2401dc2975
Also don't bother to set up a .get_acl method for symlinks as we do not support access control (ACLs or even mode bits) for symlinks in Linux, and create inodes with the proper mode instead of fixing it up later. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
76 lines
2.4 KiB
C
76 lines
2.4 KiB
C
/*
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* Copyright (c) 2001-2005 Silicon Graphics, Inc.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __XFS_ACL_H__
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#define __XFS_ACL_H__
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struct inode;
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struct posix_acl;
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struct xfs_inode;
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#define XFS_ACL_NOT_PRESENT (-1)
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/* On-disk XFS access control list structure */
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struct xfs_acl_entry {
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__be32 ae_tag;
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__be32 ae_id;
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__be16 ae_perm;
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__be16 ae_pad; /* fill the implicit hole in the structure */
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};
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struct xfs_acl {
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__be32 acl_cnt;
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struct xfs_acl_entry acl_entry[0];
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};
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/*
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* The number of ACL entries allowed is defined by the on-disk format.
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* For v4 superblocks, that is limited to 25 entries. For v5 superblocks, it is
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* limited only by the maximum size of the xattr that stores the information.
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*/
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#define XFS_ACL_MAX_ENTRIES(mp) \
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(xfs_sb_version_hascrc(&mp->m_sb) \
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? (XATTR_SIZE_MAX - sizeof(struct xfs_acl)) / \
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sizeof(struct xfs_acl_entry) \
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: 25)
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#define XFS_ACL_MAX_SIZE(mp) \
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(sizeof(struct xfs_acl) + \
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sizeof(struct xfs_acl_entry) * XFS_ACL_MAX_ENTRIES((mp)))
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/* On-disk XFS extended attribute names */
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#define SGI_ACL_FILE (unsigned char *)"SGI_ACL_FILE"
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#define SGI_ACL_DEFAULT (unsigned char *)"SGI_ACL_DEFAULT"
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#define SGI_ACL_FILE_SIZE (sizeof(SGI_ACL_FILE)-1)
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#define SGI_ACL_DEFAULT_SIZE (sizeof(SGI_ACL_DEFAULT)-1)
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#ifdef CONFIG_XFS_POSIX_ACL
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extern struct posix_acl *xfs_get_acl(struct inode *inode, int type);
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extern int xfs_set_acl(struct inode *inode, struct posix_acl *acl, int type);
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extern int posix_acl_access_exists(struct inode *inode);
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extern int posix_acl_default_exists(struct inode *inode);
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#else
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static inline struct posix_acl *xfs_get_acl(struct inode *inode, int type)
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{
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return NULL;
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}
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# define xfs_set_acl NULL
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# define posix_acl_access_exists(inode) 0
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# define posix_acl_default_exists(inode) 0
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#endif /* CONFIG_XFS_POSIX_ACL */
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#endif /* __XFS_ACL_H__ */
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