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From ffe4233155085b479c69abe844a34de212b8e5e1 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
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Date: Thu, 16 Jan 2020 14:45:28 +0100
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Subject: [PATCH] sysctl: downgrade message when we have no permission
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We need to run sysctl also in containers, because the network
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subtree is namespaces and may legitimately be writable. But logging
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all "errors" at notice level creates unwanted noise.
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Also downgrade message about missing sysctls to log_info. This might also be
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relatively common when configuration is targeted at different kernel
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versions. With log_debug it'll still end up in the logs, but isn't really worth
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of "notice" most of the time.
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https://bugzilla.redhat.com/show_bug.cgi?id=1609806
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(cherry picked from commit 32458cc9687c1b60ff0f22c0e71da93ce78b1534)
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Resolves: #2158160
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---
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src/sysctl/sysctl.c | 16 +++++++++-------
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1 file changed, 9 insertions(+), 7 deletions(-)
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diff --git a/src/sysctl/sysctl.c b/src/sysctl/sysctl.c
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index 4c85d6887f..dc14e1aaf1 100644
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--- a/src/sysctl/sysctl.c
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+++ b/src/sysctl/sysctl.c
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@@ -82,13 +82,15 @@ static int apply_all(OrderedHashmap *sysctl_options) {
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k = sysctl_write(option->key, option->value);
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if (k < 0) {
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/* If the sysctl is not available in the kernel or we are running with reduced
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- * privileges and cannot write it, then log about the issue at LOG_NOTICE level, and
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- * proceed without failing. (EROFS is treated as a permission problem here, since
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- * that's how container managers usually protected their sysctls.) In all other cases
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- * log an error and make the tool fail. */
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-
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- if (IN_SET(k, -EPERM, -EACCES, -EROFS, -ENOENT) || option->ignore_failure)
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- log_notice_errno(k, "Couldn't write '%s' to '%s', ignoring: %m", option->value, option->key);
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+ * privileges and cannot write it, then log about the issue, and proceed without
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+ * failing. (EROFS is treated as a permission problem here, since that's how
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+ * container managers usually protected their sysctls.) In all other cases log an
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+ * error and make the tool fail. */
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+
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+ if (option->ignore_failure || k == -EROFS || ERRNO_IS_PRIVILEGE(k))
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+ log_debug_errno(k, "Couldn't write '%s' to '%s', ignoring: %m", option->value, option->key);
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+ else if (k == -ENOENT)
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+ log_info_errno(k, "Couldn't write '%s' to '%s', ignoring: %m", option->value, option->key);
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else {
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log_error_errno(k, "Couldn't write '%s' to '%s': %m", option->value, option->key);
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if (r == 0)
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