From 20b8c97b15aeb7990fdd0144b2e90734eee2c0ef Mon Sep 17 00:00:00 2001
From: Thomas Habets <thomas@habets.se>
Date: Wed, 8 May 2024 16:05:09 +0100
Subject: [PATCH] Allow clock_gettime64 in seccomp, if present

From discussion in #54
---
 configure.ac | 1 +
 src/arping.c | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/configure.ac b/configure.ac
index de77cf0..57bf7a2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -213,6 +213,7 @@ seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS($1), 0);
 
 CHECK_SECCOMP_SYSCALL([fstat]);
 CHECK_SECCOMP_SYSCALL([statx]);
+CHECK_SECCOMP_SYSCALL([clock_gettime64]);
 CHECK_SECCOMP_SYSCALL([nonexistent]);
 
 AC_CONFIG_FILES([Makefile])
diff --git a/src/arping.c b/src/arping.c
index 481491e..b3dca07 100644
--- a/src/arping.c
+++ b/src/arping.c
@@ -683,6 +683,9 @@ static void drop_seccomp(int libnet_fd)
         seccomp_allow(ctx, "newfstatat");
         seccomp_allow(ctx, "exit_group");
         seccomp_allow(ctx, "rt_sigreturn");
+#if HAVE_SECCOMP_SYSCALL_clock_gettime64
+        seccomp_allow(ctx, "clock_gettime64");
+#endif
 
         // Load.
         if (seccomp_load(ctx)) {