From: Sebastien GODARD <sysstat@users.noreply.github.com>
Date: Sat, 6 Feb 2021 08:11:08 +0000 (+0100)
Subject: sar: Don't use IFNAMSIZ value from <net/if.h>
X-Git-Tag: v12.5.3~6
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=7a78ce152f28e698bf3010cb3779351e238a0216;p=sysstat

sar: Don't use IFNAMSIZ value from <net/if.h>

IFNAMSIZ value is used to set the maximum length of the network
interface name, and for the definition of structures used to save
data in the binary data files (saDD).
We cannot allow that a new kernel value for IFNAMSIZ changes the format
of saDD binary data files. So now use a constant value of 16 (which is
the present value of IFNAMSIZ).

Signed-off-by: Sebastien GODARD <sysstat@users.noreply.github.com>
---

diff --git a/rd_stats.h b/rd_stats.h
index 9797fb1..8e401bd 100644
--- a/rd_stats.h
+++ b/rd_stats.h
@@ -14,16 +14,10 @@
  ***************************************************************************
  */
 
-/* Get IFNAMSIZ */
-#include <net/if.h>
-#ifndef IFNAMSIZ
-#define IFNAMSIZ	16
-#endif
-
 /* Maximum length of block device name */
 #define MAX_DEV_LEN	128
 /* Maximum length of network interface name */
-#define MAX_IFACE_LEN	IFNAMSIZ
+#define MAX_IFACE_LEN	16
 /* Maximum length of USB manufacturer string */
 #define MAX_MANUF_LEN	24
 /* Maximum length of USB product string */