Re: [PATCH bpf 6/6] selftest/bpf: Introduce __attribute__((cleanup)) in create_pair()

On 7/26/24 19:27, Jakub Sitnicki wrote:

On Wed, Jul 24, 2024 at 01:32 PM +02, Michal Luczaj wrote:

...

+#define take_fd(fd) \

• ({ \

• __auto_type __val = (fd);                                      \
  

• fd = -EBADF;                                                   \
  

• __val;                                                         \
  

• })

Probably should operate on a pointer to fd to avoid side effects, like __get_and_null macro in include/linux/cleanup.h. take_fd is effectively __get_and_null(fd, -EBADFD). [...]

OK, I'll just make use of stuff from cleanup.h.