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