mount: fix undefined reference to `security_get_initial_context'

> Gentoo-hardened stable have: sys-libs/libselinux-1.34.14
> I have:
> mount.c:(.text+0x12ce): undefined reference to `security_get_initial_context'

Reported-by: Максим Бритов <maxim.britov@gmail.com>
Addresses-Gentoo-Bug: #270168
Signed-off-by: Karel Zak <kzak@redhat.com>

diff --git a/configure.ac b/configure.ac
index 9ab94a85836a777bb79b45c5bd56e8672446a275..69d63e0136c5e439b86aaa105a58736ba2e1786d 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -656,6 +656,11 @@ fi
 if test "x$have_selinux" = xyes; then
   SELINUX_LIBS="-lselinux -lsepol"
   SELINUX_LIBS_STATIC="-lselinux -lsepol"
+  old_LDFLAGS="$LDFLAGS"
+  LDFLAGS="$LDFLAGS $SELINUX_LIBS"
+  # This function is missing in old libselinux 1.xx versions
+  AC_CHECK_FUNCS([security_get_initial_context])
+  LDFLAGS="$old_LDFLAGS"
 fi
 AC_SUBST([SELINUX_LIBS])
 AC_SUBST([SELINUX_LIBS_STATIC])

diff --git a/mount/mount.c b/mount/mount.c
index f48f9d408dd1a358dded0d4e9fa0b4ccf2762257..cc5b88ae53296c9d7f217f75799e7b9733ec2ee7 100644 (file)
--- a/mount/mount.c
+++ b/mount/mount.c
@@ -1561,7 +1561,7 @@ mount_retry:
 
  out:
 
-#ifdef HAVE_LIBSELINUX
+#if defined(HAVE_LIBSELINUX) && defined(HAVE_SECURITY_GET_INITIAL_CONTEXT)
   if (res != EX_FAIL && verbose && is_selinux_enabled() > 0) {
       security_context_t raw = NULL, def = NULL;