From 1b40174fd49e0a74c8f08577575bd850f0704b82 Mon Sep 17 00:00:00 2001
From: Eunseon Lee <es.lee@lge.com>
Date: Thu, 21 Nov 2024 11:53:45 +0900
Subject: [PATCH] libbpf_tools/profile: Support PID namespace mapping if
 available in the kernel

Support PID namespace mapping only in kernels where bpf_get_ns_current_pid_tgid
is available.
---
 libbpf-tools/profile.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libbpf-tools/profile.c b/libbpf-tools/profile.c
index dc27b400aa42..84d3bed57093 100644
--- a/libbpf-tools/profile.c
+++ b/libbpf-tools/profile.c
@@ -511,6 +511,9 @@ static int set_pidns(const struct profile_bpf *obj)
 {
 	struct stat statbuf;
 
+	if (!probe_bpf_ns_current_pid_tgid())
+		return -EPERM;
+
 	if (stat("/proc/self/ns/pid", &statbuf) == -1)
 		return -errno;