[LTP] [PATCH v2] accept03/tst_fd: Harden parallel runs against

[Cyril Hrubis]

Hi!
> commit fa68043e5948ff1b8cb2c647d309ccf4808e23d7
> Author: Petr Vorel <pvorel@suse.cz>
> Date:   2026-11-04 18:34:06 +0100
> 
>     tst_fd: Add check for missing .needs_tmpdir
> 
>     Signed-off-by: Petr Vorel <pvorel@suse.cz>
> 
> diff --git lib/tst_fd.c lib/tst_fd.c
> index 6538a098c7..05e1bbe8b0 100644
> --- lib/tst_fd.c
> +++ lib/tst_fd.c
> @@ -22,6 +22,8 @@
>  #include "lapi/bpf.h"
>  #include "lapi/fsmount.h"
>  
> +#include "tso_tmpdir.h"
> +
>  #include "tst_fd.h"
>  
>  struct tst_fd_desc {
> @@ -30,8 +32,17 @@ struct tst_fd_desc {
>  	const char *desc;
>  };
>  
> +static void require_tmpdir(struct tst_fd *fd)
> +{
> +	if (!tst_tmpdir_created()) {
> +		tst_brk(TBROK, "%s fd requires .needs_tmpdir = 1",
> +			tst_fd_desc(fd));
> +	}
> +}
> +
>  static void open_file(struct tst_fd *fd)
>  {
> +	require_tmpdir(fd);
>  	fd->fd = SAFE_OPEN("fd_file", O_RDWR | O_CREAT, 0666);
>  	SAFE_UNLINK("fd_file");
>  }
> @@ -40,6 +51,7 @@ static void open_path(struct tst_fd *fd)
>  {
>  	int tfd;
>  
> +	require_tmpdir(fd);
>  	tfd = SAFE_CREAT("fd_file", 0666);
>  	SAFE_CLOSE(tfd);
>  
> @@ -50,6 +62,7 @@ static void open_path(struct tst_fd *fd)
>  
>  static void open_dir(struct tst_fd *fd)
>  {
> +	require_tmpdir(fd);
>  	SAFE_MKDIR("fd_dir", 0700);
>  	fd->fd = SAFE_OPEN("fd_dir", O_DIRECTORY);
>  	SAFE_RMDIR("fd_dir");

This approach looks good to me.

-- 
Cyril Hrubis
chrubis@suse.cz