File 0009-BUG-MEDIUM-stats-show-servers-state-may-sh... of Package haproxy

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File 0009-BUG-MEDIUM-stats-show-servers-state-may-show-an-serv.patch of Package haproxy (Revision 7a17a400d87d98f3a98f25be221bb8b7)

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From 4cb6ccc835ce0c2c874e9868a62a981278b510f7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Cyril=20Bont=C3=A9?= <cyril.bonte@free.fr>
Date: Fri, 27 May 2016 00:06:45 +0200
Subject: [PATCH 09/14] BUG/MEDIUM: stats: show servers state may show an
 servers from another backend

Olivier Doucet reported that "show servers state" was producing an invalid
output with some configurations where nbproc > 1.

Indeed, commit 76a99784f4 fixed some issues but unfortunately introduced a
regression when a backend bound to the same process as the stats socket and a
previous backend is bound to another one.

For example :
  global
    daemon
    nbproc 2
    stats socket /var/run/haproxy-1.sock process 1
    stats socket /var/run/haproxy-2.sock process 2

listen proc1
    bind 127.0.0.1:9001
    bind-process 1
    server WRONG 127.0.0.1:80

listen proc2
    bind 127.0.0.1:9002
    bind-process 2
    server RIGHT 127.0.0.1:80

Requesting "show servers state" on /var/run/haproxy-2.sock was producing a line
like :
3 proc2 1 WRONG 127.0.0.1 2 0 1 1 4 1 0 2 0 0 0 0

whereas the line below was awaited :
3 proc2 1 RIGHT 127.0.0.1 2 0 1 1 5 1 0 2 0 0 0 0

This was caused by the initialization of the server loop too early, before the
bind_proc filtering whereas it should be done after.

This fix should be backported to 1.6, where the regression has unfortunately
been backported.

(cherry picked from commit d55bd7a6a934387cdc5df7ad3fbc2718dc3a724e)
---
 src/dumpstats.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/dumpstats.c b/src/dumpstats.c
index b9f5719..4614cf2 100644
--- a/src/dumpstats.c
+++ b/src/dumpstats.c
@@ -2755,6 +2755,9 @@ static int dump_servers_state(struct stream_interface *si, struct chunk *buf)
 	if (appctx->ctx.server_state.px->bind_proc && !(appctx->ctx.server_state.px->bind_proc & (1UL << (relative_pid - 1))))
 		return 1;
 
+	if (!appctx->ctx.server_state.sv)
+		appctx->ctx.server_state.sv = appctx->ctx.server_state.px->srv;
+
 	for (; appctx->ctx.server_state.sv != NULL; appctx->ctx.server_state.sv = srv->next) {
 		srv = appctx->ctx.server_state.sv;
 		srv_addr[0] = '\0';
@@ -2857,8 +2860,6 @@ static int stats_dump_servers_state_to_buffer(struct stream_interface *si)
 
 	for (; appctx->ctx.server_state.px != NULL; appctx->ctx.server_state.px = curproxy->next) {
 		curproxy = appctx->ctx.server_state.px;
-		if (!appctx->ctx.server_state.sv)
-			appctx->ctx.server_state.sv = appctx->ctx.server_state.px->srv;
 		/* servers are only in backends */
 		if (curproxy->cap & PR_CAP_BE) {
 			if (!dump_servers_state(si, &trash))
-- 
2.6.6

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File 0009-BUG-MEDIUM-stats-show-servers-state-may-show-an-serv.patch of Package haproxy (Revision 7a17a400d87d98f3a98f25be221bb8b7)

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