1 files changed, 124 insertions, 0 deletions
diff --git a/c/src/exec/libcsupport/include/rtems/libio.h b/c/src/exec/libcsupport/include/rtems/libio.h
new file mode 100644
index 0000000000..c79dfc2e33
--- /dev/null
+++ b/c/src/exec/libcsupport/include/rtems/libio.h
@@ -0,0 +1,124 @@
+/*
+ * 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
+
+#include <sys/stat.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 __rtems_open(const char  *pathname, unsigned32 flag, unsigned32 mode);
+int __rtems_close(int  fd);
+int __rtems_read(int fd, void *buffer, unsigned32 count);
+int __rtems_write(int fd, const void *buffer, unsigned32 count);
+int __rtems_ioctl(int fd, unsigned32  command, void *buffer);
+int __rtems_lseek(int fd, rtems_libio_offset_t offset, int whence);
+int __rtems_fstat(int _fd, struct stat* _sbuf);
+int __rtems_isatty(int _fd);
+
+/*
+ * External I/O handlers
+ */
+typedef struct {
+    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);
+} rtems_libio_handler_t;
+
+void rtems_register_libio_handler(int handler_flag,
+                                 const rtems_libio_handler_t *handler);
+
+#define RTEMS_FILE_DESCRIPTOR_TYPE_FILE         0x0000
+#define RTEMS_FILE_DESCRIPTOR_TYPE_SOCKET       0x1000
+#define rtems_make_file_descriptor(fd,flags)    ((fd)|(flags))
+#define rtems_file_descriptor_base(fd)          ((fd) & 0x0FFF)
+#define rtems_file_descriptor_type(fd)          ((fd) & 0xF000)
+#define rtems_file_descriptor_type_index(fd)    ((((fd) & 0xF000) >> 12) - 1)
+
+#endif /* _RTEMS_LIBIO_H */