libcsupport: Refactor rtems_deviceio_errno

Renames rtems_deviceio_errno to rtems_status_code_to_errno and
integrates it into the Classic API Status Handler. This function
can now be called by including status.h

2 files changed, 76 insertions, 2 deletions

diff --git a/cpukit/rtems/include/rtems/rtems/status.h b/cpukit/rtems/include/rtems/rtems/status.h
index 2761791478..89042883fb 100644
--- a/cpukit/rtems/include/rtems/rtems/status.h
+++ b/cpukit/rtems/include/rtems/rtems/status.h
@@ -217,6 +217,30 @@ RTEMS_INLINE_ROUTINE bool rtems_are_statuses_equal(
    return (code1 == code2);
 }
 
+/**
+ *  @brief RTEMS Status Code to Errno Mapping Function
+ *
+ *  This function recieves an RTEMS status code and returns an
+ *  errno error code. The retval values show the mappings between
+ *  rtems_status_codes and errno error codes.
+ *
+ *  @retval 0 RTEMS_SUCCESSFUL
+ *  @retval EIO RTEMS_TASK_EXITED, RTEMS_MP_NOT_CONFIGURED, RTEMS_INVALID_ID,
+ *   RTEMS_TOO_MANY, RTEMS_OBJECT_WAS_DELETED, RTEMS_INVALID_SIZE,
+ *   RTEMS_INVALID_ADDRESS, RTEMS_NOT_DEFINED, RTEMS_INCORRECT_STATE,
+ *   RTEMS_ILLEGAL_ON_SELF, RTEMS_ILLEGAL_ON_REMOTE_OBJECT,
+ *   RTEMS_CALLED_FROM_ISR, RTEMS_INVALID_PRIORITY, RTEMS_INTERNAL_ERROR,
+ *   RTEMS_IO_ERROR, RTEMS_PROXY_BLOCKING
+ *  @retval EINVAL RTEMS_INVALID_NAME, RTEMS_INVALID_CLOCK, RTEMS_INVALID_NODE
+ *  @retval ETIMEDOUT RTEMS_TIMEOUT
+ *  @retval EBADF RTEMS_INVALID_NUMBER
+ *  @retval EBUSY RTEMS_RESOURCE_IN_USE
+ *  @retval ENODEV RTEMS_UNSATISFIED
+ *  @retval ENOSYS RTEMS_NOT_IMPLEMENTED, RTEMS_NOT_CONFIGURED
+ *  @retval ENOMEM RTEMS_NO_MEMORY
+ */
+int rtems_status_code_to_errno(rtems_status_code sc);
+
 /**@}*/
 
 #ifdef __cplusplus
diff --git a/cpukit/rtems/src/status.c b/cpukit/rtems/src/status.c
index 1d8c4fafcc..33048c01b2 100644
--- a/cpukit/rtems/src/status.c
+++ b/cpukit/rtems/src/status.c
@@ -1,11 +1,11 @@
 /**
  *  @file
  *
- *  @brief Status Object Name Errors to Status Array
+ *  @brief Status Mapping Arrays
  *  @ingroup ClassicStatus
  */
 
-/*  COPYRIGHT (c) 1989-2008.
+/*  COPYRIGHT (c) 1989-2013.
  *  On-Line Applications Research Corporation (OAR).
  *
  *  The license and distribution terms for this file may be
@@ -14,6 +14,7 @@
  */
 
 #include <rtems/rtems/statusimpl.h>
+#include <errno.h>
 
 const rtems_status_code _Status_Object_name_errors_to_status[] = {
   /** This maps OBJECTS_SUCCESSFUL to RTEMS_SUCCESSFUL. */
@@ -27,3 +28,52 @@ const rtems_status_code _Status_Object_name_errors_to_status[] = {
   /** This maps OBJECTS_INVALID_NODE to RTEMS_INVALID_NODE. */
   RTEMS_INVALID_NODE
 };
+
+static const int status_code_to_errno [RTEMS_STATUS_CODES_LAST + 1] = {
+  [RTEMS_SUCCESSFUL]               = 0,
+  [RTEMS_TASK_EXITTED]             = EIO,
+  [RTEMS_MP_NOT_CONFIGURED]        = EIO,
+  [RTEMS_INVALID_NAME]             = EINVAL,
+  [RTEMS_INVALID_ID]               = EIO,
+  [RTEMS_TOO_MANY]                 = EIO,
+  [RTEMS_TIMEOUT]                  = ETIMEDOUT,
+  [RTEMS_OBJECT_WAS_DELETED]       = EIO,
+  [RTEMS_INVALID_SIZE]             = EIO,
+  [RTEMS_INVALID_ADDRESS]          = EIO,
+  [RTEMS_INVALID_NUMBER]           = EBADF,
+  [RTEMS_NOT_DEFINED]              = EIO,
+  [RTEMS_RESOURCE_IN_USE]          = EBUSY,
+  [RTEMS_UNSATISFIED]              = ENODEV,
+  [RTEMS_INCORRECT_STATE]          = EIO,
+  [RTEMS_ALREADY_SUSPENDED]        = EIO,
+  [RTEMS_ILLEGAL_ON_SELF]          = EIO,
+  [RTEMS_ILLEGAL_ON_REMOTE_OBJECT] = EIO,
+  [RTEMS_CALLED_FROM_ISR]          = EIO,
+  [RTEMS_INVALID_PRIORITY]         = EIO,
+  [RTEMS_INVALID_CLOCK]            = EINVAL,
+  [RTEMS_INVALID_NODE]             = EINVAL,
+  [RTEMS_NOT_CONFIGURED]           = ENOSYS,
+  [RTEMS_NOT_OWNER_OF_RESOURCE]    = EPERM,
+  [RTEMS_NOT_IMPLEMENTED]          = ENOSYS,
+  [RTEMS_INTERNAL_ERROR]           = EIO,
+  [RTEMS_NO_MEMORY]                = ENOMEM,
+  [RTEMS_IO_ERROR]                 = EIO,
+  [RTEMS_PROXY_BLOCKING]           = EIO
+};
+
+int rtems_status_code_to_errno(rtems_status_code sc)
+{
+  if (sc == RTEMS_SUCCESSFUL) {
+    return 0;
+  } else {
+    int eno = EINVAL;
+
+    if ((unsigned) sc <= RTEMS_STATUS_CODES_LAST) {
+      eno = status_code_to_errno [sc];
+    }
+
+    errno = eno;
+
+    return -1;
+  }
+}