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BUG/MINOR: lua: fix missing lock protection on server.

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To avoid inconsistencies server's attributes must be read
or updated under lock.
This commit is contained in:
Emeric Brun 2017-11-02 17:21:40 +01:00 committed by Willy Tarreau
parent e9fd6b5916
commit 8c4954c5c2
1 changed files with 8 additions and 4 deletions
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12
src/hlua_fcn.c
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@ -587,7 +587,9 @@ int hlua_server_set_weight(lua_State *L)
srv = hlua_check_server(L, 1);
weight = luaL_checkstring(L, 2);
SPIN_LOCK(SERVER_LOCK, &srv->lock);
err = server_parse_weight_change_request(srv, weight);
SPIN_UNLOCK(SERVER_LOCK, &srv->lock);
if (!err)
lua_pushnil(L);
else
@ -613,7 +615,9 @@ int hlua_server_set_addr(lua_State *L)
srv = hlua_check_server(L, 1);
addr = luaL_checkstring(L, 2);
SPIN_LOCK(SERVER_LOCK, &srv->lock);
err = server_parse_addr_change_request(srv, addr, "Lua script");
SPIN_UNLOCK(SERVER_LOCK, &srv->lock);
if (!err)
lua_pushnil(L);
else
@ -696,12 +700,12 @@ int hlua_server_check_force_up(lua_State *L)
struct server *sv;
sv = hlua_check_server(L, 1);
SPIN_LOCK(SERVER_LOCK, &sv->lock);
if (!(sv->track)) {
SPIN_LOCK(SERVER_LOCK, &sv->lock);
sv->check.health = sv->check.rise + sv->check.fall - 1;
srv_set_running(sv, "changed from Lua script", NULL);
SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
}
SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
return 0;
}
@ -710,12 +714,12 @@ int hlua_server_check_force_nolb(lua_State *L)
struct server *sv;
sv = hlua_check_server(L, 1);
SPIN_LOCK(SERVER_LOCK, &sv->lock);
if (!(sv->track)) {
SPIN_LOCK(SERVER_LOCK, &sv->lock);
sv->check.health = sv->check.rise + sv->check.fall - 1;
srv_set_stopping(sv, "changed from Lua script", NULL);
SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
}
SPIN_UNLOCK(SERVER_LOCK, &sv->lock);
return 0;
}