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-rw-r--r--cpukit/libcsupport/include/rtems/libio.h101
1 files changed, 101 insertions, 0 deletions
diff --git a/cpukit/libcsupport/include/rtems/libio.h b/cpukit/libcsupport/include/rtems/libio.h
new file mode 100644
index 0000000000..f80a1954a3
--- /dev/null
+++ b/cpukit/libcsupport/include/rtems/libio.h
@@ -0,0 +1,101 @@
+/*
+ * @(#)libio.h 1.1 - 95/06/02
+ *
+ *
+ * General purpose communication channel for RTEMS to allow UNIX/POSIX
+ * system call behavior on top of RTEMS IO devices.
+ *
+ * TODO
+ * stat(2)
+ * unlink(2)
+ * rename(2)
+ *
+ * $Id$
+ */
+
+#ifndef _RTEMS_LIBIO_H
+#define _RTEMS_LIBIO_H
+
+typedef unsigned32 rtems_libio_offset_t;
+
+/*
+ * An open file data structure, indexed by 'fd'
+ * TODO:
+ * should really have a separate per/file data structure that this
+ * points to (eg: size, offset, driver, pathname should be in that)
+ */
+
+typedef struct {
+ rtems_driver_name_t *driver;
+ rtems_libio_offset_t size; /* size of file */
+ rtems_libio_offset_t offset; /* current offset into the file */
+ unsigned32 flags;
+ char *pathname; /* opened pathname */
+ Objects_Id sem;
+ unsigned32 data0; /* private to "driver" */
+ unsigned32 data1; /* ... */
+} rtems_libio_t;
+
+
+/*
+ * param block for read/write
+ * Note: it must include 'offset' instead of using iop's offset since
+ * we can have multiple outstanding i/o's on a device.
+ */
+
+typedef struct {
+ rtems_libio_t *iop;
+ rtems_libio_offset_t offset;
+ unsigned8 *buffer;
+ unsigned32 count;
+ unsigned32 flags;
+ unsigned32 bytes_moved;
+} rtems_libio_rw_args_t;
+
+/*
+ * param block for open/close
+ */
+
+typedef struct {
+ rtems_libio_t *iop;
+ unsigned32 flags;
+ unsigned32 mode;
+} rtems_libio_open_close_args_t;
+
+/*
+ * param block for ioctl
+ */
+
+typedef struct {
+ rtems_libio_t *iop;
+ unsigned32 command;
+ void *buffer;
+ unsigned32 ioctl_return;
+} rtems_libio_ioctl_args_t;
+
+
+/*
+ * Values for 'flag'
+ */
+
+#define LIBIO_FLAGS_NO_DELAY 0x0001 /* return immediately if no data */
+#define LIBIO_FLAGS_READ 0x0002 /* reading */
+#define LIBIO_FLAGS_WRITE 0x0004 /* writing */
+#define LIBIO_FLAGS_LINE_BUFFERED 0x0008 /* line buffered io (^h, ^u, etc) */
+#define LIBIO_FLAGS_OPEN 0x0100 /* device is open */
+#define LIBIO_FLAGS_APPEND 0x0200 /* all writes append */
+#define LIBIO_FLAGS_CREATE 0x0400 /* create file */
+
+#define LIBIO_FLAGS_READ_WRITE (LIBIO_FLAGS_READ | LIBIO_FLAGS_WRITE)
+
+void rtems_libio_config(rtems_configuration_table *config, unsigned32 max_fds);
+void rtems_libio_init(void);
+
+int __open(const char *pathname, unsigned32 flag, unsigned32 mode);
+int __close(int fd);
+int __read(int fd, void *buffer, unsigned32 count);
+int __write(int fd, const void *buffer, unsigned32 count);
+int __ioctl(int fd, unsigned32 command, void *buffer);
+int __lseek(int fd, rtems_libio_offset_t offset, int whence);
+
+#endif /* _RTEMS_LIBIO_H */