[Qemu-devel] three small patches

[Mark Jonckheere <mark.jonckheere@easynet.be>]

These patches are against current (17-7-2004) CVS.

Patch 1:
--------
This patch makes it possible to compile vmdk.c with the infamous
RedHat-only gcc-2.96. This version of gcc doesn't like data
declarations in the middle of a code block.


diff -ur qemu/vmdk2raw.c qemu-patched/vmdk2raw.c
--- qemu.old/vmdk2raw.c Wed Jun 16 22:34:33 2004
+++ qemu/vmdk2raw.c     Sat Jun 26 14:33:03 2004
@@ -129,10 +129,11 @@
      /* the last chunk of the file can not be sparse
       * or the file will be truncated */
      if (offset + length >= disk_limit) {
+        const char nil = 0;
+
          if (lseek64(out_fd, length-1, SEEK_CUR) == (off_t)-1)
              perror("lseek");
          /* write the last NULL byte instead of seeking */
-        const char nil = 0;
          write(out_fd, &nil, 1);
      } else {
          if (lseek64(out_fd, length, SEEK_CUR) == (off_t)-1)
@@ -186,12 +187,13 @@
  static int open_vmdk(const char *filename)
  {
      int fd = open(filename, O_RDONLY | O_LARGEFILE);
+    char magic[4];
+
      if (fd == -1) {
          perror(filename);
          return -1;
      }

-    char magic[4];
      if (read(fd, &magic, sizeof(magic)) != sizeof(magic)) {
          perror("read from disk");
          return -1;


Patch 2:
--------
This patch enables qemu to run as a background process. It
initialises the current terminal only when serial- or monitor-I/O
is redirected to stdin/stdout or when -nographic is selected.
The program stops in the term_init() function when launched
as a background process.

examples:
   qemu -hda disk.img &
   xinit /usr/local/bin/qemu -hda disk.img -- :1 &

The second example launches qemu with a second X server and permits
to switch between host and guest operating systems using ctrl-alt-F7
and ctrl-alt-F8.


diff -ur qemu/vl.c qemu-patched/vl.c
--- qemu/vl.c	Wed Jul 14 19:27:31 2004
+++ qemu-patched/vl.c	Tue Jul 20 12:55:46 2004
@@ -3112,7 +3112,9 @@
      {
          vm_start();
      }
-    term_init();
+    /* Change terminal settings only if stdin/out is used */
+    if (client_index > 0)
+        term_init();
      main_loop();
      quit_timers();
      return 0;


Patch 3:
--------
This patch is an extention to the previous one. Next to enable
running in background mode It adds the command line option
-full-screen which permits to start qemu immediatly in full
screen mode. Note: the trick to make sure grab is on at
startup is non-optimal.

examples:
   qemu -hda disk.img -full-screen &
   xinit /usr/local/bin/qemu -hda disk.img -full-screen -- :1 &

The second example launches qemu with a second X server using
the screen resolution as requested by the guest operating system
It permits to switch between host and guest operating systems
using ctrl-alt-F7 and ctrl-alt-F8.


diff -ur qemu/sdl.c qemu-patched/sdl.c
--- qemu/sdl.c  Wed Jul 14 19:22:33 2004
+++ qemu-patched/sdl.c  Tue Jul 20 17:09:21 2004
@@ -45,6 +45,10 @@
  {
      //    printf("updating x=%d y=%d w=%d h=%d\n", x, y, w, h);
      SDL_UpdateRect(screen, x, y, w, h);
+    /* FIXME: next two lines are a quick fix, to make
+     * sure grab is always on in fullscreen mode */
+    if (gui_fullscreen)
+        sdl_grab_start();
  }

  static void sdl_resize(DisplayState *ds, int w, int h)
@@ -540,7 +544,7 @@
      SDL_Quit();
  }

-void sdl_display_init(DisplayState *ds)
+void sdl_display_init(DisplayState *ds, int full)
  {
      int flags;

@@ -566,4 +570,8 @@
      gui_grab = 0;

      atexit(sdl_cleanup);
+
+    if (full) {
+        gui_fullscreen = 1;
+    }
  }
diff -ur qemu/vl.c qemu-patched/vl.c
--- qemu/vl.c   Wed Jul 14 19:27:31 2004
+++ qemu-patched/vl.c   Tue Jul 20 14:00:22 2004
@@ -138,6 +138,7 @@
  int graphic_width = 800;
  int graphic_height = 600;
  int graphic_depth = 15;
+int full_screen = 0;
  TextConsole *vga_console;

  /***********************************************************/
@@ -2440,6 +2441,7 @@
@@ -2440,6 +2441,7 @@
      QEMU_OPTION_std_vga,
      QEMU_OPTION_monitor,
      QEMU_OPTION_serial,
+    QEMU_OPTION_full_screen,
  };

  typedef struct QEMUOption {
@@ -2493,6 +2495,7 @@
      { "std-vga", 0, QEMU_OPTION_std_vga },
      { "monitor", 1, QEMU_OPTION_monitor },
      { "serial", 1, QEMU_OPTION_serial },
+    { "full-screen", 0, QEMU_OPTION_full_screen },

      /* temporary options */
      { "pci", 0, QEMU_OPTION_pci },
@@ -2832,6 +2835,9 @@
              case QEMU_OPTION_serial:
                  pstrcpy(serial_device, sizeof(serial_device), optarg);
                  break;
+            case QEMU_OPTION_full_screen:
+                full_screen = 1;
+               break;
              }
          }
      }
@@ -3015,7 +3021,7 @@
          dumb_display_init(ds);
      } else {
  #ifdef CONFIG_SDL
-        sdl_display_init(ds);
+        sdl_display_init(ds, full_screen);
  #else
          dumb_display_init(ds);
  #endif
@@ -3112,7 +3118,9 @@
      {
          vm_start();
      }
-    term_init();
+    /* Change terminal settings only if stdin/out is used */
+    if (client_index > 0)
+        term_init();
      main_loop();
      quit_timers();
      return 0;
diff -ur qemu/vl.h qemu-patched/vl.h
--- qemu/vl.h   Wed Jul 14 19:27:33 2004
+++ qemu-patched/vl.h   Tue Jul 20 14:04:09 2004
@@ -629,7 +629,7 @@
                           unsigned long vga_ram_offset, int vga_ram_size);

  /* sdl.c */
-void sdl_display_init(DisplayState *ds);
+void sdl_display_init(DisplayState *ds, int full);

  /* ide.c */
  #define MAX_DISKS 4


vriendelijke groeten,
Mark.
-- 
:wq