From 50d3ac3b6faa9d117ec26296067aecee988dbd8c Mon Sep 17 00:00:00 2001
From: Brian Gianforcaro <b.gianfo@gmail.com>
Date: Tue, 21 Dec 2021 23:47:36 -0800
Subject: [PATCH 2/4] Port: fio - Add SerenityOS platform support

---
 os/os-serenity.h | 87 ++++++++++++++++++++++++++++++++++++++++++++++++
 os/os.h          |  3 ++
 2 files changed, 90 insertions(+)
 create mode 100644 os/os-serenity.h

diff --git a/os/os-serenity.h b/os/os-serenity.h
new file mode 100644
index 0000000..941bf09
--- /dev/null
+++ b/os/os-serenity.h
@@ -0,0 +1,87 @@
+#ifndef FIO_OS_SERENITY_H
+#define FIO_OS_SERENITY_H
+
+#define	FIO_OS	os_serenity
+
+#include <sys/param.h>
+#include <sys/statvfs.h>
+#include <sys/utsname.h>
+#include <sys/mman.h>
+#include <sys/select.h>
+#include <netinet/in.h>
+
+#include "../file.h"
+
+#define FIO_NO_HAVE_SHM_H
+#define FIO_USE_GENERIC_INIT_RANDOM_STATE
+#define FIO_HAVE_FS_STAT
+#define FIO_HAVE_GETTID
+
+#define OS_MAP_ANON		MAP_ANON
+
+/* Serenity doesn't support:
+ *  - MADV_RANDOM
+ *  - MADV_SEQUENTIAL
+ *
+ * So any values will work for these defines.
+ */
+#ifndef POSIX_MADV_RANDOM
+#define POSIX_MADV_RANDOM 0
+#endif
+
+#ifndef POSIX_MADV_SEQUENTIAL
+#define POSIX_MADV_SEQUENTIAL 0
+#endif
+
+/*
+ * Serenity doesn't have O_SYNC, so define it here so it can be
+ * rejected at runtime instead.
+ */
+#define O_SYNC		0x2000000
+
+static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes)
+{
+	// TODO: Implement
+	return ENOTSUP;
+}
+
+static inline int blockdev_invalidate_cache(struct fio_file *f)
+{
+	// TODO: Implement
+	return ENOTSUP;
+}
+
+static inline unsigned long long os_phys_mem(void)
+{
+	// TODO: Implement
+	return 0; 
+}
+
+static inline int nice(int incr)
+{
+	// TODO: Implement
+	return 0;
+}
+
+static inline unsigned long long get_fs_free_size(const char *path)
+{
+	unsigned long long ret;
+	struct statvfs s;
+
+	if (statvfs(path, &s) < 0)
+		return -1ULL;
+
+	ret = s.f_frsize;
+	ret *= (unsigned long long) s.f_bfree;
+	return ret;
+}
+
+static inline in_addr_t inet_network(const char *cp)
+{
+	in_addr_t hbo;
+	in_addr_t nbo = inet_addr(cp);
+	hbo = ((nbo & 0xFF) << 24) + ((nbo & 0xFF00) << 8) + ((nbo & 0xFF0000) >> 8) + ((nbo & 0xFF000000) >> 24);
+	return hbo;
+}
+
+#endif
diff --git a/os/os.h b/os/os.h
index 5965d7b..46604f7 100644
--- a/os/os.h
+++ b/os/os.h
@@ -24,6 +24,7 @@ enum {
 	os_windows,
 	os_android,
 	os_dragonfly,
+	os_serenity,
 
 	os_nr,
 };
@@ -55,6 +56,8 @@ typedef enum {
 #include "os-windows.h"
 #elif defined (__DragonFly__)
 #include "os-dragonfly.h"
+#elif defined (__serenity__)
+#include "os-serenity.h"
 #else
 #error "unsupported os"
 #endif
-- 
2.32.0