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iproute2: add missing limits.h includes

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This patch has been submitted upstream to fix an error reported by a few
users. One instance seen using gcc 10.2.0, binutils 2.35.1 and musl 1.1.24:

bpf_glue.c: In function 'get_libbpf_version':
bpf_glue.c:46:11: error: 'PATH_MAX' undeclared (first use in this function);
did you mean 'AF_MAX'?
   46 |  char buf[PATH_MAX], *s;
      |           ^~~~~~~~
      |           AF_MAX

Reported-by: Rui Salvaterra <rsalvaterra@gmail.com>
Signed-off-by: Tony Ambardar <itugrok@yahoo.com>
(cherry picked from commit 10ffefe602)
This commit is contained in:
Tony Ambardar 2021-03-12 20:58:28 -08:00 committed by Hauke Mehrtens
parent 0ffc498ddd
commit e07105303f
1 changed files with 45 additions and 0 deletions
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45
package/network/utils/iproute2/patches/185-libbpf-add-limits-h.patch Normal file
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@ -0,0 +1,45 @@
From c77310119f9a5f99221dd967c5eb0c7a26094b41 Mon Sep 17 00:00:00 2001
From: Tony Ambardar <Tony.Ambardar@gmail.com>
Date: Wed, 3 Mar 2021 10:29:24 -0800
Subject: [PATCH] lib/bpf: add missing limits.h includes
Several functions in bpf_glue.c and bpf_libbpf.c rely on PATH_MAX, which is
normally included from <limits.h> in other iproute2 source files.
It fixes errors seen using gcc 10.2.0, binutils 2.35.1 and musl 1.1.24:
bpf_glue.c: In function 'get_libbpf_version':
bpf_glue.c:46:11: error: 'PATH_MAX' undeclared (first use in this function);
did you mean 'AF_MAX'?
46 | char buf[PATH_MAX], *s;
| ^~~~~~~~
| AF_MAX
Reported-by: Rui Salvaterra <rsalvaterra@gmail.com>
Signed-off-by: Tony Ambardar <Tony.Ambardar@gmail.com>
---
lib/bpf_glue.c | 2 ++
lib/bpf_libbpf.c | 1 +
2 files changed, 3 insertions(+)
--- a/lib/bpf_glue.c
+++ b/lib/bpf_glue.c
@@ -4,6 +4,8 @@
* Authors: Hangbin Liu <haliu@redhat.com>
*
*/
+#include <limits.h>
+
#include "bpf_util.h"
#ifdef HAVE_LIBBPF
#include <bpf/bpf.h>
--- a/lib/bpf_libbpf.c
+++ b/lib/bpf_libbpf.c
@@ -13,6 +13,7 @@
#include <stdint.h>
#include <errno.h>
#include <fcntl.h>
+#include <limits.h>
#include <libelf.h>
#include <gelf.h>