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

[Tiezhu Yang]

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That is to say, getrlimit are superseded with prlimit64.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;
+	}
 
 	if (compare_retval(resource, ret_u64, errno_u64, ret_ul, errno_ul,
 			   __NR_getrlimit_ulong_str) ||
-- 
2.48.1