Signed-off-by: Michal Clapinski mclapinski@google.com --- tools/testing/selftests/memfd/memfd_test.c | 32 ++++++++++++++++++++++ 1 file changed, 32 insertions(+)
diff --git a/tools/testing/selftests/memfd/memfd_test.c b/tools/testing/selftests/memfd/memfd_test.c index 3df008677239..1a702af6e01a 100644 --- a/tools/testing/selftests/memfd/memfd_test.c +++ b/tools/testing/selftests/memfd/memfd_test.c @@ -13,6 +13,7 @@ #include <stdlib.h> #include <signal.h> #include <string.h> +#include <sys/ioctl.h> #include <sys/mman.h> #include <sys/stat.h> #include <sys/syscall.h> @@ -39,6 +40,10 @@
#define MFD_NOEXEC_SEAL 0x0008U
+#ifndef MEMFD_CHECK_IF_ORIGINAL +#define MEMFD_CHECK_IF_ORIGINAL _IOR(0xB8, 0, int) +#endif + /* * Default is not to test hugetlbfs */ @@ -1567,6 +1572,31 @@ static void test_share_fork(char *banner, char *b_suffix) close(fd); }
+static void test_ioctl_check_original(void) +{ + int fd, fd2; + + printf("%s IOCTL-CHECK-ORIGINAL\n", memfd_str); + fd = sys_memfd_create("kern_memfd_check_original", 0); + if (fd < 0) { + printf("memfd_create failed: %m\n"); + abort(); + } + if (ioctl(fd, MEMFD_CHECK_IF_ORIGINAL) != 1) { + printf("ioctl(MEMFD_CHECK_IF_ORIGINAL) failed\n"); + abort(); + } + + fd2 = mfd_assert_reopen_fd(fd); + if (ioctl(fd2, MEMFD_CHECK_IF_ORIGINAL) != 0) { + printf("ioctl(MEMFD_CHECK_IF_ORIGINAL) failed\n"); + abort(); + } + + close(fd); + close(fd2); +} + int main(int argc, char **argv) { pid_t pid; @@ -1609,6 +1639,8 @@ int main(int argc, char **argv) test_share_open("SHARE-OPEN", ""); test_share_fork("SHARE-FORK", "");
+ test_ioctl_check_original(); + /* Run test-suite in a multi-threaded environment with a shared * file-table. */ pid = spawn_idle_thread(CLONE_FILES | CLONE_FS | CLONE_VM);