From: Sage Weil <sage@inktank.com>
Date: Mon, 29 Oct 2012 15:33:52 +0000 (-0700)
Subject: os/chain_xattr: fix listxattr buffer size
X-Git-Tag: v0.55~188^2~5
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=b7f89cb7b0f51df9b0264c20acfab863bf6a655f;p=ceph.git

os/chain_xattr: fix listxattr buffer size

Intenrally allocate 2x the raw listxattr result; tell the user the same.

Signed-off-by: Sage Weil <sage@inktank.com>
---

diff --git a/src/os/chain_xattr.cc b/src/os/chain_xattr.cc
index bab02726c0e..ea9bcdd202f 100644
--- a/src/os/chain_xattr.cc
+++ b/src/os/chain_xattr.cc
@@ -335,7 +335,7 @@ int chain_listxattr(const char *fn, char *names, size_t len) {
   int r;
 
   if (!len)
-    return ::ceph_os_listxattr(fn, names, len);
+    return ::ceph_os_listxattr(fn, names, len) * 2;
 
   r = ::ceph_os_listxattr(fn, 0, 0);
   if (r < 0)
@@ -381,7 +381,7 @@ int chain_flistxattr(int fd, char *names, size_t len) {
   int r;
 
   if (!len)
-    return ::ceph_os_flistxattr(fd, names, len);
+    return ::ceph_os_flistxattr(fd, names, len) * 2;
 
   r = ::ceph_os_flistxattr(fd, 0, 0);
   if (r < 0)