!217 [sync] PR-215: config: check for 0 from read

From: @openeuler-sync-bot 
Reviewed-by: @liubo254 
Signed-off-by: @liubo254

0036-config-check-for-0-from-read.patch

@@ -0,0 +1,30 @@
+From c3c212d2185c0e185a536f9380e33bccc44f09a4 Mon Sep 17 00:00:00 2001
+From: Zdenek Kabelac <zkabelac@redhat.com>
+Date: Wed, 29 Jan 2025 00:00:23 +0100
+Subject: [PATCH] config: check for 0 from read
+
+When the read returns 0, it could mean the file
+was trimmed or some other type of problem.
+In this case abort the potentially endless loop.
+
+Reference: https://github.com/lvmteam/lvm2/commit/e907c3cf9a1c294b6551d525d58f3bd7dbbb1cc5
+Conflict: NA
+---
+ lib/config/config.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/lib/config/config.c b/lib/config/config.c
+index 0cb0da1..a4c3fe6 100644
+--- a/lib/config/config.c
++++ b/lib/config/config.c
+@@ -534,7 +534,7 @@ int config_file_read_fd(struct dm_config_tree *cft, struct device *dev, dev_io_r
+ 				sz = read(dev_fd(dev), buf + rsize, size - rsize);
+ 			} while ((sz < 0) && ((errno == EINTR) || (errno == EAGAIN)));
+
+-			if (sz < 0) {
++			if (sz <= 0) {
+ 				log_sys_error("read", dev_name(dev));
+ 				goto out;
+ 			}
+--
+2.33.0

lvm2.spec

@@ -43,7 +43,7 @@
 
 Name:      lvm2
 Version:   2.03.14
-Release:   17
+Release:   18
 Epoch:     8
 Summary:   Tools for logical volume management
 License:   GPLv2+ and LGPLv2.1 and BSD
@@ -84,6 +84,7 @@ Patch32:   0032-clean-up-group-struct-in-_stats_create_group-error-path.patch
 Patch33:   0033-dm-event-release-buffer-on-dm_event_get_version.patch
 Patch34:   0034-dmstats-Fix-memory-leak-on-error-path.patch 
 Patch35:   0035-fix-function-undeclared-in-libdm-common.c-and-dev-cache.c.patch
+Patch36:   0036-config-check-for-0-from-read.patch
 
 BuildRequires: gcc
 BuildRequires: gcc-c++
@@ -510,6 +511,9 @@ fi
 
 
 %changelog
+* Fri Mar 28 2025 chenrenhui <chenrenhui1@huawei.com> - 8:2.03.14-18
+- config: check for 0 from read
+
 * Mon Nov 18 2024 yanshuai <yanshuai@kylinos.cn> - 8:2.03.14-17
 - Avoid unowned %%{python3_sitelib}/lvmdbusd directory