#include <sys/types.h>
#include <sys/mman.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <stdio.h>

#define CTSTRING "Content-type: image/jpeg\n\n"

printImage(imgFName)
char *imgFName;
{
    struct stat fi;
    caddr_t fp;
    int fd;

    if(write(STDOUT_FILENO, CTSTRING, strlen(CTSTRING)) == -1)
        exit(0);
    if( (fd = open(imgFName, O_RDONLY)) == -1)
        exit(0);
    fstat(fd, &fi);
    fp = mmap(NULL, fi.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
    if(fp == (caddr_t) -1)
        exit(0);
    if(write(STDOUT_FILENO, (void *) fp, fi.st_size) == -1)
        exit(0);
    munmap(fp, fi.st_size);
     close(fd);

     exit(0);
}