What does LD_PRELOAD signify? Post: 101801

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LEARN ABOUT CENTOS

ncad_addr

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)