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Subject[PATCH 2/2] selftests: add tests for CLOSE_RANGE_CLOEXEC
Date
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
---
.../testing/selftests/core/close_range_test.c | 44 +++++++++++++++++++
1 file changed, 44 insertions(+)

diff --git a/tools/testing/selftests/core/close_range_test.c b/tools/testing/selftests/core/close_range_test.c
index c99b98b0d461..b8789262cd7d 100644
--- a/tools/testing/selftests/core/close_range_test.c
+++ b/tools/testing/selftests/core/close_range_test.c
@@ -23,6 +23,10 @@
#define CLOSE_RANGE_UNSHARE (1U << 1)
#endif

+#ifndef CLOSE_RANGE_CLOEXEC
+#define CLOSE_RANGE_CLOEXEC (1U << 2)
+#endif
+
static inline int sys_close_range(unsigned int fd, unsigned int max_fd,
unsigned int flags)
{
@@ -224,4 +228,44 @@ TEST(close_range_unshare_capped)
EXPECT_EQ(0, WEXITSTATUS(status));
}

+TEST(close_range_cloexec)
+{
+ int i, ret;
+ int open_fds[101];
+
+ for (i = 0; i < ARRAY_SIZE(open_fds); i++) {
+ int fd;
+
+ fd = open("/dev/null", O_RDONLY);
+ ASSERT_GE(fd, 0) {
+ if (errno == ENOENT)
+ XFAIL(return, "Skipping test since /dev/null does not exist");
+ }
+
+ open_fds[i] = fd;
+ }
+
+ EXPECT_EQ(-1, sys_close_range(open_fds[0], open_fds[100], -1)) {
+ if (errno == ENOSYS)
+ XFAIL(return, "close_range() syscall not supported");
+ }
+
+ EXPECT_EQ(0, sys_close_range(open_fds[0], open_fds[50], CLOSE_RANGE_CLOEXEC));
+
+ for (i = 0; i <= 50; i++) {
+ int flags = fcntl(open_fds[i], F_GETFD);
+
+ EXPECT_GT(flags, -1);
+ EXPECT_EQ(flags & FD_CLOEXEC, FD_CLOEXEC);
+ }
+
+ for (i = 51; i <= 100; i++) {
+ int flags = fcntl(open_fds[i], F_GETFD);
+
+ EXPECT_GT(flags, -1);
+ EXPECT_EQ(flags & FD_CLOEXEC, 0);
+ }
+}
+
+
TEST_HARNESS_MAIN
--
2.26.2
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