First implementation of new error reporting API.

git-svn-id: svn://svn.linux1394.org/libraw1394/trunk@49 53a565d1-3bb7-0310-b661-cf11e63c67ab

1 files changed, 88 insertions, 0 deletions

diff --git a/src/errors.c b/src/errors.c
new file mode 100644
index 0000000..a81c0ea
--- /dev/null
+++ b/src/errors.c
@@ -0,0 +1,88 @@
+/*
+ * libraw1394 - library for raw access to the 1394 bus with the Linux subsystem.
+ *
+ * Copyright (C) 1999,2000 Andreas Bombe
+ *
+ * This library is licensed under the GNU Lesser General Public License (LGPL),
+ * version 2.1 or later. See the file COPYING.LIB in the distribution for
+ * details.
+ */
+
+#include <config.h>
+#include <errno.h>
+
+#include "raw1394.h"
+#include "kernel-raw1394.h"
+#include "raw1394_private.h"
+
+raw1394_errcode_t raw1394_get_errcode(struct raw1394_handle *handle)
+{
+        return handle->err;
+}
+
+int raw1394_errcode_to_errno(raw1394_errcode_t errcode)
+{
+        static const int ack2errno[16] = {
+                0xdead,    /* invalid ack code */
+                0,         /* ack_complete */
+                0xdead,    /* ack_pending, should not be used here */
+                EAGAIN,    /* busy_x, busy_a and busy_b acks */
+                EAGAIN,
+                EAGAIN,
+                0xdead,    /* invalid ack codes */
+                0xdead,
+                0xdead,
+                0xdead,
+                0xdead,
+                0xdead,
+                0xdead,
+                EREMOTEIO, /* ack_data_error */
+                EPERM,     /* ack_type_error */
+                0xdead     /* invalid ack code */
+        };
+        static const int rcode2errno[16] = {
+                0,         /* rcode_complete */
+                0xdead,    /* invalid rcodes */
+                0xdead,
+                0xdead,
+                EAGAIN,    /* rcode_conflict_error */
+                EREMOTEIO, /* rcode_data_error */
+                EPERM,     /* rcode_type_error */
+                EINVAL,    /* rcode_address_error */
+                0xdead,    /* invalid rcodes */
+                0xdead,
+                0xdead,
+                0xdead,
+                0xdead,
+                0xdead,
+                0xdead,
+                0xdead
+        };
+
+        if (!raw1394_internal_err(errcode)) {
+                if (raw1394_get_ack(errcode) == L1394_ACK_PENDING)
+                        return rcode2errno[raw1394_get_rcode(errcode)];
+                else
+                        return ack2errno[raw1394_get_ack(errcode)];
+        }
+
+        switch (raw1394_get_internal(errcode)) {
+        case RAW1394_ERROR_GENERATION:
+        case RAW1394_ERROR_SEND_ERROR:
+        case RAW1394_ERROR_ABORTED:
+        case RAW1394_ERROR_TIMEOUT:
+                return EAGAIN;
+
+        case RAW1394_ERROR_MEMFAULT:
+                return EFAULT;
+
+        case RAW1394_ERROR_COMPAT:
+        case RAW1394_ERROR_STATE_ORDER:
+        case RAW1394_ERROR_INVALID_ARG:
+        case RAW1394_ERROR_ALREADY:
+        case RAW1394_ERROR_EXCESSIVE:
+        case RAW1394_ERROR_UNTIDY_LEN:
+        default:
+                return EINVAL;
+        }
+}