Simple way to Get filesize in x86 Assembly Language

Question

Assuming that I have opened a file in assembly and have the file handle for that file in register eax. How would I go about getting the size of the file so I can allocate en

Answer 1

My solution -- Just use .lcomm to create locations for all the named variables

movl    inputfile, %ebx         #Move file handler into ebx for system call
movl    $0x6c, %eax          #Stat Sys Call into eax
leal    statlocation, %ecx      #Move reserved location for stat structure into
int     $0x80                    #Execute System Call
movl    20(%ecx), %eax          #20 to location of size variable, size is now in eax