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what the hell is acl_t

To: linux-xfs@xxxxxxxxxxx
Subject: what the hell is acl_t
From: ankur mattoo <coolpal53@xxxxxxxxx>
Date: Tue, 23 Mar 2004 00:14:28 -0800 (PST)
Sender: linux-xfs-bounce@xxxxxxxxxxx
hi 
im currently working on stakable file system wrapfs.
1.>Well im writing a kernel code in which im supposed
to receive ioctl argument from the user space which is
supposed to be of the type acl_t. I mean:

<<user code>>

acl_t the_acl;
ioctl(File_Desc,FIST_IOCTL_SET_SEC_DESC,the_acl)

now the kernel code doesn't seem to recognize acl_t
and reports an error. Im compiling the kernel code
with -lacl
flag and there is complete acl and xattr support in
the kernel.[linux-2.4.23 with ea patch]
what can i do bout it.

2.>In the kernel code i wanna set the acls of a file
using setxattr.Consider i have a inode object
ankinode;

what name:value pair should i write corresponding to
an acl_t perm;

I mean i have the variable perm and i gotta run
setxattr. How can i do that???
Any help!!!
thanks
ankur
-BE


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