1 files changed, 127 insertions, 0 deletions
diff --git a/contrib/syslinux-4.02/com32/gpllib/disk/mbrs.c b/contrib/syslinux-4.02/com32/gpllib/disk/mbrs.c
new file mode 100644
index 0000000..41bb20c
--- /dev/null
+++ b/contrib/syslinux-4.02/com32/gpllib/disk/mbrs.c
@@ -0,0 +1,127 @@
+/* ----------------------------------------------------------------------- *
+ *
+ *   Copyright 2009 Pierre-Alexandre Meyer
+ *
+ *   This file is part of Syslinux, and is made available under
+ *   the terms of the GNU General Public License version 2.
+ *
+ * ----------------------------------------------------------------------- */
+
+#include <disk/common.h>
+#include <disk/geom.h>
+#include <disk/read.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+
+/**
+ * get_mbr_string - return a string describing the boot code
+ * @label:		first four bytes of the MBR
+ * @buffer:		pre-allocated buffer
+ * @buffer_size:	@buffer size
+ **/
+void get_mbr_string(const uint32_t label, char *buffer, const int buffer_size)
+{
+    /* 2 bytes are usually enough to identify the MBR */
+    uint16_t s_label = label >> 16;
+
+    switch (s_label) {
+    case 0x0000:
+    case 0xfa33:
+    case 0xfab8:
+    case 0xfabe:
+	strlcpy(buffer, "No bootloader", buffer_size - 1);
+	break;
+    case 0x0ebe:
+	strlcpy(buffer, "ThinkPad", buffer_size - 1);
+	break;
+    case 0x31c0:
+	strlcpy(buffer, "Acer 3", buffer_size - 1);
+	break;
+    case 0x33c0:
+	strlcpy(buffer, "Windows", buffer_size - 1);
+	break;
+    case 0x33ff:
+	strlcpy(buffer, "HP/Gateway", buffer_size - 1);
+	break;
+    case 0xb800:
+	strlcpy(buffer, "PloP", buffer_size - 1);
+	break;
+    case 0xea05:
+	strlcpy(buffer, "XOSL", buffer_size - 1);
+	break;
+    case 0xea1e:
+	strlcpy(buffer, "Truecrypt Boot Loader", buffer_size - 1);
+	break;
+    case 0xeb04:
+	strlcpy(buffer, "Solaris", buffer_size - 1);
+	break;
+    case 0xeb48:
+	strlcpy(buffer, "Grub", buffer_size - 1);
+	break;
+    case 0xeb4c:
+	strlcpy(buffer, "Grub2 (v1.96)", buffer_size - 1);
+	break;
+    case 0xeb63:
+	strlcpy(buffer, "Grub2 (v1.97)", buffer_size - 1);
+	break;
+    case 0xeb5e:
+	/* We need more than 2 bytes */
+	if (((label >> 8) & 0xff) == 0x00)
+	    strlcpy(buffer, "fbinst", buffer_size - 1);
+	else if (((label >> 8) & 0xff) == 0x80)
+	    strlcpy(buffer, "Grub4Dos", buffer_size - 1);
+	else if (((label >> 8) & 0xff) == 0x90)
+	    strlcpy(buffer, "WEE", buffer_size - 1);
+	else
+	    strlcpy(buffer, "Unknown mbr", buffer_size - 1);
+	break;
+    case 0xfa31:
+	/* We need more than 2 bytes */
+	if (((label >> 8) & 0xff) == 0xc9)
+	    strlcpy(buffer, "Master Boot LoaDeR", buffer_size - 1);
+	else if (((label >> 8) & 0xff) == 0xc0)
+	    strlcpy(buffer, "Syslinux", buffer_size - 1);
+	else
+	    strlcpy(buffer, "Unknown mbr", buffer_size - 1);
+	break;
+    case 0xfaeb:
+	strlcpy(buffer, "Lilo", buffer_size - 1);
+	break;
+    case 0xfc31:
+	strlcpy(buffer, "Testdisk", buffer_size - 1);
+	break;
+    case 0xfc33:
+	strlcpy(buffer, "GAG", buffer_size - 1);
+	break;
+    case 0xfceb:
+	strlcpy(buffer, "BootIT NG", buffer_size - 1);
+	break;
+    default:
+	strlcpy(buffer, "Unknown mbr", buffer_size - 1);
+	break;
+    }
+
+    buffer[buffer_size - 1] = '\0';
+}
+
+/**
+ * get_mbr_id - return the first four bytes of the MBR
+ * @d:		driveinfo struct describing the drive
+ **/
+uint32_t get_mbr_id(const struct driveinfo *d)
+{
+    char mbr[SECTOR * sizeof(char)];
+
+    if (read_mbr(d->disk, &mbr) == -1)
+	return -1;
+    else {
+	uint32_t mbr_id;
+	/* Reverse the opcodes */
+	mbr_id = (*(uint8_t *) (mbr + 3));
+	mbr_id += (*(uint8_t *) (mbr + 2) << 8);
+	mbr_id += (*(uint8_t *) (mbr + 1) << 16);
+	mbr_id += (*(uint8_t *) mbr) << 24;
+	return mbr_id;
+    }
+}