[LTP] [PATCH 2/2] syscalls/lseek11.c: fix undefined syncfs() && SEEK_DATA

[Cyril Hrubis <chrubis@suse.cz>]

Hi!
> 1) Compilation failed on RHEL6.9GA because syncfs() was not defined.
>    this function was introduced since linux 2.6.39, so we could use
>    sync() instead of syncfs().

Looking at this again, why don't we use fsync(fd) instead?

> 2) We should Add a check if SEEK_DATA was implemented in get_blocksize().

Missed the lseek() in get_blocksize(), sorry.

> Signed-off-by: Xiao Yang <yangx.jy@cn.fujitsu.com>
> ---
>  testcases/kernel/syscalls/lseek/lseek11.c | 17 ++++++++++++-----
>  1 file changed, 12 insertions(+), 5 deletions(-)
> 
> diff --git a/testcases/kernel/syscalls/lseek/lseek11.c b/testcases/kernel/syscalls/lseek/lseek11.c
> index fe226b5..01b9fa4 100644
> --- a/testcases/kernel/syscalls/lseek/lseek11.c
> +++ b/testcases/kernel/syscalls/lseek/lseek11.c
> @@ -116,8 +116,15 @@ static void get_blocksize(void)
>  		offset <<= 1;
>  		SAFE_FTRUNCATE(fd, 0);
>  		SAFE_PWRITE(1, fd, "a", 1, offset);
> -		syncfs(fd);
> -		pos = SAFE_LSEEK(fd, 0, SEEK_DATA);
> +		sync();
> +		pos = lseek(fd, 0, SEEK_DATA);
> +		if (pos == -1) {
> +			if (errno == EINVAL) {
> +				tst_brk(TCONF | TERRNO,
> +				"SEEK_DATA not implemented");
> +			}
> +			tst_brk(TBROK | TERRNO, "SEEK_DATA failed");
> +		}
>  	}
>  
>  	/* bisect for double check */
> @@ -125,7 +132,7 @@ static void get_blocksize(void)
>  	while (shift && offset < (st.st_blksize * 2)) {
>  		SAFE_FTRUNCATE(fd, 0);
>  		SAFE_PWRITE(1, fd, "a", 1, offset);
> -		syncfs(fd);
> +		sync();
>  		pos = SAFE_LSEEK(fd, 0, SEEK_DATA);
>  		offset += pos ? -shift : shift;
>  		shift >>= 1;
> @@ -178,7 +185,7 @@ static void setup(void)
>  	if (lseek(fd, 0, SEEK_HOLE) < 0) {
>  		if (errno == EINVAL) {
>  			tst_brk(TCONF | TERRNO,
> -				"SEEK_DATA and SEEK_HOLE not implemented");
> +				"SEEK_HOLE not implemented");
>  		}
>  		tst_brk(TBROK | TERRNO, "SEEK_HOLE failed");
>  	}

We should get rid of this whole lseek() test in setup() since we call
tst_brk() in the get_blocksize() the lseek() will never fail here.

> @@ -192,7 +199,7 @@ static void setup(void)
>  	SAFE_LSEEK(fd, -128, SEEK_END);
>  	write_data(fd, i + 1);
>  
> -	syncfs(fd);
> +	sync();
>  	SAFE_LSEEK(fd, 0, SEEK_SET);
>  }
>  
> -- 
> 1.8.3.1
> 
> 
> 
> 
> -- 
> Mailing list info: https://lists.linux.it/listinfo/ltp

-- 
Cyril Hrubis
chrubis@suse.cz