[LTP] [PATCH] getrlimit/getrlimit03: Skip test if __NR_getrlimit not implemented

[Wei Gao]

On Tue, Jul 08, 2025 at 03:17:06PM +0800, Tiezhu Yang wrote:
> In the Linux kernel, LoongArch uses the generic syscall table which
> is defined in include/uapi/asm-generic/unistd.h, and also there is
> no __ARCH_WANT_SET_GET_RLIMIT in arch/loongarch/include/asm/unistd.h,
> so __NR_getrlimit is not implemented on LoongArch.
> 
> That is to say, getrlimit are superseded with prlimit64. There is no
> need to compare the return value and errno about the syscall numbers
> __NR_prlimit64 and __NR_getrlimit, just check this case and then skip
> the test.
> 
> Without this patch:
> 
> $ /opt/ltp/testcases/bin/getrlimit03
> ...
> getrlimit03.c:102: TFAIL: __NR_prlimit64(0) returned 0 (SUCCESS) but __NR_getrlimit(0) returned -1 (ENOSYS)
> getrlimit03.c:102: TFAIL: __NR_prlimit64(1) returned 0 (SUCCESS) but __NR_getrlimit(1) returned -1 (ENOSYS)
> getrlimit03.c:102: TFAIL: __NR_prlimit64(2) returned 0 (SUCCESS) but __NR_getrlimit(2) returned -1 (ENOSYS)
> getrlimit03.c:102: TFAIL: __NR_prlimit64(3) returned 0 (SUCCESS) but __NR_getrlimit(3) returned -1 (ENOSYS)
> getrlimit03.c:102: TFAIL: __NR_prlimit64(4) returned 0 (SUCCESS) but __NR_getrlimit(4) returned -1 (ENOSYS)
> getrlimit03.c:102: TFAIL: __NR_prlimit64(5) returned 0 (SUCCESS) but __NR_getrlimit(5) returned -1 (ENOSYS)
> getrlimit03.c:102: TFAIL: __NR_prlimit64(6) returned 0 (SUCCESS) but __NR_getrlimit(6) returned -1 (ENOSYS)
> getrlimit03.c:102: TFAIL: __NR_prlimit64(7) returned 0 (SUCCESS) but __NR_getrlimit(7) returned -1 (ENOSYS)
> getrlimit03.c:102: TFAIL: __NR_prlimit64(8) returned 0 (SUCCESS) but __NR_getrlimit(8) returned -1 (ENOSYS)
> getrlimit03.c:102: TFAIL: __NR_prlimit64(9) returned 0 (SUCCESS) but __NR_getrlimit(9) returned -1 (ENOSYS)
> getrlimit03.c:102: TFAIL: __NR_prlimit64(10) returned 0 (SUCCESS) but __NR_getrlimit(10) returned -1 (ENOSYS)
> getrlimit03.c:102: TFAIL: __NR_prlimit64(11) returned 0 (SUCCESS) but __NR_getrlimit(11) returned -1 (ENOSYS)
> getrlimit03.c:102: TFAIL: __NR_prlimit64(12) returned 0 (SUCCESS) but __NR_getrlimit(12) returned -1 (ENOSYS)
> getrlimit03.c:102: TFAIL: __NR_prlimit64(13) returned 0 (SUCCESS) but __NR_getrlimit(13) returned -1 (ENOSYS)
> getrlimit03.c:102: TFAIL: __NR_prlimit64(14) returned 0 (SUCCESS) but __NR_getrlimit(14) returned -1 (ENOSYS)
> getrlimit03.c:102: TFAIL: __NR_prlimit64(15) returned 0 (SUCCESS) but __NR_getrlimit(15) returned -1 (ENOSYS)
> 
> Summary:
> passed   0
> failed   16
> broken   0
> skipped  0
> warnings 0
> 
> With this patch:
> 
> $ /opt/ltp/testcases/bin/getrlimit03
> ...
> getrlimit03.c:167: TCONF: __NR_getrlimit not implemented: ENOSYS (38)
> getrlimit03.c:167: TCONF: __NR_getrlimit not implemented: ENOSYS (38)
> getrlimit03.c:167: TCONF: __NR_getrlimit not implemented: ENOSYS (38)
> getrlimit03.c:167: TCONF: __NR_getrlimit not implemented: ENOSYS (38)
> getrlimit03.c:167: TCONF: __NR_getrlimit not implemented: ENOSYS (38)
> getrlimit03.c:167: TCONF: __NR_getrlimit not implemented: ENOSYS (38)
> getrlimit03.c:167: TCONF: __NR_getrlimit not implemented: ENOSYS (38)
> getrlimit03.c:167: TCONF: __NR_getrlimit not implemented: ENOSYS (38)
> getrlimit03.c:167: TCONF: __NR_getrlimit not implemented: ENOSYS (38)
> getrlimit03.c:167: TCONF: __NR_getrlimit not implemented: ENOSYS (38)
> getrlimit03.c:167: TCONF: __NR_getrlimit not implemented: ENOSYS (38)
> getrlimit03.c:167: TCONF: __NR_getrlimit not implemented: ENOSYS (38)
> getrlimit03.c:167: TCONF: __NR_getrlimit not implemented: ENOSYS (38)
> getrlimit03.c:167: TCONF: __NR_getrlimit not implemented: ENOSYS (38)
> getrlimit03.c:167: TCONF: __NR_getrlimit not implemented: ENOSYS (38)
> getrlimit03.c:167: TCONF: __NR_getrlimit not implemented: ENOSYS (38)
> 
> Summary:
> passed   0
> failed   0
> broken   0
> skipped  16
> warnings 0
> 
> How to reproduce:
> 
> git clone https://github.com/linux-test-project/ltp.git
> cd ltp
> make autotools
> ./configure
> make all
> sudo make install
> /opt/ltp/testcases/bin/getrlimit03
> 
> Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
> ---
>  testcases/kernel/syscalls/getrlimit/getrlimit03.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/testcases/kernel/syscalls/getrlimit/getrlimit03.c b/testcases/kernel/syscalls/getrlimit/getrlimit03.c
> index 604082ccf..2d79057da 100644
> --- a/testcases/kernel/syscalls/getrlimit/getrlimit03.c
> +++ b/testcases/kernel/syscalls/getrlimit/getrlimit03.c
> @@ -162,6 +162,11 @@ static void run(unsigned int resource)
>  	errno = 0;
>  	ret_ul = getrlimit_ulong(resource, &rlim_ul);
>  	errno_ul = errno;
> +	if (errno_ul == ENOSYS) {
> +		tst_res(TCONF | TERRNO,
> +			"%s not implemented", __NR_getrlimit_ulong_str);
> +		return;
> +	}

Maybe following change can fix your issue since tst_syscall will
handle ENOSYS. You can have a try, thanks.

diff --git a/testcases/kernel/syscalls/getrlimit/getrlimit03.c b/testcases/kernel/syscalls/getrlimit/getrlimit03.c
index 604082ccf..aad27a402 100644
--- a/testcases/kernel/syscalls/getrlimit/getrlimit03.c
+++ b/testcases/kernel/syscalls/getrlimit/getrlimit03.c
@@ -77,7 +77,7 @@ struct rlimit_ulong {

 static int getrlimit_ulong(int resource, struct rlimit_ulong *rlim)
 {
-       return syscall(__NR_getrlimit_ulong, resource, rlim);
+       return tst_syscall(__NR_getrlimit_ulong, resource, rlim);
 }

 const long RLIM_INFINITY_L = LONG_MAX;
@@ -90,7 +90,7 @@ struct rlimit_long {

 static int getrlimit_long(int resource, struct rlimit_long *rlim)
 {
-       return syscall(__NR_getrlimit, resource, rlim);
+       return tst_syscall(__NR_getrlimit, resource, rlim);
 }
 #endif


>  
>  	if (compare_retval(resource, ret_u64, errno_u64, ret_ul, errno_ul,
>  			   __NR_getrlimit_ulong_str) ||
> -- 
> 2.48.1
> 
> 
> -- 
> Mailing list info: https://lists.linux.it/listinfo/ltp