This is what I ended up with the C function returns a reference to a hash with all files listed I might add a second for loop so it'll list the file recursively, any suggestions welcome. 
#!/usr/bin/env perl
use 5.012;
use strict;
use warnings;
use Data::Dumper qw(Dumper);

my $str = &listfiles('<directory>');
print Dumper \$str;


use Inline C => <<'END_OF_C_CODE';
#include <dirent.h>     /* Defines DT_* constants */
#include <fcntl.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/syscall.h>

#define handle_error(msg) do { perror(msg); exit(EXIT_FAILURE); } whil
+e (0)

struct linux_dirent {
   long           d_ino;
   off_t          d_off;
   unsigned short d_reclen;
   char           d_name[];
};

#define BUF_SIZE 1024*1024*5
SV* listfiles(const char * dir) {
   int fd, nread;
   char buf[BUF_SIZE];
   struct linux_dirent *d;
   int bpos;
   char d_type;
   char inode;
   HV* hash = newHV();

   fd = open(dir, O_RDONLY | O_DIRECTORY);
   if (fd == -1) handle_error("open");
   for ( ; ; ) {
       nread = syscall(SYS_getdents, fd, buf, BUF_SIZE);
       if (nread == -1) handle_error("getdents");
       if (nread == 0) break;
       for (bpos = 0; bpos < nread;) {
           d = (struct linux_dirent *) (buf + bpos);
           if (d->d_ino != 0) {
               size_t nbytes = snprintf(NULL, 0, "%d", d->d_ino) + 1;
               char *inode = malloc(nbytes);
               snprintf(inode, nbytes, "%d", d->d_ino);
               hv_store(hash, inode, strlen(inode), newSVpvf("%s",(cha
+r *) d->d_name, 0), 0);

           }
           bpos += d->d_reclen;
       }
   }
return newRV_noinc((SV*) hash);
}
END_OF_C_CODE

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In reply to Re^3: using syscalls in perl through inline c by ofer
in thread using syscalls in perl through inline c by ofer

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