Core: support several "error_log" directives.

When several "error_log" directives are specified in the same configuration
block, logs are written to all files with a matching log level.

All logs are stored in the singly-linked list that is sorted by log level in
the descending order.

Specific debug levels (NGX_LOG_DEBUG_HTTP,EVENT, etc.) are not supported
if several "error_log" directives are specified.  In this case all logs
will use debug level that has largest absolute value.

1 files changed, 1 insertions, 27 deletions

diff --git a/src/http/ngx_http_core_module.c b/src/http/ngx_http_core_module.c
index 4403fa308..b32a8842c 100644
--- a/src/http/ngx_http_core_module.c
+++ b/src/http/ngx_http_core_module.c
@@ -4888,33 +4888,7 @@ ngx_http_core_error_log(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
 {
     ngx_http_core_loc_conf_t *clcf = conf;
 
-    ngx_str_t  *value, name;
-
-    if (clcf->error_log) {
-        return "is duplicate";
-    }
-
-    value = cf->args->elts;
-
-    if (ngx_strcmp(value[1].data, "stderr") == 0) {
-        ngx_str_null(&name);
-        cf->cycle->log_use_stderr = 1;
-
-    } else {
-        name = value[1];
-    }
-
-    clcf->error_log = ngx_log_create(cf->cycle, &name);
-    if (clcf->error_log == NULL) {
-        return NGX_CONF_ERROR;
-    }
-
-    if (cf->args->nelts == 2) {
-        clcf->error_log->log_level = NGX_LOG_ERR;
-        return NGX_CONF_OK;
-    }
-
-    return ngx_log_set_levels(cf, clcf->error_log);
+    return ngx_log_set_log(cf, &clcf->error_log);
 }