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From 3bee0460d74bad88eca6592e63ca926961b43b67 Mon Sep 17 00:00:00 2001
From: Yi Zhao <yi.zhao@windriver.com>
Date: Fri, 6 Mar 2020 16:09:26 +0800
Subject: [PATCH] sysctl: ignore EIO of stable_secret below
/proc/sys/net/ipv6/conf
Avoid confusing messages caused by EIO on reading
/proc/sys/net/ipv6/conf/*/stable_secret if those are not set yet.
Make it behave the same as procps(>=3.3.13).
Upstream-Status: Submitted [busybox@busybox.net mailing list]
Signed-off-by: Yi Zhao <yi.zhao@windriver.com>
---
procps/sysctl.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/procps/sysctl.c b/procps/sysctl.c
index 6d77185ca..42c51cc91 100644
--- a/procps/sysctl.c
+++ b/procps/sysctl.c
@@ -202,7 +202,14 @@ static int sysctl_act_on_setting(char *setting)
value = cptr = xmalloc_read(fd, NULL);
close(fd);
if (value == NULL) {
- bb_perror_msg("error reading key '%s'", outname);
+ switch (errno) {
+ case EIO:
+ /* Ignore stable_secret below /proc/sys/net/ipv6/conf */
+ break;
+ default:
+ bb_perror_msg("error reading key '%s'", outname);
+ break;
+ }
retval = EXIT_FAILURE;
goto end;
}
--
2.17.1
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