int
getchar (void)
{
int result;
_IO_acquire_lock (_IO_stdin);
result = _IO_getc_unlocked (_IO_stdin);
_IO_release_lock (_IO_stdin);
return result;
}
int
_IO_getc (FILE *fp)
{
int result;
CHECK_FILE (fp, EOF);
_IO_acquire_lock (fp);
result = _IO_getc_unlocked (fp);
_IO_release_lock (fp);
return result;
}
char *
__gets_chk (char *buf, size_t size)
{
size_t count;
int ch;
char *retval;
if (size == 0)
__chk_fail ();
_IO_acquire_lock (stdin);
ch = _IO_getc_unlocked (stdin);
if (ch == EOF)
{
retval = NULL;
goto unlock_return;
}
if (ch == '\n')
count = 0;
else
{
/* This is very tricky since a file descriptor may be in the
non-blocking mode. The error flag doesn't mean much in this
case. We return an error only when there is a new error. */
int old_error = stdin->_flags & _IO_ERR_SEEN;
stdin->_flags &= ~_IO_ERR_SEEN;
buf[0] = (char) ch;
count = _IO_getline (stdin, buf + 1, size - 1, '\n', 0) + 1;
if (stdin->_flags & _IO_ERR_SEEN)
{
retval = NULL;
goto unlock_return;
}
else
stdin->_flags |= old_error;
}
if (count >= size)
__chk_fail ();
buf[count] = 0;
retval = buf;
unlock_return:
_IO_release_lock (stdin);
return retval;
}
char *
_IO_gets (char *buf)
{
_IO_size_t count;
int ch;
char *retval;
_IO_acquire_lock (_IO_stdin);
ch = _IO_getc_unlocked (_IO_stdin);
if (ch == EOF)
{
retval = NULL;
goto unlock_return;
}
if (ch == '\n')
count = 0;
else
{
/* This is very tricky since a file descriptor may be in the
non-blocking mode. The error flag doesn't mean much in this
case. We return an error only when there is a new error. */
int old_error = _IO_stdin->_IO_file_flags & _IO_ERR_SEEN;
_IO_stdin->_IO_file_flags &= ~_IO_ERR_SEEN;
buf[0] = (char) ch;
count = _IO_getline (_IO_stdin, buf + 1, INT_MAX, '\n', 0) + 1;
if (_IO_stdin->_IO_file_flags & _IO_ERR_SEEN)
{
retval = NULL;
goto unlock_return;
}
else
_IO_stdin->_IO_file_flags |= old_error;
}
buf[count] = 0;
retval = buf;
unlock_return:
_IO_release_lock (_IO_stdin);
return retval;
}
int
__getc_unlocked (FILE *fp)
{
CHECK_FILE (fp, EOF);
return _IO_getc_unlocked (fp);
}
int
getchar_unlocked ()
{
return _IO_getc_unlocked (stdin);
}
