summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorIan Moffett <ian@osmora.org>2024-03-26 21:46:29 -0400
committerIan Moffett <ian@osmora.org>2024-03-26 21:46:29 -0400
commite9f8c899812264dbca35efd4d2373b597e3c0a27 (patch)
treeee4b2584f0a295c93d2f683ce3476a8512f10c1b
parent37eb301fea3a54502d52e9ba855e7cdc93ac808b (diff)
kernel: Add system I/O descriptor
Signed-off-by: Ian Moffett <ian@osmora.org>
-rw-r--r--sys/include/sys/sio.h57
1 files changed, 57 insertions, 0 deletions
diff --git a/sys/include/sys/sio.h b/sys/include/sys/sio.h
new file mode 100644
index 0000000..6f13a09
--- /dev/null
+++ b/sys/include/sys/sio.h
@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of Hyra nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _SIO_H_
+#define _SIO_H_
+
+#include <sys/types.h>
+
+#if defined(_KERNEL)
+enum sio_type {
+ SIO_NONE, /* None specified */
+ SIO_USER, /* Userspace related transaction */
+ SIO_KERN, /* Kernel transaction */
+};
+
+/*
+ * System I/O transaction
+ *
+ * This structure describes a system I/O transaction
+ * and contains common fields that are used
+ * with system I/O.
+ */
+struct sio_txn {
+ void *buf; /* Source/dest buffer */
+ off_t offset; /* Transfer offset */
+ size_t len; /* Length in bytes */
+ enum sio_type type; /* Transaction type */
+};
+
+#endif /* defined(_KERNEL) */
+#endif /* !_SIO_H_ */