[LTP] [PATCH 2/5] fcntl41: test for owner values on OFD posix locks

[Petr Vorel]

Hi Alexander,

> diff --git a/testcases/kernel/syscalls/fcntl/fcntl41.c b/testcases/kernel/syscalls/fcntl/fcntl41.c
> new file mode 100644
> index 000000000..40d14ff02
> --- /dev/null
> +++ b/testcases/kernel/syscalls/fcntl/fcntl41.c
...
> +#include <sys/wait.h>
> +
> +#include "tst_test.h"
> +
> +static int fd, fd2;
> +
> +void do_child1(void)
> +{
> +	const struct flock fl_0_0 = {
> +		.l_type = F_WRLCK,
> +		.l_whence = SEEK_SET,
> +		.l_start = 0L,
> +		.l_len = 1L,
> +	};
> +
> +	tst_res(TINFO, "thread1 waits for thread2 to lock 1-1");
> +	TST_CHECKPOINT_WAIT(1);
> +
> +	tst_res(TINFO, "thread1 lock region 0-0 - It should block");
> +	SAFE_FCNTL(fd2, F_OFD_SETLKW, &fl_0_0);
F_OFD_SETLKW is undefined on old Cent0S 7, we still support:
https://github.com/pevik/ltp/actions/runs/5331934790/jobs/9660442246

You need to use our fallback to avoid this.

#include "lapi/fcntl.h"

We also have fcntl_common.h, which is used for F_OFD_* (fcntl_compat(),
you may need to use it. It also includes lapi/fcntl.h.

Kind regards,
Petr