2006-10-27 Hollis Blanchard <hollis@penguinppc.org>

* kern/disk.c (grub_disk_open): Print debug messages when opening a
	disk.
	(grub_disk_close): Print debug messages when closing a disk.
	(grub_disk_read): Print debug messages when disk read fails.
	* kern/fs.c (grub_fs_probe): Print debug messages when detecting
	filesystem type.
	* kern/partition.c: Include misc.h.
	(grub_partition_iterate): Print debug messages when detecting
	partition type.

ChangeLog

@@ -1,3 +1,15 @@
+2006-10-27  Hollis Blanchard  <hollis@penguinppc.org>
+
+	* kern/disk.c (grub_disk_open): Print debug messages when opening a
+	disk.
+	(grub_disk_close): Print debug messages when closing a disk.
+	(grub_disk_read): Print debug messages when disk read fails.
+	* kern/fs.c (grub_fs_probe): Print debug messages when detecting
+	filesystem type.
+	* kern/partition.c: Include misc.h.
+	(grub_partition_iterate): Print debug messages when detecting
+	partition type.
+
 2006-10-27  Hollis Blanchard  <hollis@penguinppc.org>
 
 	* disk/ieee1275/ofdisk.c (grub_ofdisk_read): Return error if `status'

kern/disk.c

@@ -215,6 +215,8 @@ grub_disk_open (const char *name)
   char *raw = (char *) name;
   unsigned long current_time;
 
+  grub_dprintf ("disk", "Opening `%s'...\n", name);
+
   disk = (grub_disk_t) grub_malloc (sizeof (*disk));
   if (! disk)
     return 0;
@@ -291,6 +293,10 @@ grub_disk_open (const char *name)
 
   if (grub_errno != GRUB_ERR_NONE)
     {
+      grub_error_push ();
+      grub_dprintf ("disk", "Opening `%s' failed.\n", name);
+      grub_error_pop ();
+
       grub_disk_close (disk);
       return 0;
     }
@@ -301,6 +307,8 @@ grub_disk_open (const char *name)
 void
 grub_disk_close (grub_disk_t disk)
 {
+  grub_dprintf ("disk", "Closing `%s'.\n", disk->name);
+
   if (disk->dev && disk->dev->close)
     (disk->dev->close) (disk);
 
@@ -353,7 +361,12 @@ grub_disk_read (grub_disk_t disk, grub_disk_addr_t sector,
   
   /* First of all, check if the region is within the disk.  */
   if (grub_disk_check_range (disk, &sector, &offset, size) != GRUB_ERR_NONE)
+    {
+      grub_error_push ();
+      grub_dprintf ("disk", "Read out of range: sector 0x%lx.\n", sector);
+      grub_error_pop ();
       return grub_errno;
+    }
 
   real_offset = offset;
   
@@ -406,7 +419,12 @@ grub_disk_read (grub_disk_t disk, grub_disk_addr_t sector,
 	      num = ((size + GRUB_DISK_SECTOR_SIZE - 1)
 		     >> GRUB_DISK_SECTOR_BITS);
 	      if ((disk->dev->read) (disk, sector, num, tmp_buf))
+		{
+		  grub_error_push ();
+		  grub_dprintf ("disk", "%s read failed\n", disk->name);
+		  grub_error_pop ();
 		  goto finish;
+		}
 
 	      grub_memcpy (buf, tmp_buf + real_offset, size);
 

kern/fs.c

@@ -81,10 +81,15 @@ grub_fs_probe (grub_device_t device)
 
       for (p = grub_fs_list; p; p = p->next)
 	{
+	  grub_dprintf ("fs", "Detecting %s...\n", p->name);
 	  (p->dir) (device, "/", dummy_func);
 	  if (grub_errno == GRUB_ERR_NONE)
 	    return p;
 
+	  grub_error_push ();
+	  grub_dprintf ("fs", "%s detection failed.\n", p->name);
+	  grub_error_pop ();
+
 	  if (grub_errno != GRUB_ERR_BAD_FS)
 	    return 0;
 

kern/partition.c

@@ -17,6 +17,7 @@
  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
+#include <grub/misc.h>
 #include <grub/partition.h>
 #include <grub/disk.h>
 
@@ -103,15 +104,20 @@ grub_partition_iterate (struct grub_disk *disk,
   
   int part_map_iterate (const grub_partition_map_t p)
     {
-      grub_err_t err = p->iterate (disk, part_map_iterate_hook);
+      grub_err_t err;
+
+      grub_dprintf ("partition", "Detecting %s...\n", p->name);
+      err = p->iterate (disk, part_map_iterate_hook);
 
       if (err != GRUB_ERR_NONE)
 	{
 	  /* Continue to next partition map type.  */
+	  grub_dprintf ("partition", "%s detection failed.\n", p->name);
 	  grub_errno = GRUB_ERR_NONE;
 	  return 0;
 	}
 
+      grub_dprintf ("partition", "%s detection succeeded.\n", p->name);
       partmap = p;
       return 1;
     }