Autoindex: improved ngx_de_info() error handling.
This allows to build a directory listing whenever a loop exists in symbolic
link resolution of the path argument.
diff --git a/src/http/modules/ngx_http_autoindex_module.c b/src/http/modules/ngx_http_autoindex_module.c
index e21d8d7..2214551 100644
--- a/src/http/modules/ngx_http_autoindex_module.c
+++ b/src/http/modules/ngx_http_autoindex_module.c
@@ -304,7 +304,7 @@
if (ngx_de_info(filename, &dir) == NGX_FILE_ERROR) {
err = ngx_errno;
- if (err != NGX_ENOENT) {
+ if (err != NGX_ENOENT && err != NGX_ELOOP) {
ngx_log_error(NGX_LOG_CRIT, r->connection->log, err,
ngx_de_info_n " \"%s\" failed", filename);
diff --git a/src/os/unix/ngx_errno.h b/src/os/unix/ngx_errno.h
index 125087e..1497c5f 100644
--- a/src/os/unix/ngx_errno.h
+++ b/src/os/unix/ngx_errno.h
@@ -49,10 +49,10 @@
#define NGX_ECANCELED ECANCELED
#define NGX_EILSEQ EILSEQ
#define NGX_ENOMOREFILES 0
+#define NGX_ELOOP ELOOP
#if (NGX_HAVE_OPENAT)
#define NGX_EMLINK EMLINK
-#define NGX_ELOOP ELOOP
#endif
#if (__hpux__)
diff --git a/src/os/win32/ngx_errno.h b/src/os/win32/ngx_errno.h
index 090ba1b..decb6fe 100644
--- a/src/os/win32/ngx_errno.h
+++ b/src/os/win32/ngx_errno.h
@@ -51,6 +51,7 @@
#define NGX_EHOSTUNREACH WSAEHOSTUNREACH
#define NGX_ENOMOREFILES ERROR_NO_MORE_FILES
#define NGX_EILSEQ ERROR_NO_UNICODE_TRANSLATION
+#define NGX_ELOOP 0
#define NGX_EALREADY WSAEALREADY
#define NGX_EINVAL WSAEINVAL