[git commit] sysctl: do not error out showing write-only data. Closes 6386

[Denys Vlasenko]

commit: http://git.busybox.net/busybox/commit/?id=6554d03735e394c613ebacfe6b8d7b239e164310
branch: http://git.busybox.net/busybox/commit/?id=refs/heads/master

Signed-off-by: Denys Vlasenko <vda.linux at googlemail.com>
---
 procps/sysctl.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/procps/sysctl.c b/procps/sysctl.c
index c6a1de2..f0883f0 100644
--- a/procps/sysctl.c
+++ b/procps/sysctl.c
@@ -129,6 +129,9 @@ static int sysctl_act_on_setting(char *setting)
 
 	if (fd < 0) {
 		switch (errno) {
+		case EACCES:
+			/* Happens for write-only settings, e.g. net.ipv6.route.flush */
+			goto end;
 		case ENOENT:
 			if (option_mask32 & FLAG_SHOW_KEY_ERRORS)
 				bb_error_msg("error: '%s' is an unknown key", outname);