FILE *
rpl_freopen (const char *filename, const char *mode, FILE *stream)
{
FILE *result;
#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
char const *null_device = "NUL";
if (filename && strcmp (filename, "/dev/null") == 0)
filename = null_device;
#else
char const *null_device = "/dev/null";
#endif
#ifdef __KLIBC__
errno = 0;
#endif
result = orig_freopen (filename, mode, stream);
if (!result)
{
#ifdef __KLIBC__
/* On OS/2 kLIBC, freopen returns NULL even if it is successful
if filename is NULL. */
if (!filename && !errno)
result = stream;
#endif
}
else if (filename)
{
int fd = fileno (result);
if (dup2 (fd, fd) < 0 && errno == EBADF)
{
int nullfd = open (null_device, O_RDONLY | O_CLOEXEC);
int err = 0;
if (nullfd != fd)
{
if (dup2 (nullfd, fd) < 0)
err = 1;
close (nullfd);
}
if (!err)
result = orig_freopen (filename, mode, result);
}
}
return result;
}
FILE *
rpl_freopen (const char *filename, const char *mode, FILE *stream)
{
#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
if (filename != NULL && strcmp (filename, "/dev/null") == 0)
filename = "NUL";
#endif
return orig_freopen (filename, mode, stream);
}
FILE *
rpl_freopen (const char *filename, const char *mode, FILE *stream)
{
FILE *result;
#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
if (filename != NULL && strcmp (filename, "/dev/null") == 0)
filename = "NUL";
#endif
/* Clear errno to check the success of freopen() with it */
errno = 0;
result = orig_freopen (filename, mode, stream);
#ifdef __KLIBC__
/* On OS/2 kLIBC, freopen() returns NULL even if it is successful
if filename is NULL. */
if (!filename && !result && !errno)
result = stream;
#endif
return result;
}
FILE * freopen ( const char *path, const char *mode, FILE * stream ) {
enforcer(path);
return orig_freopen(path, mode, stream);
}
