From e4e1e6e4f53d942de7f5627377bd3b4adce89394 Mon Sep 17 00:00:00 2001
From: Augustin Cavalier <waddlesplash@gmail.com>
Date: Thu, 18 Aug 2022 13:57:08 -0400
Subject: [PATCH] tests: Add fifo_test.

Creates, opens, tries to open as directory, then unlinks.

The attempt to open as a directory triggers an assertion
in the kernel at present (this is #17870.) The next commit
will fix that.
---
 src/tests/system/libroot/posix/Jamfile       |  1 +
 src/tests/system/libroot/posix/fifo_test.cpp | 38 ++++++++++++++++++++
 2 files changed, 39 insertions(+)
 create mode 100644 src/tests/system/libroot/posix/fifo_test.cpp

diff --git a/src/tests/system/libroot/posix/Jamfile b/src/tests/system/libroot/posix/Jamfile
index 8974881f00..68b4cb1e2c 100644
--- a/src/tests/system/libroot/posix/Jamfile
+++ b/src/tests/system/libroot/posix/Jamfile
@@ -14,6 +14,7 @@ SimpleTest calloc_test : calloc_test.c ;
 SimpleTest <test>chmod : chmod.cpp ;
 SimpleTest clearenv : clearenv.cpp ;
 SimpleTest dirent_test : dirent_test.cpp ;
+SimpleTest fifo_test : fifo_test.cpp ;
 SimpleTest flock_test : flock_test.cpp ;
 SimpleTest fseek_test : fseek_test.cpp ;
 SimpleTest getsubopt_test : getsubopt_test.cpp ;
diff --git a/src/tests/system/libroot/posix/fifo_test.cpp b/src/tests/system/libroot/posix/fifo_test.cpp
new file mode 100644
index 0000000000..b65c661e83
--- /dev/null
+++ b/src/tests/system/libroot/posix/fifo_test.cpp
@@ -0,0 +1,38 @@
+#include <dirent.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+
+int
+main(int argc, char** argv)
+{
+	const char* filename = "temp.fifo";
+
+	if (mkfifo("temp.fifo", S_IRWXU) != 0) {
+		perror("mkfifo error");
+		return 1;
+	}
+
+	int rfd = open(filename, O_RDONLY | O_NONBLOCK);
+	if (rfd < 0) {
+		perror("open() error");
+		return 1;
+	}
+
+	DIR* dir = opendir(filename);
+	if (dir != NULL) {
+		perror("opendir succeeded");
+		return 1;
+	}
+
+	dir = fdopendir(rfd);
+	if (dir != NULL) {
+		perror("fdopendir succeeded");
+		return 1;
+	}
+
+	unlink(filename);
+	return 0;
+}