Checking who is listening on a Unix Domain Socket


 
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Old 06-18-2008
Checking who is listening on a Unix Domain Socket

Hi all,

I'm writing a kernel module and part of it involves controlling IPCs between processes. My problem is when a process tries to connect to a Unix domain socket, the only identifying information of the socket it supplies (that I can see, anyway) is the special pathname of the socket. From the pathname, I need to find out what process is binded/listening on it. Is there an easy way to do this? I would imagine that some data structures and functions in the kernel already would help with this but I just can't find anything helpful. Anyone know how to do this?
 
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pwgrd(1M)																 pwgrd(1M)

NAME
pwgrd - password and group hashing and caching daemon SYNOPSIS
logfile] DESCRIPTION
provides accelerated lookup of password and group information for libc routines like and implements per request type caches and hashtables as appropriate. When the corresponding routine in libc is called, a request is issued to via a Unix domain socket connection. determines whether it can satisfy the request, returning the appropriate results to the requesting process. Options recognizes the following options and command-line arguments: Debug mode. Do not become a daemon. Issue additional diagnostic messages. Instead of logging message via issue messages to stderr. Logfile. In addition to logging via will write log messages to logfile. modifies its behavior depending on whether or not the local machine is using some form of NIS for password or group information. When NIS is being used, the hashtables corresponding to that service are not generated or consulted. Therefore only caching is provided for those requests. AUTHOR
was developed by the Hewlett-Packard Company. FILES
Start up configuration variable. Set to if you want to start on reboot. Hash files, status file and daemon Unix domain socket. Client Unix domain sockets. SEE ALSO
pwgr_stat(1M). pwgrd(1M)