LXR linux-old/fs/xfs/xfs

   1/*
   2 * Copyright (c) 2000-2002 Silicon Graphics, Inc.  All Rights Reserved.
   3 *
   4 * This program is free software; you can redistribute it and/or modify it
   5 * under the terms of version 2 of the GNU General Public License as
   6 * published by the Free Software Foundation.
   7 *
   8 * This program is distributed in the hope that it would be useful, but
   9 * WITHOUT ANY WARRANTY; without even the implied warranty of
  10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  11 *
  12 * Further, this software is distributed without any warranty that it is
  13 * free of the rightful claim of any third person regarding infringement
  14 * or the like.  Any license provided herein, whether implied or
  15 * otherwise, applies only to this software file.  Patent licenses, if
  16 * any, provided herein do not apply to combinations of this program with
  17 * other software, or any other product whatsoever.
  18 *
  19 * You should have received a copy of the GNU General Public License along
  20 * with this program; if not, write the Free Software Foundation, Inc., 59
  21 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
  22 *
  23 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
  24 * Mountain View, CA  94043, or:
  25 *
  26 * http://www.sgi.com
  27 *
  28 * For further information regarding this notice, see:
  29 *
  30 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
  31 */
  32#ifndef __XFS_CAP_H__
  33#define __XFS_CAP_H__
  34
  35/*
  36 * Capabilities
  37 */
  38typedef __uint64_t xfs_cap_value_t;
  39
  40typedef struct xfs_cap_set {
  41        xfs_cap_value_t cap_effective;  /* use in capability checks */
  42        xfs_cap_value_t cap_permitted;  /* combined with file attrs */
  43        xfs_cap_value_t cap_inheritable;/* pass through exec */
  44} xfs_cap_set_t;
  45
  46/* On-disk XFS extended attribute names */
  47#define SGI_CAP_FILE    "SGI_CAP_FILE"
  48#define SGI_CAP_FILE_SIZE       (sizeof(SGI_CAP_FILE)-1)
  49#define SGI_CAP_LINUX   "SGI_CAP_LINUX"
  50#define SGI_CAP_LINUX_SIZE      (sizeof(SGI_CAP_LINUX)-1)
  51
  52/*
  53 * For Linux, we take the bitfields directly from capability.h
  54 * and no longer attempt to keep this attribute ondisk compatible
  55 * with IRIX.  Since this attribute is only set on exectuables,
  56 * it just doesn't make much sense to try.  We do use a different
  57 * named attribute though, to avoid confusion.
  58 */
  59
  60#ifdef __KERNEL__
  61
  62#ifdef CONFIG_FS_POSIX_CAP
  63
  64#include <linux/posix_cap_xattr.h>
  65
  66struct vnode;
  67
  68extern int xfs_cap_vhascap(struct vnode *);
  69extern int xfs_cap_vset(struct vnode *, void *, size_t);
  70extern int xfs_cap_vget(struct vnode *, void *, size_t);
  71extern int xfs_cap_vremove(struct vnode *vp);
  72
  73#define _CAP_EXISTS             xfs_cap_vhascap
  74
  75#else
  76#define xfs_cap_vset(v,p,sz)    (-EOPNOTSUPP)
  77#define xfs_cap_vget(v,p,sz)    (-EOPNOTSUPP)
  78#define xfs_cap_vremove(v)      (-EOPNOTSUPP)
  79#define _CAP_EXISTS             (NULL)
  80#endif
  81
  82#endif  /* __KERNEL__ */
  83
  84#endif  /* __XFS_CAP_H__ */
  85