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path: root/legacy/escape/src/lib/escape_mman.c
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#ifdef HAVE_CONFIG_H
# include "config.h"
#endif /* HAVE_CONFIG_H */

#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>

#include "sys/mman.h"

/***** API *****/


void *
mmap(void  *addr __UNUSED__,
     size_t len,
     int    prot,
     int    flags,
     int    fd,
     off_t  offset)
{
  void  *data;
  size_t size;

  data = malloc(len);
  if (!data)
    {
      fprintf (stderr, "[Escape] [mmap] malloc failed\n");
      return MAP_FAILED;
    }

  size = read(fd, data, len);
  if (size != len)
    {
      fprintf (stderr, "[Escape] [mmap] read failed\n");
      free(data);
      return MAP_FAILED;
    }

  if (lseek(fd, -len, SEEK_CUR) == -1)
    {
      fprintf (stderr, "[Escape] [mmap] lseek failed\n");
      free(data);
      return MAP_FAILED;
    }

  return data;
}

int
munmap(void  *addr,
       size_t len __UNUSED__)
{
  if (addr && (addr != MAP_FAILED))
    free(addr);

  return 0;
}


int madvise(void *addr __UNUSED__,
    size_t length __UNUSED__,
    int advice __UNUSED__)
{
  return 0;
}