite eachother. Can anyone suggest a smart command to run this search ? The machine needs to scan every single folder beginning from root. Please help, I am... (5 Replies)
Discussion started by: DGoubine
5 Replies

9. UNIX for Advanced & Expert Users

System wide CDE setup

Does anyone know how to make system wide changes to the CDE's front panel icons? I dont know if it matters but im running Solaris 9. THanks (1 Reply)
Discussion started by: meyersp
1 Replies

10. UNIX for Dummies Questions & Answers

links working system wide

I have created symbolic links to several frequently used commands, for example: "lt" is a link to "ls -ltrgo|tail". What can I do to make these links available system-wide, or at least in the directories my coworkers are in most of the time? I have copied the link to several directories, and... (6 Replies)
Discussion started by: jpprial
6 Replies
ncad_addr(4)							   File Formats 						      ncad_addr(4)

NAME
ncad_addr - name of the Solaris Network Cache and Accelerator (NCA) socket utility library SYNOPSIS
/usr/lib/ncad_addr.so DESCRIPTION
ncad_addr.so is the Solaris Network Cache and Accelerator (NCA) socket utility library. Use this library with a web server to avoid support for the PF_NCA family type socket. The web server can take advantage of NCA functionality. Interpose the ncad_addr interfaces before the interfaces in libsocket by setting the environment variable LD_PRELOAD to ncad_addr.so so that it is preloaded before libsocket.so.1. The ncad_addr.so interfaces will be interposed only if NCA is enabled. See ncakmod(1). EXAMPLES
Example 1: Interposing ncad_addr Using Bourne shell syntax as an example, set LD_PRELOAD as shown below to interpose the ncad_addr socket utility libary: LD_PRELOAD=/usr/lib/ncad_addr.so /usr/bin/httpd FILES
/usr/lib/ncad_addr.so ncad_addr socket utility library shared object ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWncar (32-bit) | +-----------------------------+-----------------------------+ | |SUNWncarx (64-bit) | +-----------------------------+-----------------------------+ |Interface Stability |Unstable | +-----------------------------+-----------------------------+ SEE ALSO
nca(1), ncab2clf(1), ncakmod(1), socket(3SOCKET), nca.if(4), ncakmod.conf(4), attributes(5) NOTES
Only applications that use the NCA feature, for example, web servers, should interpose this library. SunOS 5.10 18 Feb 2003 ncad_addr(4)

Featured Tech Videos