_chk stubs

#include <stdio.h>
#include <string.h>
#include <stdarg.h>

#define VA_WRAP(exp) \
    va_list va; \
    int done; \
    va_start(va, format); \
    done = exp; \
    va_end(va); \
    return done;

void* __memcpy_chk(void* dest, const void* src, size_t copy_amount, size_t dest_len) {
    return memcpy(dest, src, copy_amount);
}

int __sprintf_chk( char *dest, int flags, size_t dest_len_from_compiler, const char *format, ...) {
    VA_WRAP( vsprintf(dest, format, va) )
}

char *__strcat_chk (char *dest, const char *src, size_t dest_buf_size) {
    return strcat(dest, src);
}

void* __memmove_chk (void* dest, const void* src, size_t len, size_t dest_len) {
    return memmove(dest, src, len);
}

int __fprintf_chk (FILE *fp, int flag, const char *format, ...) {
    VA_WRAP( vfprintf (fp, format, va) )
}

char *__strcpy_chk (char *dest, const char *src, size_t dest_len) {
    return strcpy(dest, src);
}

int __vfprintf_chk (FILE *stream, int flags, const char *format, va_list va) {
    return vfprintf(stream, format, va);
}

char* __stpcpy_chk(char* dest, const char* src, size_t dest_len) {
    return stpcpy(dest, src);
}

int __printf_chk (int flag, const char *format, ...) {
    VA_WRAP( vfprintf (stdout, format, va) )
}

int __vsprintf_chk( char *dest, int flags, size_t dest_len_from_compiler, const char *format, va_list va) {
    return vsnprintf(dest, dest_len_from_compiler, format, va);
}

int __vsnprintf_chk( char *dest, size_t supplied_size, int flags, size_t dest_len_from_compiler, const char *format, va_list va) {
    return vsnprintf(dest, supplied_size, format, va);
}

void* __memset_chk (void* dest, int c, size_t n, size_t dest_len) {
    return memset(dest, c, n);
}

int __snprintf_chk( char *dest, size_t supplied_size, int flags, size_t dest_len_from_compiler, const char *format, ...) {
    VA_WRAP( __vsnprintf_chk(dest, supplied_size, flags, dest_len_from_compiler, format, va) )
}

int __open64_2 (const char *file, int oflag)
{
    printf("%s[%d]: Not implemented.\n", __FILE__, __LINE__);
    return 0;
}