From ce266c9e168d4f88ae04fea3f9984deb9d9a5dfd Mon Sep 17 00:00:00 2001
From: Karel Zak <kzak@redhat.com>
Date: Thu, 3 Aug 2023 12:39:19 +0200
Subject: [PATCH] libmount: ifdef statx() call

In this case the statx() is use to get mount ID. It's optional and not
required. Let's #ifdef the statx() call and also check for stx_mnt_id
struct member.

Fixes: https://github.com/util-linux/util-linux/issues/2415
Signed-off-by: Karel Zak <kzak@redhat.com>
---
 configure.ac              | 5 ++++-
 libmount/src/hook_mount.c | 2 ++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 13eb6c1e6..b075f0265 100644
--- a/configure.ac
+++ b/configure.ac
@@ -514,7 +514,10 @@ AC_CHECK_MEMBERS([struct termios.c_line],,,
     [[#include <termios.h>]])
 
 AC_CHECK_MEMBERS([struct stat.st_mtim.tv_nsec],,,
-	[#include <sys/stat.h>])
+    [[#include <sys/stat.h>]])
+
+AC_CHECK_MEMBERS([struct statx.stx_mnt_id],,,
+    [[#include <linux/stat.h>]])
 
 AC_CHECK_DECLS([_NL_TIME_WEEK_1STDAY],[],[],[[#include <langinfo.h>]])
 
diff --git a/libmount/src/hook_mount.c b/libmount/src/hook_mount.c
index d69a018ec..056338c49 100644
--- a/libmount/src/hook_mount.c
+++ b/libmount/src/hook_mount.c
@@ -294,6 +294,7 @@ static int hook_create_mount(struct libmnt_context *cxt,
 		/* cleanup after fail (libmount may only try the FS type) */
 		close_sysapi_fds(api);
 
+#if defined(HAVE_STRUCT_STATX) && defined(HAVE_STRUCT_STATX_STX_MNT_ID)
 	if (!rc && cxt->fs) {
 		struct statx st;
 
@@ -306,6 +307,7 @@ static int hook_create_mount(struct libmnt_context *cxt,
 				fs->id = cxt->fs->id;
 		}
 	}
+#endif
 
 done:
 	DBG(HOOK, ul_debugobj(hs, "create FS done [rc=%d, id=%d]", rc, cxt->fs ? cxt->fs->id : -1));
-- 
2.33.0

