From: Christian Goeschel Ndjomouo <cgoesc2@wgu.edu>
Date: Mon, 30 Mar 2026 13:10:52 +0000 (-0400)
Subject: nsenter: use clearenv() only when it is available
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=088c29ec6a64713bd3cb5d493776e8659ebd6479;p=thirdparty%2Futil-linux.git

nsenter: use clearenv() only when it is available

Signed-off-by: Christian Goeschel Ndjomouo <cgoesc2@wgu.edu>
---

diff --git a/sys-utils/nsenter.c b/sys-utils/nsenter.c
index e10ba9cf9..245e1673e 100644
--- a/sys-utils/nsenter.c
+++ b/sys-utils/nsenter.c
@@ -37,6 +37,10 @@
 # include <selinux/selinux.h>
 #endif
 
+#ifndef HAVE_ENVIRON_DECL
+extern char **environ;
+#endif
+
 #include "strutils.h"
 #include "nls.h"
 #include "c.h"
@@ -912,7 +916,11 @@ int main(int argc, char *argv[])
 		ls = env_list_from_fd(env_fd);
 		if (!ls && errno)
 			err(EXIT_FAILURE, _("failed to get environment variables"));
+#ifdef HAVE_CLEARENV
 		clearenv();
+#else
+		environ = NULL;
+#endif
 		if (ls && env_list_setenv(ls, 0) < 0)
 			err(EXIT_FAILURE, _("failed to set environment variables"));
 		env_list_free(ls);