Re: [LTP] [PATCH] Fix temporary file creation in mmapstress tests

[Subrata Modak <subrata@linux.vnet.ibm.com>]

On Sun, 2009-06-07 at 02:32 +0200, Jiri Palecek wrote: 
> Hello,
> 
> these are two little fixes of the mmapstress test.
> 
>  - the mkstemp() function returns -1 on error; the tests treat 0 as
>    error instead
> 
>  - mkstemp() returns a file descriptor; no need to open the file once
>    more later
> 
> Regards
>     Jiri Palecek
> 
> Signed-off-by: Jiri Palecek <jpalecek@web.de>

Thanks.

Regards--
Subrata

> ---
>  testcases/kernel/mem/mmapstress/mmapstress02.c |    6 +-----
>  testcases/kernel/mem/mmapstress/mmapstress05.c |    6 +-----
>  2 files changed, 2 insertions(+), 10 deletions(-)
> 
> diff --git a/testcases/kernel/mem/mmapstress/mmapstress02.c b/testcases/kernel/mem/mmapstress/mmapstress02.c
> index a0f0693..f801a2e 100644
> --- a/testcases/kernel/mem/mmapstress/mmapstress02.c
> +++ b/testcases/kernel/mem/mmapstress/mmapstress02.c
> @@ -101,7 +101,7 @@ main(int argc, char *argv[]) {
>  		return 1;
>  	}
>  	(void)time(&t);
> -	if (!(fd = mkstemp(tmpname))) {
> +	if ((fd = mkstemp(tmpname)) == -1) {
>  		ERROR("mkstemp failed");
>  		anyfail();
>  	}
> @@ -114,10 +114,6 @@ main(int argc, char *argv[]) {
>          CATCH_SIG(SIGINT);
>          CATCH_SIG(SIGQUIT);
>          CATCH_SIG(SIGTERM);
> -	if ((fd = open(tmpname, O_CREAT|O_RDWR, 0777)) == -1) {
> -		ERROR("couldn't open temporary file");
> -		anyfail();
> -	}
>  	if (sbrk(2*pagesize - ((ulong)sbrk(0) & (pagesize-1))) == (char *)-1) {
>  		CLEANERROR("couldn't round up brk");
>  		anyfail();
> diff --git a/testcases/kernel/mem/mmapstress/mmapstress05.c b/testcases/kernel/mem/mmapstress/mmapstress05.c
> index 9155834..4d25b8d 100644
> --- a/testcases/kernel/mem/mmapstress/mmapstress05.c
> +++ b/testcases/kernel/mem/mmapstress/mmapstress05.c
> @@ -133,7 +133,7 @@ main(int argc, char *argv[])
>  	-- sreeni
>  	*/
> 
> -	if (!(fd = mkstemp(tmpname))) {
> +	if ((fd = mkstemp(tmpname))==-1) {
>  		ERROR("mkstemp failed");
>  		anyfail();
>  	}
> @@ -146,10 +146,6 @@ main(int argc, char *argv[])
>  	CATCH_SIG(SIGINT);
>          CATCH_SIG(SIGQUIT);
>          CATCH_SIG(SIGTERM);
> -	if ((fd = open(tmpname, O_RDWR|O_CREAT, 0777)) == -1) {
> -		ERROR("open failed");
> -		anyfail();
> -	}
>  	for (i = 0; i < pagesize; i++)
>  		buf[i] = 'a';
>  	if (write(fd, buf, pagesize) != pagesize) {


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