[Buildroot] [PATCH 1/1] package/nfs-utils: Fix build with glibc-2.42

* [Buildroot] [PATCH 1/1] package/nfs-utils: Fix build with glibc-2.42
@ 2025-07-31 17:28 Bernd Kuhls
  2025-07-31 19:19 ` Petr Vorel
  0 siblings, 1 reply; 3+ messages in thread
From: Bernd Kuhls @ 2025-07-31 17:28 UTC (permalink / raw)
  To: buildroot; +Cc: Giulio Benetti, Petr Vorel

Add upstream patch to fix build with glibc-2.42.

Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
---
 .../0001-Fix-build-with-glibc-2.42.patch      | 59 +++++++++++++++++++
 1 file changed, 59 insertions(+)
 create mode 100644 package/nfs-utils/0001-Fix-build-with-glibc-2.42.patch

diff --git a/package/nfs-utils/0001-Fix-build-with-glibc-2.42.patch b/package/nfs-utils/0001-Fix-build-with-glibc-2.42.patch
new file mode 100644
index 0000000000..6bf3622586
--- /dev/null
+++ b/package/nfs-utils/0001-Fix-build-with-glibc-2.42.patch
@@ -0,0 +1,59 @@
+From 9f974046c37b7c28705d5558328759fff708b1cb Mon Sep 17 00:00:00 2001
+From: Yaakov Selkowitz <yselkowi@redhat.com>
+Date: Fri, 27 Jun 2025 04:54:08 -0500
+Subject: Fix build with glibc-2.42
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+exportfs.c: In function ‘release_lockfile’:
+exportfs.c:83:17: error: ignoring return value of ‘lockf’ declared with attribute ‘warn_unused_result’ [-Werror=unused-result]
+   83 |                 lockf(_lockfd, F_ULOCK, 0);
+      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~
+exportfs.c: In function ‘grab_lockfile’:
+exportfs.c:77:17: error: ignoring return value of ‘lockf’ declared with attribute ‘warn_unused_result’ [-Werror=unused-result]
+   77 |                 lockf(_lockfd, F_LOCK, 0);
+      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~
+
+lockf is now marked with attribute warn_unused_result:
+
+https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=f3c82fc1b41261f582f5f9fa12f74af9bcbc88f9
+
+Signed-off-by: Steve Dickson <steved@redhat.com>
+
+Upstream: https://git.linux-nfs.org/?p=steved/nfs-utils.git;a=commit;h=9f974046c37b7c28705d5558328759fff708b1cb
+
+Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
+---
+ utils/exportfs/exportfs.c | 10 ++++++++--
+ 1 file changed, 8 insertions(+), 2 deletions(-)
+
+diff --git a/utils/exportfs/exportfs.c b/utils/exportfs/exportfs.c
+index b03a047b..748c38e3 100644
+--- a/utils/exportfs/exportfs.c
++++ b/utils/exportfs/exportfs.c
+@@ -74,13 +74,19 @@ grab_lockfile(void)
+ {
+ 	_lockfd = open(lockfile, O_CREAT|O_RDWR, 0666);
+ 	if (_lockfd != -1)
+-		lockf(_lockfd, F_LOCK, 0);
++		if (lockf(_lockfd, F_LOCK, 0) != 0) {
++			xlog_warn("%s: lockf() failed: errno %d (%s)",
++			__func__, errno, strerror(errno));
++		}
+ }
+ static void
+ release_lockfile(void)
+ {
+ 	if (_lockfd != -1) {
+-		lockf(_lockfd, F_ULOCK, 0);
++		if (lockf(_lockfd, F_ULOCK, 0) != 0) {
++			xlog_warn("%s: lockf() failed: errno %d (%s)",
++			__func__, errno, strerror(errno));
++		}
+ 		close(_lockfd);
+ 		_lockfd = -1;
+ 	}
+-- 
+cgit v1.2.3
+
-- 
2.39.5

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