https://github.com/util-linux/util-linux/commit/a323dddbcd1ed05a10e7e870b3e1a48b4ed44a43 From a323dddbcd1ed05a10e7e870b3e1a48b4ed44a43 Mon Sep 17 00:00:00 2001 From: Karel Zak Date: Wed, 2 Sep 2026 13:32:27 +0200 Subject: [PATCH] libmount: add missing fileutils.h include to hook_idmap.c The hook_idmap.c uses RESOLVE_NO_SYMLINKS (added by commit fb8e26535) but does not include fileutils.h, which provides the fallback #define for this constant. On Fedora (glibc 2.40+), this is masked because glibc's transitively includes , which defines RESOLVE_NO_SYMLINKS. On Ubuntu (and other distros with older glibc), does not pull in openat2.h, so the build fails: hook_idmap.c:335:33: error: 'RESOLVE_NO_SYMLINKS' undeclared Fixes: fb8e26535 ("libmount: pin source path with openat2() for restricted users") Signed-off-by: Karel Zak (cherry picked from commit 7e2e010874b10b3aabdc3c4c844c9ffc46a4a374) --- libmount/src/hook_idmap.c | 1 + 1 file changed, 1 insertion(+) diff --git a/libmount/src/hook_idmap.c b/libmount/src/hook_idmap.c index 77494e29810..2c697b17154 100644 --- a/libmount/src/hook_idmap.c +++ b/libmount/src/hook_idmap.c @@ -23,6 +23,7 @@ #include "strutils.h" #include "all-io.h" +#include "fileutils.h" #include "namespace.h" #include "mountP.h"