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From: Austin S Hemmelgarn <ahferroin7-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: "J. Bruce Fields" <bfields-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
Cc: Andreas Gruenbacher
	<agruenba-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-nfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-cifs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-security-module-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [RFC v7 13/41] richacl: Check if an acl is equivalent to a file mode
Date: Mon, 21 Sep 2015 13:00:40 -0400	[thread overview]
Message-ID: <560037B8.1070803@gmail.com> (raw)
In-Reply-To: <20150921143817.GA11256-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>

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On 2015-09-21 10:38, J. Bruce Fields wrote:
> On Mon, Sep 21, 2015 at 09:59:07AM -0400, Austin S Hemmelgarn wrote:
>> On 2015-09-17 20:56, J. Bruce Fields wrote:
>>> On Thu, Sep 17, 2015 at 02:22:19PM -0400, bfields wrote:
>>>> On Sat, Sep 05, 2015 at 12:27:08PM +0200, Andreas Gruenbacher wrote:
>>>>> ACLs are considered equivalent to file modes if they only consist of
>>>>> owner@, group@, and everyone@ entries, the owner@ permissions do not
>>>>> depend on whether the owner is a member in the owning group, and no
>>>>> inheritance flags are set.  This test is used to avoid storing richacls
>>>>> if the acl can be computed from the file permission bits.
>>>>
>>>> We're assuming here that it's OK for us to silently rearrange an ACL as
>>>> long as the result is still equivalent (in the sense that the permission
>>>> algorithm would always produce the same result).
>>>>
>>>> I guess that's OK by me, but it might violate user expectations in some
>>>> simple common cases, so may be worth mentioning in documentation
>>>> someplace if we don't already.
>>>
>>> Also your notion of mode-equivalence here is interesting, it's actually
>>> a strict subset of the ACLs that produce the same permission results as
>>> a mode.  (For example, everyone:rwx,bfields:rwx is equivalent to 0777
>>> but won't be considered mode-equivalent by this algorithm.)
>> Although it could also be equivalent to 0707, or (if bfields is the
>> group name also) 0077, or even (if bfields isn't the group or owner
>> of the file) 0007.
>
> I disagree.  I think you've misread my example ACL (may be my sloppy
> notation, sorry) or misunderstood the ACL evalutation algorithm.
I'm just saying in general that there isn't enough information without 
knowing not only the ACL, but also the ownership information, to 
determine exact mode-equivalence.  I didn't phrase it well to convey 
this though.

I can kind of understand the more I think about it why an ACL only 
covering the owner and everyone permissions would not be considered 
equivalent to 0777 (strictly speaking it's 0707, even though (I think) 
this behaves like 0777).
>
>> Mode equivalence get's even trickier when you
>> throw in permissions just beyond rwx (for example, by Windows
>> standards, the usage of the execute bit on directories is weird
>> (they have a separate permission in their ACE's for directory
>> listing), or by VMS standards, write permission on a directory
>> doesn't mean that you can delete things in it (VMS actually had a
>> separate bit for the delete permission, and even had separate
>> permissions for system access)).
>
> I believe these patches handle all of those details correctly; if you
> see anything to the contrary, please do speak up.
I see absolutely nothing wrong with them, I was just trying to point out 
that when you consider all the permissions allowed under the proposed 
system, mode-equivalence get's really tricky.
> Note that Windows also has a DELETE bit, though it is ORed with the
> directory permission not ANDed (so it is sufficient for the directory to
> allow MAY_DELETE_CHILD *or* for the file to allow DELETE).
Yeah, which has ironically caused issues for a number of people I know 
before.  There's all kinds of weird things you can do with Windows 
ACE's, for example, I'm pretty sure it's possible to let someone read 
just the file contents, but nothing else about it, or make it so that 
someone can modify the timestamps on it but not do anything else to it.
>
> (But I believe you're correct that VMS required both permissions, if
> e.g. http://www.djesys.com/vms/freevms/mentor/vms_prot.html is correct).
>
> --b.
>
>>>
>>> I think the choices you've made probably make the most sense, they just
>>> wouldn't have been obvious to me.  Anyway, so, OK by me:
>>>
>>> 	Reviewed-by: J. Bruce Fields <bfields-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
>>>
>>> --b.
>>>
>>>>
>>>> --b.
>>>>
>>>>>
>>>>> Signed-off-by: Andreas Gruenbacher <agruenba-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
>>>>> ---
>>>>>   fs/richacl_base.c       | 104 ++++++++++++++++++++++++++++++++++++++++++++++++
>>>>>   include/linux/richacl.h |   1 +
>>>>>   2 files changed, 105 insertions(+)
>>>>>
>>>>> diff --git a/fs/richacl_base.c b/fs/richacl_base.c
>>>>> index 3163152..106e988 100644
>>>>> --- a/fs/richacl_base.c
>>>>> +++ b/fs/richacl_base.c
>>>>> @@ -379,3 +379,107 @@ richacl_chmod(struct richacl *acl, mode_t mode)
>>>>>   	return clone;
>>>>>   }
>>>>>   EXPORT_SYMBOL_GPL(richacl_chmod);
>>>>> +
>>>>> +/**
>>>>> + * richacl_equiv_mode  -  compute the mode equivalent of @acl
>>>>> + *
>>>>> + * An acl is considered equivalent to a file mode if it only consists of
>>>>> + * owner@, group@, and everyone@ entries and the owner@ permissions do not
>>>>> + * depend on whether the owner is a member in the owning group.
>>>>> + */
>>>>> +int
>>>>> +richacl_equiv_mode(const struct richacl *acl, mode_t *mode_p)
>>>>> +{
>>>>> +	mode_t mode = *mode_p;
>>>>> +
>>>>> +	/*
>>>>> +	 * The RICHACE_DELETE_CHILD flag is meaningless for non-directories, so
>>>>> +	 * we ignore it.
>>>>> +	 */
>>>>> +	unsigned int x = S_ISDIR(mode) ? 0 : RICHACE_DELETE_CHILD;
>>>>> +	struct {
>>>>> +		unsigned int allowed;
>>>>> +		unsigned int defined;  /* allowed or denied */
>>>>> +	} owner = {
>>>>> +		.defined = RICHACE_POSIX_ALWAYS_ALLOWED |
>>>>> +			   RICHACE_POSIX_OWNER_ALLOWED  | x,
>>>>> +	}, group = {
>>>>> +		.defined = RICHACE_POSIX_ALWAYS_ALLOWED | x,
>>>>> +	}, everyone = {
>>>>> +		.defined = RICHACE_POSIX_ALWAYS_ALLOWED | x,
>>>>> +	};
>>>>> +	const struct richace *ace;
>>>>> +
>>>>> +	if (acl->a_flags & ~(RICHACL_WRITE_THROUGH | RICHACL_MASKED))
>>>>> +		return -1;
>>>>> +
>>>>> +	richacl_for_each_entry(ace, acl) {
>>>>> +		if (ace->e_flags & ~RICHACE_SPECIAL_WHO)
>>>>> +			return -1;
>>>>> +
>>>>> +		if (richace_is_owner(ace) || richace_is_everyone(ace)) {
>>>>> +			x = ace->e_mask & ~owner.defined;
>>>>> +			if (richace_is_allow(ace)) {
>>>>> +				unsigned int group_denied =
>>>>> +					group.defined & ~group.allowed;
>>>>> +
>>>>> +				if (x & group_denied)
>>>>> +					return -1;
>>>>> +				owner.allowed |= x;
>>>>> +			} else /* if (richace_is_deny(ace)) */ {
>>>>> +				if (x & group.allowed)
>>>>> +					return -1;
>>>>> +			}
>>>>> +			owner.defined |= x;
>>>>> +
>>>>> +			if (richace_is_everyone(ace)) {
>>>>> +				x = ace->e_mask;
>>>>> +				if (richace_is_allow(ace)) {
>>>>> +					group.allowed |=
>>>>> +						x & ~group.defined;
>>>>> +					everyone.allowed |=
>>>>> +						x & ~everyone.defined;
>>>>> +				}
>>>>> +				group.defined |= x;
>>>>> +				everyone.defined |= x;
>>>>> +			}
>>>>> +		} else if (richace_is_group(ace)) {
>>>>> +			x = ace->e_mask & ~group.defined;
>>>>> +			if (richace_is_allow(ace))
>>>>> +				group.allowed |= x;
>>>>> +			group.defined |= x;
>>>>> +		} else
>>>>> +			return -1;
>>>>> +	}
>>>>> +
>>>>> +	if (group.allowed & ~owner.defined)
>>>>> +		return -1;
>>>>> +
>>>>> +	if (acl->a_flags & RICHACL_MASKED) {
>>>>> +		if (acl->a_flags & RICHACL_WRITE_THROUGH) {
>>>>> +			owner.allowed = acl->a_owner_mask;
>>>>> +			everyone.allowed = acl->a_other_mask;
>>>>> +		} else {
>>>>> +			owner.allowed &= acl->a_owner_mask;
>>>>> +			everyone.allowed &= acl->a_other_mask;
>>>>> +		}
>>>>> +		group.allowed &= acl->a_group_mask;
>>>>> +	}
>>>>> +
>>>>> +	mode = (mode & ~S_IRWXUGO) |
>>>>> +	       (richacl_mask_to_mode(owner.allowed) << 6) |
>>>>> +	       (richacl_mask_to_mode(group.allowed) << 3) |
>>>>> +		richacl_mask_to_mode(everyone.allowed);
>>>>> +
>>>>> +	/* Mask flags we can ignore */
>>>>> +	x = S_ISDIR(mode) ? 0 : RICHACE_DELETE_CHILD;
>>>>> +
>>>>> +	if (((richacl_mode_to_mask(mode >> 6) ^ owner.allowed)    & ~x) ||
>>>>> +	    ((richacl_mode_to_mask(mode >> 3) ^ group.allowed)    & ~x) ||
>>>>> +	    ((richacl_mode_to_mask(mode)      ^ everyone.allowed) & ~x))
>>>>> +		return -1;
>>>>> +
>>>>> +	*mode_p = mode;
>>>>> +	return 0;
>>>>> +}
>>>>> +EXPORT_SYMBOL_GPL(richacl_equiv_mode);
>>>>> diff --git a/include/linux/richacl.h b/include/linux/richacl.h
>>>>> index d4a576c..6535ce5 100644
>>>>> --- a/include/linux/richacl.h
>>>>> +++ b/include/linux/richacl.h
>>>>> @@ -304,6 +304,7 @@ extern unsigned int richacl_mode_to_mask(mode_t);
>>>>>   extern unsigned int richacl_want_to_mask(unsigned int);
>>>>>   extern void richacl_compute_max_masks(struct richacl *);
>>>>>   extern struct richacl *richacl_chmod(struct richacl *, mode_t);
>>>>> +extern int richacl_equiv_mode(const struct richacl *, mode_t *);
>>>>>
>>>>>   /* richacl_inode.c */
>>>>>   extern int richacl_permission(struct inode *, const struct richacl *, int);
>>>>> --
>>>>> 2.4.3
>>>>>
>>>>> --
>>>>> To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
>>>>> the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
>>>>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>>> --
>>> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
>>> the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
>>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>>> Please read the FAQ at  http://www.tux.org/lkml/
>>>
>>
>>
>
>



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WARNING: multiple messages have this Message-ID (diff)
From: Austin S Hemmelgarn <ahferroin7@gmail.com>
To: "J. Bruce Fields" <bfields@fieldses.org>
Cc: Andreas Gruenbacher <agruenba@redhat.com>,
	linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	linux-nfs@vger.kernel.org, linux-api@vger.kernel.org,
	linux-cifs@vger.kernel.org,
	linux-security-module@vger.kernel.org
Subject: Re: [RFC v7 13/41] richacl: Check if an acl is equivalent to a file mode
Date: Mon, 21 Sep 2015 13:00:40 -0400	[thread overview]
Message-ID: <560037B8.1070803@gmail.com> (raw)
In-Reply-To: <20150921143817.GA11256@fieldses.org>

[-- Attachment #1: Type: text/plain, Size: 9318 bytes --]

On 2015-09-21 10:38, J. Bruce Fields wrote:
> On Mon, Sep 21, 2015 at 09:59:07AM -0400, Austin S Hemmelgarn wrote:
>> On 2015-09-17 20:56, J. Bruce Fields wrote:
>>> On Thu, Sep 17, 2015 at 02:22:19PM -0400, bfields wrote:
>>>> On Sat, Sep 05, 2015 at 12:27:08PM +0200, Andreas Gruenbacher wrote:
>>>>> ACLs are considered equivalent to file modes if they only consist of
>>>>> owner@, group@, and everyone@ entries, the owner@ permissions do not
>>>>> depend on whether the owner is a member in the owning group, and no
>>>>> inheritance flags are set.  This test is used to avoid storing richacls
>>>>> if the acl can be computed from the file permission bits.
>>>>
>>>> We're assuming here that it's OK for us to silently rearrange an ACL as
>>>> long as the result is still equivalent (in the sense that the permission
>>>> algorithm would always produce the same result).
>>>>
>>>> I guess that's OK by me, but it might violate user expectations in some
>>>> simple common cases, so may be worth mentioning in documentation
>>>> someplace if we don't already.
>>>
>>> Also your notion of mode-equivalence here is interesting, it's actually
>>> a strict subset of the ACLs that produce the same permission results as
>>> a mode.  (For example, everyone:rwx,bfields:rwx is equivalent to 0777
>>> but won't be considered mode-equivalent by this algorithm.)
>> Although it could also be equivalent to 0707, or (if bfields is the
>> group name also) 0077, or even (if bfields isn't the group or owner
>> of the file) 0007.
>
> I disagree.  I think you've misread my example ACL (may be my sloppy
> notation, sorry) or misunderstood the ACL evalutation algorithm.
I'm just saying in general that there isn't enough information without 
knowing not only the ACL, but also the ownership information, to 
determine exact mode-equivalence.  I didn't phrase it well to convey 
this though.

I can kind of understand the more I think about it why an ACL only 
covering the owner and everyone permissions would not be considered 
equivalent to 0777 (strictly speaking it's 0707, even though (I think) 
this behaves like 0777).
>
>> Mode equivalence get's even trickier when you
>> throw in permissions just beyond rwx (for example, by Windows
>> standards, the usage of the execute bit on directories is weird
>> (they have a separate permission in their ACE's for directory
>> listing), or by VMS standards, write permission on a directory
>> doesn't mean that you can delete things in it (VMS actually had a
>> separate bit for the delete permission, and even had separate
>> permissions for system access)).
>
> I believe these patches handle all of those details correctly; if you
> see anything to the contrary, please do speak up.
I see absolutely nothing wrong with them, I was just trying to point out 
that when you consider all the permissions allowed under the proposed 
system, mode-equivalence get's really tricky.
> Note that Windows also has a DELETE bit, though it is ORed with the
> directory permission not ANDed (so it is sufficient for the directory to
> allow MAY_DELETE_CHILD *or* for the file to allow DELETE).
Yeah, which has ironically caused issues for a number of people I know 
before.  There's all kinds of weird things you can do with Windows 
ACE's, for example, I'm pretty sure it's possible to let someone read 
just the file contents, but nothing else about it, or make it so that 
someone can modify the timestamps on it but not do anything else to it.
>
> (But I believe you're correct that VMS required both permissions, if
> e.g. http://www.djesys.com/vms/freevms/mentor/vms_prot.html is correct).
>
> --b.
>
>>>
>>> I think the choices you've made probably make the most sense, they just
>>> wouldn't have been obvious to me.  Anyway, so, OK by me:
>>>
>>> 	Reviewed-by: J. Bruce Fields <bfields@redhat.com>
>>>
>>> --b.
>>>
>>>>
>>>> --b.
>>>>
>>>>>
>>>>> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
>>>>> ---
>>>>>   fs/richacl_base.c       | 104 ++++++++++++++++++++++++++++++++++++++++++++++++
>>>>>   include/linux/richacl.h |   1 +
>>>>>   2 files changed, 105 insertions(+)
>>>>>
>>>>> diff --git a/fs/richacl_base.c b/fs/richacl_base.c
>>>>> index 3163152..106e988 100644
>>>>> --- a/fs/richacl_base.c
>>>>> +++ b/fs/richacl_base.c
>>>>> @@ -379,3 +379,107 @@ richacl_chmod(struct richacl *acl, mode_t mode)
>>>>>   	return clone;
>>>>>   }
>>>>>   EXPORT_SYMBOL_GPL(richacl_chmod);
>>>>> +
>>>>> +/**
>>>>> + * richacl_equiv_mode  -  compute the mode equivalent of @acl
>>>>> + *
>>>>> + * An acl is considered equivalent to a file mode if it only consists of
>>>>> + * owner@, group@, and everyone@ entries and the owner@ permissions do not
>>>>> + * depend on whether the owner is a member in the owning group.
>>>>> + */
>>>>> +int
>>>>> +richacl_equiv_mode(const struct richacl *acl, mode_t *mode_p)
>>>>> +{
>>>>> +	mode_t mode = *mode_p;
>>>>> +
>>>>> +	/*
>>>>> +	 * The RICHACE_DELETE_CHILD flag is meaningless for non-directories, so
>>>>> +	 * we ignore it.
>>>>> +	 */
>>>>> +	unsigned int x = S_ISDIR(mode) ? 0 : RICHACE_DELETE_CHILD;
>>>>> +	struct {
>>>>> +		unsigned int allowed;
>>>>> +		unsigned int defined;  /* allowed or denied */
>>>>> +	} owner = {
>>>>> +		.defined = RICHACE_POSIX_ALWAYS_ALLOWED |
>>>>> +			   RICHACE_POSIX_OWNER_ALLOWED  | x,
>>>>> +	}, group = {
>>>>> +		.defined = RICHACE_POSIX_ALWAYS_ALLOWED | x,
>>>>> +	}, everyone = {
>>>>> +		.defined = RICHACE_POSIX_ALWAYS_ALLOWED | x,
>>>>> +	};
>>>>> +	const struct richace *ace;
>>>>> +
>>>>> +	if (acl->a_flags & ~(RICHACL_WRITE_THROUGH | RICHACL_MASKED))
>>>>> +		return -1;
>>>>> +
>>>>> +	richacl_for_each_entry(ace, acl) {
>>>>> +		if (ace->e_flags & ~RICHACE_SPECIAL_WHO)
>>>>> +			return -1;
>>>>> +
>>>>> +		if (richace_is_owner(ace) || richace_is_everyone(ace)) {
>>>>> +			x = ace->e_mask & ~owner.defined;
>>>>> +			if (richace_is_allow(ace)) {
>>>>> +				unsigned int group_denied =
>>>>> +					group.defined & ~group.allowed;
>>>>> +
>>>>> +				if (x & group_denied)
>>>>> +					return -1;
>>>>> +				owner.allowed |= x;
>>>>> +			} else /* if (richace_is_deny(ace)) */ {
>>>>> +				if (x & group.allowed)
>>>>> +					return -1;
>>>>> +			}
>>>>> +			owner.defined |= x;
>>>>> +
>>>>> +			if (richace_is_everyone(ace)) {
>>>>> +				x = ace->e_mask;
>>>>> +				if (richace_is_allow(ace)) {
>>>>> +					group.allowed |=
>>>>> +						x & ~group.defined;
>>>>> +					everyone.allowed |=
>>>>> +						x & ~everyone.defined;
>>>>> +				}
>>>>> +				group.defined |= x;
>>>>> +				everyone.defined |= x;
>>>>> +			}
>>>>> +		} else if (richace_is_group(ace)) {
>>>>> +			x = ace->e_mask & ~group.defined;
>>>>> +			if (richace_is_allow(ace))
>>>>> +				group.allowed |= x;
>>>>> +			group.defined |= x;
>>>>> +		} else
>>>>> +			return -1;
>>>>> +	}
>>>>> +
>>>>> +	if (group.allowed & ~owner.defined)
>>>>> +		return -1;
>>>>> +
>>>>> +	if (acl->a_flags & RICHACL_MASKED) {
>>>>> +		if (acl->a_flags & RICHACL_WRITE_THROUGH) {
>>>>> +			owner.allowed = acl->a_owner_mask;
>>>>> +			everyone.allowed = acl->a_other_mask;
>>>>> +		} else {
>>>>> +			owner.allowed &= acl->a_owner_mask;
>>>>> +			everyone.allowed &= acl->a_other_mask;
>>>>> +		}
>>>>> +		group.allowed &= acl->a_group_mask;
>>>>> +	}
>>>>> +
>>>>> +	mode = (mode & ~S_IRWXUGO) |
>>>>> +	       (richacl_mask_to_mode(owner.allowed) << 6) |
>>>>> +	       (richacl_mask_to_mode(group.allowed) << 3) |
>>>>> +		richacl_mask_to_mode(everyone.allowed);
>>>>> +
>>>>> +	/* Mask flags we can ignore */
>>>>> +	x = S_ISDIR(mode) ? 0 : RICHACE_DELETE_CHILD;
>>>>> +
>>>>> +	if (((richacl_mode_to_mask(mode >> 6) ^ owner.allowed)    & ~x) ||
>>>>> +	    ((richacl_mode_to_mask(mode >> 3) ^ group.allowed)    & ~x) ||
>>>>> +	    ((richacl_mode_to_mask(mode)      ^ everyone.allowed) & ~x))
>>>>> +		return -1;
>>>>> +
>>>>> +	*mode_p = mode;
>>>>> +	return 0;
>>>>> +}
>>>>> +EXPORT_SYMBOL_GPL(richacl_equiv_mode);
>>>>> diff --git a/include/linux/richacl.h b/include/linux/richacl.h
>>>>> index d4a576c..6535ce5 100644
>>>>> --- a/include/linux/richacl.h
>>>>> +++ b/include/linux/richacl.h
>>>>> @@ -304,6 +304,7 @@ extern unsigned int richacl_mode_to_mask(mode_t);
>>>>>   extern unsigned int richacl_want_to_mask(unsigned int);
>>>>>   extern void richacl_compute_max_masks(struct richacl *);
>>>>>   extern struct richacl *richacl_chmod(struct richacl *, mode_t);
>>>>> +extern int richacl_equiv_mode(const struct richacl *, mode_t *);
>>>>>
>>>>>   /* richacl_inode.c */
>>>>>   extern int richacl_permission(struct inode *, const struct richacl *, int);
>>>>> --
>>>>> 2.4.3
>>>>>
>>>>> --
>>>>> To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
>>>>> the body of a message to majordomo@vger.kernel.org
>>>>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>>> --
>>> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
>>> the body of a message to majordomo@vger.kernel.org
>>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>>> Please read the FAQ at  http://www.tux.org/lkml/
>>>
>>
>>
>
>



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  parent reply	other threads:[~2015-09-21 17:00 UTC|newest]

Thread overview: 188+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-09-05 10:26 [RFC v7 00/41] Richacls Andreas Gruenbacher
2015-09-05 10:26 ` Andreas Gruenbacher
2015-09-05 10:26 ` [RFC v7 04/41] vfs: Make the inode passed to inode_change_ok non-const Andreas Gruenbacher
2015-09-05 10:27 ` [RFC v7 05/41] vfs: Add permission flags for setting file attributes Andreas Gruenbacher
2015-09-05 10:27 ` [RFC v7 06/41] richacl: In-memory representation and helper functions Andreas Gruenbacher
2015-09-05 10:27 ` [RFC v7 07/41] richacl: Permission mapping functions Andreas Gruenbacher
     [not found] ` <1441448856-13478-1-git-send-email-agruenba-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-09-05 10:26   ` [RFC v7 01/41] vfs: Add IS_ACL() and IS_RICHACL() tests Andreas Gruenbacher
2015-09-05 10:26     ` Andreas Gruenbacher
2015-09-05 10:26   ` [RFC v7 02/41] vfs: Add MAY_CREATE_FILE and MAY_CREATE_DIR permission flags Andreas Gruenbacher
2015-09-05 10:26     ` Andreas Gruenbacher
2015-09-05 10:26   ` [RFC v7 03/41] vfs: Add MAY_DELETE_SELF and MAY_DELETE_CHILD " Andreas Gruenbacher
2015-09-05 10:26     ` Andreas Gruenbacher
2015-09-06  8:14     ` [PATCH] " Andreas Gruenbacher
     [not found]       ` <1441527246-18189-1-git-send-email-agruenba-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-09-11 20:30         ` J. Bruce Fields
2015-09-11 20:30           ` J. Bruce Fields
2015-09-05 10:27   ` [RFC v7 08/41] richacl: Compute maximum file masks from an acl Andreas Gruenbacher
2015-09-05 10:27     ` Andreas Gruenbacher
2015-09-05 10:27   ` [RFC v7 09/41] richacl: Update the file masks in chmod() Andreas Gruenbacher
2015-09-05 10:27     ` Andreas Gruenbacher
     [not found]     ` <1441448856-13478-10-git-send-email-agruenba-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-09-11 20:35       ` J. Bruce Fields
2015-09-11 20:35         ` J. Bruce Fields
2015-09-05 10:27   ` [RFC v7 10/41] richacl: Permission check algorithm Andreas Gruenbacher
2015-09-05 10:27     ` Andreas Gruenbacher
     [not found]     ` <1441448856-13478-11-git-send-email-agruenba-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-09-11 21:16       ` J. Bruce Fields
2015-09-11 21:16         ` J. Bruce Fields
     [not found]         ` <20150911211617.GF11677-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
2015-09-11 22:12           ` Andreas Grünbacher
2015-09-11 22:12             ` Andreas Grünbacher
2015-09-17 17:30             ` J. Bruce Fields
2015-09-05 10:27   ` [RFC v7 11/41] vfs: Cache base_acl objects in inodes Andreas Gruenbacher
2015-09-05 10:27     ` Andreas Gruenbacher
2015-09-05 10:27   ` [RFC v7 13/41] richacl: Check if an acl is equivalent to a file mode Andreas Gruenbacher
2015-09-05 10:27     ` Andreas Gruenbacher
2015-09-17 18:22     ` J. Bruce Fields
     [not found]       ` <20150917182219.GB13825-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
2015-09-18  0:56         ` J. Bruce Fields
2015-09-18  0:56           ` J. Bruce Fields
     [not found]           ` <20150918005607.GB16699-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
2015-09-21 13:59             ` Austin S Hemmelgarn
2015-09-21 13:59               ` Austin S Hemmelgarn
     [not found]               ` <56000D2B.6000705-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-09-21 14:38                 ` J. Bruce Fields
2015-09-21 14:38                   ` J. Bruce Fields
     [not found]                   ` <20150921143817.GA11256-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
2015-09-21 17:00                     ` Austin S Hemmelgarn [this message]
2015-09-21 17:00                       ` Austin S Hemmelgarn
2015-09-21 17:48                       ` J. Bruce Fields
2015-09-21 15:31                 ` J. Bruce Fields
2015-09-21 15:31                   ` J. Bruce Fields
2015-09-21 23:26             ` Andreas Gruenbacher
2015-09-21 23:26               ` Andreas Gruenbacher
2015-09-21 23:20       ` Andreas Gruenbacher
2015-09-17 18:37     ` J. Bruce Fields
2015-09-05 10:27   ` [RFC v7 14/41] richacl: Create-time inheritance Andreas Gruenbacher
2015-09-05 10:27     ` Andreas Gruenbacher
     [not found]     ` <1441448856-13478-15-git-send-email-agruenba-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-09-18 17:58       ` J. Bruce Fields
2015-09-18 17:58         ` J. Bruce Fields
     [not found]         ` <20150918175840.GA21506-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
2015-09-21 20:37           ` Andreas Gruenbacher
2015-09-21 20:37             ` Andreas Gruenbacher
2015-09-05 10:27   ` [RFC v7 17/41] vfs: Add richacl permission checking Andreas Gruenbacher
2015-09-05 10:27     ` Andreas Gruenbacher
2015-09-05 10:27   ` [RFC v7 19/41] ext4: Add richacl feature flag Andreas Gruenbacher
2015-09-05 10:27     ` Andreas Gruenbacher
2015-09-23  2:31     ` Aneesh Kumar K.V
2015-09-05 10:27   ` [RFC v7 20/41] richacl: acl editing helper functions Andreas Gruenbacher
2015-09-05 10:27     ` Andreas Gruenbacher
     [not found]     ` <1441448856-13478-21-git-send-email-agruenba-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-09-18 18:54       ` J. Bruce Fields
2015-09-18 18:54         ` J. Bruce Fields
2015-09-05 10:27   ` [RFC v7 22/41] richacl: Propagate everyone@ permissions to other aces Andreas Gruenbacher
2015-09-05 10:27     ` Andreas Gruenbacher
     [not found]     ` <1441448856-13478-23-git-send-email-agruenba-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-09-18 21:36       ` J. Bruce Fields
2015-09-18 21:36         ` J. Bruce Fields
     [not found]         ` <20150918213611.GC22671-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
2015-09-21 23:44           ` Andreas Gruenbacher
2015-09-21 23:44             ` Andreas Gruenbacher
2015-09-18 21:56       ` J. Bruce Fields
2015-09-18 21:56         ` J. Bruce Fields
     [not found]         ` <20150918215611.GD22671-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
2015-09-21 19:24           ` J. Bruce Fields
2015-09-21 19:24             ` J. Bruce Fields
     [not found]             ` <20150921192441.GA12968-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
2015-09-23  1:24               ` Andreas Gruenbacher
2015-09-23  1:24                 ` Andreas Gruenbacher
     [not found]             ` <CAHc6FU5Ug3rN2-znFeABpdn+LCHgvzOnSRB4BCepNS6mToJVZg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-09-23  1:39               ` Andreas Gruenbacher
2015-09-23  1:39                 ` Andreas Gruenbacher
     [not found]                 ` <1442972384-22757-1-git-send-email-agruenba-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-09-23  1:46                   ` J. Bruce Fields
2015-09-23  1:46                     ` J. Bruce Fields
2015-09-05 10:27   ` [RFC v7 24/41] richacl: Set the other permissions to the other mask Andreas Gruenbacher
2015-09-05 10:27     ` Andreas Gruenbacher
2015-09-23 14:03     ` J. Bruce Fields
     [not found]       ` <20150923140307.GB27083-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
2015-09-23 14:12         ` Andreas Grünbacher
2015-09-23 14:12           ` Andreas Grünbacher
2015-09-05 10:27   ` [RFC v7 25/41] richacl: Isolate the owner and group classes Andreas Gruenbacher
2015-09-05 10:27     ` Andreas Gruenbacher
     [not found]     ` <1441448856-13478-26-git-send-email-agruenba-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-09-22 16:06       ` J. Bruce Fields
2015-09-22 16:06         ` J. Bruce Fields
     [not found]         ` <20150922160637.GC15838-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
2015-09-23 13:11           ` Andreas Gruenbacher
2015-09-23 13:11             ` Andreas Gruenbacher
     [not found]             ` <CAHc6FU6gnPK5vdJynv0ze=mNju6V_1WuR99oXWC4Fdh2GFMVgA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-09-23 13:15               ` J. Bruce Fields
2015-09-23 13:15                 ` J. Bruce Fields
2015-09-22 19:02     ` J. Bruce Fields
     [not found]       ` <20150922190224.GA19127-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
2015-09-23 13:33         ` Andreas Gruenbacher
2015-09-23 13:33           ` Andreas Gruenbacher
     [not found]           ` <CAHc6FU7_+fbyG0mEu3pUkfaV72AM0DzJnBES=b--koXJgo0a2g-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-09-25 11:25             ` Andreas Gruenbacher
2015-09-25 11:25               ` Andreas Gruenbacher
     [not found]               ` <1443180341-22911-1-git-send-email-agruenba-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-09-25 20:17                 ` J. Bruce Fields
2015-09-25 20:17                   ` J. Bruce Fields
2015-09-22 19:02     ` J. Bruce Fields
2015-09-05 10:27   ` [RFC v7 26/41] richacl: Apply the file masks to a richacl Andreas Gruenbacher
2015-09-05 10:27     ` Andreas Gruenbacher
2015-09-22 19:11     ` J. Bruce Fields
     [not found]       ` <20150922191108.GC19127-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
2015-09-23 19:18         ` J. Bruce Fields
2015-09-23 19:18           ` J. Bruce Fields
     [not found]           ` <20150923191832.GA29577-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
2015-09-23 20:29             ` Andreas Gruenbacher
2015-09-23 20:29               ` Andreas Gruenbacher
     [not found]               ` <CAHc6FU4YkLJUAQEfH7CG8sAzXYbGzg_ibyT7m26Fc1p26v1=VQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-09-23 20:33                 ` J. Bruce Fields
2015-09-23 20:33                   ` J. Bruce Fields
     [not found]                   ` <20150923203357.GC30521-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
2015-09-23 20:40                     ` Andreas Gruenbacher
2015-09-23 20:40                       ` Andreas Gruenbacher
2015-09-23 21:05                       ` J. Bruce Fields
     [not found]                         ` <20150923210531.GC29349-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
2015-09-23 22:14                           ` Andreas Gruenbacher
2015-09-23 22:14                             ` Andreas Gruenbacher
2015-09-24 15:28                             ` J. Bruce Fields
     [not found]                               ` <20150924152851.GC3823-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
2015-09-24 15:48                                 ` Andreas Gruenbacher
2015-09-24 15:48                                   ` Andreas Gruenbacher
     [not found]     ` <1441448856-13478-27-git-send-email-agruenba-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-09-22 20:50       ` J. Bruce Fields
2015-09-22 20:50         ` J. Bruce Fields
2015-09-24 18:33       ` J. Bruce Fields
2015-09-24 18:33         ` J. Bruce Fields
     [not found]         ` <20150924183310.GE3823-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
2015-09-25 16:21           ` [PATCH] richacl: Possible other write-through fix Andreas Gruenbacher
2015-09-25 16:21             ` Andreas Gruenbacher
2015-09-25 16:21             ` Andreas Gruenbacher
2015-09-25 16:45           ` Andreas Gruenbacher
2015-09-25 16:45             ` Andreas Gruenbacher
2015-09-25 16:45             ` Andreas Gruenbacher
     [not found]             ` <1443199559-4870-1-git-send-email-agruenba-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-09-25 18:36               ` J. Bruce Fields
2015-09-25 18:36                 ` J. Bruce Fields
2015-09-05 10:27   ` [RFC v7 27/41] richacl: Create richacl from mode values Andreas Gruenbacher
2015-09-05 10:27     ` Andreas Gruenbacher
     [not found]     ` <1441448856-13478-28-git-send-email-agruenba-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-09-23 20:11       ` J. Bruce Fields
2015-09-23 20:11         ` J. Bruce Fields
2015-09-05 10:27   ` [RFC v7 28/41] nfsd: Keep list of acls to dispose of in compoundargs Andreas Gruenbacher
2015-09-05 10:27     ` Andreas Gruenbacher
     [not found]     ` <1441448856-13478-29-git-send-email-agruenba-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-09-23 20:28       ` J. Bruce Fields
2015-09-23 20:28         ` J. Bruce Fields
2015-09-05 10:27   ` [RFC v7 29/41] nfsd: Use richacls as internal acl representation Andreas Gruenbacher
2015-09-05 10:27     ` Andreas Gruenbacher
     [not found]     ` <1441448856-13478-30-git-send-email-agruenba-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-09-24 19:29       ` J. Bruce Fields
2015-09-24 19:29         ` J. Bruce Fields
2015-09-05 10:27   ` [RFC v7 30/41] nfsd: Add richacl support Andreas Gruenbacher
2015-09-05 10:27     ` Andreas Gruenbacher
2015-09-24 19:38     ` J. Bruce Fields
2015-09-05 10:27   ` [RFC v7 31/41] nfsd: Add support for the v4.1 dacl attribute Andreas Gruenbacher
2015-09-05 10:27     ` Andreas Gruenbacher
     [not found]     ` <1441448856-13478-32-git-send-email-agruenba-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-09-24 19:59       ` J. Bruce Fields
2015-09-24 19:59         ` J. Bruce Fields
2015-09-25 16:37         ` Andreas Gruenbacher
2015-09-05 10:27   ` [RFC v7 32/41] nfsd: Add support for the MAY_CREATE_{FILE,DIR} permissions Andreas Gruenbacher
2015-09-05 10:27     ` Andreas Gruenbacher
     [not found]     ` <1441448856-13478-33-git-send-email-agruenba-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-09-24 20:01       ` J. Bruce Fields
2015-09-24 20:01         ` J. Bruce Fields
2015-09-05 10:27   ` [RFC v7 33/41] richacl: Add support for unmapped identifiers Andreas Gruenbacher
2015-09-05 10:27     ` Andreas Gruenbacher
2015-09-05 10:27   ` [RFC v7 35/41] sunrpc: Allow to demand-allocate pages to encode into Andreas Gruenbacher
2015-09-05 10:27     ` Andreas Gruenbacher
2015-09-05 10:27   ` [RFC v7 36/41] sunrpc: Add xdr_init_encode_pages Andreas Gruenbacher
2015-09-05 10:27     ` Andreas Gruenbacher
2015-09-05 10:27   ` [RFC v7 38/41] nfs: Remove unused xdr page offsets in getacl/setacl arguments Andreas Gruenbacher
2015-09-05 10:27     ` Andreas Gruenbacher
2015-09-05 10:27   ` [RFC v7 39/41] nfs: Add richacl support Andreas Gruenbacher
2015-09-05 10:27     ` Andreas Gruenbacher
2015-09-05 10:27   ` [RFC v7 40/41] nfs: Add support for the v4.1 dacl attribute Andreas Gruenbacher
2015-09-05 10:27     ` Andreas Gruenbacher
2015-09-05 10:27   ` [RFC v7 41/41] richacl: uapi header split Andreas Gruenbacher
2015-09-05 10:27     ` Andreas Gruenbacher
2015-09-05 10:27 ` [RFC v7 12/41] vfs: Cache richacl in struct inode Andreas Gruenbacher
2015-09-05 10:27 ` [RFC v7 15/41] richacl: Automatic Inheritance Andreas Gruenbacher
2015-09-18 18:40   ` J. Bruce Fields
2015-09-21 21:19     ` Andreas Gruenbacher
2015-09-22  1:51       ` J. Bruce Fields
     [not found]         ` <20150922015146.GA15960-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
2015-09-23 13:55           ` J. Bruce Fields
2015-09-23 13:55             ` J. Bruce Fields
2015-09-05 10:27 ` [RFC v7 16/41] richacl: xattr mapping functions Andreas Gruenbacher
2015-09-05 10:27 ` [RFC v7 18/41] ext4: Add richacl support Andreas Gruenbacher
     [not found]   ` <1441448856-13478-19-git-send-email-agruenba-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-09-23  2:30     ` Aneesh Kumar K.V
2015-09-23  2:30       ` Aneesh Kumar K.V
2015-09-05 10:27 ` [RFC v7 21/41] richacl: Move everyone@ aces down the acl Andreas Gruenbacher
2015-09-18 19:35   ` J. Bruce Fields
     [not found]     ` <20150918193524.GA22671-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
2015-09-21 21:43       ` Andreas Gruenbacher
2015-09-21 21:43         ` Andreas Gruenbacher
     [not found]         ` <CAHc6FU5m8KKSsEg18UhRSnVdsAzoFSD9pdLRv1DdDA==ZCQmdw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-09-22  1:52           ` J. Bruce Fields
2015-09-22  1:52             ` J. Bruce Fields
2015-09-05 10:27 ` [RFC v7 23/41] richacl: Set the owner permissions to the owner mask Andreas Gruenbacher
2015-09-21 21:00   ` J. Bruce Fields
2015-09-05 10:27 ` [RFC v7 34/41] ext4: Don't allow unmapped identifiers in richacls Andreas Gruenbacher
2015-09-05 10:27 ` [RFC v7 37/41] nfs: Fix GETATTR bitmap verification Andreas Gruenbacher

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