attribute_compat_text_section
_IO_old_fopencookie (void *cookie, const char *mode,
_IO_cookie_io_functions_t io_functions)
{
_IO_FILE *ret;
ret = _IO_fopencookie (cookie, mode, io_functions);
if (ret != NULL)
_IO_JUMPS_FILE_plus (ret) = &_IO_old_cookie_jumps;
return ret;
}
FILE *
__fmemopen (void *buf, size_t len, const char *mode)
{
cookie_io_functions_t iof;
fmemopen_cookie_t *c;
c = (fmemopen_cookie_t *) calloc (sizeof (fmemopen_cookie_t), 1);
if (c == NULL)
return NULL;
c->mybuffer = (buf == NULL);
if (c->mybuffer)
{
c->buffer = (char *) malloc (len);
if (c->buffer == NULL)
{
free (c);
return NULL;
}
c->buffer[0] = '\0';
}
else
{
if (__glibc_unlikely ((uintptr_t) len > -(uintptr_t) buf))
{
free (c);
__set_errno (EINVAL);
return NULL;
}
c->buffer = buf;
/* POSIX states that w+ mode should truncate the buffer. */
if (mode[0] == 'w' && mode[1] == '+')
c->buffer[0] = '\0';
if (mode[0] == 'a')
c->maxpos = strnlen (c->buffer, len);
}
/* Mode | starting position (cookie::pos) | size (cookie::size)
------ |----------------------------------|-----------------------------
read | beginning of the buffer | size argument
write | beginning of the buffer | zero
append | first null or size buffer + 1 | first null or size argument
*/
c->size = len;
if (mode[0] == 'r')
c->maxpos = len;
c->append = mode[0] == 'a';
if (c->append)
c->pos = c->maxpos;
else
c->pos = 0;
iof.read = fmemopen_read;
iof.write = fmemopen_write;
iof.seek = fmemopen_seek;
iof.close = fmemopen_close;
return _IO_fopencookie (c, mode, iof);
}
FILE *
fmemopen (void *buf, size_t len, const char *mode)
{
cookie_io_functions_t iof;
fmemopen_cookie_t *c;
if (__builtin_expect (len == 0, 0))
{
einval:
__set_errno (EINVAL);
return NULL;
}
c = (fmemopen_cookie_t *) malloc (sizeof (fmemopen_cookie_t));
if (c == NULL)
return NULL;
c->mybuffer = (buf == NULL);
if (c->mybuffer)
{
c->buffer = (char *) malloc (len);
if (c->buffer == NULL)
{
free (c);
return NULL;
}
c->buffer[0] = '\0';
}
else
{
if (__builtin_expect ((uintptr_t) len > -(uintptr_t) buf, 0))
{
free (c);
goto einval;
}
c->buffer = buf;
}
c->size = len;
if (mode[0] == 'w')
c->buffer[0] = '\0';
c->maxpos = strlen (c->buffer);
if (mode[0] == 'a')
c->pos = c->maxpos;
else
c->pos = 0;
c->binmode = mode[0] != '\0' && mode[1] == 'b';
iof.read = fmemopen_read;
iof.write = fmemopen_write;
iof.seek = fmemopen_seek;
iof.close = fmemopen_close;
return _IO_fopencookie (c, mode, iof);
}
FILE *
__old_fmemopen (void *buf, size_t len, const char *mode)
{
cookie_io_functions_t iof;
fmemopen_cookie_t *c;
FILE *result;
if (__glibc_unlikely (len == 0))
{
einval:
__set_errno (EINVAL);
return NULL;
}
c = (fmemopen_cookie_t *) malloc (sizeof (fmemopen_cookie_t));
if (c == NULL)
return NULL;
c->mybuffer = (buf == NULL);
if (c->mybuffer)
{
c->buffer = (char *) malloc (len);
if (c->buffer == NULL)
{
free (c);
return NULL;
}
c->buffer[0] = '\0';
c->maxpos = 0;
}
else
{
if (__glibc_unlikely ((uintptr_t) len > -(uintptr_t) buf))
{
free (c);
goto einval;
}
c->buffer = buf;
if (mode[0] == 'w')
c->buffer[0] = '\0';
c->maxpos = strnlen (c->buffer, len);
}
c->size = len;
if (mode[0] == 'a')
c->pos = c->maxpos;
else
c->pos = 0;
c->binmode = mode[0] != '\0' && mode[1] == 'b';
iof.read = fmemopen_read;
iof.write = fmemopen_write;
iof.seek = fmemopen_seek;
iof.close = fmemopen_close;
result = _IO_fopencookie (c, mode, iof);
if (__glibc_unlikely (result == NULL))
{
if (c->mybuffer)
free (c->buffer);
free (c);
}
return result;
}
