linux-kernel - Re: [PATCH v2] selftests/move_mount_set_group:Make tests build with old libc

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Date: Wed, 10 Jan 2024 18:45:59 +0100
From: Mickaël Salaün <mic@...ikod.net>
To: Hu Yadi <hu.yadi@....com>
Cc: jmorris@...ei.org, serge@...lyn.com, shuah@...nel.org, 
	mathieu.desnoyers@...icios.com, linux-api@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-security-module@...r.kernel.org, linux-kselftest@...r.kernel.org, 514118380@...com, 
	berlin@....com
Subject: Re: [PATCH v2] selftests/move_mount_set_group:Make tests build with
 old libc

On Wed, Jan 10, 2024 at 03:29:01PM +0800, Hu Yadi wrote:
> From: "Hu.Yadi" <hu.yadi@....com>
> 
> Replace SYS_<syscall> with __NR_<syscall>.  Using the __NR_<syscall>
> notation, provided by UAPI, is useful to build tests on systems without
> the SYS_<syscall> definitions.

This looks a lot like that...
https://git.kernel.org/stable/c/87129ef13603ae46c82bcd09eed948acf0506dbb

> 
> Replace SYS_move_mount with __NR_move_mount
> 
> Signed-off-by: Hu.Yadi <hu.yadi@....com>
> Suggested-by:Jiao <jiaoxupo@....com>
> Reviewed-by:Berlin <berlin@....com>
> ---
> Changes v1 -> v2:
>  - Fix mail of Suggested-by and Reviewed-by
> 
>  .../move_mount_set_group/move_mount_set_group_test.c          | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/tools/testing/selftests/move_mount_set_group/move_mount_set_group_test.c b/tools/testing/selftests/move_mount_set_group/move_mount_set_group_test.c
> index 50ed5d475dd1..bcf51d785a37 100644
> --- a/tools/testing/selftests/move_mount_set_group/move_mount_set_group_test.c
> +++ b/tools/testing/selftests/move_mount_set_group/move_mount_set_group_test.c
> @@ -218,7 +218,7 @@ static bool move_mount_set_group_supported(void)
>  	if (mount(NULL, SET_GROUP_FROM, NULL, MS_SHARED, 0))
>  		return -1;
>  
> -	ret = syscall(SYS_move_mount, AT_FDCWD, SET_GROUP_FROM,
> +	ret = syscall(__NR_move_mount, AT_FDCWD, SET_GROUP_FROM,
>  		      AT_FDCWD, SET_GROUP_TO, MOVE_MOUNT_SET_GROUP);
>  	umount2("/tmp", MNT_DETACH);
>  
> @@ -363,7 +363,7 @@ TEST_F(move_mount_set_group, complex_sharing_copying)
>  		       CLONE_VM | CLONE_FILES); ASSERT_GT(pid, 0);
>  	ASSERT_EQ(wait_for_pid(pid), 0);
>  
> -	ASSERT_EQ(syscall(SYS_move_mount, ca_from.mntfd, "",
> +	ASSERT_EQ(syscall(__NR_move_mount, ca_from.mntfd, "",
>  			  ca_to.mntfd, "", MOVE_MOUNT_SET_GROUP
>  			  | MOVE_MOUNT_F_EMPTY_PATH | MOVE_MOUNT_T_EMPTY_PATH),
>  		  0);
> -- 
> 2.23.0
>