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From 5aea6937edf77a753e0d504bb637214e116aaed2 Mon Sep 17 00:00:00 2001
From: KyleMahlkuch <Kyle.Mahlkuch@ibm.com>
Date: Mon, 25 Jun 2018 14:52:01 -0500
Subject: [PATCH 13/14] libfdisk: Fix multipath partition seperators for
user-friendly names
The current code assumes "-part" is the only partition sepereator
but this is not true for some distros.
For example in Ubuntu 18.04 fdisk does not print the correct names for
mpatha:
~# ls -l /dev/mapper/mpatha*
lrwxrwxrwx 1 root root 7 Feb 1 04:39 /dev/mapper/mpatha -> ../dm-0
lrwxrwxrwx 1 root root 7 Feb 1 04:38 /dev/mapper/mpatha1 -> ../dm-4
lrwxrwxrwx 1 root root 7 Feb 1 04:38 /dev/mapper/mpatha2 -> ../dm-5
lrwxrwxrwx 1 root root 7 Feb 1 04:38 /dev/mapper/mpatha3 -> ../dm-6
~# fdisk -l /dev/mapper/mpatha
Device Boot Start End Sectors Size Id Type
/dev/mapper/mpatha-part1 2048 419432447 419430400 200G 83 Linux
/dev/mapper/mpatha-part2 419432448 838862847 419430400 200G 83 Linux
/dev/mapper/mpatha-part3 838862848 1258291199 419428352 200G 83 Linux
Instead of assuming a partition seperator of "-part" this patch uses
access to check the file system for a partition seperator of "p" or
the absense of a partition seperator. If neither of these work the patch
defaults to "-part" like we had before this patch.
Upstream: http://github.com/karelzak/util-linux/commit/73775189767195f1d9f5b6b6f6a54e51f61c4356
Addresses: http://bugzilla.redhat.com/show_bug.cgi?id=1655650
Signed-off-by: Karel Zak <kzak@redhat.com>
---
libfdisk/src/utils.c | 15 ++++++++++++++-
1 file changed, 14 insertions(+), 1 deletion(-)
diff --git a/libfdisk/src/utils.c b/libfdisk/src/utils.c
index 5ba9e0466..54e28b2fa 100644
--- a/libfdisk/src/utils.c
+++ b/libfdisk/src/utils.c
@@ -153,7 +153,20 @@ char *fdisk_partname(const char *dev, size_t partno)
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, "/dev/mapper", sizeof("/dev/mapper") - 1) == 0) {
- p = "-part";
+ asprintf(&res, "%.*s%zu", w, dev, partno);
+ if (access(res, F_OK) == 0){
+ p = "";
+ } else {
+ /* check for partition seperator "p" */
+ p = "p";
+ free(res);
+ asprintf(&res, "%.*s%s%zu", w, dev, p, partno);
+ if (access(res, F_OK) != 0){
+ /* otherwise, default to "-path" */
+ p = "-part";
+ }
+ }
+ free(res);
}
if (asprintf(&res, "%.*s%s%zu", w, dev, p, partno) <= 0)
--
2.17.2
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