[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Acl-devel] Getting/setting default ACLs through file descriptors
|
From: |
Michael Orlitzky |
|
Subject: |
Re: [Acl-devel] Getting/setting default ACLs through file descriptors |
|
Date: |
Wed, 28 Feb 2018 09:21:47 -0500 |
|
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.5.2 |
On 02/28/2018 04:29 AM, Andreas Grünbacher wrote:
>
> The reason acl_set_fd doesn't take a type argument is historic; it was
> specified that way in IEEE Std 1003.1e draft 17.
>
> What you can do is use fgetxattr and fsetxattr directly. The attribute
> names are defined in <linux/xattr.h> as XATTR_NAME_POSIX_ACL_ACCESS and
> XATTR_NAME_POSIX_ACL_DEFAULT.
>
Ah, I see. I thought about copying the implementation of acl_set_fd()
and changing the ACL_EA_ACCESS to ACL_EA_DEFAULT, but that involves
copy/pasting half of libacl.
But so long as I don't need to modify or inspect the parent's default
ACL, I can simply treat them as xattrs to be copied verbatim. Thanks,
I'll give it a try.