From 48026bb824fd2d9cfb00ecd040db6ef3a416bae9 Mon Sep 17 00:00:00 2001
From: Clyne Sullivan <clyne@bitgloo.com>
Date: Fri, 22 Jan 2021 21:43:36 -0500
Subject: upload initial port

---
 ChibiOS_20.3.2/os/sb/host/sbposix.c | 136 ++++++++++++++++++++++++++++++++++++
 1 file changed, 136 insertions(+)
 create mode 100644 ChibiOS_20.3.2/os/sb/host/sbposix.c

(limited to 'ChibiOS_20.3.2/os/sb/host/sbposix.c')

diff --git a/ChibiOS_20.3.2/os/sb/host/sbposix.c b/ChibiOS_20.3.2/os/sb/host/sbposix.c
new file mode 100644
index 0000000..b2f6839
--- /dev/null
+++ b/ChibiOS_20.3.2/os/sb/host/sbposix.c
@@ -0,0 +1,136 @@
+/*
+    ChibiOS - Copyright (C) 2006..2019 Giovanni Di Sirio.
+
+    This file is part of ChibiOS.
+
+    ChibiOS is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    ChibiOS is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @file    sb/host/sbposix.c
+ * @brief   ARM sandbox host Posix API code.
+ *
+ * @addtogroup ARM_SANDBOX_HOSTAPI
+ * @{
+ */
+
+#include "ch.h"
+#include "sb.h"
+
+/*===========================================================================*/
+/* Module local definitions.                                                 */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Module exported variables.                                                */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Module local types.                                                       */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Module local variables.                                                   */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Module local functions.                                                   */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Module exported functions.                                                */
+/*===========================================================================*/
+
+uint32_t sb_posix_open(const char *pathname, uint32_t flags) {
+
+  (void)pathname;
+  (void)flags;
+
+  return SB_ERR_ENOENT;
+}
+
+uint32_t sb_posix_close(uint32_t fd) {
+
+  if ((fd == 0U) || (fd == 1U) || (fd == 2U)) {
+
+    return SB_ERR_NOERROR;
+  }
+
+  return SB_ERR_EBADFD;
+}
+
+uint32_t sb_posix_read(uint32_t fd, uint8_t *buf, size_t count) {
+  sb_class_t *sbcp = (sb_class_t *)chThdGetSelfX()->ctx.syscall.p;
+
+  if (!sb_is_valid_write_range(sbcp, (void *)buf, count)) {
+    return SB_ERR_EFAULT;
+  }
+
+  if (fd == 0U) {
+    SandboxStream *ssp = sbcp->config->stdin_stream;
+
+    if ((count == 0U) || (ssp == NULL)) {
+      return 0U;
+    }
+
+    return (uint32_t)ssp->vmt->read((void *)ssp, buf, count);
+  }
+
+  return SB_ERR_EBADFD;
+}
+
+uint32_t sb_posix_write(uint32_t fd, const uint8_t *buf, size_t count) {
+  sb_class_t *sbcp = (sb_class_t *)chThdGetSelfX()->ctx.syscall.p;
+
+  if (!sb_is_valid_read_range(sbcp, (const void *)buf, count)) {
+    return SB_ERR_EFAULT;
+  }
+
+  if (fd == 1U) {
+    SandboxStream *ssp = sbcp->config->stdout_stream;
+
+    if ((count == 0U) || (ssp == NULL)) {
+      return 0U;
+    }
+
+    return (uint32_t)ssp->vmt->write((void *)ssp, buf, count);
+  }
+
+  if (fd == 2U) {
+    SandboxStream *ssp = sbcp->config->stderr_stream;
+
+    if ((count == 0U) || (ssp == NULL)) {
+      return 0U;
+    }
+
+    return (uint32_t)ssp->vmt->write((void *)ssp, buf, count);
+  }
+
+  return SB_ERR_EBADFD;
+}
+
+uint32_t sb_posix_lseek(uint32_t fd, uint32_t offset, uint32_t whence) {
+
+  (void)offset;
+  (void)whence;
+
+  if ((fd == 0U) || (fd == 1U) || (fd == 2U)) {
+
+    return SB_ERR_ESPIPE;
+  }
+
+  return SB_ERR_EBADFD;
+}
+
+/** @} */
-- 
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