dcavalca / rpms / util-linux

Forked from rpms/util-linux 2 years ago
Clone

Blame SOURCES/0066-libfdisk-fix-fdisk_reread_changes-for-extended-parti.patch

e377cc
From aecaffc55dd763c34f61937b2047f0aaaeb4e6fc Mon Sep 17 00:00:00 2001
e377cc
From: Karel Zak <kzak@redhat.com>
e377cc
Date: Thu, 6 Aug 2020 11:32:33 +0200
e377cc
Subject: [PATCH 66/74] libfdisk: fix fdisk_reread_changes() for extended
e377cc
 partitions
e377cc
e377cc
Linux kernel assumes only 1KiB extended partition to avoid overlapping
e377cc
with nested logical partitions. We need to follow this rule for
e377cc
BLKPG_ADD_PARTITION.
e377cc
e377cc
Addresses: https://github.com/karelzak/util-linux/issues/1112
e377cc
Addresses: https://bugzilla.redhat.com/show_bug.cgi?id=2041498
e377cc
Upstream: http://github.com/util-linux/util-linux/commit/33f50706fd7c1c5e53f8f355f12b685c6935f5a4
e377cc
Signed-off-by: Karel Zak <kzak@redhat.com>
e377cc
---
e377cc
 libfdisk/src/context.c | 13 ++++++++++++-
e377cc
 1 file changed, 12 insertions(+), 1 deletion(-)
e377cc
e377cc
diff --git a/libfdisk/src/context.c b/libfdisk/src/context.c
e377cc
index fe7eb9e7e..114101980 100644
e377cc
--- a/libfdisk/src/context.c
e377cc
+++ b/libfdisk/src/context.c
e377cc
@@ -867,10 +867,21 @@ int fdisk_reread_changes(struct fdisk_context *cxt, struct fdisk_table *org)
e377cc
 		}
e377cc
 	}
e377cc
 	for (i = 0; i < nadds; i++) {
e377cc
+		uint64_t sz;
e377cc
+
e377cc
 		pa = add[i];
e377cc
+		sz = pa->size * ssf;
e377cc
+
e377cc
 		DBG(PART, ul_debugobj(pa, "#%zu calling BLKPG_ADD_PARTITION", pa->partno));
e377cc
+
e377cc
+		if (fdisk_is_label(cxt, DOS) && fdisk_partition_is_container(pa))
e377cc
+			/* Let's follow the Linux kernel and reduce
e377cc
+                         * DOS extended partition to 1 or 2 sectors.
e377cc
+			 */
e377cc
+			sz = min(sz, (uint64_t) 2);
e377cc
+
e377cc
 		if (partx_add_partition(cxt->dev_fd, pa->partno + 1,
e377cc
-					pa->start * ssf, pa->size * ssf) != 0) {
e377cc
+					pa->start * ssf, sz) != 0) {
e377cc
 			fdisk_warn(cxt, _("Failed to add partition %zu to system"), pa->partno + 1);
e377cc
 			err++;
e377cc
 		}
e377cc
-- 
e377cc
2.31.1
e377cc