1 files changed, 40 insertions, 0 deletions
diff --git a/fdopen.c b/fdopen.c
new file mode 100644
index 0000000..bbd3af7
--- /dev/null
+++ b/fdopen.c
@@ -0,0 +1,40 @@
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+
+#define TEST(r, f, x, m) ( \
+((r) = (f)) == (x) || \
+(printf(__FILE__ ":%d: %s failed (" m ")\n", __LINE__, #f, r, x), err++, 0) )
+
+#define TEST_E(f) ( (errno = 0), (f) || \
+(printf(__FILE__ ":%d: %s failed (errno = %d)\n", __LINE__, #f, errno), err++, 0) )
+
+#define TEST_S(s, x, m) ( \
+!strcmp((s),(x)) || \
+(printf(__FILE__ ":%d: [%s] != [%s] (%s)\n", __LINE__, s, x, m), err++, 0) )
+
+int test_fdopen(void)
+{
+	char tmp[] = "/tmp/testsuite-XXXXXX";
+	char foo[6];
+	int fd;
+	int err = 0;
+	FILE *f;
+
+	TEST_E((fd = mkstemp(tmp)) > 2);
+	TEST_E(write(fd, "hello", 6)==6);
+	TEST_E(f = fdopen(fd, "rb"));
+	if (f) {
+		TEST_E(ftello(f)==6);
+		TEST_E(fseeko(f, 0, SEEK_SET)==0);
+		TEST_E(fgets(foo, sizeof foo, f));
+		TEST_S(foo, "hello", "fgets read back wrong message");
+		fclose(f);
+	}
+
+	if (fd > 2) TEST_E(unlink(tmp) != -1);
+
+	return err;
+}