Extracting exported functions out of a shared lib (ubuntu)

Posted by Pingu on Stack Overflow See other posts from Stack Overflow or by Pingu
Published on 2012-11-24T21:39:47Z Indexed on 2012/11/24 23:04 UTC
Read the original article Hit count: 174

Filed under:

shared-libraries

the title already describes my problem.
I found this post, but it didn't completely answers my question.
With the help of it i got this output from nm...

$nm -C -g -D ./libLoggingHandler.so 

000000cc A _DYNAMIC
...
000042e0 T write_str(char*, char const*, int*)
00005a78 T RingBuffer::WriteUnlock()
...
00005918 T TraceLines::GetItemSize()
...
         U SharedMemory::attach(int, void const*, int)
...
00003810 T TraceProfile::FindLineNr(int, int)
...
00002d40 T LoggingHandler::getLogLevel()
...
         U SharedResource::getSharedResourceKey(char const*, int)
...

which are the exported functions? I already found a hint in this post, that the "T" indicates that its getting exported. But if i check the nm manual here, it just says
T - The symbol is in the text (code) section.
My questions is: Does this output give me the information which functions are exported functions (or variables)?
If not, how do i get it?

Greetings, Pingu

Related posts about shared-libraries

Separate log files for each web application and shared libraries with log4j

as seen on Stack Overflow - Search for 'Stack Overflow'
I have few web applications run on the Tomcat server. Each application contains its own log4j library copy inside its own war. This allows for separate, flexible logging configuration per application. I also have few shared libraries (kept in Tomcat's shared libraries directory). I would like to… >>> More
classes and static variables in shared libraries

as seen on Stack Overflow - Search for 'Stack Overflow'
I am trying to write something in c++ with an architecture like: App -- Core (.so) <-- Plugins (.so's) for linux, mac and windows. The Core is implicitly linked to App and Plugins are explicitly linked with dlopen/LoadLibrary to App. The problem I have: static variables in Core are duplicated… >>> More
Packaging a qt application compiled with shared libraries

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi Geeks, I downloaded the qt embedded demo source code recently on my linux machine. Following are the outcomes during running of the program I compiled it statically on my x86 machine and run the application on x86 machine it runs fine. But when i took the statically compiled binary file to other… >>> More
How does symbol binding work for shared libraries in linux

as seen on Stack Overflow - Search for 'Stack Overflow'
When compiling a cpp program with g++ -O0 I noticed that my binary does not contain the symbol for the empty string (basic_string): _S_empty_rep_storage When I do compile this same program with -O2 I notice that the aforementioned symbol is indeed contained within the binary as follows (using nm… >>> More
Linking against multiple shared libraries that all linked against a common static library

as seen on Stack Overflow - Search for 'Stack Overflow'
Say you have 2 share libraries, lib1.so and lib2.so, that both have libcommon.a statically linked into them. Would the compiler complain about ambiguous symbol reference if you were to dynamically link both lib1.so and lib2.so? Or would be the compiler be smart enough to know libcommon symbols are… >>> More

Developer IT