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#include "config.h"
#include <sys/types.h>
#include <stdlib.h>
#include <unistd.h>
/*
* This function fakes mmap() by reading `len' bytes from the file descriptor
* `fd' and returning a pointer to that memory. The "mapped" region can later
* be deallocated with munmap().
*
* Note: ONLY reading is supported and only reading of the exact size of the
* file will work.
*
* PUBLIC: #ifndef HAVE_MMAP
* PUBLIC: char *mmap __P((char *, size_t, int, int, int, off_t));
* PUBLIC: #endif
*/
char *
mmap(addr, len, prot, flags, fd, off)
char *addr;
size_t len;
int prot, flags, fd;
off_t off;
{
char *ptr;
if ((ptr = (char *)malloc(len)) == 0)
return ((char *)-1);
if (read(fd, ptr, len) < 0) {
free(ptr);
return ((char *)-1);
}
return (ptr);
}
/*
* PUBLIC: #ifndef HAVE_MMAP
* PUBLIC: int munmap __P((char *, size_t));
* PUBLIC: #endif
*/
int
munmap(addr, len)
char *addr;
size_t len;
{
free(addr);
return (0);
}
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