How do I check if an object file is in COFF or ELF format from within C?

c linux elf coff

Read the first four bytes. If they are equal to \x7fELF, it's an ELF file. Otherwise, you should parse it as COFF and see if it makes sense. (Note that COFF magic is a lot more complicated; I get no less than 42 magic entries in /usr/share/file/magic for it).

c linux elf coff

Check the magic number. The ELF magic number is 0x7f454C46 (0x7f + "ELF") and COFF's is 0x14c. Take care about this anyway because there are different magic numbers for COFF.

Watch out about endianness when reading these values.

c linux elf coff

Try the command file. It tells you the type of a file.

CodeHunter

How do I check if an object file is in COFF or ELF format from within C?

Recent Posts

How can I color dots in a xy scatterplot according to column value?

How to update a claim in ASP.NET Identity?

What does {0} mean when initializing an object?

Accessing members of items in a JSONArray with Java

How to log SQL statements in Spring Boot?

Powershell Get-WebSite name parameter is ignored

How to detect scroll to bottom of html element

Java synchronized method

How to test controllers with CodeIgniter?

Detect Visual Composer

Matplotlib: Specify format of floats for tick labels

Rails join a list of strings with commas and "and" before the last