[PATCH] Use correct partition names for /dev/mapper

[Stanislav Brabec <sbrabec@suse.cz>]

The default configuration of multipath-tools appends "-partN" to
partition nodes. Follow this conventions and do the same.

It fixes for example fdisk -l /dev/mapper/name_of_the_device.

Note that the current implementation only partially fixes the problem. It
does not reflect any udev configuration changes, as udev does not provide
any function to return names of future (or current) partitions of a
particular device. It also does not fix fdisk -l /dev/dm-0.

Signed-off-by: Stanislav Brabec <sbrabec@suse.cz>
---
 libfdisk/src/utils.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/libfdisk/src/utils.c b/libfdisk/src/utils.c
index cc470d9..928c59b 100644
--- a/libfdisk/src/utils.c
+++ b/libfdisk/src/utils.c
@@ -139,9 +139,11 @@ char *fdisk_partname(const char *dev, size_t partno)
 	}
 
 	/* udev names partitions by appending -partN
-	   e.g. ata-SAMSUNG_SV8004H_0357J1FT712448-part1 */
+	   e.g. ata-SAMSUNG_SV8004H_0357J1FT712448-part1
+	   multipath-tools kpartx.rules also append -partN */
 	if ((strncmp(dev, _PATH_DEV_BYID, sizeof(_PATH_DEV_BYID) - 1) == 0) ||
-	     strncmp(dev, _PATH_DEV_BYPATH, sizeof(_PATH_DEV_BYPATH) - 1) == 0) {
+	     strncmp(dev, _PATH_DEV_BYPATH, sizeof(_PATH_DEV_BYPATH) - 1) == 0 ||
+	     strncmp(dev, "/dev/mapper", sizeof("/dev/mapper") - 1) == 0) {
 	       p = "-part";
 	}
 
-- 
2.4.1

-- 
Best Regards / S pozdravem,

Stanislav Brabec
software developer
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