From: Yan, Zheng <zyan@redhat.com>
Date: Fri, 31 Jul 2015 09:20:14 +0000 (+0800)
Subject: os/chain_xattr: set CHAIN_XATTR_MAX_NAME_LEN according to max length of xattr name
X-Git-Tag: v9.1.0~259^2~8
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=c092b4fcc4ca1b8d66f93ca326f3abeba85619b0;p=ceph.git

os/chain_xattr: set CHAIN_XATTR_MAX_NAME_LEN according to max length of xattr name

Signed-off-by: Yan, Zheng <zyan@redhat.com>
---

diff --git a/src/os/chain_xattr.h b/src/os/chain_xattr.h
index 2d77568012ce..65460b2aa6e4 100644
--- a/src/os/chain_xattr.h
+++ b/src/os/chain_xattr.h
@@ -8,7 +8,16 @@
 
 #include <errno.h>
 
+#if defined(__linux__)
+#include <limits.h>
+#define CHAIN_XATTR_MAX_NAME_LEN ((XATTR_NAME_MAX + 1) / 2)
+#elif defined(__APPLE__) || defined(__FreeBSD__)
+#include <sys/xattr.h>
+#define CHAIN_XATTR_MAX_NAME_LEN ((XATTR_MAXNAMELEN + 1) / 2)
+#else
 #define CHAIN_XATTR_MAX_NAME_LEN  128
+#endif
+
 #define CHAIN_XATTR_MAX_BLOCK_LEN 2048
 
 /*