Initial source

1 files changed, 85 insertions, 0 deletions

diff --git a/i386/dos/dos_io.h b/i386/dos/dos_io.h
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+/* 
+ * Copyright (c) 1995-1994 The University of Utah and
+ * the Computer Systems Laboratory at the University of Utah (CSL).
+ * All rights reserved.
+ *
+ * Permission to use, copy, modify and distribute this software is hereby
+ * granted provided that (1) source code retains these copyright, permission,
+ * and disclaimer notices, and (2) redistributions including binaries
+ * reproduce the notices in supporting documentation, and (3) all advertising
+ * materials mentioning features or use of this software display the following
+ * acknowledgement: ``This product includes software developed by the
+ * Computer Systems Laboratory at the University of Utah.''
+ *
+ * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
+ * IS" CONDITION.  THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
+ * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ *
+ * CSL requests users of this software to return to csl-dist@cs.utah.edu any
+ * improvements that they make and grant CSL redistribution rights.
+ *
+ *      Author: Bryan Ford, University of Utah CSL
+ */
+#ifndef _i386_kernel_dos_dos_io_h_
+#define _i386_kernel_dos_dos_io_h_
+
+#include <mach/machine/vm_types.h>
+
+#include "real.h"
+#include "debug.h"
+
+struct stat;
+struct timeval;
+struct timezone;
+struct termios;
+
+typedef int dos_fd_t;
+
+/* Maximum number of bytes we can read or write with one DOS call
+   to or from memory not in the low 1MB accessible to DOS.
+   Must be less than 64KB.
+   Try to keep this size on a sector (512-byte) boundary for performance.  */
+#ifndef DOS_BUF_SIZE
+#define DOS_BUF_SIZE 0x1000
+#endif
+
+/* If DOS_BUF_DYNAMIC is set, then dos_buf is a pointer
+   which must be provided and initialized by calling code.
+   Otherwise, the dos_buf is a statically-allocated bss array.  */
+#ifdef DOS_BUF_DYNAMIC
+extern char *dos_buf;
+#else
+extern char dos_buf[DOS_BUF_SIZE];
+#endif
+
+int dos_check_err(struct real_call_data *rcd);
+
+int dos_open(const char *s, int flags, int create_mode, dos_fd_t *out_fh);
+int dos_close(dos_fd_t fd);
+int dos_read(dos_fd_t fd, void *buf, vm_size_t size, vm_size_t *out_actual);
+int dos_write(dos_fd_t fd, const void *buf, vm_size_t size, vm_size_t *out_actual);
+int dos_seek(dos_fd_t fd, vm_offset_t offset, int whence, vm_offset_t *out_newpos);
+int dos_fstat(dos_fd_t fd, struct stat *st);
+int dos_tcgetattr(dos_fd_t fd, struct termios *t);
+int dos_rename(const char *oldpath, const char *newpath);
+int dos_unlink(const char *filename);
+
+int dos_gettimeofday(struct timeval *tv, struct timezone *tz);
+
+#define dos_init_rcd(rcd) real_call_data_init(rcd)
+
+#define real_set_ds_dx(ptr)				\
+	({ unsigned ofs = (unsigned)(ptr);		\
+	   assert(ofs < 0x10000);			\
+	   real_call_data.ds = real_cs;			\
+	   real_call_data.edx = ofs;			\
+	})
+#define real_set_es_di(ptr)				\
+	({ unsigned ofs = (unsigned)(ptr);		\
+	   assert(ofs < 0x10000);			\
+	   real_call_data.es = real_cs;			\
+	   real_call_data.edi = ofs;			\
+	})
+
+
+#endif _i386_kernel_dos_dos_io_h_