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syslog_1.0.6.patch
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syslog_1.0.6.patch
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diff --git a/src/core/ngx_cycle.c b/src/core/ngx_cycle.c
index 7986707..9902ef7 100644
--- a/src/core/ngx_cycle.c
+++ b/src/core/ngx_cycle.c
@@ -84,6 +84,12 @@ ngx_init_cycle(ngx_cycle_t *old_cycle)
cycle->pool = pool;
cycle->log = log;
cycle->new_log.log_level = NGX_LOG_ERR;
+#if (NGX_ENABLE_SYSLOG)
+ cycle->new_log.facility = SYSLOG_FACILITY;
+ cycle->new_log.facility = ERR_SYSLOG_PRIORITY;
+ cycle->new_log.syslog_on = 0;
+ cycle->new_log.syslog_set = 0;
+#endif
cycle->old_cycle = old_cycle;
cycle->conf_prefix.len = old_cycle->conf_prefix.len;
diff --git a/src/core/ngx_log.c b/src/core/ngx_log.c
index 4433314..b8641eb 100644
--- a/src/core/ngx_log.c
+++ b/src/core/ngx_log.c
@@ -9,6 +9,15 @@
static char *ngx_error_log(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
+#if (NGX_ENABLE_SYSLOG)
+static char *ngx_set_syslog(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
+void log_exit(ngx_cycle_t *cycle);
+
+typedef struct{
+ ngx_str_t name;
+ ngx_int_t macro;
+} ngx_string_to_macro_t;
+#endif
static ngx_command_t ngx_errlog_commands[] = {
@@ -20,6 +29,15 @@ static ngx_command_t ngx_errlog_commands[] = {
0,
NULL},
+#if (NGX_ENABLE_SYSLOG)
+ {ngx_string("syslog"),
+ NGX_MAIN_CONF|NGX_CONF_TAKE12,
+ ngx_set_syslog,
+ 0,
+ 0,
+ NULL},
+#endif
+
ngx_null_command
};
@@ -42,7 +60,11 @@ ngx_module_t ngx_errlog_module = {
NULL, /* init thread */
NULL, /* exit thread */
NULL, /* exit process */
- NULL, /* exit master */
+#if (NGX_ENABLE_SYSLOG)
+ log_exit, /* exit master */
+#else
+ NULL,
+#endif
NGX_MODULE_V1_PADDING
};
@@ -51,6 +73,48 @@ static ngx_log_t ngx_log;
static ngx_open_file_t ngx_log_file;
ngx_uint_t ngx_use_stderr = 1;
+#if (NGX_ENABLE_SYSLOG)
+static ngx_string_to_macro_t ngx_syslog_facilities[] = {
+ {ngx_string("auth"), LOG_AUTH},
+#if !(NGX_SOLARIS)
+ {ngx_string("authpriv"), LOG_AUTHPRIV},
+#endif
+ {ngx_string("cron"), LOG_CRON},
+ {ngx_string("daemon"), LOG_DAEMON},
+#if !(NGX_SOLARIS)
+ {ngx_string("ftp"), LOG_FTP},
+#endif
+ {ngx_string("kern"), LOG_KERN},
+ {ngx_string("local0"), LOG_LOCAL0},
+ {ngx_string("local1"), LOG_LOCAL1},
+ {ngx_string("local2"), LOG_LOCAL2},
+ {ngx_string("local3"), LOG_LOCAL3},
+ {ngx_string("local4"), LOG_LOCAL4},
+ {ngx_string("local5"), LOG_LOCAL5},
+ {ngx_string("local6"), LOG_LOCAL6},
+ {ngx_string("local7"), LOG_LOCAL7},
+ {ngx_string("lpr"), LOG_LPR},
+ {ngx_string("mail"), LOG_MAIL},
+ {ngx_string("news"), LOG_NEWS},
+ {ngx_string("syslog"), LOG_SYSLOG},
+ {ngx_string("user"), LOG_USER},
+ {ngx_string("uucp"), LOG_UUCP},
+ { ngx_null_string, 0}
+};
+
+static ngx_string_to_macro_t ngx_syslog_priorities[] = {
+ {ngx_string("emerg"), LOG_EMERG},
+ {ngx_string("alert"), LOG_ALERT},
+ {ngx_string("crit"), LOG_CRIT},
+ {ngx_string("error"), LOG_ERR},
+ {ngx_string("err"), LOG_ERR},
+ {ngx_string("warn"), LOG_WARNING},
+ {ngx_string("notice"),LOG_NOTICE},
+ {ngx_string("info"), LOG_INFO},
+ {ngx_string("debug"), LOG_DEBUG},
+ { ngx_null_string, 0}
+};
+#endif
static ngx_str_t err_levels[] = {
ngx_null_string,
@@ -88,11 +152,16 @@ ngx_log_error_core(ngx_uint_t level, ngx_log_t *log, ngx_err_t err,
va_list args;
#endif
u_char *p, *last, *msg;
+#if (NGX_ENABLE_SYSLOG)
+ u_char *errstr_syslog;
+#endif
u_char errstr[NGX_MAX_ERROR_STR];
+#if !(NGX_ENABLE_SYSLOG)
if (log->file->fd == NGX_INVALID_FILE) {
return;
}
+#endif
last = errstr + NGX_MAX_ERROR_STR;
@@ -101,6 +170,10 @@ ngx_log_error_core(ngx_uint_t level, ngx_log_t *log, ngx_err_t err,
p = errstr + ngx_cached_err_log_time.len;
+#if (NGX_ENABLE_SYSLOG)
+ errstr_syslog = p;
+#endif
+
p = ngx_slprintf(p, last, " [%V] ", &err_levels[level]);
/* pid#tid */
@@ -139,11 +212,27 @@ ngx_log_error_core(ngx_uint_t level, ngx_log_t *log, ngx_err_t err,
ngx_linefeed(p);
+#if (NGX_ENABLE_SYSLOG)
+ if (log->file != NULL && log->file->name.len != 0) {
+ (void) ngx_write_fd(log->file->fd, errstr, p - errstr);
+ }
+
+ /* Don't send the debug level info to syslog */
+ if (log->syslog_on && level < NGX_LOG_DEBUG) {
+ /* write to syslog */
+ syslog(log->priority, "%.*s", (int)(p - errstr_syslog), errstr_syslog);
+ }
+#else
(void) ngx_write_fd(log->file->fd, errstr, p - errstr);
+#endif
if (!ngx_use_stderr
|| level > NGX_LOG_WARN
+#if (NGX_ENABLE_SYSLOG)
+ || (log->file != NULL && log->file->fd == ngx_stderr))
+#else
|| log->file->fd == ngx_stderr)
+#endif
{
return;
}
@@ -364,6 +453,50 @@ ngx_log_create(ngx_cycle_t *cycle, ngx_str_t *name)
return log;
}
+
+
+#if (NGX_ENABLE_SYSLOG)
+ngx_int_t
+ngx_log_get_priority(ngx_conf_t *cf, ngx_str_t *priority)
+{
+ ngx_int_t p = 0;
+ ngx_uint_t n, match = 0;
+
+ for (n = 0; ngx_syslog_priorities[n].name.len != 0; n++) {
+ if (ngx_strncmp(priority->data, ngx_syslog_priorities[n].name.data,
+ ngx_syslog_priorities[n].name.len) == 0) {
+ p = ngx_syslog_priorities[n].macro;
+ match = 1;
+ }
+ }
+
+ if (!match) {
+ ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+ "invalid syslog priority \"%V\"", priority);
+ return -1;
+ }
+
+ return p;
+}
+
+
+char *
+ngx_log_set_priority(ngx_conf_t *cf, ngx_str_t *priority, ngx_log_t *log)
+{
+ log->priority = ERR_SYSLOG_PRIORITY;
+
+ if (priority->len == 0) {
+ return NGX_CONF_OK;
+ }
+
+ log->priority = ngx_log_get_priority(cf, priority);
+ if (log->priority == (-1)) {
+ return NGX_CONF_ERROR;
+ }
+
+ return NGX_CONF_OK;
+}
+#endif
char *
@@ -424,6 +557,13 @@ static char *
ngx_error_log(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
ngx_str_t *value, name;
+#if (NGX_ENABLE_SYSLOG)
+ u_char *off = NULL;
+ ngx_str_t priority;
+
+ ngx_str_null(&name);
+ ngx_str_null(&priority);
+#endif
if (cf->cycle->new_log.file) {
return "is duplicate";
@@ -431,7 +571,44 @@ ngx_error_log(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
value = cf->args->elts;
+#if (NGX_ENABLE_SYSLOG)
+ if (ngx_strncmp(value[1].data, "syslog", sizeof("syslog") - 1) == 0) {
+ if (!cf->cycle->new_log.syslog_set) {
+ ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+ "You must set the syslog directive and enable it first.");
+ return NGX_CONF_ERROR;
+ }
+
+ cf->cycle->new_log.syslog_on = 1;
+
+ if (value[1].data[sizeof("syslog") - 1] == ':') {
+ priority.len = value[1].len - sizeof("syslog");
+ priority.data = value[1].data + sizeof("syslog");
+
+ off = (u_char *)ngx_strchr(priority.data, (int) '|');
+ if (off != NULL) {
+ priority.len = off - priority.data;
+
+ off++;
+ name.len = value[1].data + value[1].len - off;
+ name.data = off;
+ }
+ }
+ else {
+ if (value[1].len > sizeof("syslog")) {
+ name.len = value[1].len - sizeof("syslog");
+ name.data = value[1].data + sizeof("syslog");
+ }
+ }
+
+ if (ngx_log_set_priority(cf, &priority, &cf->cycle->new_log) == NGX_CONF_ERROR) {
+ return NGX_CONF_ERROR;
+ }
+ }
+ else if (ngx_strcmp(value[1].data, "stderr") == 0) {
+#else
if (ngx_strcmp(value[1].data, "stderr") == 0) {
+#endif
ngx_str_null(&name);
} else {
@@ -452,3 +629,63 @@ ngx_error_log(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
return ngx_log_set_levels(cf, &cf->cycle->new_log);
}
+
+
+#if (NGX_ENABLE_SYSLOG)
+
+#define SYSLOG_IDENT_NAME "nginx"
+
+static char *
+ngx_set_syslog(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
+{
+ char *program;
+ ngx_str_t *value;
+ ngx_int_t facility, match = 0;
+ ngx_uint_t n;
+
+ value = cf->args->elts;
+
+ if (cf->cycle->new_log.syslog_set) {
+ return "is duplicate";
+ }
+
+ cf->cycle->new_log.syslog_set = 1;
+
+ for (n = 0; ngx_syslog_facilities[n].name.len != 0; n++) {
+ if (ngx_strncmp(value[1].data, ngx_syslog_facilities[n].name.data,
+ ngx_syslog_facilities[n].name.len) == 0) {
+ facility = ngx_syslog_facilities[n].macro;
+ match = 1;
+ break;
+ }
+ }
+
+ if (match) {
+ cf->cycle->new_log.facility = facility;
+ cf->cycle->new_log.priority = ERR_SYSLOG_PRIORITY;
+ }
+ else {
+ ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+ "invalid syslog facility \"%V\"", &value[1]);
+ return NGX_CONF_ERROR;
+ }
+
+ program = SYSLOG_IDENT_NAME;
+ if (cf->args->nelts > 2) {
+ program = (char *) value[2].data;
+ }
+
+ openlog(program, LOG_ODELAY, facility);
+
+ return NGX_CONF_OK;
+}
+
+
+void log_exit(ngx_cycle_t *cycle)
+{
+ if (cycle->new_log.syslog_set) {
+ closelog();
+ }
+}
+#endif
+
diff --git a/src/core/ngx_log.h b/src/core/ngx_log.h
index 1054836..14288ee 100644
--- a/src/core/ngx_log.h
+++ b/src/core/ngx_log.h
@@ -11,6 +11,13 @@
#include <ngx_config.h>
#include <ngx_core.h>
+#if (NGX_ENABLE_SYSLOG)
+#include <syslog.h>
+
+#define SYSLOG_FACILITY LOG_LOCAL5
+#define ERR_SYSLOG_PRIORITY LOG_ERR
+#endif
+
#define NGX_LOG_STDERR 0
#define NGX_LOG_EMERG 1
@@ -60,6 +67,13 @@ struct ngx_log_s {
*/
char *action;
+
+#if (NGX_ENABLE_SYSLOG)
+ ngx_int_t priority;
+ ngx_int_t facility;
+ unsigned syslog_on:1; /* unsigned :1 syslog_on */
+ unsigned syslog_set:1; /*unsigned :1 syslog_set */
+#endif
};
@@ -197,6 +211,10 @@ void ngx_cdecl ngx_log_debug_core(ngx_log_t *log, ngx_err_t err,
ngx_log_t *ngx_log_init(u_char *prefix);
ngx_log_t *ngx_log_create(ngx_cycle_t *cycle, ngx_str_t *name);
+#if (NGX_ENABLE_SYSLOG)
+ngx_int_t ngx_log_get_priority(ngx_conf_t *cf, ngx_str_t *priority);
+char * ngx_log_set_priority(ngx_conf_t *cf, ngx_str_t *priority, ngx_log_t *log);
+#endif
char *ngx_log_set_levels(ngx_conf_t *cf, ngx_log_t *log);
void ngx_cdecl ngx_log_abort(ngx_err_t err, const char *fmt, ...);
void ngx_cdecl ngx_log_stderr(ngx_err_t err, const char *fmt, ...);
diff --git a/src/http/modules/ngx_http_log_module.c b/src/http/modules/ngx_http_log_module.c
index e6a7fdb..51c4384 100644
--- a/src/http/modules/ngx_http_log_module.c
+++ b/src/http/modules/ngx_http_log_module.c
@@ -8,6 +8,11 @@
#include <ngx_core.h>
#include <ngx_http.h>
+#if (NGX_ENABLE_SYSLOG)
+#include <syslog.h>
+
+#define HTTP_SYSLOG_PRIORITY LOG_NOTICE
+#endif
typedef struct ngx_http_log_op_s ngx_http_log_op_t;
@@ -51,6 +56,11 @@ typedef struct {
time_t disk_full_time;
time_t error_log_time;
ngx_http_log_fmt_t *format;
+
+#if (NGX_ENABLE_SYSLOG)
+ ngx_int_t priority;
+ unsigned syslog_on:1; /* unsigned :1 syslog_on */
+#endif
} ngx_http_log_t;
@@ -318,11 +328,27 @@ ngx_http_log_write(ngx_http_request_t *r, ngx_http_log_t *log, u_char *buf,
time_t now;
ssize_t n;
ngx_err_t err;
-
+
+#if (NGX_ENABLE_SYSLOG)
+ n = 0;
+ if (log->syslog_on) {
+ syslog(log->priority, "%.*s", (int)len, buf);
+ }
+#endif
+
if (log->script == NULL) {
name = log->file->name.data;
+#if (NGX_ENABLE_SYSLOG)
+ if (name != NULL) {
+ n = ngx_write_fd(log->file->fd, buf, len);
+ }
+ else {
+ n = len;
+ }
+#else
n = ngx_write_fd(log->file->fd, buf, len);
+#endif
} else {
name = NULL;
n = ngx_http_log_script_write(r, log->script, &name, buf, len);
@@ -836,6 +862,10 @@ ngx_http_log_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
log->script = NULL;
log->disk_full_time = 0;
log->error_log_time = 0;
+#if (NGX_ENABLE_SYSLOG)
+ log->priority = HTTP_SYSLOG_PRIORITY;
+ log->syslog_on = 0;
+#endif
lmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_log_module);
fmt = lmcf->formats.elts;
@@ -861,6 +891,13 @@ ngx_http_log_set_log(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
ngx_http_log_main_conf_t *lmcf;
ngx_http_script_compile_t sc;
+#if (NGX_ENABLE_SYSLOG)
+ u_char *off;
+ ngx_str_t priority;
+ ngx_uint_t syslog_on = 0;
+ name = priority = (ngx_str_t)ngx_null_string;
+#endif
+
value = cf->args->elts;
if (ngx_strcmp(value[1].data, "off") == 0) {
@@ -873,6 +910,38 @@ ngx_http_log_set_log(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
"invalid parameter \"%V\"", &value[2]);
return NGX_CONF_ERROR;
}
+#if (NGX_ENABLE_SYSLOG)
+ else if (ngx_strncmp(value[1].data, "syslog", sizeof("syslog") - 1) == 0) {
+ if (!cf->cycle->new_log.syslog_set) {
+ ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+ "You must set the syslog directive and enable it first.");
+ return NGX_CONF_ERROR;
+ }
+
+ syslog_on = 1;
+ if (value[1].data[sizeof("syslog") - 1] == ':') {
+ priority.len = value[1].len - sizeof("syslog");
+ priority.data = value[1].data + sizeof("syslog");
+
+ off = (u_char*) ngx_strchr(priority.data, '|');
+ if (off != NULL) {
+ priority.len = off - priority.data;
+
+ off++;
+ name.len = value[1].data + value[1].len - off;
+ name.data = off;
+ }
+ }
+ else {
+ if (value[1].len > sizeof("syslog")) {
+ name.len = value[1].len - sizeof("syslog");
+ name.data = value[1].data + sizeof("syslog");
+ }
+ }
+ } else {
+ name = value[1];
+ }
+#endif
if (llcf->logs == NULL) {
llcf->logs = ngx_array_create(cf->pool, 2, sizeof(ngx_http_log_t));
@@ -890,6 +959,52 @@ ngx_http_log_set_log(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
ngx_memzero(log, sizeof(ngx_http_log_t));
+#if (NGX_ENABLE_SYSLOG)
+ log->syslog_on = syslog_on;
+
+ if (priority.len == 0) {
+ log->priority = HTTP_SYSLOG_PRIORITY;
+ }
+ else {
+ log->priority = ngx_log_get_priority(cf, &priority);
+ }
+
+ if (name.len != 0) {
+ n = ngx_http_script_variables_count(&name);
+
+ if (n == 0) {
+ log->file = ngx_conf_open_file(cf->cycle, &name);
+ if (log->file == NULL) {
+ return NGX_CONF_ERROR;
+ }
+ } else {
+ if (ngx_conf_full_name(cf->cycle, &name, 0) != NGX_OK) {
+ return NGX_CONF_ERROR;
+ }
+ log->script = ngx_pcalloc(cf->pool, sizeof(ngx_http_log_script_t));
+ if (log->script == NULL) {
+ return NGX_CONF_ERROR;
+ }
+ ngx_memzero(&sc, sizeof(ngx_http_script_compile_t));
+ sc.cf = cf;
+ sc.source = &name;
+ sc.lengths = &log->script->lengths;
+ sc.values = &log->script->values;
+ sc.variables = n;
+ sc.complete_lengths = 1;
+ sc.complete_values = 1;
+ if (ngx_http_script_compile(&sc) != NGX_OK) {
+ return NGX_CONF_ERROR;
+ }
+ }
+ }
+ else {
+ log->file = ngx_conf_open_file(cf->cycle, &name);
+ if (log->file == NULL) {
+ return NGX_CONF_ERROR;
+ }
+ }
+#else
n = ngx_http_script_variables_count(&value[1]);
if (n == 0) {
@@ -897,7 +1012,7 @@ ngx_http_log_set_log(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
if (log->file == NULL) {
return NGX_CONF_ERROR;
}
-
+
} else {
if (ngx_conf_full_name(cf->cycle, &value[1], 0) != NGX_OK) {
return NGX_CONF_ERROR;
@@ -922,6 +1037,7 @@ ngx_http_log_set_log(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
return NGX_CONF_ERROR;
}
}
+#endif
if (cf->args->nelts >= 3) {
name = value[2];
diff --git a/src/http/ngx_http_core_module.c b/src/http/ngx_http_core_module.c
index bbb9311..fc08c65 100644
--- a/src/http/ngx_http_core_module.c
+++ b/src/http/ngx_http_core_module.c
@@ -1410,6 +1410,9 @@ ngx_http_update_location_config(ngx_http_request_t *r)
if (r == r->main) {
r->connection->log->file = clcf->error_log->file;
+#if (NGX_ENABLE_SYSLOG)
+ r->connection->log->priority = clcf->error_log->priority;
+#endif
if (!(r->connection->log->log_level & NGX_LOG_DEBUG_CONNECTION)) {
r->connection->log->log_level = clcf->error_log->log_level;
@@ -4440,17 +4443,72 @@ ngx_http_core_error_log(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
ngx_str_t *value;
+#if (NGX_ENABLE_SYSLOG)
+ u_char *off = NULL;
+ ngx_int_t syslog_on = 0;
+ ngx_str_t name, priority;
+
+ name = priority = (ngx_str_t) ngx_null_string;
+#endif
+
if (clcf->error_log) {
return "is duplicate";
}
value = cf->args->elts;
+#if (NGX_ENABLE_SYSLOG)
+ if (ngx_strncmp(value[1].data, "syslog", sizeof("syslog") - 1) == 0) {
+ if (!cf->cycle->new_log.syslog_set) {
+ ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+ "You must set the syslog directive and enable it first.");
+ return NGX_CONF_ERROR;
+ }
+
+ syslog_on = 1;
+
+ if (value[1].data[sizeof("syslog") - 1] == ':') {
+ priority.len = value[1].len - sizeof("syslog");
+ priority.data = value[1].data + sizeof("syslog");
+
+ off = (u_char*) ngx_strchr(priority.data, '|');
+ if (off != NULL) {
+ priority.len = off - priority.data;
+
+ off++;
+ name.len = value[1].data + value[1].len - off;
+ name.data = off;
+ }
+ }
+ else {
+ if (value[1].len > sizeof("syslog")) {
+ name.len = value[1].len - sizeof("syslog");
+ name.data = value[1].data + sizeof("syslog");
+ }
+ }
+ } else {
+ name = value[1];
+ }
+
+ clcf->error_log = ngx_log_create(cf->cycle, &name);
+#else
clcf->error_log = ngx_log_create(cf->cycle, &value[1]);
+#endif
if (clcf->error_log == NULL) {
return NGX_CONF_ERROR;
}
+#if (NGX_ENABLE_SYSLOG)
+ if (syslog_on) {
+ clcf->error_log->syslog_on = 1;
+ if (ngx_log_set_priority(cf, &priority, clcf->error_log) == NGX_CONF_ERROR) {
+ return NGX_CONF_ERROR;
+ }
+ }
+
+ clcf->error_log->log_level = 0;
+#endif
+
if (cf->args->nelts == 2) {
clcf->error_log->log_level = NGX_LOG_ERR;
return NGX_CONF_OK;
diff --git a/src/http/ngx_http_request.c b/src/http/ngx_http_request.c
index d11b13e..f787e0a 100644
--- a/src/http/ngx_http_request.c
+++ b/src/http/ngx_http_request.c
@@ -432,6 +432,9 @@ ngx_http_init_request(ngx_event_t *rev)
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
c->log->file = clcf->error_log->file;
+#if (NGX_ENABLE_SYSLOG)
+ c->log->priority = clcf->error_log->priority;
+#endif
if (!(c->log->log_level & NGX_LOG_DEBUG_CONNECTION)) {
c->log->log_level = clcf->error_log->log_level;
}
@@ -1765,6 +1768,9 @@ found:
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
r->connection->log->file = clcf->error_log->file;
+#if (NGX_ENABLE_SYSLOG)
+ r->connection->log->priority = clcf->error_log->priority;
+#endif
if (!(r->connection->log->log_level & NGX_LOG_DEBUG_CONNECTION)) {
r->connection->log->log_level = clcf->error_log->log_level;