Obtain filename from file pointer in C

c filenames file-pointer
Gaara picture Gaara · Mar 30, 2012 · Viewed 15.1k times · Source

Possible Duplicate:
Getting Filename from file descriptor in C
How get fileName having FILE*?

Is there any way where I can find the file_name from a file-pointer in C?

fp = fopen(file,"r");

From fp, is it possible to get the file name which I have opened?

Answer

Joshua Glazer picture Joshua Glazer · Mar 30, 2012

I believe not, because a file* could be to something that doesn't even have a name. There might be a platform dependent way, depending I. Your system, so if you don't care about portability, try looking at your compiler's definition of FILE if it has one. Odds are that your only way is to save the name when it's opened.

There are some other potentially hacky ways as well- check this link:

http://bytes.com/topic/c/answers/218921-how-get-filename-file-pointer

Cheers!

Related questions

.c vs .cc vs. .cpp vs .hpp vs .h vs .cxx

Possible Duplicates: *.h or *.hpp for your class definitions Correct C++ code file extension? .cc vs .cpp I used to think that it used to be that: .h files are header files for C and C++, and usually only contain …

Read More
How do I determine the size of my array in C?

How do I determine the size of my array in C? That is, the number of elements the array can hold?

Read More
How to initialize all members of an array to the same value?

I have a large array in C (not C++ if that makes a difference). I want to initialize all members of the same value. I could swear I once knew a simple way to do this. I could use memset() …

Read More