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Operating Systems Solaris How to see actual filename that File Descriptor is pointing to for a given processID? Post 302479416 by DGPickett on Friday 10th of December 2010 03:26:49 PM
Old 12-10-2010
The files under /proc are imaginary, but the flat files have names that disclose their inode and device. If you cannot "find" a path name (there may be several links), then there are no links, which is to say it has been removed but is still open on one or more processes. For instance, tmpfile() does this so if your proc crashes, the file space is released. Then, your only clue to the original path is the inode contents or the fd # implying an order of opening.
 

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PLDD(1) 							 Linux User Manual							   PLDD(1)

NAME
pldd - display dynamic shared objects linked into a process SYNOPSIS
pldd PID pldd OPTION DESCRIPTION
The pldd command displays a list of the dynamic shared objects that are linked into the process with the specified process ID. The list includes the libraries that have been dynamically loaded using dlopen(3). OPTIONS
-?, --help Display program help message. --usage Display a short usage message. -V, --version Display the program version. VERSIONS
pldd is available since glibc 2.15. CONFORMING TO
The pldd command is not specified by POSIX.1. Some other systems have a similar command. EXIT STATUS
On success, pldd exits with the status 0. If the specified process does not exist, the user does not have permission to access its dynamic shared object list, or no command-line arguments are supplied, pldd exists with a status of 1. If given an invalid option, it exits with the status 64. EXAMPLE
$ echo $$ # Display PID of shell 1143 $ pldd $$ # Display DSOs linked into the shell 1143: /usr/bin/bash linux-vdso.so.1 /lib64/libtinfo.so.5 /lib64/libdl.so.2 /lib64/libc.so.6 /lib64/ld-linux-x86-64.so.2 /lib64/libnss_files.so.2 NOTES
The command lsof -p PID also shows output that includes the dynamic shared objects that are linked into a process. SEE ALSO
ldd(1), lsof(1), dlopen(3), ld.so(8) GNU
2014-09-27 PLDD(1)
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