Fix readahead test for opensource.

Skip InvalidOffset and InvalidLength for Linux as the test is invalid for
later Kernel versions.

Add UnsupportedFile test as this check is in all kernel versions.

PiperOrigin-RevId: 327248035

2 files changed, 12 insertions, 0 deletions

diff --git a/test/syscalls/linux/BUILD b/test/syscalls/linux/BUILD
index 66a31cd28..6299870bc 100644
--- a/test/syscalls/linux/BUILD
+++ b/test/syscalls/linux/BUILD
@@ -1862,6 +1862,7 @@ cc_binary(
     srcs = ["readahead.cc"],
     linkstatic = 1,
     deps = [
+        ":socket_test_util",
         "//test/util:file_descriptor",
         gtest,
         "//test/util:temp_path",
diff --git a/test/syscalls/linux/readahead.cc b/test/syscalls/linux/readahead.cc
index 09703b5c1..71073bb3c 100644
--- a/test/syscalls/linux/readahead.cc
+++ b/test/syscalls/linux/readahead.cc
@@ -16,6 +16,7 @@
 #include <fcntl.h>
 
 #include "gtest/gtest.h"
+#include "test/syscalls/linux/socket_test_util.h"
 #include "test/util/file_descriptor.h"
 #include "test/util/temp_path.h"
 #include "test/util/test_util.h"
@@ -29,7 +30,15 @@ TEST(ReadaheadTest, InvalidFD) {
   EXPECT_THAT(readahead(-1, 1, 1), SyscallFailsWithErrno(EBADF));
 }
 
+TEST(ReadaheadTest, UnsupportedFile) {
+  FileDescriptor sock =
+      ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_UNIX, SOCK_STREAM, 0));
+  ASSERT_THAT(readahead(sock.get(), 1, 1), SyscallFailsWithErrno(EINVAL));
+}
+
 TEST(ReadaheadTest, InvalidOffset) {
+  // This test is not valid for some Linux Kernels.
+  SKIP_IF(!IsRunningOnGvisor());
   const TempPath in_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile());
   const FileDescriptor fd =
       ASSERT_NO_ERRNO_AND_VALUE(Open(in_file.path(), O_RDWR));
@@ -79,6 +88,8 @@ TEST(ReadaheadTest, WriteOnly) {
 }
 
 TEST(ReadaheadTest, InvalidSize) {
+  // This test is not valid on some Linux kernels.
+  SKIP_IF(!IsRunningOnGvisor());
   const TempPath in_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile());
   const FileDescriptor fd =
       ASSERT_NO_ERRNO_AND_VALUE(Open(in_file.path(), O_RDWR));