[LTP] [PATCH v2] syscalls: Check for time64 unsafe syscalls before using them

[Yang Xu]

Hi Khem
> musl is using 64bit time_t now on 32bit architectures and these syscalls
> no longer exist, therefore its better to check for them being available
> before using them
> 
> Signed-off-by: Khem Raj <raj.khem@gmail.com>
> ---
>   lib/tst_clocks.c                                        | 9 +++++----
>   testcases/kernel/syscalls/gettimeofday/gettimeofday01.c | 6 ++----
>   testcases/kernel/syscalls/gettimeofday/gettimeofday02.c | 8 +++-----
>   3 files changed, 10 insertions(+), 13 deletions(-)
> 
> diff --git a/lib/tst_clocks.c b/lib/tst_clocks.c
> index 5195da38f3..f4f8b2846b 100644
> --- a/lib/tst_clocks.c
> +++ b/lib/tst_clocks.c
> @@ -10,21 +10,22 @@
>   #define _GNU_SOURCE
>   #include <unistd.h>
>   #include <time.h>
> -#include <sys/syscall.h>
>   
> +#include "test.h"
>   #include "tst_clocks.h"
> +#include "lapi/syscalls.h"
>   
>   int tst_clock_getres(clockid_t clk_id, struct timespec *res)
>   {
> -	return syscall(SYS_clock_getres, clk_id, res);
> +	return ltp_syscall(__NR_clock_getres, clk_id, res);
It should use new api, include "tst_test.h" and use tst_syscall. It 
doesn't like gettimeofday01.c.
>   }
>   
>   int tst_clock_gettime(clockid_t clk_id, struct timespec *ts)
>   {
> -	return syscall(SYS_clock_gettime, clk_id, ts);
> +	return ltp_syscall(__NR_clock_gettime, clk_id, ts);
>   }
>   
>   int tst_clock_settime(clockid_t clk_id, struct timespec *ts)
>   {
> -	return syscall(SYS_clock_settime, clk_id, ts);
> +	return ltp_syscall(__NR_clock_settime, clk_id, ts);
>   }
> diff --git a/testcases/kernel/syscalls/gettimeofday/gettimeofday01.c b/testcases/kernel/syscalls/gettimeofday/gettimeofday01.c
> index 583d8f7b9b..08ea1673ad 100644
> --- a/testcases/kernel/syscalls/gettimeofday/gettimeofday01.c
> +++ b/testcases/kernel/syscalls/gettimeofday/gettimeofday01.c
> @@ -38,10 +38,8 @@
>   #include <sys/time.h>
>   #include <errno.h>
>   #include "test.h"
> -#include <sys/syscall.h>
>   #include <unistd.h>
> -
> -#define gettimeofday(a,b)  syscall(__NR_gettimeofday,a,b)
> +#include "lapi/syscalls.h"
>   
>   char *TCID = "gettimeofday01";
>   int TST_TOTAL = 1;
> @@ -63,7 +61,7 @@ int main(int ac, char **av)
>   	for (lc = 0; TEST_LOOPING(lc); lc++) {
>   		tst_count = 0;
>   
> -		TEST(gettimeofday((void *)-1, (void *)-1));
> +		TEST(ltp_syscall(__NR_gettimeofday, (void *)-1, (void *)-1));
In future, we can convert this case into new api and use tst_syscall.
>   
>   		/* gettimeofday returns an int, so we need to turn the long
>   		 * TEST_RETURN into an int to test with */
> diff --git a/testcases/kernel/syscalls/gettimeofday/gettimeofday02.c b/testcases/kernel/syscalls/gettimeofday/gettimeofday02.c
> index 1d60f448e8..5170ad2f78 100644
> --- a/testcases/kernel/syscalls/gettimeofday/gettimeofday02.c
> +++ b/testcases/kernel/syscalls/gettimeofday/gettimeofday02.c
> @@ -16,14 +16,12 @@
>   #include <stdint.h>
>   #include <sys/time.h>
>   #include <stdlib.h>
> -#include <sys/syscall.h>
>   #include <unistd.h>
>   #include <time.h>
>   #include <errno.h>
>   
>   #include "tst_test.h"
> -
> -#define gettimeofday(a,b)  syscall(__NR_gettimeofday,a,b)
> +#include "lapi/syscalls.h"
>   
>   static volatile sig_atomic_t done;
>   static char *str_rtime;
> @@ -48,13 +46,13 @@ static void verify_gettimeofday(void)
>   
>   	alarm(rtime);
>   
> -	if (gettimeofday(&tv1, NULL)) {
> +	if (tst_syscall(__NR_gettimeofday, &tv1, NULL)) {
>   		tst_res(TBROK | TERRNO, "gettimeofday() failed");
>   		return;
>   	}
>   
>   	while (!done) {
> -		if (gettimeofday(&tv2, NULL)) {
> +		if (tst_syscall(__NR_gettimeofday, &tv2, NULL)) {
>   			tst_res(TBROK | TERRNO, "gettimeofday() failed");
>   			return;
>   		}
> 
other than, this patch looks good to me.
Reviewed-by: Yang Xu <xuyang2018.jy@cn.fujitsu.com>