1 files changed, 58 insertions, 0 deletions
diff --git a/test/test-fcntl.c b/test/test-fcntl.c
new file mode 100644
index 0000000..b593d50
--- /dev/null
+++ b/test/test-fcntl.c
@@ -0,0 +1,58 @@
+/* fcntl-linux.h doesn't define F_GETPIPE_SZ and F_SETPIPE_SZ without
+ * this */
+#define _GNU_SOURCE
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <limits.h>
+#include <unistd.h>
+#include <string.h>
+
+int test_pipe_sz()
+{
+#if defined(F_GETPIPE_SZ) && defined(F_SETPIPE_SZ)
+	int pipefd[2];
+
+	if (pipe(pipefd) < 0) {
+		perror("pipe");
+		return 1;
+	}
+
+	const int orig_size = fcntl(pipefd[0], F_GETPIPE_SZ);
+	if (orig_size < 0) {
+		perror("F_GETPIPE_SZ");
+		return 1;
+	}
+
+	const int new_size = orig_size * 2;
+
+	if (fcntl(pipefd[0], F_SETPIPE_SZ, new_size) < 0) {
+		perror("F_SETPIPE_SZ");
+		return 1;
+	}
+
+	const int final_size = fcntl(pipefd[0], F_GETPIPE_SZ);
+	if (final_size < 0) {
+		perror("Second F_GETPIPE_SZ");
+		return 1;
+	}
+
+	if (final_size < new_size) {
+		fprintf(stderr, "Unexpected final pipe size: %d\n", final_size);
+		return 1;
+	}
+#else
+	printf("Host too old for F_GETPIPE_SZ and F_SETPIPE_SZ tests\n");
+#endif
+	return 0;
+}
+
+int main()
+{
+	int result = 0;
+	result += test_pipe_sz();
+	return result;
+}