Getting path of a shared object from inside it

[sug]

Hi,

I am running a C program on Unix which loads a shared object of mine.

I need to get the path of my .so from inside it. I want to do this
because from my .so I want to open a text file which is in same
directory as my .so.

getcwd() obviously doesn't serve my purpose because my .so is not in
"cwd" but I am pointing my executable to it using the
LIBPATH/LD_LIBRARY_PATH.

Can somebody provide any pointers? Thanks in advance


Sug

 

[Jean-Claude Arbaut]

Hi,

I am running a C program on Unix which loads a shared object of mine.

I need to get the path of my .so from inside it. I want to do this
because from my .so I want to open a text file which is in same
directory as my .so.

getcwd() obviously doesn't serve my purpose because my .so is not in
"cwd" but I am pointing my executable to it using the
LIBPATH/LD_LIBRARY_PATH.

Can somebody provide any pointers? Thanks in advance


Sug

 

[Jean-Claude Arbaut]

Hi,

I am running a C program on Unix which loads a shared object of mine.

I need to get the path of my .so from inside it. I want to do this
because from my .so I want to open a text file which is in same
directory as my .so.

getcwd() obviously doesn't serve my purpose because my .so is not in
"cwd" but I am pointing my executable to it using the
LIBPATH/LD_LIBRARY_PATH.

Can somebody provide any pointers? Thanks in advance

I think it's implementation dependent. You should have a look at your
dynamic linker documentation. Maybe "man dyld" ?

 

[sug]

Hi Jean,

Thanks. I am not sure but I guess "dyld" is a utility right?
I need to do it from my code, I probably need a function that I can
call from C. Or you were poining at doing system("dyld")?

Thanks, Sug

 

[Jean-Claude Arbaut]

Hi Jean,

Thanks. I am not sure but I guess "dyld" is a utility right?
I need to do it from my code, I probably need a function that I can
call from C. Or you were poining at doing system("dyld")?

Thanks, Sug

No, actually, dyld is the dynamic linker on my platform, I don't know its
name on yours. Basically, it's the program that loads executables and ".so"
files, and it provides functions to access the object "headers", which
provide many important informations. On your platform I suppose there is
something similar.

 

[Jean-Claude Arbaut]

No, actually, dyld is the dynamic linker on my platform, I don't know its
name on yours. Basically, it's the program that loads executables and ".so"
files, and it provides functions to access the object "headers", which
provide many important informations. On your platform I suppose there is
something similar.

To be more explicit: these functions are available in C programs.

 

[Paul Pluzhnikov]

I need to get the path of my .so from inside it.

[Followup-To: comp.unix.aix set since this is OS specific and has
nothing to do with solaris or c.l.c]

Call loadquery(L_GETINFO, ...)
http://publib16.boulder.ibm.com/pseries/en_US/libs/basetrf1/loadquery.htm

Interpreting the result from loadquery() is a bit tricky. You'll
find sample code here:
http://groups-beta.google.com/group/comp.unix.aix/msg/77cb479c1e8440c4

Cheers,

 

[CBFalconer]

To be more explicit: these functions are available in C programs.

And, instead of cluttering up c.l.c with 4 or more off-topic
replies, you could have limited yourself to one setting followups
to a more appropriate newsgroup. The fact that the OP failed to do
so is no excuse.

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