From 4fd4e8d35753f9d145b902985d8bd75e54efca63 Mon Sep 17 00:00:00 2001
From: Matthias Koenig <mkoenig@suse.de>
Date: Tue, 17 Jul 2007 18:07:11 +0200
Subject: [PATCH] fdisk: add support for udev persistent device names

udev names partitions with the extension "-partN" (where N is a
partition number).

Signed-off-by: Matthias Koenig <mkoenig@suse.de>
---
 fdisk/common.h   | 4 ++++
 fdisk/partname.c | 7 +++++++
 2 files changed, 11 insertions(+)

diff --git a/fdisk/common.h b/fdisk/common.h
index 71eecc4e..cc5a04cd 100644
--- a/fdisk/common.h
+++ b/fdisk/common.h
@@ -3,6 +3,10 @@
 
 /* common stuff for fdisk, cfdisk, sfdisk */
 
+/* udev paths */
+#define PATH_DEV_BYID   "/dev/disk/by-id"
+#define PATH_DEV_BYPATH "/dev/disk/by-path"
+
 /* including <linux/fs.h> fails */
 #include <sys/types.h>
 #include <sys/ioctl.h>
diff --git a/fdisk/partname.c b/fdisk/partname.c
index e4bc42bc..0ae058f9 100644
--- a/fdisk/partname.c
+++ b/fdisk/partname.c
@@ -30,6 +30,13 @@ partnamebf(char *dev, int pno, int lth, int bufsiz, char *bufp) {
 		p = "part";
 	}
 
+	/* udev names partitions by appending -partN
+	   e.g. ata-SAMSUNG_SV8004H_0357J1FT712448-part1 */
+	if ((strncmp(dev, PATH_DEV_BYID, strlen(PATH_DEV_BYID)) == 0) ||
+	     strncmp(dev, PATH_DEV_BYPATH, strlen(PATH_DEV_BYPATH)) == 0) {
+	       p = "-part";
+	}
+
 	wp = strlen(p);
 		
 	if (lth) {
-- 
2.39.5