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List:       v9fs-developer
Subject:    [V9fs-developer] syscall setxattr inside kernel 3.14-rc1 returns size of set xattr
From:       DENIEL Philippe <philippe.deniel () cea ! fr>
Date:       2014-02-18 13:15:22
Message-ID: 53035CEA.6070905 () cea ! fr
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Hi,

I run v9fs as a client on a F20, in front of my Ganesha server (see 
http://github.com/nfs-ganesha for details), using 9p.2000L
My acl non-regression test showed errors when I installed a recent 
3.14-rc1 kernel (I got it from kernel.org) on my F20 box.
Investigation showed that the setfacl command line got messy because 
setxattr() (called from acl_set_modify() in libattr.so) return a 
non-zero value when successful. Further investigation showed that this 
behavior seems to come from v9fs_fid_xattr_set() inside fs/9p/xattr.c in 
the kernel's source.

It seems like setxattr syscall does now return the size of the set 
xattr, and that seems to be the root cause of my problem. I do not 
believe that this change in setxattr is no bug, but a new feature. So I 
guess I should patch my libattr and/or glibc to use xattr/acl with 
kernel 3.14-rc1.
Question is : where could I get the right version of libattr source 
treee (eventually with libacl if needed).

     Regards

         Philippe

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