small little patch to help fdisk work properly on 64-bit machines.
sizeof(Table) is 4 bytes too big.

Reference: /n/sources/patch/applied/fdisk-64-bit-table
Date: Sun Oct 13 19:26:42 CES 2013
Signed-off-by: quanstro@quanstro.net

--- /sys/src/cmd/disk/prep/fdisk.c	Sun Oct 13 19:26:07 2013
+++ /sys/src/cmd/disk/prep/fdisk.c	Sun Oct 13 19:26:06 2013
@@ -232,7 +232,7 @@
 	TypeAMOEBA	= 0x93,
 	TypeAMOEBABB	= 0x94,
 	TypeBSD386	= 0xA5,
-	TypeNETBSD	= 0XA9,
+	TypeNETBSD	= 0xA9,
 	TypeBSDI	= 0xB7,
 	TypeBSDISWAP	= 0xB8,
 	TypeOTHER	= 0xDA,
@@ -240,6 +240,8 @@
 	TypeDellRecovery= 0xDE,
 	TypeSPEEDSTOR12	= 0xE1,
 	TypeSPEEDSTOR16	= 0xE4,
+	TypeEFIProtect	= 0xEE,
+	TypeEFI		= 0xEF,
 	TypeLANSTEP	= 0xFE,
 
 	Type9		= 0x39,
@@ -247,6 +249,8 @@
 	Toffset		= 446,		/* offset of partition table in sector */
 	Magic0		= 0x55,
 	Magic1		= 0xAA,
+
+	Tablesize	= 4*16 + 2,
 };
 
 struct Table {
@@ -318,6 +322,8 @@
 	[TypeDellRecovery]	{ "DELLRECOVERY", "dell" },
 	[TypeSPEEDSTOR12]	{ "SPEEDSTOR12", "speedstor" },
 	[TypeSPEEDSTOR16]	{ "SPEEDSTOR16", "speedstor" },
+	[TypeEFIProtect]		{ "EFIPROTECT", "efiprotect" },
+	[TypeEFI]		{ "EFI", "efi" },
 	[TypeLANSTEP]		{ "LANSTEP", "lanstep" },
 
 	[Type9]			{ "PLAN9", "plan9" },
@@ -446,7 +452,7 @@
 
 	err = 0;
 	for(i=0; i<nrtab; i++)
-		if(diskwrite(edit->disk, &rtab[i].table, sizeof(Table), rtab[i].lba, Toffset) < 0)
+		if(diskwrite(edit->disk, &rtab[i].table, Tablesize, rtab[i].lba, Toffset) < 0)
 			err = 1;
 	if(err) {
 		fprint(2, "warning: some writes failed during restoration of old partition tables\n");
@@ -491,7 +497,7 @@
 	if(xbase == 0)
 		xbase = lba;
 
-	diskread(edit->disk, &table, sizeof table, mbroffset+lba, Toffset);
+	diskread(edit->disk, &table, Tablesize, mbroffset+lba, Toffset);
 	addrecover(table, mbroffset+lba);
 
 	if(table.magic[0] != Magic0 || table.magic[1] != Magic1) {
@@ -529,7 +535,7 @@
 	Table table;
 	Tentry *tp;
 
-	diskread(edit->disk, &table, sizeof(Table), 0, Toffset);
+	diskread(edit->disk, &table, Tablesize, 0, Toffset);
 	if(table.magic[0] != Magic0 || table.magic[1] != Magic1)
 		sysfatal("did not find master boot record");
 
@@ -1012,7 +1018,7 @@
 	Finish:
 		if(startlba < *endlba){
 			disk = edit->disk;
-			diskread(disk, &table, sizeof table, mbroffset+startlba, Toffset);
+			diskread(disk, &table, Tablesize, mbroffset+startlba, Toffset);
 			tp = table.entry;
 			ep = tp+NTentry;
 			for(; tp<ep; tp++)
@@ -1020,7 +1026,7 @@
 			table.magic[0] = Magic0;
 			table.magic[1] = Magic1;
 
-			if(diskwrite(edit->disk, &table, sizeof table, mbroffset+startlba, Toffset) < 0)
+			if(diskwrite(edit->disk, &table, Tablesize, mbroffset+startlba, Toffset) < 0)
 				recover(edit);
 		}
 		return i;
@@ -1033,7 +1039,7 @@
 	}
 
 	disk = edit->disk;
-	diskread(disk, &table, sizeof table, mbroffset+startlba, Toffset);
+	diskread(disk, &table, Tablesize, mbroffset+startlba, Toffset);
 	tp = table.entry;
 	ep = tp+NTentry;
 
@@ -1055,7 +1061,7 @@
 	table.magic[0] = Magic0;
 	table.magic[1] = Magic1;
 
-	if(diskwrite(edit->disk, &table, sizeof table, mbroffset+startlba, Toffset) < 0)
+	if(diskwrite(edit->disk, &table, Tablesize, mbroffset+startlba, Toffset) < 0)
 		recover(edit);
 	return ni;
 }	
@@ -1072,7 +1078,7 @@
 
 	disk = edit->disk;
 
-	diskread(disk, &table, sizeof table, mbroffset, Toffset);
+	diskread(disk, &table, Tablesize, mbroffset, Toffset);
 
 	tp = table.entry;
 	ep = tp+NTentry;
@@ -1105,7 +1111,7 @@
 	if(i != edit->npart)
 		sysfatal("cannot happen #1");
 
-	if(diskwrite(disk, &table, sizeof table, mbroffset, Toffset) < 0)
+	if(diskwrite(disk, &table, Tablesize, mbroffset, Toffset) < 0)
 		recover(edit);
 
 	/* bring parts up to date */