From 9335f7f7e6931c4ec830597cb1cdecb026508b59 Mon Sep 17 00:00:00 2001
From: tengshuangshuang <tengshuangshuang@xiaomi.com>
Date: Mon, 25 Aug 2025 22:41:42 +0800
Subject: [PATCH] fpathcof: _PC_PRIO_IO value of -1 means that unsupported

pse52 test error:fpathconf failed, errno = 38 (ENOSYS)

Signed-off-by: tengshuangshuang <tengshuangshuang@xiaomi.com>
---
 libs/libc/unistd/lib_pathconf.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libs/libc/unistd/lib_pathconf.c b/libs/libc/unistd/lib_pathconf.c
index 69d750a62f5..fa9387fbc24 100644
--- a/libs/libc/unistd/lib_pathconf.c
+++ b/libs/libc/unistd/lib_pathconf.c
@@ -136,6 +136,9 @@ long fpathconf(int fildes, int name)
       case _PC_MAX_INPUT:
         return _POSIX_MAX_INPUT;
 
+      case _PC_PRIO_IO:
+        return -1;
+
       default:
 
         /* Assume valid but not implemented for the time being */