[*] Initial commit

lonetix/stm.c

@@ -0,0 +1,67 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
+
+/**
+ * \file stm.c
+ *
+ * Common `StmOps`implementation over `Fildes`.
+ *
+ * \copyright The DoubleFourteen Code Forge (C) All Rights Reserved
+ * \author    Lorenzo Cogotti
+ */
+
+#include "stm.h"
+
+#include "sys/fs.h"
+
+#define STM_TOFILDES(fd) ((Fildes) ((Sintptr) (fd)))
+
+static Sint64 Stm_Fread(void *streamp, void *buf, size_t nbytes)
+{
+	return Sys_Fread(STM_TOFILDES(streamp), buf, nbytes);
+}
+
+static Sint64 Stm_Fwrite(void *streamp, const void *buf, size_t nbytes)
+{
+	return Sys_Fwrite(STM_TOFILDES(streamp), buf, nbytes);
+}
+
+static Sint64 Stm_Fseek(void *streamp, Sint64 off, SeekMode whence)
+{
+	return Sys_Fseek(STM_TOFILDES(streamp), off, whence);
+}
+
+static Sint64 Stm_Ftell(void *streamp)
+{
+	return Sys_Ftell(STM_TOFILDES(streamp));
+}
+
+static Judgement Stm_Fsync(void *streamp)
+{
+	return Sys_Fsync(STM_TOFILDES(streamp), /*fullSync=*/TRUE);
+}
+
+static void Stm_Fclose(void *streamp)
+{
+	Sys_Fclose(STM_TOFILDES(streamp));
+}
+
+static const StmOps fildes_ops = {
+	Stm_Fread,
+	Stm_Fwrite,
+	Stm_Fseek,
+	Stm_Ftell,
+	Stm_Fsync,
+	Stm_Fclose
+};
+
+static const StmOps nc_fildes_ops = {
+	Stm_Fread,
+	Stm_Fwrite,
+	Stm_Fseek,
+	Stm_Ftell,
+	Stm_Fsync,
+	NULL
+};
+
+const StmOps *const Stm_FildesOps   = &fildes_ops;
+const StmOps *const Stm_NcFildesOps = &nc_fildes_ops;