From mboxrd@z Thu Jan 1 00:00:00 1970 From: bfields-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org (J. Bruce Fields) Subject: Re: [RFC v3 30/45] richacl: Create richacl from mode values Date: Thu, 28 May 2015 15:24:13 -0400 Message-ID: <20150528192413.GA31663@fieldses.org> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-nfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Andreas Gruenbacher To: Andreas Gruenbacher Return-path: Content-Disposition: inline In-Reply-To: Sender: linux-nfs-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-fsdevel.vger.kernel.org On Fri, Apr 24, 2015 at 01:04:27PM +0200, Andreas Gruenbacher wrote: > Create a richacl that corresponds to given file mode permission bits. > > Signed-off-by: Andreas Gruenbacher > --- > fs/richacl_compat.c | 38 ++++++++++++++++++++++++++++++++++++++ > include/linux/richacl.h | 1 + > 2 files changed, 39 insertions(+) > > diff --git a/fs/richacl_compat.c b/fs/richacl_compat.c > index 49af600..8ebe772 100644 > --- a/fs/richacl_compat.c > +++ b/fs/richacl_compat.c > @@ -750,3 +750,41 @@ richacl_apply_masks(struct richacl **acl) > return 0; > } > EXPORT_SYMBOL_GPL(richacl_apply_masks); > + > +/** > + * richacl_from_mode_unmasked - create an acl which corresponds to @mode > + * > + * The resulting acl doesn't have the RICHACL_MASKED flag set. That seems to disagree with: > + * > + * @mode: file mode including the file type > + */ > +struct richacl * > +richacl_from_mode_unmasked(mode_t mode) > +{ > + struct richacl *acl; > + struct richace *ace; > + > + acl = richacl_alloc(1, GFP_KERNEL); > + if (!acl) > + return NULL; > + acl->a_flags = RICHACL_MASKED; this line? --b. > + acl->a_owner_mask = richacl_mode_to_mask(mode >> 6) | > + RICHACE_POSIX_OWNER_ALLOWED; > + acl->a_group_mask = richacl_mode_to_mask(mode >> 3); > + acl->a_other_mask = richacl_mode_to_mask(mode); > + > + ace = acl->a_entries; > + ace->e_type = RICHACE_ACCESS_ALLOWED_ACE_TYPE; > + ace->e_flags = RICHACE_SPECIAL_WHO; > + ace->e_mask = RICHACE_POSIX_ALWAYS_ALLOWED | > + RICHACE_POSIX_MODE_ALL | > + RICHACE_POSIX_OWNER_ALLOWED; > + /* RICHACE_DELETE_CHILD is meaningless for non-directories. */ > + if (!S_ISDIR(mode)) > + ace->e_mask &= ~RICHACE_DELETE_CHILD; > + ace->e_id.special = RICHACE_EVERYONE_SPECIAL_ID; > + > + return acl; > + > +} > +EXPORT_SYMBOL_GPL(richacl_from_mode_unmasked); > diff --git a/include/linux/richacl.h b/include/linux/richacl.h > index 6a97dca..25ff4df 100644 > --- a/include/linux/richacl.h > +++ b/include/linux/richacl.h > @@ -327,5 +327,6 @@ extern struct richacl *richacl_create(struct inode *, struct inode *); > > /* richacl_compat.c */ > extern int richacl_apply_masks(struct richacl **); > +extern struct richacl *richacl_from_mode_unmasked(mode_t); > > #endif /* __RICHACL_H */ > -- > 2.1.0 > > -- > 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-nfs" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html