Split DOS code in several files.

setter/src/dos/os.c

@@ -0,0 +1,88 @@
+/****************************************************************************
+Aaru Data Preservation Suite
+-----------------------------------------------------------------------------
+
+Filename       : dos.c
+Author(s)      : Natalia Portillo
+
+--[ Description ] -----------------------------------------------------------
+
+Contains DOS code
+
+--[ License ] ---------------------------------------------------------------
+     This program is free software: you can redistribute it and/or modify
+     it under the terms of the GNU General Public License as
+     published by the Free Software Foundation, either version 3 of the
+     License, or (at your option) any later version.
+
+     This program is distributed in the hope that it will be useful,
+     but WITHOUT ANY WARRANTY; without even the implied warranty of
+     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+     GNU General Public License for more details.
+
+     You should have received a copy of the GNU General Public License
+     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+-----------------------------------------------------------------------------
+Copyright (C) 2011-2021 Natalia Portillo
+*****************************************************************************/
+
+#if defined(__DOS__) || defined(MSDOS)
+
+#include <direct.h>
+#include <dos.h>
+#include <i86.h>
+#include <io.h>
+#include <malloc.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "dos.h"
+
+#include "../include/consts.h"
+#include "../include/defs.h"
+#include "../include/dosos2.h"
+
+void GetOsInfo()
+{
+    union REGS    regs;
+    unsigned char major, minor;
+
+    regs.w.ax = 0x3306;
+
+    int86(0x21, &regs, &regs);
+
+    if(regs.h.al == 0xFF || (regs.w.ax == 0x1 && regs.w.cflag))
+    {
+        memset(&regs, 0, sizeof(regs));
+        regs.w.ax = 0x3000;
+        int86(0x21, &regs, &regs);
+        major = regs.h.al;
+        minor = regs.h.ah;
+    }
+    else
+    {
+        major = regs.h.bl;
+        minor = regs.h.bh;
+    }
+
+    if(major == 10 || major == 20)
+    {
+        printf("Will not run under OS/2. Exiting...\n");
+        exit(1);
+    }
+
+    if(major == 5 && minor == 50)
+    {
+        printf("Will not run under Windows NT. Exiting...\n");
+        exit(1);
+    }
+
+    if(major == 0) major = 1;
+
+    printf("OS information:\n");
+    printf("\tRunning under DOS %d.%d\n", major, minor);
+}
+
+#endif