fs/xfs/xfs_cap.h

   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  */
  38 typedef __uint64_t xfs_cap_value_t;
  39
  40 typedef 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
  66 struct vnode;
  67
  68 extern int xfs_cap_vhascap(struct vnode *);
  69 extern int xfs_cap_vset(struct vnode *, void *, size_t);
  70 extern int xfs_cap_vget(struct vnode *, void *, size_t);
  71 extern 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__ */